摘要
为准确获得吉UX井开采层位水力压裂裂缝的形态及方位,利用地面测斜仪水力压裂裂缝监测技术,对吉UX井9段开采层位进行水力压裂裂缝监测,获得了水力压裂裂缝的形态;利用真三轴水力压裂模拟系统,模拟吉县区块地应力状态,对煤岩进行了水力压裂模拟。监测和实验结果都表明,裂缝扩展以水平缝为主,用水平井在一个小层内压裂,纵向上难以有效沟通多个小层。据此认为,吉县区块采用水平井压裂沟通多个小层的开采方式,具有极大的投资风险。
Accurate understanding of the hydraulic fracture morphology and orientation can be of significance for horizontal well deploy-ment and fracturing design optimization. Nine sections of hydraulic fractures are monitored using tiltmeter, and the morphologies of themare obtained, followed by physical simulating in-situ stress state in this block and hydraulic fractures in CBM using true triaxial hydraulicfracturing simulation system. Monitoring and the experimental results show that the fracture propagation is dominated by horizontal frac-ture. To make hydraulic fracturing within one of the layers by horizontal well process is hard to shape effective connection of the multiplelayers in longitudinal direction. It is concluded that such a process of horizontal well plus hydraulic fracturing to connect multiple layers inJixian block has a great risk of investment.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2016年第2期213-217,共5页
Xinjiang Petroleum Geology
基金
国家油气重大专项(2011ZX05037)
关键词
鄂尔多斯盆地
吉县区块
煤层气
U形井
裂缝监测
水力压裂模拟
Ordos basin
Jixian block
coalbed methane
U-shaped well
hydraulic fracture monitoring
fracturing simulation
