Accumulation characteristics and exploration directions of coal-measure gas in the marine-continental transitional facies of the Kaiping Syncline

doi:10.3969/j.issn.1006-6535.2025.03.003

Abstract

Abstract: The Kaiping Syncline is one of the potential blocks with the most exploration value of coal-measure unconventional natural gas in Hebei Province, but the lack of systematic research on the accumulation geological conditions and the accumulation mode of the Kaiping Syncline restricts the exploration and development process of coal-measure gas in this area. In this regard, through the analysis of test data and the combination of the "three histories (burial history, thermal history, and organic matter maturation history)" simulation and other means, the geological conditions, evolutionary process and mode of accumulation in this area were comprehensively analyzed, and the favorable exploration direction of this area was also analyzed. The results show that The study area has the geological conditions for coal-measure gas accumulation; the Early Triassic and Middle Jurassic-Late Cretaceous are the periods of all-round and efficient accumulation for coal-measure gas; the study area is predominantly characterized by the northwest-wing structural-lithological-hydrological sealing gas accumulation mode, the core lithological sealing gas accumulation mode, and the southeast-wing stratigraphic-lithological sealing gas accumulation mode; and the northwestern wing of Kaiping Syncline is the most favorable area for the next step of exploration and development. The study results are of some significance for the subsequent exploration and development of coal-measure gas in the Kaiping Syncline.

Key words: coal-measure gas, geology of accumulation, evolution of accumulation, accumulation mode, marine-continental transitional facies, Kaiping Syncline

CLC Number:

TE122

LI Peng, LI Zheng, ZHANG Aiyin, ZHANG Jianya. Accumulation characteristics and exploration directions of coal-measure gas in the marine-continental transitional facies of the Kaiping Syncline[J]. Special Oil & Gas Reservoirs, 2025, 32(3): 16-25.

References

[1] 沈霞,公海涛,邵明礼,等.松辽盆地南部王府断陷深部煤层气地质特征及有利区评价[J].煤田地质与勘探,2024,52(2):113-121.
SHEN Xia,GONG Haitao,SHAO Mingli,et al.Geological characteristics and favorable area evaluation of deep coalbed methane in Wangfu Fault Depression,southern Songliao Basin[J].Coal Geology & Exploration,2024,52(2):113-121.
[2] 李国永,姚艳斌,王辉,等.鄂尔多斯盆地神木—佳县区块深部煤层气地质特征及勘探开发潜力[J].煤田地质与勘探,2024,52(2):70-80.
LI Guoyong,YAO Yanbin,WANG Hui,et al.Deep coalbed methane resources in the Shenmu-Jiaxian Block,Ordos Basin,China:geological characteristics and potential for exploration and exploitation[J].Coal Geology & Exploration,2024,52(2):70-80.
[3] 郭广山,徐凤银,刘丽芳,等.鄂尔多斯盆地府谷地区深部煤层气富集成藏规律及有利区评价[J].煤田地质与勘探,2024,52(2):81-91.
GUO Guangshan,XU Fengyin,LIU Lifang,et al.Enrichment and accumulation patterns and favorable area evaluation of deep coalbed methane in the Fugu Area,Ordos Basin[J].Coal Geology & Exploration,2024,52(2):81-91.
[4] 林海涛,李玲,唐淑玲,等.二连盆地富气凹陷低阶煤煤层气成因及成藏机制[J].煤田地质与勘探,2024,52(2):60-69.
LIN Haitao,LI Ling,TANG Shuling,et al.Origin and accumulation mechanisms of coalbed methane in low-rank coals in gas-rich sags in the Erlian Basin[J].Coal Geology & Exploration,2024,52(2):60-69.
[5] 徐凤银,王成旺,熊先钺,等.鄂尔多斯盆地东缘深部煤层气成藏演化规律与勘探开发实践[J].石油学报,2023,44(11):1764-1780.
XU Fengyin,WANG Chengwang,XIONG Xianyue,et al.Evolution law of deep coalbed methane reservoir formation and exploration and development practice in the eastern margin of Ordos Basin[J].Acta Petrolei Sinica,2023,44(11):1764-1780.
[6] 徐凤银,王成旺,熊先钺,等.深部(层)煤层气成藏模式与关键技术对策——以鄂尔多斯盆地东缘为例[J].中国海上油气,2022,34(4):30-42.
XU Fengyin,WANG Chengwang,XIONG Xianyue,et al.Deep(layer)coalbed methane reservoir forming modes and key technical countermeasures:taking the eastern margin of Ordos Basin as an example[J].China Offshore Oil and Gas,2022,34(4):30-42.
[7] 张吉振,韩登林,林伟,等.松辽盆地白垩系嫩江组煤系页岩孔隙结构及分形特征[J].天然气地球科学,2024,35(1):119-132.
ZHANG Jizhen,HAN Denglin,LIN Wei,et al.Pore structure and fractal characteristics of coal-bearing Cretaceous Nenjiang shales from Songliao Basin,northeast China[J].Natural Gas Geoscience,2024,35(1):119-132.
[8] 张金晴,李贤庆,张博翔,等.沁水盆地武乡区块上古生界煤系页岩气储层孔隙特征和孔隙结构[J].现代地质,2022,36(6):1551-1562.
ZHANG Jinqing,LI Xianqing,ZHANG Boxiang,et al.Pore characteristics and pore structure of the Upper Paleozoic coal-bearing shale gas reservoir in the Wuxiang Block,Qinshui Basin[J].Geoscience,2022,36(6):1551-1562.
[9] 陈晨.鄂尔多斯盆地东南部山西组煤系页岩气储层特征研究[D].西安:西安石油大学,2022.
CHEN Chen.Study on the characteristics of coal-bearing shale gas reservoirs in the Shanxi Formation,southeastern Ordos Basin[D].Xi′an:Xi′an Shiyou University,2022.
[10] 贾立龙,舒建生,姜在炳,等.黔西海陆过渡相煤系页岩气成藏条件及储层特征研究[J].煤炭科学技术,2021,49(10):201-207.
JIA Lilong,SHU Jiansheng,JIANG Zaibing,et al.Study on formation conditions and reservoir characteristics of marine-terrigenous facies coal measures shale gas in western Guizhou[J].Coal Science and Technology,2021,49(10):201-207.
[11] 张敏,李贤庆,张吉振,等.新疆阜康地区八道湾组页岩气成藏条件[J].煤田地质与勘探,2019,47(2):103-110.
ZHANG Min,LI Xianqing,ZHANG Jizhen,et al.Reservoir-forming conditions of shale gas in Badaowan Formation in Fukang Area,Xinjiang[J].Coal Geology & Exploration,2019,47(2):103-110.
[12] 钟秋,傅雪海,张苗,等.沁水煤田石炭系—二叠系煤系地层页岩气开发潜力评价[J].天然气地球科学,2020,31(1):110-121.
ZHONG Qiu,FU Xuehai,ZHANG Miao,et al.Development potential of Carboniferous-Permian coal measures shales gas in Qinshui Coalfield[J].Natural Gas Geoscience,2020,31(1):110-121.
[13] 李勇,陈世加,路俊刚,等.近源间互式煤系致密砂岩气成藏主控因素——以川中地区须家河组天然气为例[J].天然气地球科学,2019,30(6):798-808.
LI Yong,CHEN Shijia,LU Jungang,et al.Main controlling factors of near-source and interbedded-accumulation tight sandstone gas from coal-bearing strata:a case study from natural gas of Xujiahe Formation,central Sichuan Basin[J].Natural Gas Geoscience,2019,30(6):798-808.
[14] 刘玲.鄂尔多斯盆地临兴地区煤系致密砂岩气成藏规律研究[D].北京:中国地质大学(北京),2023.
LIU Ling.Research on the accumulation patterns of coal-measure tight sandstone gas in the Linxing Block of the Ordos Basin[D].Beijing:China University of Geosciences(Beijing),2023.
[15] 谢英刚,秦勇,叶建平,等.临兴地区上古生界煤系致密砂岩气成藏条件分析[J].煤炭学报,2016,41(1):181-191.
XIE Yinggang,QIN Yong,YE Jianping,et al.Accumulation conditions of tight gas in the Upper Paleozoic of Linxing Block[J].Journal of China Coal Society,2016,41(1):181-191.
[16] 吴晓智,赵玉梅,王社教,等.准噶尔盆地侏罗系煤系地层致密砂岩气资源潜力分析[J].天然气地球科学,2016,27(9):1679-1687.
WU Xiaozhi,ZHAO Yumei,WANG Shejiao,et al.Analysis on the resource potential of tight sandstone gas of Jurassic coal measure in Junggar Basin,China[J].Natural Gas Geoscience,2016,27(9):1679-1687.
[17] 赵利芳,张洲,杨瑾.鹤岗盆地煤层气与致密砂岩气共探潜力评价[J].煤矿安全,2020,51(12):198-202.
ZHAO Lifang,ZHANG Zhou,YANG Jin.Evaluation of co-exploration potential of coalbed methane and tight sandstone gas in Hegang Basin[J].Safety in Coal Mines,2020,51(12):198-202.
[18] 秦勇.煤系气地质调查若干问题思考与探讨[J].中国地质,2023,50(5):1355-1374.
QIN Yong.Thinking and discussion for some problems of geological survey of coal measures gas[J].Geology in China,2023,50(5):1355-1374.
[19] 蔡益栋,高国森,刘大锰,等.鄂尔多斯盆地东缘临兴中区煤系气富集地质条件及成藏模式[J].天然气工业,2022,42(11):25-36.
CAI Yidong,GAO Guosen,LIU Dameng,et al.Geological conditions for coal measure gas enrichment and accumulation models in Linxingzhong Block along the eastern margin of the Ordos Basin[J].Natural Gas Industry,2022,42(11):25-36.
[20] 代旭光,王猛,黄凯,等.开平煤田煤层气成藏类型研究[J].煤炭工程,2017,49(4):117-120,124.
DAI Xuguang,WANG Meng,HUANG Kai,et al.CBM pool formation types of Kaiping Coalfield[J].Coal Engineering,2017,49(4):117-120,124.
[21] 罗跃,朱炎铭,钟和清,等.开平煤田煤层气富集成藏及其控制因素[J].煤炭科学技术,2012,40(6):100-103.
LUO Yue,ZHU Yanming,ZHONG Heqing,et al.Enrichment deposit and control factors of coal bed methane in Kaiping Coalfield[J].Coal Science and Technology,2012,40(6):100-103.
[22] 李绪慧.河北省开平向斜页岩气地球化学特征及生烃潜力评价[J].中国煤层气,2023,20(4):44-47.
LI Xuhui.Geochemical characteristics and hydrocarbon generation potential evaluation of shale gas in Kaiping Syncline of Hebei Province[J].China Coalbed Methane,2023,20(4):44-47.
[23] 刘义生,赵少磊.开平向斜地质构造特征及其对瓦斯赋存的控制[J].煤炭学报,2015,40(增刊1):164-169.
LIU Yisheng,ZHAO Shaolei.Geological structural characteristics and their control action on gas occurrence in Kaiping Syncline[J].Journal of China Coal Society,2015,40(S1):164-169.
[24] 闫高原.沁水盆地榆社东煤系气复合成藏过程研究[D].北京:中国矿业大学,2018.
YAN Gaoyuan.Study on the composite accumulation process of coal-measure gas in the eastern Yushe Area of the Qinshui Basin[D].Beijing:China University of Mining & Technology,2018.
[25] 陈崇域.山西榆社—武乡区块太原组“三气”储层特征与叠置成藏研究[D].北京:中国矿业大学,2019.
CHEN Chongyu.Characteristics of "Three-gas" reservoirs and overlapping gas accumulation in the Taiyuan Formation of the Yushe-Wuxiang Block in Shanxi[D].Beijing:China University of Mining & Technology,2019.