新场气田上沙溪庙组气藏井间连通与裂缝发育关系初探  

Preliminary study on interwell communication and fracture development in the upper Shaximiao gas reservoir of the Xinchang gas field

作　　者：王旭[1] 李祖友[1] 邓文龙[1] 严小勇[1] 徐广鹏[1] 

机构地区：[1]中石化西南油气分公司,四川德阳618000

出　　处：《特种油气藏》2011年第2期73-75,139,共3页Special Oil & Gas Reservoirs

基　　金："十一五"国家科技攻关项目二级专题"四川盆地碎屑岩测井识别与综合评价研究"(2008zx05002-004-003-001)

摘　　要：针对新场气田上沙溪庙组气藏气井压裂施工导致邻井连通逐渐增多的现象,综合分析地应力、压裂缝监测、井区压降变化、井间连通时间及气井间的方位关系等资料,得出压裂缝发育是压裂导致井间连通的主要原因。总结了气井压裂导致邻井出砂堵塞气井的机理。在此基础上提出防止井间压裂连通的3个措施:部署加密调整井时要充分考虑气藏的地应力方向和裂缝发育方向;优化射孔、压裂工艺技术;压裂施工时,邻井采取关井恢复压力措施。Interwell communication is increasingly seen in the upper Shaximiao gas reservoir of the Xinchang gas field due to fracturing operation.This paper comprehensively analyzes earth stress,fracturing fracture monitoring,pressure drop in well block,time of interwell communication,and interwell azimuth relationship,generalizes that fracturing fracture development is the main reason for interwell communication.Gas well fracturing can lead to sand production and plugging in adjoining gas wells.On this basis,three preventive measures of interwell fracturing communication are proposed: the orientation of earth stress and fracture development shall be fully considered when placing infill wells in a gas reservoir;the technology of perforation and fracturing shall be optimized;and the adjoining wells shall be shut in to build up pressure when performing fracturing operation.

关 键 词：井间连通 压裂缝 地应力 出砂机理 新场气田 上沙溪庙组气藏 

分 类 号：TE357.1[石油与天然气工程—油气田开发工程] TE37