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探讨钻井工艺中的固井新方法
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作者 史文元 《科技与生活》 2010年第7期129-129,123,共2页
目前油田上所用的下套管及防止水泥浆倒灌装置的原理,说明其存在的缺点。与其对比,为克服这些缺点,提出能满足油田工艺需要的新的自灌浆固井凡尔的设计思想。并探讨该装置的结构、功能,详细说明该装置各个部分的联接组成。设计该装... 目前油田上所用的下套管及防止水泥浆倒灌装置的原理,说明其存在的缺点。与其对比,为克服这些缺点,提出能满足油田工艺需要的新的自灌浆固井凡尔的设计思想。并探讨该装置的结构、功能,详细说明该装置各个部分的联接组成。设计该装置的模拟实验系统。 展开更多
关键词 水泥浆倒灌 套管串 碰压 完钻井 环形空间 模拟试验
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连20井喜获高产工业油流
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作者 魏尚武 《吐哈油气》 2000年第1期70-70,共1页
由研究院开发二室设计部署的连木沁油田西块扩边井一连20井,近日获高产工业油流,标志着红连油田扩边又一次新突破。为了落实连木沁油田西块构造,新钻连20井,该井于2月19日开始,3月4日完钻,完钻井深1700m,测井解释油层3层12.8m,油水同层1... 由研究院开发二室设计部署的连木沁油田西块扩边井一连20井,近日获高产工业油流,标志着红连油田扩边又一次新突破。为了落实连木沁油田西块构造,新钻连20井,该井于2月19日开始,3月4日完钻,完钻井深1700m,测井解释油层3层12.8m,油水同层1层9.8m。红连项目组经过深入研究。 展开更多
关键词 工业油流 油田 高产 解释 新突破 扩边 综合分析 油水同层 完钻井 低阻油层
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固井新方法探讨
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作者 宋岩松 吴海丰 +3 位作者 李树和 陈树刚 刘振龙 鲁改欣 《机械工程师》 2007年第8期127-128,共2页
介绍了目前油田上所用的下套管及防止水泥浆倒灌装置的原理,说明了其存在的缺点,并提出了能满足油田固井工艺需要的新型下套管装置—自灌浆固井凡尔的设计思想,探讨了该装置的结构、功能,详细说明了该装置各个部分的联接组成,还设计了... 介绍了目前油田上所用的下套管及防止水泥浆倒灌装置的原理,说明了其存在的缺点,并提出了能满足油田固井工艺需要的新型下套管装置—自灌浆固井凡尔的设计思想,探讨了该装置的结构、功能,详细说明了该装置各个部分的联接组成,还设计了该装置的模拟实验系统。 展开更多
关键词 水泥浆倒灌 套管串 碰压 完钻井 环形空间 模拟试验
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Stability of finite difference numerical simulations of acoustic logging-while-drilling with different perfectly matched layer schemes 被引量:2
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作者 王华 陶果 +2 位作者 尚学峰 方鑫定 Daniel R Burns 《Applied Geophysics》 SCIE CSCD 2013年第4期384-396,510,511,共15页
In acoustic logging-while-drilling (ALWD) finite difference in time domain (FDTD) simulations, large drill collar occupies, most of the fluid-filled borehole and divides the borehole fluid into two thin fluid colu... In acoustic logging-while-drilling (ALWD) finite difference in time domain (FDTD) simulations, large drill collar occupies, most of the fluid-filled borehole and divides the borehole fluid into two thin fluid columns (radius -27 mm). Fine grids and large computational models are required to model the thin fluid region between the tool and the formation. As a result, small time step and more iterations are needed, which increases the cumulative numerical error. Furthermore, due to high impedance contrast between the drill collar and fluid in the borehole (the difference is 〉30 times), the stability and efficiency of the perfectly matched layer (PML) scheme is critical to simulate complicated wave modes accurately. In this paper, we compared four different PML implementations in a staggered grid finite difference in time domain (FDTD) in the ALWD simulation, including field-splitting PML (SPML), multiaxial PML(M- PML), non-splitting PML (NPML), and complex frequency-shifted PML (CFS-PML). The comparison indicated that NPML and CFS-PML can absorb the guided wave reflection from the computational boundaries more efficiently than SPML and M-PML. For large simulation time, SPML, M-PML, and NPML are numerically unstable. However, the stability of M-PML can be improved further to some extent. Based on the analysis, we proposed that the CFS-PML method is used in FDTD to eliminate the numerical instability and to improve the efficiency of absorption in the PML layers for LWD modeling. The optimal values of CFS-PML parameters in the LWD simulation were investigated based on thousands of 3D simulations. For typical LWD cases, the best maximum value of the quadratic damping profile was obtained using one do. The optimal parameter space for the maximum value of the linear frequency-shifted factor (a0) and the scaling factor (β0) depended on the thickness of the PML layer. For typical formations, if the PML thickness is 10 grid points, the global error can be reduced to 〈1% using the optimal PML parameters, and the error will decrease as the PML thickness increases. 展开更多
关键词 PML schemes FD simulation LWD acoustic
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连木沁油田绽放报春花
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《吐哈油气》 2001年第1期5-5,共1页
连18井喜获高产油流连木沁油田北块扩边井—连18井,近日获高产商业油流,成为吐哈油田开发扩边的第一枝报春花,标志着红连油田开发扩边再获突破。连18井由研究院开发二室设计部署。科研人员围绕科技创新,精雕细刻,大胆部署了连18井,以落... 连18井喜获高产油流连木沁油田北块扩边井—连18井,近日获高产商业油流,成为吐哈油田开发扩边的第一枝报春花,标志着红连油田开发扩边再获突破。连18井由研究院开发二室设计部署。科研人员围绕科技创新,精雕细刻,大胆部署了连18井,以落实连木沁油田北块的构造及含油性。这口井于2月4日开钻,完钻井深1800米。3月8日试油求产,抽油3小时产油24立方米。连18井扩边成功,扩大了红连油田的含油面积,为红连油田持续高产稳产奠定了物质基础。 展开更多
关键词 油田开发 报春花 吐哈油田 科技创新 扩边 高产稳产 含油性 科研人员 油流 完钻井
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百分之百的勘探成功率是如何得来的
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《天然气技术与经济》 1997年第1期26-27,共2页
川西南矿区近4年来的勘探成果统计表明,1993—1995年,矿区每年的勘探成功率都只有62.5%,3年共有12口井未获气。而1996年,矿区完钻井9口,获气井9口,井井见气,勘探成功率达到100%。
关键词 勘探成功率 川西南矿区 思想认识 科技工作者 成果统计 前期论证 勘探领域 完钻井 勘探开发
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Research and applications of novel jet techniques in well drilling,completion and fracturing 被引量:3
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作者 LI GenSheng SHEN ZhongHou +4 位作者 HUANG ZhongWei TIAN ShouCeng SHI HuaiZhong SONG XianZhi WANG HaiZhu 《Science Foundation in China》 CAS 2014年第2期68-80,共13页
Oil and gas have long been regarded as key elements for any industrialized country.China's economy and social security are largely dependent on oil and gas exploration and development.Nowadays,a great deal of atte... Oil and gas have long been regarded as key elements for any industrialized country.China's economy and social security are largely dependent on oil and gas exploration and development.Nowadays,a great deal of attention has been paid to various ways of efficiently developing oil and gas reserves.This paper presents an overview of research and applications of novel jet techniques in well-drilling,well-completion and fracturing.Supported by the National Natural Science Foundation of China,through years of effort,significant achievements have been made in this area.Not only has the systematic theory of novel jetting been established,but also its application has been proved practical in petroleum engineering.This paper focuses on the topics of the self-resonating cavitating jet,the abrasive water jet,and the supercritical CO_2 jet,in respect of theories,applications and prospects. 展开更多
关键词 Cavitating jet Abrasive water jet Supercritical carbon dioxide Well-drilling Well-completion FRACTURING Enhanced oil and gas recovery
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