川西马井气田蓬莱镇组气藏储层改造技术研究应用  

APPLIED RESEARCH ON STIMULATION TECHNOLOGY IN PENGLAIZHEN FORMATION IN MAJING GAS FIELD OF WEST SICHUAN

作　　者：黄禹忠[1] 任山[1] 林永茂[1] 杨永华[1] 何红梅[1] 钟水清[2] 张明文[2] 

机构地区：[1]中国石化西南分公司工程技术研究院 [2]四川石油管理局

出　　处：《钻采工艺》2007年第1期35-37,145,共3页Drilling & Production Technology

基　　金：中石化勘探工程技术先导项目<川西坳陷致密碎屑岩气藏低伤害压裂技术>的部分研究内容。

摘　　要：马井气田蓬莱镇组气藏埋藏深,是典型的低渗透致密砂岩储层,由于储层条件复杂,以前的储层改造效果不明显,措施成功率为72.8%、有效率仅为49.2%。自2005年来针对该气藏工程地质特征调试出低稠化剂压裂液,研究形成了优化加砂浓度、多层压裂工艺、线性斜坡式加砂工艺、低密度支撑剂应用、加大规模加砂压裂等集成技术。项目期间施工21口井,压后累计无阻流量179.1648×104m3/d,平均单井无阻流量8.5317×104m3/d,单井压后增产倍数达到12.60,压后单井平均无阻流量是2005年前的4.5倍,措施成功率90%,有效率提高到86.6%,效果明显。该集成技术为推动川西地区中浅层气藏难动用储量的开发提供了压裂改造技术思路和技术保障。Penglaizhen gas reservoir in Majing gas field has deep buried depth and is a tight sandstone gas reservoir with low permeability. The stimulation effects are very poor with fracturing success ratio of 72.8% and usefulness of 49.2%. Based on the geologic characteristic of the reservoir, fracturing fluid with low consistency has been developed since 2005, and integration hydraulic fracturing technology is formed. Through field application of these technologies in 21 wells, the stimulation effects are very good with fracturing success ratio of 90% and usefulness of 86.6%, the average single well open-flow capacity is 8.5317×104m3/d, average single well increase production is 4.5 times.

关 键 词：致密砂岩 蓬莱镇组 压裂液 压裂技术 川西 

分 类 号：TE377[石油与天然气工程—油气田开发工程]