多因素影响的脱砂压裂产能流固耦合模拟  

Fluid-solid coupling simulation of deliverability of screening out fracturing under influence of multiple factors

作　　者：赵益忠[1] 程远方[2] 智勤功[1] 张锡娟[1] 

机构地区：[1]胜利油田采油工艺研究院,山东东营257000 [2]中国石油大学石油工程学院,山东东营257061

出　　处：《辽宁工程技术大学学报（自然科学版）》2009年第S1期54-57,共4页Journal of Liaoning Technical University (Natural Science)

摘　　要：综合考虑流固耦合作用、动态造缝效应、变裂缝导流能力等因素,建立了新的疏松砂岩油藏脱砂压裂产能模型,进行了多因素影响的脱砂压裂产能优化。研究表明:在流固耦合作用下,近井眼及近裂缝壁面储层物性参数变化显著,远离井眼及人工裂缝后,储层物性参数变化幅度明显减小;动态造缝效应主要对近井眼中心10 m以内储层参数产生显著影响;定导流能力与变导流能力影响下的储层参数差异主要体现在裂缝周边;在多因素综合影响下,脱砂压裂增产倍数明显低于常规渗流模型计算结果,且缝长越短,各因素综合影响越显著。With comprehensive consideration of the factors,i.e.the fluid-solid coupling effect,the dynamic fracture creation effect and the variable fracture conductivity,a new model of deliverability analysis of screening out fracturing in unconsolidated sandstone reservoir is established,and the deliverability of screening out fracturing is optimized under the influence of multiple factors.Research demonstrates that the physical parameters of reservoir near the wellbore and fracture surface change dramatically under the influence of fluid-solid coupling effect,and the range ability of parameters decreases obviously far away from the wellbore and artificial fracture.The dynamic fracture creation has a noticeable influence on the parameters in the region 10m away from the wellbore axis.The variance of reservoir parameters is found near the fracture under the influence of variable flow conductivity.The stimulation ratio of fracturing is lower than conventional seepage model under the combined influence of multiple factors,and the influence of multiple factors increases dramatically with the decrease of fracture length.

关 键 词：疏松砂岩 脱砂压裂 产能 流固耦合 模拟 

分 类 号：TE357.2[石油与天然气工程—油气田开发工程]