摘要
随着页岩气开发不断深入,水平井实施压裂过程中邻井的干扰现象日益增多,对气田的产量、套管的安全、气井的管柱造成较大影响,有待明确压裂井间干扰的影响因素及降低干扰的治理对策。采用井下压力监测的方式证实压裂井间干扰的矿场表现,通过生产动态跟踪分析及微地震监测结果基本明确井网井距、压裂改造强度、天然裂缝是影响压裂水平井井间干扰的主要因素。对降低压裂干扰提出了压裂设计源头优化、采气井现场管理、生产运行调整3种治理对策,在现场应用中获得了较好的效果。
With the continuous development of shale gas,the interference of adjacent wells is increasing during the fracturing of horizontal wells,which has a great impact on the production of gas fields,the safety of casings,and the string of gas wells.The influencing factors of the interference between fracturing wells and the countermeasures to reduce the interference need to be clarified.The field performance of fracturing interwell interference is confirmed by downhole pressure monitoring.Through production dynamic tracking analysis and microseismic monitoring results,it is basically clear that well spacing,fracturing transformation intensity,and natural fractures are the main factors affecting the interference between horizontal wells during fracturing.Three governance strategies have been proposed to reduce fracturing interference,including optimization of fracturing design source,on-site management of gas production wells,and production operation adjustment.These measures have achieved good improvement effects in on-site applications.
作者
卢比
胡春锋
马军
LU Bi;HU Chunfeng;MA Jun(Sinopec Chongqing Shale Gas Co.,Ltd.,Chongqing 408400,China)
出处
《油气藏评价与开发》
CSCD
2023年第3期330-339,共10页
Petroleum Reservoir Evaluation and Development
基金
中国石化科技开发部项目“四川盆地及周缘常压页岩气勘探开发关键技术研究”(P21087-4)。
关键词
页岩气
矿场试验
井间干扰
治理对策
shale gas
field test
interwell interference
governance countermeasures
