延川南煤层气田基本特征与成藏关键因素

郭伟

doi:10.11781/sysydz201503341

延川南煤层气田基本特征与成藏关键因素

doi: 10.11781/sysydz201503341

郭伟

中国石化华东分公司石油勘探开发研究院, 南京 210011

基金项目: 国家科技重大专项(2011ZX05035)06课题资助.

详细信息

作者简介:
郭伟(1988-),女,助理工程师,从事煤层气勘探开发研究.E-mail:245366548@qq.com.

中图分类号: TE132.2
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- 被引次数: 0
出版历程
- 收稿日期: 2015-01-03
- 修回日期: 2015-04-24
- 刊出日期: 2015-05-28

Basic characteristics and key factors of gas accumulation in Yanchuannan coalbed gas field

Guo Wei

Petroleum Exploration and Development Institute, SINOPEC East China Branch Company, Nanjing, Jiangsu 210011, China

摘要

摘要: 以延川南煤层气田山西组2号煤层为例,分析了该气田的基本特征。该气田具有构造简单,厚度稳定,低孔、低渗,低压力梯度,生烃潜力大,含气量高,演化程度高等特点。通过研究区断层与含气量、地层水、地层压力梯度的关系,局部构造与割理发育、煤层气产量的关系,以及对煤层气甲烷碳同位素特征的分析,认为:(1)断层对煤层气的富集作用明显,断裂带煤层含气量明显变低;(2)中部断裂带控制了煤层的压力梯度和地层水的分布;(3)煤层气具有混合气(自源和运移来的热成因气)的特征,有一定构造幅度的正向构造,有助于煤层气的富集。
- 断层 /
- 煤层气 /
- 2号煤层 /
- 山西组 /
- 延川南
Abstract: The basic characteristics of the Yanchuannan coalbed gas field were analyzed in a case study of the No.2 coalbed in the Shanxi Formation. The gas field is featured by simple structure, stable thickness, low porosity, low permeability, low pressure gradient, high hydrocarbon potential, high gas content, and high thermal maturity. The relationships between faults and gas content, formation water, formation pressure gradient, the relationships between local structure and cleat development, coalbed gas content, and the characteristics of methane carbon isotopes were studied. Conclusions were drawn as follows. (1) Faults significantly controlled the enrichment of coalbed gas. Coalbed gas content decreased in fracture belts. (2) The central fault belt controlled the pressure gradient of coalbed and the distribution of formation water. (3) The coalbed gas was mixed self-sourced gas and thermogenic gas. Positive structure with certain amplitude is helpful for the enrichment of coalbed gas.
- fault /
- coalbed gas /
- No.2 coalbed /
- Shanxi Formation /
- Yanchuannan

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参考文献(16)

[1]	张英,何瑞清,彭兴平.延川南煤层气日产量超10万立方米[OL].中国石化新闻网.[2014-09-01] http://www.sinopecnews.com.cn/. Zhang Ying,He Riuqing,Peng Xingping.The daily gas production of Yanchuannan CBM over 100 000 cubic meters[OL].Sino-pec News Com[2014-09-01]. http://www.sinopecnews.com.cn/.
[2]	李清.山西延川南煤层气田2号煤层煤相研究:煤层气开发选区意义[J].石油实验地质,2014,36(2):245-248. Li Qing.Coal facies of no.2 coal in Yanchuannan coal field of Shanxi:significance for constituencies of coalbed methane exploitation[J].Petroleum Geology & Experiment,2014,36(2):245-248.
[3]	李贵中,王红岩,吴立新,等.煤层气向斜控气论[J].天然气工业,2005,25(1):26-28. Li Guizhong,Wang Hongyan,Wu Lixin,et al.Theory of syncline-controlled coalbed methane[J].Natural Gas Industry,2005,25(1):26-28.
[4]	王宁,王立志,周芊芊.延川南区块煤层气单井产能影响因素分析[J].油气藏评价与开发,2012,2(5):78-82. Wang Ning,Wang Lizhi,Zhou Qianqian.Influence factors on production of CBM wells in South Yanchuan block[J].Reservoir Evaluation and Development,2012,2(5):78-82.
[5]	禹圣彪,陈磊,范小俊.延川南地区煤层气储层地质特征研究[J].吉林地质,2013,32(2):70-73. Yu Shengbiao,Chen Lei,Fan Xiaojun.Geological features of south Yanchuan coal bed methane reservoir[J].Jilin Geology,2013,32(2):70-73.
[6]	秦勇,唐修义,叶建平,等.中国煤层甲烷稳定碳同位素分布与成因探讨[J].中国矿业大学学报,2000,29(2):113-119. Qin Yong,Tang Xiuyi,Ye Jianping,et al.Characteristics and origins of stable carbon isotope in coalbed methane of China[J].Journal of China University of Mining & Technology,2000,29(2):113-119.
[7]	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. Huang Xiaobo,Zhao Pei,Dong Zeliang,et al.Main controlling factors of CBM reservoiring and its mode in Qinshui Basin[J].Coal Geology of China,2014,26(2):12-17.
[8]	路艳霞,张飞燕,吴英,等.延川南地区煤层气资源潜力分析[J].中国煤层气,2011,8(4):13-17. Lu Yanxia,Zhang Feiyan,Wu Ying,et al.Analysis of potentials of CBM resources in Yanchuannan region[J].China Coalbed Methane,2011,8(4):13-17.
[9]	孙建博,姜呈馥,尹锦涛.鄂尔多斯盆地宜川地区煤层气储层特征及勘探潜力分析[J].中国煤层气,2014,11(5):7-10. Sun Jianbo,Jiang Chengfu,Yin Jintao.Characteristics of CBM reservoirs and exploration potential in Yichuan region of Ordos Basin[J].China Coalbed Methane,2014,11(5):7-10.
[10]	刘洪林,李景明,王红岩,等.水文地质条件对低煤阶煤层气成藏的控制作用[J].天然气工业,2008,28(7):20-22. Liu Honglin,Li Jingming,Wang Hongyan,et al.Control of hydrogeological conditions on accumulation of coalbed methane in low-rank coal[J].Natural Gas Industry,2008,28(7):20-22.
[11]	张井,韩宝平,唐家祥,等.煤及煤层顶底板的孔隙结构特征[J].煤田地质与勘探,1998,26(2):28-31. Zhang Jing,Han Baoping,Tang Jiaxiang,et al.The pore structural characteristics in coals,and roof and floor rocks[J].Coal Geology & Exploration,1998,26(2):28-31.
[12]	陈刚,李五忠.鄂尔多斯盆地深部煤层气吸附能力的影响因素及规律[J].天然气工业,2011,31(10):47-49. Chen Gang,Li Wuzhong.Influencing factors and patterns of CBM adsorption capacity in the deep Ordos Basin[J].Natural Gas Industry,2011,31(10):47-49.
[13]	Ayers W B Jr.Coalbed gas systems,resources,and production and a review of contrasting cases from the San Juan and Powder River basins[J].AAPG Bulletin,2002,86(11):1853-1890.
[14]	郭彤楼,张汉荣.四川盆地焦石坝页岩气田形成与富集高产模式[J].石油勘探与开发,2014,41(1):28-36. Guo Tonglou,Zhang Hanrong.Formation and enrichment mode of Jiaoshiba shale gas field,Sichuan Basin[J].Petroleum Exploration and Development,2014,41(1):28-36.
[15]	Guo Tonglou.The Fuling Shale Gas Field:A highly productive Silurian gas shale with high thermal maturity and complex evolution history,southeastern Sichuan Basin,China[J].Interpretation,2015,3(2):1-10.
[16]	赵少磊,朱炎铭,曹新款,等.地质构造对煤层气井产能的控制机理与规律[J].煤炭科学技术,2012,40(9):108-111,116. Zhao Shaolei,Zhu Yanming,Cao Xinkuan,et al.Control mechanism and law of geological structure affected to production capacity of coal bed methane well[J].Coal Science and Technology,2012,40(9):108-111,116.