低渗透油田小型分层压裂工艺实践  

Technological practice of small-scale layered fracturing

作　　者：孙鲜伟[1] 乔翠敏[1] 翟广红[1] 马翠岩[1] 王威[1] 刘金仓[2] 张风慧 

机构地区：[1]大港油田公司,天津300280 [2]华北油田公司,河北任丘062552

出　　处：《石油钻采工艺》2008年第3期90-92,104,共4页Oil Drilling & Production Technology

摘　　要：针对低渗透—特低渗透储层含油井段长,单井产量低,储层水敏性强的情况,通过采用分层段小规模多轮次水力压裂技术,对大港西斜坡油田进行整体增产改造。在室内岩心评价的基础上,采用了Viking-C改性胍胶压裂液体系及与地层相适应的Carbo-Lite中强度、低密度压裂砂,并合理设计压裂规模和裂缝参数,68.2%的施工采用了套管压裂注入方式,进行低排量、高砂比压裂施工,有效提高了单井产量,改善了低效油田的开发局面。As a low and extra - low permeability oilfield, Xixiepo Oilfield features in large non - producing and difficult - to - recover reserves, long oil - bearing intervals, low single - well production, and high water sensitivity. Small - scale layered multi - cycle hydraulic fracturing techniques are employed to increase the production of the oilfield. On the basis of lab core evaluation, the Viking - C modified guar gel fracturing fluid system and the mid - strength low - density Carbo -Lite fracturing sand appropriate to the formation are utilized. The fracturing scale and fracture parameters are rationally designed. The casing fracturing injection mode is used in 68.2% fracturing operation which features in low discharge capacity and high sand concentration. Single - well production is effectively increased, as well as the development of low - efficiency oilfields.

关 键 词：西斜坡油田 水力压裂 低渗透油藏 套管压裂 排量测试 

分 类 号：TE357.13[石油与天然气工程—油气田开发工程]