川西洛带气田遂宁组气藏加砂压裂工艺技术研究及应用  

STUDY & APPLICATION OF HYDRAULIC FRACTURING TECHNOLOGY FOR THE SUINING GAS RESERVOIR OF LUODAI GAS FIELD IN WEST SICHUAN

作　　者：张朝举[1] 

机构地区：[1]中国石化西南石油局油气测试中心

出　　处：《钻采工艺》2006年第1期39-40,52,共3页Drilling & Production Technology

基　　金：中国石化油田部勘探先导项目"川西地区新层系储层预测与储层改造"的部分研究成果。

摘　　要：洛带气田遂宁组(J3sn)气藏储层具有孔渗性极差、地层压力低、粘土矿物含量高、砂泥互层、裂缝及微裂缝较发育、砂体分布范围小和纵横向上非均质性严重等特点,同时基质的供气能力差,单井自然产能低,该气藏在2002年之前、一直被当作以泥岩为主的区域性盖层(隔层)而被忽略。通过三年的压裂研究与应用,形成了“中前置液、中排量、中砂量、中砂比、微过量顶替、多层压裂”为特色的压裂改造工艺技术,压后单井平均增加无阻流量4.57×104m3/d,增产倍比高达18,增产效果非常明显,成为目前川西地区压裂改造效果最好的气藏之一。In Suining Formation Gas Reservoir of Luodai Gas Field, it has the following characteristic: poor porosity & penetrability, lower formation pressure, higher clay mineral content, sand and clay interlay, good fracture and micro-fracture, small range distribution of sand, and severe non-uniformity in vertical and horizontal, meanwhile poor gas supply capacity of matrix, lower production of single well by naturally. The Gas Reservoir was neglected being thought as clay cap before 2002. Through three years' study and application in fracturing, the new technology, which is as 'medium pad fluid, medium displacement, medium amount and ratio of silica sand, excessive displacing and multiple fracturing', has been applied to stimulate the reservoir. The stimulating result is remarkable after fracturing, the open flow capacity of single well has increased 4.57×104 m3/d, and the stimulating ratio is up to 18. The reservoir is one of the best reservoirs being stimulated by fracturing.

关 键 词：洛带气田 遂宁组 气藏 加砂压裂 应用 

分 类 号：TE377[石油与天然气工程—油气田开发工程]