致密砂砾岩气藏储层改造关键技术研究  

Key technology study on tight sand-conglomerate reservoir reconstruction of gas reservoirs

作　　者：付育武[1] 马飞[1] 杨逸[1] 宋燕高[1] 

机构地区：[1]中国石化西南油气分公司工程技术研究院,四川德阳618000

出　　处：《石油地质与工程》2011年第1期134-136,146,共3页Petroleum Geology and Engineering

摘　　要：致密砂砾岩气藏储层由于岩性复杂、非均质性强,加砂压裂时面临易产生多裂缝及施工难度大等难题。以新场须四下亚段砂砾岩储层为例,通过对产生这些难点的原因进行分析,提出了具有针对性的措施。研究结果表明,可采取减小井斜度、优化射孔及段塞技术来控制多裂缝的产生,从而减少施工过程中压裂液的滤失量;针对不同特征的储层,优化了压裂施工的井口及管柱结构,在满足施工的同时,有利于后期测试和采气;实践表明所提出的针对性措施对于类似储层的改造具有较好的适用性。Multiple fractures will be occurred when sand fracturing operation to increase the difficulty of construction due to complex lithology and strong heterogeneity in tight gas reservoirs.This paper present pertinence measures in sand-conglomerate reservoir of lower section of T3X4 on the basis of analyzing the cause of difficult.The investigation indicates that multiple fractures can be controlled by reduce gradient,optimization perforation and slug to decrease filter loss of fracturing fluid in production.Wellhead and the column structure have been optimized for different characteris-tics of reservoir to meet construction and help later test and gas recovery.Results show that proposed specific measures for similar transformation of the reservoir has good applicability.

关 键 词：压裂 砂砾岩储层 多裂缝储层 储层改造 

分 类 号：TE357[石油与天然气工程—油气田开发工程]