新疆阜康白杨河矿区煤层气井排采产水特征研究
|
摘要
为了研究新疆白杨河矿区煤层气生产井排采产水对产气效果的影响,开展了煤层气井排采过程中的产水特征研究。分析了煤层气井在低产水和高产水两种产水模式下煤层气排采过程中的压力传播边界、及其对煤层气井产气的影响。分析结果表明:阜康白杨河矿区中、西部高产水煤层井储层压降在近井地带迅速消耗,难以形成持续有效扩展的降压漏斗,产量在达到一个高峰后快速降低,不利于高产、稳产。示范区东部低产水煤层井排采过程产气持续稳定,部分井产气量很高,说明白杨河矿区低产水有利于降压漏斗的持续扩展。
In order to study the effect of water production from CBM wells in Baiyanghe Mining Area of Xinjiang on the effect of gas production, the characteristics of water production in the CBM well drainage process are studied. The pressure propagation boundary of CBM in the process of CBM drainage and its influence on gas production in CBM wells are analyzed under two water production modes of low production and high production. The analysis results show that the reservoir pressure drop of wells in the west with high water production in Baiyanghe Mining Area of Fukang is rapidly consumed in the near-wellbore area, and it is difficult to form a pressure-relief funnel that is continuously and effectively expanded. The output rapidly decreases after reaching a peak, which is not conducive to high-yield and stable production. The gas production in the wells in the eastern part of the demonstration area with low water production continues to be stable, and the gas production in some wells is high, indicating that the low-yield water in Baiyanghe Mining Area is conducive to the continuous expansion of the buckling funnel.
In order to study the effect of water production from CBM wells in Baiyanghe Mining Area of Xinjiang on the effect of gas production, the characteristics of water production in the CBM well drainage process are studied. The pressure propagation boundary of CBM in the process of CBM drainage and its influence on gas production in CBM wells are analyzed under two water production modes of low production and high production. The analysis results show that the reservoir pressure drop of wells in the west with high water production in Baiyanghe Mining Area of Fukang is rapidly consumed in the near-wellbore area, and it is difficult to form a pressure-relief funnel that is continuously and effectively expanded. The output rapidly decreases after reaching a peak, which is not conducive to high-yield and stable production. The gas production in the wells in the eastern part of the demonstration area with low water production continues to be stable, and the gas production in some wells is high, indicating that the low-yield water in Baiyanghe Mining Area is conducive to the continuous expansion of the buckling funnel.
引文
[1] 支东明,薛冽,王屿涛,等.准噶尔盆地煤层气资源及勘探潜力[M].北京:石油工业出版社,2013.
[2] 赵庆波,张公明.煤层气评价重要参数及评价[J].石油勘探与开发,1999,26(2):23-26.
[3] 徐进,敬益武.准南煤田白杨河—四工河普查区构造特征分析[J].中国煤田地质,2001,13(4):10-11,63.
[4] 吴俊军,游利萍,杨和山.准噶尔盆地阜康断裂带构造演化与油气成藏[J].新疆石油地质,2013,34(1):36-40.
[5] 魏东涛,贾东,赵应成,等.博格达山北麓新生代前陆冲断带构造解析[J].天然气工业,2005,25(SB):83-87.
[6] 周继兵,曾宪军,樊涛.新疆准南煤田阜康一带煤炭资源分布区地质特征[J].新疆地质,2005,23(2):146-151.
[7] 李相方,石军太,杜希瑶,等.煤层气藏开发降压解吸气运移机理[J].石油勘探与开发,2012,39(2):203-213.
[8] 赵金,张遂安.煤层气排采储层压降传播规律研究[J].煤炭科学技术,2012,40(10):65-68.
[9] 刘世奇,桑树勋,李梦溪,等.樊庄区块煤层气井产能差异的关键地质影响因素及其控制机理[J].煤炭学报,2013,38(2):276-283.
[10] 刘新福,綦耀光,胡爱梅,等.单相水流动煤层气井流入动态分析[J].岩石力学与工程学报,2011,30(5):960-966.
[11] 倪小明,王延斌,张崇崇,等.煤层气产出过程渗透率变化与排采控制[M].北京:化学工业出版社,2015:95-96.
[2] 赵庆波,张公明.煤层气评价重要参数及评价[J].石油勘探与开发,1999,26(2):23-26.
[3] 徐进,敬益武.准南煤田白杨河—四工河普查区构造特征分析[J].中国煤田地质,2001,13(4):10-11,63.
[4] 吴俊军,游利萍,杨和山.准噶尔盆地阜康断裂带构造演化与油气成藏[J].新疆石油地质,2013,34(1):36-40.
[5] 魏东涛,贾东,赵应成,等.博格达山北麓新生代前陆冲断带构造解析[J].天然气工业,2005,25(SB):83-87.
[6] 周继兵,曾宪军,樊涛.新疆准南煤田阜康一带煤炭资源分布区地质特征[J].新疆地质,2005,23(2):146-151.
[7] 李相方,石军太,杜希瑶,等.煤层气藏开发降压解吸气运移机理[J].石油勘探与开发,2012,39(2):203-213.
[8] 赵金,张遂安.煤层气排采储层压降传播规律研究[J].煤炭科学技术,2012,40(10):65-68.
[9] 刘世奇,桑树勋,李梦溪,等.樊庄区块煤层气井产能差异的关键地质影响因素及其控制机理[J].煤炭学报,2013,38(2):276-283.
[10] 刘新福,綦耀光,胡爱梅,等.单相水流动煤层气井流入动态分析[J].岩石力学与工程学报,2011,30(5):960-966.
[11] 倪小明,王延斌,张崇崇,等.煤层气产出过程渗透率变化与排采控制[M].北京:化学工业出版社,2015:95-96.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |