考虑变形影响的致密砂岩油藏非线性渗流特征

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (0 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract The process of water flooding met the law of non-Darcy flow and existed threshold pressure gradient in tight sandstone reservoirs. Porous medium would get deformed，and the permeability would decrease. The nanometer pore characteristics of tight sandstone through scanning electron microscope(SEM) experiment were researched. Based on the distribution of rock particles，a theory model which characterized stress sensitivity caused by medium deformation was established and medium deformation coefficient was derived. The comparison analysis of results between the theory model and experiment is performed. Moreover，a seepage mathematical model was established which took the deformation of tight sandstone into consideration. The coupling influences of the threshold pressure gradient and medium deformation on the oil-water two-phase nonlinear percolation feature are studied. The result shows that the flow resistance and formation pressure drawdown loss increase under the coupling effects of threshold pressure gradient and medium deformation. Moreover，with the increase of production duration，amplitude of pressure drawdown loss would increase.

Key words： rock mechanics medium deformation tight sandstone reservoir nanometer pores threshold pressure gradient medium deformation coefficient

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors

Cite this article:

URL:

https://rockmech.whrsm.ac.cn/EN/Y2013/V32/Is2/3187

[1] RAGHAVAN R，MILLER F G. An investigation by numerical methods of the effect of pressure dependent rock and fluid properties on well flow tests[J]. Society of Petroleum Engineers Journal，1972，12(3)：267–275. [2] SAMANIEGO V F. An investigation of transient flow of reservoir fluids considering pressure dependent rock and fluid properties[J]. Society of Petroleum Engineers Journal，1977，17(2)：141–150. [3] SAMANIEGO V F，CINCO-LEY H. Production rate decline in pressure sensitive reservoirs[J]. Journal of Canadian Petroleum Technology，1980，19(3)：75–86. [4] FATT I，DAVIS D H. Reduction in permeability with overburden pressure[J]. Petroleum Transaction，1952，4(12)：34–41. [5] KIKAN J，PESTRA O A JR. Perturbation analysis of stress-sensitive reservoirs[J]. Society of Petroleum Engineers Formation Evaluation，1991，6(3)：379–386. [6] ZHANG M Y，AMBASTHA A K. New insights in pressure-transient analysis for stress-sensitive reservoirs[C]// Society of Petroleum Engineers Annual Technical Conference and Exhibition. [S.l.]：[s.n.]，1994：617–628. [7] WARREN J E，ROOT P J. The behavior of naturally fractured reservoirs[J]. Society of Petroleum Engineers Journal，1963，3(3)：245–255. [8] PEDROSA O A Jr. Pressure transient response in stress-sensitive formation[C]// Society of Petroleum Engineers15115，Society of Petroleum Engineers California Regional Meeting. [S.l.]：[s.n.]，1986：203–210. [9] 邓英尔，刘慈群. 垂直裂缝井开发低渗透油藏非线性渗流压力分析[J]. 石油勘探与开发，2003，30(1)：81–83.(DENG Yinger，LIU Ciqun. Analysis of pressure of nonlinear flow through low- permeability reservoir with vertically fractured well producing[J]. Petroleum Exploration and Development，2003，30(1)：81–83.(in Chinese)) [10] 计秉玉，李莉，王春艳. 低渗透油藏非达西渗流面积井网产油量计算方法[J]. 石油学报，2008，29(2)：256–261.(JI Bingyu，LI Li，WANG Chunyan. Oil production calculation for areal well pattern of low-permeability reservoir with non-Darcy seepage flow[J]. Acta Petrolei Sinica，2008，29(2)：256–261.(in Chinese)) [11] 王晓冬，侯晓春，郝明强，等. 低渗透介质有启动压力梯度的不稳态压力分析[J]. 石油学报，2011，32(5)：847–851.(WANG Xiaodong，HOU Xiaochun，HAO Mingqiang，et al. Pressure transient analysis in low-permeable media with threshold gradients[J]. Acta Petrolei Sinica，2011，32(5)：847–851.(in Chinese)) [12] 刘曰武，丁振华，何凤珍. 确定低渗透油藏启动压力梯度的三种方法[J]. 油气井测试，2002，11(4)：1–4.(LIU Yuewu，DING Zhenhua，HE Fengzhen. Three kinds of methods for determining the start-up pressure gradient in low permeability reservoir[J]. Well Testing，2002，11(4)：1–4.(in Chinese)) [13] 宋付权，刘慈群，李凡华. 低渗透介质含启动压力梯度一维瞬时压力分析[J]. 应用数学和力学，1999，20(1)：25–32.(SONG Fuquan，LIU Ciqun，LI Fanhua. Transient pressure of percolation through one dimension porous media with threshold pressure gradient[J]. Applied Mathematics and Mechanics，1999，20(1)：25–32.(in Chinese)) [14] 尹洪军，何应付. 变形介质油藏渗流规律和压力特征分析[J]. 水动力学研究与进展，2002，17(5)：538–546.(YIN Hongjun，HE Yingfu. Analysis of flow through porous media and pressure characteristics deformed reservoirs[J]. Journal of Hydrodynamics，2002，17(5)：538–546.(in Chinese)) [15] 宋付全，刘慈群. 变形介质油藏压力产量分析方法[J]. 石油勘探与开发，2000，27(1)：57–59.(SONG Fuquan，LIU Ciqun. Analysis of pressure and production in deformable media[J]. Petroleum Exploration and Development，2000，27(1)：57–59.(in Chinese)) [16] 王玉英，王晓冬，王一飞，等. 变形介质储层油井合理压差及产能分析[J]. 大庆石油学院学报，2005，29(4)：51–54.(WANG Yuying，WANG Xiaodong，WANG Yifei，et al. Analysis of reasonable pressure difference and productivity of oil wells in deformed media reservoirs[J]. Journal of Daqing Petroleum Institute，2005，29(4)：51–54.(in Chinese)) [17] 苏玉亮，栾志安，张永高. 变形介质油藏开发特征[J]. 石油学报，2000，21(2)：51–55.(SU Yuliang，LUAN zhi?an，ZHANG Yonggao. A study on development characteristics for deformed reservoir[J]. Acta Petrolei Sinica，2000，21(2)：51–55.(in Chinese)) [18] 王延峰，刘曰武，贾振岐. 介质变形引起地层孔渗变化条件下的试井分析[J]. 西安石油大学学报：自然科学版，2004，19(2)：17–20.(WANG Yanfeng，LIU Yuewu，JIA Zhenqi. Well test analysis under the variation of porosity and permeability caused by formation deformation[J]. Journal of Xi?an Shiyou University：Natural Science，2004，19(2)：17–20.(in Chinese)) [19] 刘丽. 低渗透油藏启动压力梯度的应力敏感性实验研究[J]. 油气地质与采收率，2012，19(2)：81–83.(LIU Li. Laboratory study on stress sensitivity of threshold pressure gradient in low permeability reservoirs[J]. Petroleum Geology and Recovery Efficiency，2012，19(2)：81–83.(in Chinese)) [20] 郭平，任俊杰，汪周华. 非达西渗流效应对低渗透气藏水平井产能的影响[J]. 天然气工业，2011，31(1)：55–58.(GUO Ping，REN Junjie，WANG Zhouhua. Impact of non-Darcy flow on the deliverability of horizontal wells in low-permeability gas reservoirs[J]. Natural Gas Industry，2011，31(1)：55–58.(in Chinese)) [21] 张楠，王晓琴，徐锋，等. 启动压力梯度和应力敏感效应对低渗透油藏直井产能的影响[J]. 特种油气藏，2012，19(1)：74–77.(ZHANG Nan，WANG Xiaoqin，XU Feng，et al. Effects of kickoff pressure gradient and stress sensitivity on the productivity of vertical wells in low permeability reservoirs[J]. Special Oil and Gas Reservoirs，2012，19(1)：74–77.(in Chinese)) [22] 熊建，李凌峰. 变形介质低渗透气藏水平井产能分析[J]. 天然气与石油，2011，29(5)：50–52.(XIONG Jian，LI Lingfeng. Analysis of horizontal well productivity in low permeability gas reservoirs with deformation medium[J]. Natural Gas and Oil，2011，29(5)：50–52.(in Chinese)) [23] 郭肖，伍勇. 启动压力梯度和应力敏感效应对低渗透气藏水平井产能的影响[J]. 石油与天然气地质，2007，28(4)：539–543.(GUO Xiao，WU Yong. Influence of start-up pressure gradient and stress sensitivity on productivity of low-permeability gas reservoirs[J]. Oil and Gas Geology，2007，28(4)：539–543.(in Chinese)) [24] 刘文超，姚军，李爱芬，等. 考虑压敏效应的低渗透油藏非线性流动特征[J]. 中国科学技术大学学报，2012，42(2)：279–288.(LIU Wenchao，YAO Jun，LI Aifen，et al. Nonlinear flow characteristics in low-permeability reservoirs with stress sensitive effect[J]. Journal of University of Science and Technology of China，2012，42(2)：279–288.(in Chinese)) [25] 谢全，何顺利，焦春艳，等. 超低渗透储层饱和/非饱和渗流启动压力梯度试验研究[J]. 岩石力学与工程学报，2011，30(1)：3 129– 3 134.(XIE Quan，HE Shunli，JIAO Chunyan，et al. Experimental investigation on threshold pressure gradient in saturated/unsaturated flows in ultra-low permeability reservoirs[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(1)：3 129–3 134.(in Chinese)) [26] 谢全，焦春艳，崔丽萍，等. 低渗透单相非线性渗流机制试验研究[J]. 岩石力学与工程学报，2011，30(2)：3 975–3 981.(XIE Quan，JIAO Chunyan，CUI Liping，et al. Experimental investigation on single-phase non-linear flow in low permeability cores[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(2)：3 975–3 981. (in Chinese)) [27] 董平川，江同文，唐明龙. 异常高压气藏应力敏感性研究[J]. 岩石力学与工程学报，2008，27(10)：2 087–2 093.(DONG Pingchuan，JIANG Tongwen，TANG Minglong. Research on stress-sensitivity in abnormal high pressure gas reservoir[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(10)：2 087–2 093. [28] GANGI A F. Variation of whole and fractured porous rock permeability with confining pressure[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1978，15(5)：249–257. [29] 李传亮. 应力敏感对油井产能的影响[J]. 西南石油大学学报：自然科学版，2009，31(1)：170–172.(LI Chuanliang. Stress senditivity influence on oil well productivity[J]. Journal of Southwest Petroleum University：Science and Technology，2009，31(1)：170–172.(in Chinese))