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大庆外围油田注水开发综合调整技术研究 【作者】李莉 【导师】黄延章; 计秉玉

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大庆外围油田注水开发综合调整技术研究

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Q*? o4_0Aa0作者李莉导师黄延章; 计秉玉
!P%Glgi)]Q] bQ:z0【作者基本信息】中国科学院研究生院(渗流流体力学研究所),流体力学,2006年,博士水利论文LA3}}J+j hD

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【中文摘要】 大庆外围已开发油田为低渗、低产、低丰度的“三低”油藏,属于注水开发难度大,经济效益较差的边际油田。随着注水开发的不断深入,外围油田注水开发中暴露出的矛盾和问题更加突出,注水开发难度越来越大,需要通过地质、开发、措施更为有效的结合,采取更加有效的综合调整对策和措施,才能改善外围已开发油田的开发效果,提高边际油田开发经济效益。 本文根据大庆外围已开发油田的地质特点和开发动态实际,研究出了以油藏地质分类为基础,以开发水平分级、开发程度分级和经济效益分类为要素,以制定综合调整对策为目标的多层次、多因素区块综合分类方法,将已开发区块分成综合四类。应用低渗透储层非达西渗流理论和现代油藏工程方法,分析了裂缝性储层渗流特征,发展了低渗透油藏有效驱动理论,建立了渗吸采油机理模型和注采比模型,研究出了低渗透油藏采收率计算改进方法。系统分析了外围已开发区块注水开发动用状况、产量递减规律和剩余油分布状况,研究出了注水开发适应性评价方法,将外围已开发区块评价为注水系统和井网适应、注采系统不适应和井网不适应三大类。研究了外围油阳井网加密调整、注采系统调整的调整效果、调整方式和调整界限及调整潜力,开展了包括微生物吞...更多吐和驱油、蒸汽吞吐及加密水平井注水在内的非常规措施采油可行性研究和矿场试验研究,研究了微生物吞吐和驱油、蒸汽吞吐开采适应条件及开发潜力,探索了加密水平井注水开发可行性及开发设计技术。 在此基础上制定了各类区块综合调整对策,并对已开发区块作出了3年内调整部署。该项目研究成果由于针对性、实用性强,在外围油田2006年、2007年和2008年开发调整部署中得到了应用,并取得了较好的综合调整效果和经济效益。  还原

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O"[M%j3Qo*]0【英文摘要】 Daqing periphery developed oilfields are reservoirs of low permeability, low production and low abundance, as marginal fields with poor economic benefit and great water flooding development challenges. With further water flooding development, more complex issues and problems emerge than normal and water flooding is getting more difficult. The development effect and the economic benefit of such marginal fields, therefore, can be improved only through effective integration of geology study, development design and treatment measures and adopting more efficient comprehensive adjustment policy and measures.In this article, according to the geological features and production performance of the Daqing periphery developed oilfields, a multi-level and multi-factor comprehensive classification method is developed based on reservoir geological classification, taking account of factors of development level classification, development degree classification and economic benefit classification, aimin...更多g to formulate comprehensive adjustment policies. The developed blocks are divided into four comprehensive categories. Applying low permeability reservoir non-Darcy filtration theory and modern reservoir engineering methods, the fractured reservoir filtration features are analyzed, the low permeability reservoir effective displacement theory is developed, the imbibition production mechanism model and the injection-production ratio model are established, and the low permeability reservoir recovery factor calculation improvement method is studied. The water flooding development status, production decline laws and remaining oil distribution status in the peripheral developed blocks have been systematically analyzed. A water flooding development adaptability evaluation method is developed, dividing the peripheral developed blocks evaluation into three categories: water injection system and well pattern adaptable, injection-production system inadaptable, and well pattern inadaptable. The peripheral oilfields well pattern infilling adjustment, injection-production system adjustment effect, adjustment mode, limit and potential are studied. The study on the feasibility of production by unconventional measures and field tests are carried out including microbe huff and puff oil displacement, steam huff and puff, and horizontal well infilling water flooding adjustment. The adaptable conditions of development potential of microbe huff and puff oil displacement and steam huff and puff recovery are studied. The feasibility and design technology of horizontal well infilling water flooding development are explored.Basing on this, the comprehensive adjustment policies for each category are formulated and an adjustment disposition for the developed blocks in three years is scheduled. Because of the good orientation and practicability of the project study, it is applied in the adjustment disposition for 2006, 2007 and 2008, and has obtained a comparatively favorable comprehensive adjustment effect and economic benefit.  还原水利论文ke"V)u2Xbd aK

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【中文关键词】 低渗透油藏; 注水开发; 分类评价; 调整理论; 井网加密; 注采系统调整; 非常规措施采油
\"p}p$l?-R0【英文关键词】 water flooding development; classified evaluation; adjustment theory; well pattern infilling; injection-production system adjustment; production by unconventional measures
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