地层伤害建模研究进展  

Progress in reservoir formation damage modeling

作　　者：冀登武[1] 蓝强[2] 李公让[2] 张敬辉[2] 

机构地区：[1]中国石化股份胜利油田分公司勘探项目管理部,山东东营257000 [2]中国石化集团胜利石油管理局钻井工艺研究院,山东东营257017

出　　处：《油气地质与采收率》2011年第3期98-102,118,共5页Petroleum Geology and Recovery Efficiency

基　　金：国家科技重大项目"低渗油气田高效开发钻井技术"课题四"低渗油气田储层保护技术"(2011ZX05022-004)

摘　　要：地层伤害包括细颗粒和有机/无机沉积物的运移、沉积和固定,细颗粒在孔隙表面引起的不同问题可以描述成多相流体流经多孔介质时孔喉处的堵塞、解堵、聚集和界面颗粒的传递过程,这些行为包含了不同的力学、化学和热传递过程。综述了引起储层伤害的不同颗粒运移过程的现象学模型,讨论了不同力学、化学和热力学过程对颗粒行为的影响。给出的模型可用来解释注水效率降低、颗粒的地层伤害、钻井液侵入的地层伤害、储层天然裂缝发育的地层伤害以及沥青沉淀、出砂和砾石堵塞伤害等现象,并为储层保护提供决策依据。Herein, we mainly summarize the various processes inducing the reservoir formation damage. The formation damage mechanism includes the mobilization of small particles, inorganic and organic particles deposits, which can be modeled by physics and mathematical. The behavior of fine particles on the pore surface including dislodgment and clogging of porethroat, aggregation and transportation of interfacial particles has been described. The modeling of the particulate processes in multiple-porosity reservoir formations is presented. The alteration about the preferential hydraulic paths, pore connectivity, permeability and porosity of reservoir media with the various particulate processes are established. The models can be applied in the explanation of the reservoir damage caused by the process of injectivity decline in water-flooding wells, in naturally fractured reservoirs, in drilling mud invasion, production, asphalt deposition and gravel packing radius.

关 键 词：地层伤害 数学建模 影响因素 颗粒运移 多孔介质 孔喉尺寸 

分 类 号：TE258[石油与天然气工程—油气井工程]