焦坪矿区煤层气井压裂裂缝扩展规律研究
|
摘要
介绍了井温测试、地面微地震法和动态导体充电法监测煤层水力压裂裂缝的基本原理,并通过采用上述3种方法对焦坪矿区煤层气井压裂裂缝进行监测,初步获取了煤层压裂裂缝的形态参数,通过分析发现:焦坪矿区煤层压裂空间展布显现出不等长垂直缝,压裂裂缝上下扩展明显,均穿越了煤层的顶底板,主裂缝延伸方位为北东向,建议生产井在长度方向上延主裂缝方向进行布置,井间距在400m左右为宜,在宽度方向上在140m左右为宜。
The paper introduced a basic principle of the well temperature measurement and test,surface ground micro seismic method and dynamic conductor charging method applied to monitor and measure the cracks developed with the hydraulic fracturing of the seam. With the above three methods applied to monitor and measure the cracks developed with the hydraulic fracturing of the coal bed methane wells in Jiaoping Mining Area,the crack shape parameters of the hydraulic fracturing in the seam were obtained preliminarily. The analysis showed that inequal length vertical cracks displayed and appeared in the fracturing space of the seam in Jiaoping Mining Area. The fractured cracks were expanded upward and downward remarkably,were passed through the seam roof and floor and the expansion direction of the main crack were in North-East. The production wells should be arranged in the length direction along the main cracking direction,the space between the wells would be about 400m suitably and the width direction of the wells would be about 140 suitably.
The paper introduced a basic principle of the well temperature measurement and test,surface ground micro seismic method and dynamic conductor charging method applied to monitor and measure the cracks developed with the hydraulic fracturing of the seam. With the above three methods applied to monitor and measure the cracks developed with the hydraulic fracturing of the coal bed methane wells in Jiaoping Mining Area,the crack shape parameters of the hydraulic fracturing in the seam were obtained preliminarily. The analysis showed that inequal length vertical cracks displayed and appeared in the fracturing space of the seam in Jiaoping Mining Area. The fractured cracks were expanded upward and downward remarkably,were passed through the seam roof and floor and the expansion direction of the main crack were in North-East. The production wells should be arranged in the length direction along the main cracking direction,the space between the wells would be about 400m suitably and the width direction of the wells would be about 140 suitably.
引文
[1]贺天才,秦勇.煤层气勘探与开发利用技术[M].徐州:中国矿业大学出版社,2007.
[2]李雪,赵志红,荣军委.水力压裂裂缝微地震监测测试技术与应用[J].油气井测试,2012,21(3):43-45.
[3]单学军,张士诚,张遂安,等.华北地区煤层气井压裂裂缝监测及其扩展规律[J].煤田地质与勘探,2005,33(5):25-28.
[4]王香增.井—地电位法在煤层气井压裂裂缝监测中的应用[J].煤炭工程,2006(5):36-37.
[5]李玉魁,张遂安.井温测井监测技术在煤层压裂裂缝监测中的应用[J].中国煤层气,2005,2(2):14-16.
[6]汪华君,姜福兴,成云海,等.覆岩导水裂隙带高度的微地震(MS)监测研究[J].煤炭工程,2006(3):74-76.
[7]李景山,刘玉洲,左秋玲.超厚煤层放顶煤开采的岩体破裂监测技术[J].煤炭工程,2007(10):127-129.
[8]张金成,王爱国,王小剑,等.动态法测定煤层气井压裂裂缝方位技术[C]//叶建平,傅小康.2011年煤层气学术研讨会论文集.北京:地质出版社,2011.
[2]李雪,赵志红,荣军委.水力压裂裂缝微地震监测测试技术与应用[J].油气井测试,2012,21(3):43-45.
[3]单学军,张士诚,张遂安,等.华北地区煤层气井压裂裂缝监测及其扩展规律[J].煤田地质与勘探,2005,33(5):25-28.
[4]王香增.井—地电位法在煤层气井压裂裂缝监测中的应用[J].煤炭工程,2006(5):36-37.
[5]李玉魁,张遂安.井温测井监测技术在煤层压裂裂缝监测中的应用[J].中国煤层气,2005,2(2):14-16.
[6]汪华君,姜福兴,成云海,等.覆岩导水裂隙带高度的微地震(MS)监测研究[J].煤炭工程,2006(3):74-76.
[7]李景山,刘玉洲,左秋玲.超厚煤层放顶煤开采的岩体破裂监测技术[J].煤炭工程,2007(10):127-129.
[8]张金成,王爱国,王小剑,等.动态法测定煤层气井压裂裂缝方位技术[C]//叶建平,傅小康.2011年煤层气学术研讨会论文集.北京:地质出版社,2011.