高温高压裂缝性储层分层加砂压裂技术及应用  

SEPARATE LAYER SAND FRACTURING TECHNOLOGY AND ITS APPLICATION IN HIGH PRESSURE AND HIGH TEMPERATURE FRACTURED RESERVOIR

作　　者：邹鸿江[1,2] 袁学芳[2] 张承武[1,2] 车明光[3] 周然[1,2] 冯觉勇[2] 

机构地区：[1]川庆钻探钻采工程技术研究院 [2]塔里木油田分公司 [3]中石油勘探开发研究院

出　　处：《钻采工艺》2013年第3期55-58,8,共4页Drilling & Production Technology

基　　金：国家大型油气田及煤层气开发科技重大专项"塔里木盆地库车前陆冲断带油气开发示范工程"(2011ZX05046)部分内容

摘　　要：DB气田属于典型的超深高温高压巨厚裂缝性低渗气藏,改造难度大。分层压裂改造是开发该类储层,提高气田整体开发效果的有效手段。文章结合DB气田储层特征,开展了地应力剖面结合储层裂缝特征的分层技术研究,优化分层改造管柱结构配置及相关配套技术研究等。通过研究,形成适宜的分层压裂工艺技术,并在X102井首次应用,施工排量3.7～4.5m3/min,最大施工泵压102MPa,共注入地层液量1211m3,加砂76.9m3,最高砂浓度369kg/m3。通过压后效果评估表明,压裂形成了长的人工支撑裂缝,沟通天然裂缝系统;分层效果明显,储层得到有效动用,增产效果显著。该工艺成功应用,解决了DB气田分层压裂技术瓶颈,为气田高效开发提供有力的技术支撑,对库车山前同类区块也具有重要推广和借鉴意义。DB gas field is typical of deep thick, high temperature, high pressure and fractured low - permeability gas reservoirs, conventional fracturing effects is poor. Separate layer fracturing is an effective means of developing the reservoir and improving the effect of gas field development. According to the DB gas field characteristics, the separate layer fracturing technology was studied, the allocation of separate layer fracturing string structure and the related supporting technologies were optimized. Through research, the separate layer fracturing technology suited for DB gas field was formed and was applied successfully in x102 well in the first time. The postfracture response evaluation showed that the long manmade fracture was formed and was connected with natural fracture system, the effect of increase production was outstanding. The successful application of technology provided technical support for gas field high efficiency development.

关 键 词：高温高压 深井 裂缝性 低渗气藏 分层压裂 

分 类 号：TE357[石油与天然气工程—油气田开发工程]