期刊文献+
共找到40篇文章
< 1 2 >
每页显示 20 50 100
Natural rubber latex as a potential additive for water-based drilling fluids
1
作者 Jun Yang Guan-Cheng Jiang +4 位作者 Jing-Tian Yi Yin-Bo He Li-Li Yang Teng-Fei Dong Guo-Shuai Wang 《Petroleum Science》 SCIE EI CAS CSCD 2024年第4期2677-2687,共11页
The environmental hazards and"carbon footprint"of oil and gas drilling can be significantly reduced by replacing traditional petroleum-based chemical additives with natural materials derived from plants and ... The environmental hazards and"carbon footprint"of oil and gas drilling can be significantly reduced by replacing traditional petroleum-based chemical additives with natural materials derived from plants and animals.This paper explored for the first time the interaction mechanism between natural rubber latex(NRL)and bentonite suspensions(BTs)through a series of characterization experiments,as well as the potential applications in water-based drilling fluids(WBDF).The gel viscoelasticity experiments showed that NRL could decrease the consistency coefficient(k)and flow index(n)of BTs,and enhance the shear thinning performance of BTs as pseudo-plastic fluids.In addition,0.5 w/v%NRL not only increased the critical yield stress and strengthened the structural strength between the bentonite particles,but also facilitated the compatibility of pressure loss and flow efficiency.The evaluation of colloidal stability and WBDF performance indicated that NRL particles could promote the hydration and charge stability on the surface of BTs particles,and optimize the particle size distribution and flow resistance of WBDF under the"intercalation-exfoliation-encapsulation"synergistic interaction.Moreover,NRL can improve the rheological properties of WBDF at high temperatures(<150.C),and form a dense blocking layer by bridging and sealing the pores and cracks of the filter cake,which ultimately reduces the permeability of the cake and the filtration loss of WBDF. 展开更多
关键词 Natural materials water-based drilling fluids Natural rubber latex Bentonite suspensions Filtration loss
下载PDF
Improving the anti-collapse performance of water-based drilling fluids of Xinjiang Oilfield using hydrophobically modified silica nanoparticles with cationic surfactants 被引量:2
2
作者 He Li Xian-Bin Huang +3 位作者 Jin-Sheng Sun Kai-He Lv Xu Meng Zhen Zhang 《Petroleum Science》 SCIE EI CAS CSCD 2023年第3期1768-1778,共11页
Wellbore instability,especially drilling with water-based drilling fluids(WBDFs)in complex shale for-mations,is a critical challenge for oil and gas development.The purpose of this paper is to study the feasibility of... Wellbore instability,especially drilling with water-based drilling fluids(WBDFs)in complex shale for-mations,is a critical challenge for oil and gas development.The purpose of this paper is to study the feasibility of using hydrophobically modified silica nanoparticle(HMN)to enhance the comprehensive performance of WBDFs in the Xinjiang Oilfield,especially the anti-collapse performance.The effect of HMN on the overall performance of WBDFs in the Xinjiang Oilfield,including inhibition,plugging,lu-bricity,rheology,and filtration loss,was studied with a series of experiments.The mechanism of HMN action was studied by analyzing the changes of shale surface structure and chemical groups,wettability,and capillary force.The experimental results showed that HMN could improve the performance of WBDFs in the Xinjiang Oilfeld to inhibit the hydration swelling and dispersion of shale.The plugging and lubrication performance of the WBDFs in the Xinjiang Oilfield were also enhanced with HMN based on the experimental results.HMN had less impact on the rheological and filtration performance of the WBDFs in the Xinjiang Oilfield.In addition,HMN significantly prevented the decrease of shale strength.The potential mechanism of HMN was as follows.The chemical composition and structure of the shale surface were altered due to the adsorption of HMN driven by electrostatic attraction.Changes of the shale surface resulted in significant wettability transition.The capillary force of the shale was converted from a driving force of water into the interior to a resistance.In summary,hydrophobic nanoparticles presented afavorable application potential for WBDFs. 展开更多
关键词 Hydrophobic nanoparticle Wetting alteration Wellbore stability water-based drilling fluids SHALE
下载PDF
Hydrophobic Small-Molecule Polymers as High-Temperature-Resistant Inhibitors in Water-Based Drilling Fluids
3
作者 Xuyang Yao Kecheng Liu +5 位作者 Zenan Zhou Jun Zhou Xianbin Huang Tiemei Lu Yongsheng Yu He Li 《Fluid Dynamics & Materials Processing》 EI 2023年第7期1775-1787,共13页
Water-based drilling fluids can cause hydration of the wellbore rocks,thereby leading to instability.This study aimed to synthesize a hydrophobic small-molecule polymer(HLMP)as an inhibitor to suppress mud shale hydra... Water-based drilling fluids can cause hydration of the wellbore rocks,thereby leading to instability.This study aimed to synthesize a hydrophobic small-molecule polymer(HLMP)as an inhibitor to suppress mud shale hydration.An infrared spectral method and a thermogravimetric technique were used to characterize the chemical composition of the HLMP and evaluate its heat stability.Experiments were conducted to measure the linear swelling,rolling recovery rate,and bentonite inhibition rate and evaluate accordingly the inhibition performance of the HLMP.Moreover,the HLMP was characterized through measurements of the zeta potential,particle size distribution,contact angles,and interlayer space testing.As confirmed by the results,the HLMP could successfully be synthesized with a favorable heat stability.Furthermore,favorable results were found for the inhibitory processes of the HLMP on swelling and dispersed hydration during mud shale hydration.The positively charged HLMP could be electrically neutralized with clay particles,thereby inhibiting diffusion in the double electron clay layers.The hydrophobic group in the HLMP molecular structure resulted in the formation of a hydrophobic membrane on the rock surface,enhancing the hydrophobicity of the rock.In addition,the small molecules of the HLMP could plug the spaces between the layers of bentonite crystals,thereby reducing the entry of water molecules and inhibiting shale hydration. 展开更多
关键词 water-based drilling fluids hydrophobic polymers shale inhibitor temperature resistance
下载PDF
High temperature and high pressure rheological properties of high-density water-based drilling fluids for deep wells 被引量:10
4
作者 Wang Fuhua Tan Xuechao +3 位作者 Wang Ruihe Sun Mingbo Wang Li Liu Jianghua 《Petroleum Science》 SCIE CAS CSCD 2012年第3期354-362,共9页
To maintain tight control over rheological properties of high-density water-based drilling fluids, it is essential to understand the factors influencing the theology of water-based drilling fluids. This paper examines... To maintain tight control over rheological properties of high-density water-based drilling fluids, it is essential to understand the factors influencing the theology of water-based drilling fluids. This paper examines temperature effects on the rheological properties of two types of high-density water-based drilling fluids (fresh water-based and brine-based) under high temperature and high pressure (HTHP) with a Fann 50SL rheometer. On the basis of the water-based drilling fluid systems formulated in laboratory, this paper mainly describes the influences of different types and concentration of clay, the content of a colloid stabilizer named GHJ-1 and fluid density on the rheological parameters such as viscosity and shear stress. In addition, the effects of aging temperature and aging time of the drilling fluid on these parameters were also examined. Clay content and proportions for different densities of brine-based fluids were recommended to effectively regulate the rheological properties. Four theological models, the Bingham, power law, Casson and H-B models, were employed to fit the rheological parameters. It turns out that the H-B model was the best one to describe the rheological properties of the high-density drilling fluid under HTHP conditions and power law model produced the worst fit. In addition, a new mathematical model that describes the apparent viscosity as a function of temperature and pressure was established and has been applied on site. 展开更多
关键词 High-density water-based drilling fluid rheological behavior CLAY high temperature high pressure linear fitting rheological model mathematical model
下载PDF
Carbon nanotube enhanced water-based drilling fluid for high temperature and high salinity deep resource development 被引量:5
5
作者 Jing-Ping Liu Xian-Fa Zhang +6 位作者 Wen-Chao Zhang Kai-He Lv Yin-Rui Bai Jin-Tang Wang Xian-Bin Huang Jia-Feng Jin Jin-Sheng Sun 《Petroleum Science》 SCIE CAS CSCD 2022年第2期916-926,共11页
Drilling fluids face failure during drilling deep reservoir with high temperature and high salt.The experimental results show that high temperature and salinity reduce the negative charge on the surface of bentonite i... Drilling fluids face failure during drilling deep reservoir with high temperature and high salt.The experimental results show that high temperature and salinity reduce the negative charge on the surface of bentonite in the drilling fluid and cause the coalescence of bentonite particles.As a result,the particles coalesce,the grid structure is destroyed,and the rheological properties,rock-carrying capacity and filtration properties are lost.To resolve the foregoing,in this study,0.05-wt%carbon nanotubes are introduced into a 4%bentonite drilling fluid under conditions where the temperature and concentration of added Na Cl reach 180°C and 10 wt%,respectively.The carbon nanotubes adsorb on the bentonite surface and increase the space among bentonite particles.The steric hindrance prevents the coalescence of bentonite in high temperature and high salt environment.Thus bentonite maintains the small size distribution of bentonite and supports the bentonite grid structure in the drilling fluid.As a result,the rock-carrying capacity of the drilling fluid increases by 85.1%.Moreover,the mud cake formed by the accumulation of small-sized bentonite particles is dense;consequently,the filtration of bentonite drilling fluid reduced by 30.2%. 展开更多
关键词 High temperature water-based drilling fluid High salinity Carbon nanotube Deep resources
下载PDF
Notoginsenoside as an environmentally friendly shale inhibitor in water-based drilling fluid 被引量:2
6
作者 Jin-Sheng Sun Zong-Lun Wang +6 位作者 Jing-Ping Liu Kai-He Lv Fan Zhang Zi-Hua Shao Xiao-Dong Dong Zhi-Wen Dai Xian-Fa Zhang 《Petroleum Science》 SCIE CAS CSCD 2022年第2期608-618,共11页
The demand for non-toxic and biodegradable shale inhibitors is growing in the drilling industry.In this paper,the effect of notoginsenoside(NS)as a new,environmentally friendly inhibitor of shale hydration is systemat... The demand for non-toxic and biodegradable shale inhibitors is growing in the drilling industry.In this paper,the effect of notoginsenoside(NS)as a new,environmentally friendly inhibitor of shale hydration is systematically studied for the first time.The inhibition performance of NS was evaluated via inhibition evaluation tests,including mud ball immersion tests,linear expansion tests,shale rolling recovery tests,and compressive strength tests.The inhibition mechanism of NS was analyzed using Fourier transform infrared spectroscopy(FTIR),contact angle measurements,particle size distribution determination,thermogravimetric analysis(TGA),and scanning electron microscopy(SEM).The experimental results demonstrate that NS is able to adhere to the clay surface,forming a hydrophobic film that prevents the entry of water molecules and inhibiting the hydration dispersion of the clay.Because of this,NS can maintain the original state of bentonite pellets in water,which can effectively reduce the swelling rate of bentonite,increase the recovery rate of shale drill cuttings,maintain the strength of the shale,and therefore maintain the stability of the borehole wall during drilling.In addition,NS is non-toxic,degradable,and compatible with water-based drilling fluids.The above advantages make NS a promising candidate for use as an environmentally friendly shale inhibitor. 展开更多
关键词 Notoginsenoside Shale inhibition Environmentally friendly water-based drilling fluid Inhibition mechanism
下载PDF
A new environmentally friendly water-based drilling fluids with laponite nanoparticles and polysaccharide/polypeptide derivatives 被引量:2
7
作者 Xin-Liang Li Guan-Cheng Jiang +2 位作者 Yi Xu Zheng-Qiang Deng Kai Wang 《Petroleum Science》 SCIE CAS CSCD 2022年第6期2959-2968,共10页
Considering the increasing environmental pressure,environmentally friendly and high-performance water-based drilling fluids(WBDFs)have been widely studied in recent years to replace the commonly used oil-based drillin... Considering the increasing environmental pressure,environmentally friendly and high-performance water-based drilling fluids(WBDFs)have been widely studied in recent years to replace the commonly used oil-based drilling fluids(OBDFs).However,few of these drilling fluids are entirely composed of natural materials,which makes it difficult to achieve real environmental protection.Using laponite nanoparticles and various derivatives of natu ral mate rials,including cro sslinked starch,cellulose composite,gelatin ammonium salt,poly-l-arginine,and polyanionic cellulose,a kind of environmentally friendly water-based drilling fluid(EF-WBDF)was built for drilling in environment-sensitive areas.The properties of this EF-WBDF were evaluated by thermal stability tests on rheology,filtration,inhibition,and salt contamination.Besides,biological toxicity,biodegradability,heavy mental content and wheat cultivation tests were conducted to investigate the environmental factor of EF-WBDF.Results showed that EF-WBDF displayed satisfactory thermal resistance up to 150℃,and the rheological properties did not suffer significant fluctuation,showing potential application in high-temperature wells.The optimal rheological model of EF-WBDF was Herschel-Bulkley model.This EF-WBDF performed an eligible filtration of 14.2 mL at 150℃and a differential pressure of 3.5 MPa.This fluid could still maintain colloidal stability after being contaminated by 7.5%NaCl or 0.5%CaC1_(2).Meanwhile,rather low clay swelling degree of 2.44 mm and high shale recovery of more than 95%ensured the inhibitive capability of EF-WBDF.Furthermore,EF-WBDF presented a half maximal effective concentration(EC_(50))of51200 mg/L and a BOD/COD ratio of 47.55%,suggesting that EF-WBDF was non-toxic and easily biodegradable.The wheat cultivated in EF-WBDF could grow healthily,beneficial for reducing the adverse impact on ecological environment.The formed EF-WBDF has a promising future for drilling in environment-sensitive and high-temperature areas. 展开更多
关键词 water-based drilling fluids Environmental protection High-temperature resistance Laponite nanoparticles Natural materials Wellbore stability
下载PDF
Investigation of regulating rheological properties of water-based drilling fluids by ultrasound 被引量:1
8
作者 Wei-An Huang Jing-Wen Wang +4 位作者 Ming Lei Gong-Rang Li Zhi-Feng Duan Zhi-Jun Li Shi-Fu Yu 《Petroleum Science》 SCIE CAS CSCD 2021年第6期1698-1708,共11页
Regulating rheological properties of water-based drilling fluids has always been a hot topic.This paper proposed a new method for regulating rheological properties of water-based drilling fluids by ultrasonic field.Th... Regulating rheological properties of water-based drilling fluids has always been a hot topic.This paper proposed a new method for regulating rheological properties of water-based drilling fluids by ultrasonic field.The experimental results showed that the ultrasound increased the viscosity and yield point of bentonite suspension by reducing the particle size of clay,destroying the network structure between clay particles,increasing the mud yield and the cation exchange capacity of bentonite,and promoting the hydration dispersion of bentonite.The change of rheological property showed a memory effect at room temperature and high temperature.Besides,the ultrasonic energy affected the network structure between clays and polymer chains,thus regulating the rheological properties of the bentonite-polymer system.For two types of drilling fluids investigated,the rheology of the poly-sulfonate drilling fluid was regulated by damaging the grid structure between additives and clays by low-power ultrasound and reducing the clay particle size by high-power ultrasound,while the rheology of the deep-water drilling fluid was mainly regulated by disentangling the spatial grid structure between additives.Additionally,ultrasound showed no effect on the lubricity,inhibition and stability of drilling fluids,which proved the feasibility of ultrasound to regulate rheological properties of water-based drilling fluids. 展开更多
关键词 ULTRASOUND SUSPENSION water-based drilling fluid Rheological property
下载PDF
Application of sustainable basil seed as an eco-friendly multifunctional additive for water-based drilling fluids 被引量:1
9
作者 Xin Gao Han-Yi Zhong +3 位作者 Xian-Bin Zhang An-Liang Chen Zheng-Song Qiu Wei-An Huang 《Petroleum Science》 SCIE CAS CSCD 2021年第4期1163-1181,共19页
Basil seed,containing anionic heteropolysaccharides in its outer pericarp,swells as gelatinous hydrocolloid when soaked in water.In this study,basil seed powder(BSP)was used as a multifunctional additive for water-bas... Basil seed,containing anionic heteropolysaccharides in its outer pericarp,swells as gelatinous hydrocolloid when soaked in water.In this study,basil seed powder(BSP)was used as a multifunctional additive for water-based drilling fluids.The chemical composition,water absorbency,rheological properties of aqueous suspension of BSP were tested.The effect of BSP on the rheological and filtration of bentonitebased drilling fluid before and after thermal aging was investigated.The inhibition characteristics were evaluated by linear swelling,shale cuttings dispersion and shale immersion test.Lubricity improvement by BSP was measured with extreme pressure lubricity test.The results revealed that incorporation of BSP into bentonite suspension improved rheological and filtration properties effectively after thermal aging of 120℃.BSP exhibited superior inhibitive capacity to xanthan and synergistic effect with KCl.BSP could reduce friction by forming hydration layer.The nanoscale three-dimensional network structures enable BSP to maintain high water retention and absorb strongly on bentonite and metal surface,contributing to enhanced rheology,filtration,inhibition and lubrication properties.The versatile characteristic of BSP,as well as biodegradation makes it a promising additive using in high performance water-based drilling fluid and a potential alternative to conventional synthetic polymers. 展开更多
关键词 Basil seed Water absorbency MULTIFUNCTION water-based drilling fluid Three-dimensional network
下载PDF
Super-amphiphobic, strong self-cleaning and high-efficiency water-based drilling fluids 被引量:2
10
作者 JIANG Guancheng NI Xiaoxiao +2 位作者 LI Wuquan QUAN Xiaohu LUO Xuwu 《Petroleum Exploration and Development》 2020年第2期421-429,共9页
Based on the amphiphobic theory on underground rock surface, a super-amphiphobic agent is developed and evaluated which can form nano-micro papilla structure on rock, filter cake and metal surface, reduce surface free... Based on the amphiphobic theory on underground rock surface, a super-amphiphobic agent is developed and evaluated which can form nano-micro papilla structure on rock, filter cake and metal surface, reduce surface free energy, prevent collapse, protect reservoir, lubricate and increase drilling speed. With this super-amphiphobic agent as the core agent, a super-amphiphobic, strong self-cleaning and high-performance water-based drilling fluid system has been developed by combining with other agents based on drilled formation, and compared with high-performance water-based drilling fluid and typical oil based drilling fluid commonly used in oilfields. The results show that the super-amphiphobic, strong self-cleaning and high-performance water-based drilling fluid has better rheology, and high temperature and high pressure filtration similar with that of oil-based drilling fluid, inhibiting and lubricating properties close to oil based drilling fluid. Besides, the super-amphiphobic system is non-toxic, safe and environmentally friendly. Field tests show this newly developed drilling fluid system can prevent wellbore collapse, reservoir damage and pipe-sticking, increase drilling speed and lower drilling cost, meeting the requirement of safe, high efficient, economic and environmentally friendly drilling. Compared with other drilling fluids, this new drilling fluid system can reduce downhole complexities by 82.9%, enhance the drilling speed by about 18.5%, lower drilling fluid cost by 39.3%, and increase the daily oil output by more than 1.5 times in the same block. 展开更多
关键词 POLYMER super-amphiphobic agent water-based drilling fluid reservoir protection wellbore stability
下载PDF
Preparation and Performance of the Hyperbranched Polyamine as an Effective Shale Inhibitor for Water-Based Drilling Fluid
11
作者 Yuan Liu Xiao Luo +3 位作者 Jianbo Wang Zhiqi Zhou Yue Luo Yang Bai 《Open Journal of Yangtze Oil and Gas》 2021年第4期161-174,共14页
Seeking effective solutions to control and mitigate the interaction between drilling fluids and clay formations has been a challenge for many years, and various shale inhibitors have shown excellent results in problem... Seeking effective solutions to control and mitigate the interaction between drilling fluids and clay formations has been a challenge for many years, and various shale inhibitors have shown excellent results in problematic shale formations around the world. Herein, the hyperbranched polyamine (HBPA) inhibitor with a higher ratio of amine groups and obvious tendentiousness in protonation was successfully synthesized from ethylenediamine, acryloyl chloride and aziridine by five steps, in which the metal-organic framework (MOF) was employed as a catalyst for ring-open polycondensation (ROP). The structure and purity were confirmed by nuclear magnetic resonance hydrogen spectroscopy and high-performance liquid chromatography (HPLC) respectively. The HBPA displays more excellent performance than EDA and KCl widely applied in the oil field. After aging at 80°C and 180°C, the YP of a slurry system containing 25 wt.% bentonite and 2 wt.% HBPA are just 8.5 Pa and 5.5 Pa (wt.%: percentage of mass), respectively. The swelling lengths of 2 wt.% HBPA are estimated to be 1.78 mm, which falls by 70% compared with that of freshwater. Under a hot rolling aging temperature of 180°C, the HBPA system demonstrates a significant inhibition with more than 85% shale cuttings recovery rate and is superior to conventional EDA and KCl. Mechanism analysis further validates that the HBPA can help to increase the zeta potential. 展开更多
关键词 water-based drilling fluid INHIBITORS Hyperbranched Polyamine Metal Organic Framework Catalyst Amine Groups
下载PDF
A high-temperature resistant and high-density polymeric saturated brine-based drilling fluid 被引量:1
12
作者 HUANG Xianbin SUN Jinsheng +3 位作者 LYU Kaihe DONG Xiaodong LIU Fengbao GAO Chongyang 《Petroleum Exploration and Development》 SCIE 2023年第5期1215-1224,共10页
Three high-temperature resistant polymeric additives for water-based drilling fluids are designed and developed:weakly cross-linked zwitterionic polymer fluid loss reducer(WCZ),flexible polymer microsphere nano-pluggi... Three high-temperature resistant polymeric additives for water-based drilling fluids are designed and developed:weakly cross-linked zwitterionic polymer fluid loss reducer(WCZ),flexible polymer microsphere nano-plugging agent(FPM)and comb-structure polymeric lubricant(CSP).A high-temperature resistant and high-density polymeric saturated brine-based drilling fluid was developed for deep drilling.The WCZ has a good anti-polyelectrolyte effect and exhibits the API fluid loss less than 8 mL after aging in saturated salt environment at 200°C.The FPM can reduce the fluid loss by improving the quality of the mud cake and has a good plugging effect on nano-scale pores/fractures.The CSP,with a weight average molecular weight of 4804,has multiple polar adsorption sites and exhibits excellent lubricating performance under high temperature and high salt conditions.The developed drilling fluid system with a density of 2.0 g/cm^(3)has good rheological properties.It shows a fluid loss less than 15 mL at 200°C and high pressure,a sedimentation factor(SF)smaller than 0.52 after standing at high temperature for 5 d,and a rolling recovery of hydratable drill cuttings similar to oil-based drilling fluid.Besides,it has good plugging and lubricating performance. 展开更多
关键词 deep drilling saturated brine-based drilling fluid high-temperature resistant additive water-based drilling fluid rheological property plugging performance lubricating performance
下载PDF
Mechanism of shales stabilization by hydrophobized poly(ethylene glycol)/K^(+) in water-base drilling fluids 被引量:1
13
作者 VILLABONA-ESTUPIÑAN Santiago de ALMEIDA RODRIGUES JUNIOR Jorge +1 位作者 de ABREU Carolina Ferreira NASCIMENTO Regina Sandra Veiga 《Petroleum Exploration and Development》 CSCD 2021年第3期721-731,共11页
The mechanism of the hydrophobized poly(ethylene glycol)(PEG)/K^(+) system inhibiting shale hydration was studied by laboratory experiment. The inhibition performance was evaluated through cuttings hot-rolling dispers... The mechanism of the hydrophobized poly(ethylene glycol)(PEG)/K^(+) system inhibiting shale hydration was studied by laboratory experiment. The inhibition performance was evaluated through cuttings hot-rolling dispersion, bentonite inhibition and contact angle tests. The inhibition became stronger as contact angle and PEG concentration increased. A modified cuttings hot-rolling dispersion experiment suggested that these molecular systems did not act through the thermally activated mud emulsion(TAME) mechanism. The interaction of the PEG/K^(+) with clay samples was investigated through adsorption studies and by Fourier transform infrared spectroscopy(FT-IR), X-ray diffraction(XRD) and thermogravimetric analysis(TGA). The adsorption isotherms showed that the presence of K^(+) increased the PEG affinity for the clay surface. This inhibition effect was accompanied by a reduction of the bentonite hydration with PEG adsorption, evidenced by FT-IR, TGA and differential thermogravimetric(DTG) curves. XRD patterns were conclusive in showing that the presence of K^(+) ions limited the expansion of the clay interlamellar region to only one PEG layer, and the terminal hydrophobic segments of the PEG chains turned out to be determinant in enhancement of the inhibitory efficiency. The cuttings hot-rolling dispersion was carried out on water-base drilling fluid with PEG/K^(+), which proved the inhibition performance of PEG/K^(+) in oil field drilling. 展开更多
关键词 shale hydration water-base drilling fluid hydration inhibitor poly(ethylene glycol) shale stability
下载PDF
Performance evaluation of laponite as a mud-making material for drilling fluids 被引量:3
14
作者 Zheng-Qiang Xiong Xiao-Dong Li +1 位作者 Fan Fu Yan-Ning Li 《Petroleum Science》 SCIE CAS CSCD 2019年第4期890-900,共11页
In this study, laponite was tested as a mud-making material for drilling fluids. Laponite is a synthetic smectite clay with a structure and composition closely resembling the natural clay mineral hectorite. Commercial... In this study, laponite was tested as a mud-making material for drilling fluids. Laponite is a synthetic smectite clay with a structure and composition closely resembling the natural clay mineral hectorite. Commercially available laponite was characterized by X-ray di ractometry, scanning electron microscopy and infrared spectrometry. Its dispersibility, salt resistance and high-temperature resistance were evaluated. The results showed that laponite possessed superior cation exchange capacity(140.4 mmol/100 g) with interlayer cations of Na^+ and Li^+. Laponite could easily be dispersed in water to yield increased viscosity with no influence from hydration time or temperature. On the other hand, laponite dispersions displayed an excellent heat resistance, with invariant apparent viscosity at high temperatures. For instance, the apparent viscosity of the2 wt% laponite dispersion underwent changes between 22 and 24 mPa s after hot rolling at 180–240 °C for 16 h. Compared to existing mud-making materials, laponite exhibited better mud-making properties. Furthermore, laponite revealed good compatibility with other additives, and the water-based drilling fluids prepared with laponite as mud-making material showed an excellent stability at elevated temperatures and superior performance–cost ratios. Overall, these findings indicated that laponite had an excellent dispersibility at high temperatures and hence would have promising applications as high-temperature mud-making material for preparing water-based drilling fluids designed for ultra-high-temperature environments. 展开更多
关键词 LAPONITE Mud-making material DISPERSIBILITY High-temperature tolerance Ultra-high-temperature water-based drilling fluids
下载PDF
Influence of monoethanolamine on thermal stability of starch in water based drilling fluid system
15
作者 NASIRI Alireza AMERI SHAHRABI Mohammad Javad +2 位作者 SHARIF NIK Mohammad Amin HEIDARI Hamidreza VALIZADEH Majid 《Petroleum Exploration and Development》 2018年第1期167-171,共5页
To improve the thermal stability of starch in water-based drilling fluid,monoethanolamine(MEA)was added,and the effect was investigated by laboratory experiment.The experimental results show that the addition of monoe... To improve the thermal stability of starch in water-based drilling fluid,monoethanolamine(MEA)was added,and the effect was investigated by laboratory experiment.The experimental results show that the addition of monoethanolamine(MEA)increases the apparent viscosity,plastic viscosity,dynamic shear force,and static shear force of the drilling fluid,and reduces the filtration rate of drilling fluid and thickness of mud cake apparently.By creating hydrogen bonds with starch polymer,the monoethanolamine can prevent hydrolysis of starch at high temperature.Starch,as a natural polymer,is able to improve the rheological properties and reduce filtration of drilling fluid,but it works only below 121℃.The MEA will increase the thermal stability of starch up to 160℃.There is a optimum concentration of MEA,when higher than this concentration,its effect declines. 展开更多
关键词 MONOETHANOLAMINE STARCH drilling fluid additives water-based drilling fluid thermal stability
下载PDF
Study on a Polyamine-Based Anti-Collapse Drilling Fluid System
16
作者 Wenwu Zheng Fu Liu +5 位作者 Jing Han Binbin He Shunyuan Zhang Qichao Cao Xiong Wang Xintong Li 《Open Journal of Yangtze Oil and Gas》 CAS 2022年第3期203-212,共10页
In complex strata, oil-based drilling fluid is the preferred drilling fluid system, but its preparation cost is high, and there are hidden safety risks. Therefore, the new progress of high-performance anti-collapse wa... In complex strata, oil-based drilling fluid is the preferred drilling fluid system, but its preparation cost is high, and there are hidden safety risks. Therefore, the new progress of high-performance anti-collapse water-based drilling fluid at home and abroad is analyzed. It is difficult to prevent and control the well collapse. Once the well wall instability problem occurs, it will often bring huge economic losses to the enterprises, and the underground safety accidents will occur. In order to ensure the stability of the well wall and improve the downhole safety, the key treatment agent of water-based collapse drilling fluid is selected, the anti-collapse drilling fluid system is formulated, the evaluation method of drilling fluid prevention performance is established, and a set of water-based drilling fluid system suitable for easy to collapse strata in China is selected to ensure the downhole safety. The development trend of high performance anti-collapse water-based drilling fluid is expected to provide a reference for the research of high performance anti-collapse water-based drilling fluid system and key treatment agent. 展开更多
关键词 Well Wall Stability Anti-Collapse water-based drilling fluid Evaluation Method High Temperature Resistance Salt Resistance
下载PDF
The influence of water-based drilling fluid on mechanical property of shale and the wellbore stability 被引量:6
17
作者 Shu He Lixi Liang +3 位作者 Yinjin Zeng Yi Ding Yongxue Lin Xiangjun Liu 《Petroleum》 2016年第1期61-66,共6页
Because of high cost and pollution of oil-based drilling fluid,the water-based drilling fluid is increasingly used now.However,bedding planes and micro-cracks are rich in shale formation.When water-based drilling flui... Because of high cost and pollution of oil-based drilling fluid,the water-based drilling fluid is increasingly used now.However,bedding planes and micro-cracks are rich in shale formation.When water-based drilling fluid contacts formation rock,it causes the propagation of crack and invasion of drilling fluid,which decrease shale strength and cause wellbore instability.In this paper,we analyzed influence of water-based drilling fluid on shale strength and failure mode by mechanics experiment.Based on those experimental results,considering the effect of bedding plane and drilling time,we established modeling of wellbore stability for shale formation.The result from this model indicates that in certain azimuth of horizontal well,collapsing pressure increases dramatically due to shale failure along with bedding plane.In drilling operation,those azimuths are supposed to be avoided.This model is applicable for predication of collapsing pressure in shale formation and offers reference for choosing suitable mud weight. 展开更多
关键词 water-based drilling fluid SHALE Bedding plane Wellbore stability
原文传递
Minimizing the filtration loss of water-based drilling fluid with sustainable basil seed powder
18
作者 Hanyi Zhong Xin Gao +4 位作者 Xianbin Zhang Anliang Chen Zhengsong Qiu Xiangzheng Kong Weian Huang 《Petroleum》 EI CSCD 2022年第1期39-52,共14页
Filtration control is important to ensure safe and high efficient drilling.The aim of the current research is to explore the feasibility of using basil seed powders(BSPs)to reduce filtration loss in water-based drilli... Filtration control is important to ensure safe and high efficient drilling.The aim of the current research is to explore the feasibility of using basil seed powders(BSPs)to reduce filtration loss in water-based drilling fluid.The effect of BSP concentration,thermal aging temperature,inorganic salts(NaCl and CaCl_(2))on the filtration properties of bentonite/basil suspensions was investigated.The filtration control mechanism of BSP was probed via water absorbency test,zeta potential measurement,particle size distribution measurement,and filter cake morphologies observation by scanning electron microscope.The incorporation of BSPs into the bentonite suspension generated acceptable rheology below 1.0 w/v%.The BSPs exhibited effective filtration control after thermal aging at 120C,but less efficiency at 150C.After thermal aging at 120℃,the bentonite suspension containing 1.0 w/v%BSPs could resist NaCl and CaCl_(2) pollution of 5.0 w/v%and 0.3 w/v%respectively.Besides general filtration control behaviors,the exceptional water retaining capability formed by numerous nanoscale 3D networks in the basil seed gum and considerable insoluble small particles in BSPs might further contribute to the filtration control.The excellent filtration properties bring basil seed a suitable and green candidate for the establishment of high-performance drilling fluids. 展开更多
关键词 Bentonite suspension Basil seed FILTRATION Interaction water-based drilling fluid
原文传递
A natural dye in water-based drilling fluids: Swelling inhibitive characteristic and side effects
19
作者 Aghil Moslemizadeh Seyed Reza Shadizadeh 《Petroleum》 2017年第3期355-366,共12页
The development of eco-friendly shale inhibitors is still an area which has attracted a lot of attention in the drilling industry.Henna extract is a natural dye which has recently shown considerable inhibition and wea... The development of eco-friendly shale inhibitors is still an area which has attracted a lot of attention in the drilling industry.Henna extract is a natural dye which has recently shown considerable inhibition and weak deflocculation properties in clay-water system.This study aims to investigate swelling inhibitive feature and side effects of Henna extract in water-based drilling fluids(WBDFs).It was carried out through extensive experiments including adsorption measurements on shale by batch equilibrium,inhibition evaluation by dynamic linear swelling and cuttings dispersion,wettability alteration via contact angle measurements,compatibility by rheological properties determinations and fluid loss measurements,and lubricity.Both in natural pH and adjusted pH to 9,Linear adsorption model was more suitable for anticipating the adsorption behavior of Henna extract on the given shale sample.The results of the linear swelling and cuttings dispersion tests demonstrated that Henna extract in drilling fluid formulations diminished the swelling and dispersion characteristics of the addressed shale sample.Moreover,contact angle measurements showed that Henna extract expanded the hydrophobicity of shale formations,preventing and promoting water adsorption and shale stability respectively.This issue definitely introduces wettability alteration as a mechanism for shale stability by Henna extract.Compatibility determinations additionally uncovered that Henna extract is compatible with common WBDFs additives.As indicated by the lubricity tests,Henna extract enhanced the lubricity of WBDFs,a finding which can be of an incredible significance in directional drilling.Among others,advantages such as environmental friendliness,low cost,accessibility,and the counter corrosion property make the applicability of Henna extract in WBDFs profoundly suitable. 展开更多
关键词 Shale inhibitors Natural dye water-based drilling fluids(WBDFs) ADSORPTION WETTABILITY Compatibility LUBRICITY
原文传递
Synthesis and mechanism of environmentally friendly high temperature and high salt resistant lubricants
20
作者 Zong-Lun Wang Jin-Sheng Sun +6 位作者 Jing-Ping Liu Kai-He Lv Zi-Hua Shao Xian-Fa Zhang Zhe Xu Zhi-Wen Dai Ning Huang 《Petroleum Science》 SCIE EI CSCD 2023年第5期3110-3118,共9页
With the exploration and development of deep and ultra-deep oil and gas,high torque and high friction during the drilling of deep and ultra-deep wells become one of the key issues affecting drilling safety and drillin... With the exploration and development of deep and ultra-deep oil and gas,high torque and high friction during the drilling of deep and ultra-deep wells become one of the key issues affecting drilling safety and drilling speed.Meanwhile,the high temperature and high salt problem in deep formations is prominent,which poses a major challenge to the lubricity of drilling fluids under high temperature and high salt.This paper reports an organic borate ester SOP as an environmentally friendly drilling fluid lubricant.The performance evaluation results show that when 1%lubricant SOP is added to the fresh water-based mud,the lubrication coefficient decreases from 0.631 to 0.046,and the reduction rate of lubrication coefficient is 92.7%.Under the conditions of 210℃ and 30%NaCl,the reduction rate of lubricating coefficient of the base slurry with 1%SOP was still remain 81.5%.After adding 1%SOP,the wear volume decreased by 94.11%compared with the base slurry.The contact resistance experiment during the friction process shows that SOP can form a thick adsorption film on the friction surface under high temperature and high salt conditions,thus effectively reducing the friction resistance.Molecular dynamics simulation shows that lubricant SOP can be physically adsorbed on the surface of drilling tool and borehole wall through hydrogen bond and van der Waals force.XPS analysis further shows that SOP adsorbs on the friction surface and reacts with metal atoms on the friction surface to form a chemically reactive film.Therefore,under high temperature and high salt conditions,the synergistic effect of physical adsorption film and chemical reaction film effectively reduces the frictional resistance and wear of the friction surface.In addition,SOP is non-toxic and easy to degrade.Therefore,SOP is a highly effective and environmentally friendly lubricant in high temperature and high salt drilling fluid. 展开更多
关键词 Deep oil and gas LUBRICANT Environmentally friendly water-based drilling fluid Molecular dynamics simulations
下载PDF
上一页 1 2 下一页 到第
使用帮助 返回顶部