高、低煤阶煤层气藏成藏过程及优势地质模型

新疆石油地质 ›› 2007, Vol. 28 ›› Issue (3): 275-278.

高、低煤阶煤层气藏成藏过程及优势地质模型

陈振宏^1,2, 宋岩²

1.中国科学院广州地球化学研究所, 广州 510640;
2.中国石油石油勘探开发科学研究院, 北京 100083

收稿日期:2006-06-15 修回日期:2006-12-15 出版日期:2007-06-01 发布日期:2020-07-31
作者简介:陈振宏(1979-), 男, 湖南桃源人, 在读博士研究生, 石油地质,(Tel) 010-682098622(E-mail) jimcoco@gig.ac.cn.
基金资助:
国家973项目, 煤层气成藏机制及经济开采基础研究(2002CB211705)资助

Formation Processes and Advantageous Models for High-Low-Rank Coalbed Methane Reservoirs

CHEN Zhen-hong^1,2, SONG Yan²

1. Guangzhou Institute of Geochemistry, CAS, Guangzhou, Guangdong 510640, China;
2. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China

Received:2006-06-15 Revised:2006-12-15 Online:2007-06-01 Published:2020-07-31

摘要/Abstract

摘要： 在构造演化研究的基础上,对比了典型的高、低煤阶煤层气藏的形成过程,探讨了决定现今煤层气藏富集程度的关键因素。高煤阶煤层气藏由于生气量足,成藏过程复杂,通常经历了多次沉降、抬升及改造,到最高演化程度后就不再有煤层气的生成,其形成具有明显的阶段性,故现今煤层气的富集程度主要取决于保存条件;而低煤阶煤层气藏成藏过程简单,煤层形成后一般只经历了一次沉降,一次抬升,受现今地下水的补给、运移、排泄和滞流的控制作用。基于以上认识,分别建立了封闭系统高煤阶煤层气藏优势地质模型和盆缘缓坡低煤阶煤层气藏优势地质模型。

关键词: 煤层气, 成藏, 构造演化, 对比, 模型

Abstract: The typical formation processes of high-low rank coalbed methane (CBM) reservoirs are presented based on tectonic evolution extents. The key factors controlling current accumulation and enrichment of CBM reservoirs are discussed. The study shows that the high rank CBM reservoir is of obvious episode for it normally undergoes multiple subsidence, uplift and modification with sufficient CBM and complex forming process; the CBM is not generated till reaching its highest evolution. So its current accumulation and enrichment mainly depend on conservation conditions. The formation process of low rank CBM reservoir is often simple, just undergoing single subsidence, single uplift and gentle modification, and controlled by underwater supply, migration, drainage and detention. According to these understandings, the advantageous model of high rank CBM reservoirs with closed system and the advantageous model of low rank CBM reservoir with basinal margin or gentle slope area are developed.

Key words: coalbed methane (CBM), reservoir, tectonic evolution, contrast, model

中图分类号:

TE122.2

陈振宏, 宋岩. 高、低煤阶煤层气藏成藏过程及优势地质模型[J]. 新疆石油地质, 2007, 28(3): 275-278.

CHEN Zhen-hong, SONG Yan. Formation Processes and Advantageous Models for High-Low-Rank Coalbed Methane Reservoirs[J]. Xinjiang Petroleum Geology, 2007, 28(3): 275-278.

参考文献

[1] Bush A, Gensterblum Y, Kcross BM. Methane and CO₂ sorptionand desorption measurement on dry Aargone premium coals: pure component andmixture[J]. Int J Coal Geol., 2003,55: 206-244.
[2] 宋岩, 张新民, 柳少波. 中国煤层气基础研究和勘探开发技术新进展[J]. 天然气工业, 2005, 25(1): 1-7.
[3] 李明潮, 梁生正, 赵克镜. 煤层气勘探与开发[M]. 北京:地质出版社, 1996.
[4] 钱凯, 赵庆波, 汪泽成. 煤层甲烷勘探开发理论与实验测试技术[M]. 北京: 石油工业出版社, 1997.
[5] 张新民, 庄军, 张遂安, 等. 中国煤层气地质与资源评价[M]. 北京: 科学出版社, 2002.
[6] 宋岩, 柳少波, 洪峰. 煤层气成藏地质条件及气藏类型[A] //煤层气成藏机制及经济开采理论基础[C]. 北京:科学出版社, 2005.
[7] Pashin J C, Chandler R V, Mink R M. Geologic controls on occurrence and producibility of coalbed methane, Oak Grovefield, black warrior basin, Alabama[A] //Proceedings: international coalbed methane symposium[C] 1989: 203-209.
[8] 张建博, 王红岩, 赵庆波. 中国煤层气地质[M]. 北京: 地质出版社, 2000.
[9] 胡国艺, 刘顺生, 李景明, 等. 沁水盆地晋城地区煤层气成因[J]. 石油与天然气地质, 2001, 22(4): 319-321.
[10] 张建博, 陶明信. 煤层甲烷碳同位素在煤层气勘探中的地质意义: 以沁水盆地为例[J]. 沉积学报, 2000, 18(4): 611-614.
[11] 魏书宏, 韩少明. 沁水煤田南部煤层气构造控气特征研究[J]. 煤田地质与勘探. 2003, 31(3): 30-31.
[12] 桑树勋, 刘焕杰, 李贵中, 等. 煤层气生成与煤层气富集I: 有效阶段生气量与煤层气富集[J]. 煤田地质与勘探,1997, 25(6) 14-17.
[13] 赵孟军, 宋岩, 苏现波, 等. 决定煤层气地球化学特征的关键地质时期[J]. 天然气工业, 2005, 25(1): 51-54.
[14] 陈刚. 沁水盆地燕山期构造热事件及其油气地质意义[J]. 西北地质科学, 1997, 18(2): 63-67.
[15] 张群, 李建武, 张新民, 等. 高煤级煤的煤层气开发潜力-以沁水煤田为例[J]. 煤田地质与勘探, 2001, 29(6): 26-30.
[16] Ayers WB 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, 11: 1 853-1 890.
[17] Rice D D, R MFlores. Controls of bacterial gas accumulations in thick Tertiary coal beds and adjacent channel sand stones,Powder River basin, Wyoming and Montana(abs)[J]. AAPG Bulletin, 1991, 75: 661.
[18] 李明潮, 王绳祖, 雷崇利, 等. 阜新盆地王营水动力圈闭裂隙型气藏的形成机制[J]. 天然气工业, 1999, 19(5): 17-21.
[19] 孟庆山. 阜新盆地王营矿气藏成因分析[J]. 中国煤田地质, 2003, 15(6): 24-26.
[20] 苏现波, 陈江峰, 孙俊民, 等. 煤层气地质学与勘探开发[M]. 北京: 科学出版社, 2001.
[21] 李明诚. 石油与天然气运移[M]. 北京: 石油工业出版社,1987.