樊庄区块井网调整技术研究与应用
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摘要
樊庄区块经历了十多年的煤层气开发,目前区块处于开发调整阶段。本次主要对煤层气田开发后期调整技术的方法与效果进行探讨。首先明确了区块内煤层气井在井网调整前的存在的开发问题,通过分析直井压降扩展模型,确定了剩余资源分布情况;再通过数值模拟与生产实践,明确了渗透率与井距对采收率的影响,制定了调整井井距的确定方法,通过井网调整后,取得了较好的开发效果。樊庄区块开发调整技术的方法及成效,对我国其它区块煤层气田的后期开发调整具有借鉴意义。
Fanzhuang Block has experienced more than ten years of CBM development, and the block is currently in the development and adjustment stage. The paper mainly discusses the methods and effects of the later adjustment technology of CBM fields. Firstly, the development problem of the existence of CBM wells in the block before the adjustment of the well pattern is clarified. By analyzing the vertical well pressure drop expansion model, the distribution of remaining resources is determined. Through the numerical simulation and production practice, the influence of permeability and well spacing on recovery factor is clarified, and the method for determining the well spacing is established. After the well network adjustment, a good result for development could be obtained. The methods and effects of the development and adjustment technology in Fanzhuang Block have reference significance for the later development and adjustment of CBM fields in other blocks in China.
Fanzhuang Block has experienced more than ten years of CBM development, and the block is currently in the development and adjustment stage. The paper mainly discusses the methods and effects of the later adjustment technology of CBM fields. Firstly, the development problem of the existence of CBM wells in the block before the adjustment of the well pattern is clarified. By analyzing the vertical well pressure drop expansion model, the distribution of remaining resources is determined. Through the numerical simulation and production practice, the influence of permeability and well spacing on recovery factor is clarified, and the method for determining the well spacing is established. After the well network adjustment, a good result for development could be obtained. The methods and effects of the development and adjustment technology in Fanzhuang Block have reference significance for the later development and adjustment of CBM fields in other blocks in China.
引文
[1] 徐兵祥,李相方,任维娜,等.基于均衡降压理念的煤层气井网井距优化模型[J].中国矿业大学学报,2014,43(1):88-92.
[2] 刘世奇,桑树勋,李梦溪,等.沁水盆地南部煤层气井网排采压降漏斗的控制因素[J].中国矿业大学学报,2012,41(6):943-950.
[3] 刘燕红,李梦溪,杨鑫,等.沁水盆地樊庄区块煤层气高产富集规律及开发实践[J].地质勘探,2012,32(4):29-32.
[4] 吴定泉,张建国,闫玲,等.樊庄-郑庄区块断层规模对煤层气开发的影响研究[J].中国煤层气,2016,13(3):18-21.
[5] 黄孝波,赵佩,董泽亮,等.沁水盆地煤层气成藏主控因素与成藏模式分析[J].中国煤炭地质,2014,26(2):12-17.
[2] 刘世奇,桑树勋,李梦溪,等.沁水盆地南部煤层气井网排采压降漏斗的控制因素[J].中国矿业大学学报,2012,41(6):943-950.
[3] 刘燕红,李梦溪,杨鑫,等.沁水盆地樊庄区块煤层气高产富集规律及开发实践[J].地质勘探,2012,32(4):29-32.
[4] 吴定泉,张建国,闫玲,等.樊庄-郑庄区块断层规模对煤层气开发的影响研究[J].中国煤层气,2016,13(3):18-21.
[5] 黄孝波,赵佩,董泽亮,等.沁水盆地煤层气成藏主控因素与成藏模式分析[J].中国煤炭地质,2014,26(2):12-17.