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Study of sedimentary sequence cycles by well-seismic calibration 被引量:4
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作者 Xu Jingling Liu Luofu +2 位作者 Wang Guiwen Zou Changchun Lai Jin 《Petroleum Science》 SCIE CAS CSCD 2013年第1期65-72,共8页
In order to solve the problems of the fine division of sedimentary sequence cycles and their change in two-dimensional space as well as lateral extension contrast, we developed a method of wavelet depth-frequency anal... In order to solve the problems of the fine division of sedimentary sequence cycles and their change in two-dimensional space as well as lateral extension contrast, we developed a method of wavelet depth-frequency analysis. The single signal and composite signal of different Milankovitch cycles are obtained by numerical simulation. The simulated composite signal can be separated into single signals of a single frequency cycle. We also develop a well-seismic calibration insertion technology which helps to realize the calibration from the spectrum characteristics of a single well to the seismic profile. And then we determine the change and distribution characteristics of spectrum cycles in the two-dimensional space. It points out the direction in determining the variations of the regional sedimentary sequence cycles, underground strata structure and the contact relationship. 展开更多
关键词 Sedimentary sequence cycles wavelet depth-frequency analysis well-seismic calibration spectrum cycles well logging
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湖相页岩油层孔隙度井-震双控建模
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作者 欧成华 王泽宇 +6 位作者 闫博 张连进 彭仕轩 张飞 毛正林 徐睿 薛赛红 《断块油气田》 CAS CSCD 北大核心 2024年第6期1021-1030,共10页
针对我国湖相页岩油分布范围广,储层岩性复杂、单层厚度薄、储集物性差、纵横向非均质性强等地质特征,提出了湖相页岩油层孔隙度井-震双控建模技术系列:1)岩心标定测井。测井识别湖相页岩岩相并解释出孔隙度参数,采用层控方法建立岩相... 针对我国湖相页岩油分布范围广,储层岩性复杂、单层厚度薄、储集物性差、纵横向非均质性强等地质特征,提出了湖相页岩油层孔隙度井-震双控建模技术系列:1)岩心标定测井。测井识别湖相页岩岩相并解释出孔隙度参数,采用层控方法建立岩相三维模型,利用层控加岩相控制策略建立测井孔隙度三维模型。这虽保证了湖相页岩油层孔隙度模型的纵向预测精度,但横向预测精度不足。2)地震属性提取与优化。经过测井解释孔隙度粗化,采用遗传反演方法,结合时深转换,建立深度域地震孔隙度三维模型,完成对湖相页岩油层的横向非均质性精细刻画。此结果的纵向非均质性刻画精度有限。3)井-震双控孔隙度建模技术。依靠建模方法优选与参数优化,以测井孔隙度三维模型为主变量,地震孔隙度三维模型为次变量,完成井-震双控孔隙度建模及可靠性检验,实现对湖相页岩油层孔隙度的可靠表征。 展开更多
关键词 湖相页岩油 井-震双控 地质建模 岩相分析 遗传反演
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Breakthrough and significance of technology on internal multiple recognition and suppression: A case study of Ordovician Dengying Formation in Central Sichuan Basin, SW China
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作者 GAN Lideng XIAO Fusen +10 位作者 DAI Xiaofeng YANG Hao XU Youping RAN Qi WEI Chao XIE Zhan'an ZHANG Xuan LIU Weidong ZHANG Ming SONG Jianyong LI YANDong 《Petroleum Exploration and Development》 2018年第6期1023-1035,共13页
Aimed at the serious mismatch between the synthetic seismogram and the real data of the Sinian Dengying Formation and the Lower Cambrian Qiongzhusi Formation in the GS1 well area, Sichuan Basin, four aspects of intern... Aimed at the serious mismatch between the synthetic seismogram and the real data of the Sinian Dengying Formation and the Lower Cambrian Qiongzhusi Formation in the GS1 well area, Sichuan Basin, four aspects of internal multiples identification and suppression were studied. Firstly, a forward modeling method of internal multiple based on reflectivity method was developed. Through eight means such as post-stack and pre-stack forward modeling of internal multiple, and combined with VSP data, it was demonstrated that well-seismic mismatching in this area is mainly caused by the internal multiples. Secondly, the simulation results of internal multiple forward modeling using the stripping method combined with the internal multiple periodicity analysis showed that four groups of overburden layers with velocity inversion were the main sources of the internal multiples. Thirdly, by identifying internal multiples accurately and using suppression technology based on pattern recognition, an effective and replicable suppression scheme suitable for these formations was established, overcoming the difficulty of the small speed difference between internal multiple and primary reflection wave which makes the current methods ineffective. Fourthly, an evaluation index of internal multiple intensity was proposed, and the internal multiple intensity distribution diagram of the fourth member of Dengying Formation(Deng-4 Member) in Gaoshiti-Moxi area was compiled. This scheme greatly improved the well-seismic match, and the strata sedimentary features are clearer on the new seismic profiles with higher lateral resolution, with which smaller faults and geological anomalies can be identified and a series of the bead reflections in the Dengying Formation are first discovered. The coincidence rate of reservoir prediction based on seismic waveform classification was increased from 60% to 90%, and that of hydrocarbon detection based on dual phase medium theory was increased from 70% to 100%. 展开更多
关键词 INTERNAL MULTIPLE reflectivity method forward modeling well-seismic match velocity inversion SEISMIC waveform classification hydrocarbon detection Sichuan Basin SINIAN Dengying Formation
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An Optic/Proton Dual-Controlled Fluorescence Switch based on Novel Photochromic Bithienylethene Derivatives 被引量:3
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作者 张佳琦 靳家玉 +1 位作者 张隽佶 邹雷 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2012年第8期1741-1747,共7页
A simple method for the synthesis of new bithienylethenes bearing a functional group on the cyclopentene moi- ety is developed. Three new photochromic compounds (4a, 4b, 4c) have been successfully synthesized throug... A simple method for the synthesis of new bithienylethenes bearing a functional group on the cyclopentene moi- ety is developed. Three new photochromic compounds (4a, 4b, 4c) have been successfully synthesized through this simple method, and exhibit good photochromic properties with alternate irradiation of ultraviolet and visible light. Furthermore, the fluorescence of compound 4a, which bears a quinoline unit on the cyclopentene, can be modulated via optic and proton dual inputs. Upon excitation by 320 nm light, 4a emits a strong fluorescence at 404 nm. After irradiation with 254 nm light, the emission intensity is reduced due to the fluorescence resonance energy transfers (FRET) from quinoline unit to bithienylethene unit. Moreover, on addition of H~, the fluorescence is quenched completely due to the protonation of the quinoline. In addition, both the FRET and protonation process are reversi- ble, which indicates a potential application in molecular switches and logic gates. 展开更多
关键词 PHOTOCHROMISM DIARYLETHENES dual-control fluorescence
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An FPS-ZM1-encapsulated zeolitic imidazolate framework as a dual proangiogenic drug delivery system for diabetic wound healing 被引量:2
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作者 Yi Sun Bingbo Bao +8 位作者 Yu Zhu Junjie Shen Xuanzhe Liu Tao Gao Junqing Lin Tengli Huang Jia Xu Yimin Chai Xianyou Zheng 《Nano Research》 SCIE EI CSCD 2022年第6期5216-5229,共14页
Inhibitors that target diabetes pathology-related signaling pathways have great therapeutic potential for diabetic wound healing.Metal–organic frameworks(MOFs)are increasingly popular drug delivery systems that have ... Inhibitors that target diabetes pathology-related signaling pathways have great therapeutic potential for diabetic wound healing.Metal–organic frameworks(MOFs)are increasingly popular drug delivery systems that have high loading capacity and can release their intrinsic metal ions to act as bioactive agents.In light of this,a receptor for advanced glycation end products(RAGE)inhibitor,4-chloro-N-cyclohexyl-N-(phenylmethyl)-benzamide(FPS-ZM1),was loaded into a cobalt(Co)-based MOF(zeolitic imidazolate framework-67,ZIF-67)to fabricate FPS-ZM1 encapsulated ZIF-67(FZ@ZIF-67)nanoparticles(NPs).As a result,FZ@ZIF-67 NPs could dually deliver Co ions and FPS-ZM1 in a controlled manner for over 14 days.Our in vitro study showed that FZ@ZIF-67 NPs not only enhanced angiogenesis by delivering Co ions but also released FPS-ZM1 to promote M2 macrophage polarization and attenuated high glucose(HG)-and/or inflammation-induced impairment of angiogenesis through RAGE inhibition.Moreover,in an in vivo study,FZ@ZIF-67 NPs markedly improved re-epithelialization,collagen deposition,neovascularization,and relieved inflammation in diabetic wounds in rats.This study not only provides a low-cost,effective,and synergistic proangiogenic bioactive agent but also demonstrates that targeting diabetes-related pathological signaling pathways is necessary to ameliorate vascularization impairment during diabetic wound healing. 展开更多
关键词 zeolitic imidazolate framework-67 drug delivery dual-controlled release angiogenesis diabetic wound
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