| 75 | 0 | 2 |
| 下载次数 | 被引频次 | 阅读次数 |
新疆地区煤层气资源量丰富，2 000 m深以浅煤层气资源量高达7.51×1012 m3,约占中国煤层气资源总量的25.0%。为了进一步明确该区煤层气资源的地质特征及富集规律，以准噶尔盆地南缘硫磺沟区块中—低阶煤层为研究对象，从含气量和产能的主控要素入手，探究新疆地区中—低阶煤层气的富集特征，明确勘探思路。研究发现，在以中—低阶煤层为主的浅层勘探区域，构造复杂，煤层厚度大，目的层段煤层单层厚度大于10 m,平均孔隙度为7.3%～9.2%,平均渗透率为(2.4～2.64)×10-3μm2,含气量差异较大(0.02～10 m3/t);目的层以生物成因煤层气为主，埋深较浅，水动力强，含气量低，导致勘探开发效果不理想。研究后认为，新疆地区中—低阶煤层气的勘探要充分结合煤层气的成因类型、构造、水文地质及埋深条件，以含气量为主要参考指标，选择构造相对较稳定、位于弱径流-滞留区并且煤层气成因为混合成因、热成因的区域，是勘探取得成效的关键。
Abstract：The shallow coalbed methane resources above 2 000 m in Xinjiang reach 7.51×1012m3, accounting for approximately 25.0% of the total coalbed methane resources in the China.In order to further clarify the geological characteristics and enrichment rules of coalbed methane resources in this area, taking the mid-to-low-rank coal seams in the Liuhuanggou block on the southern margin of the Junggar Basin as the research object, a comprehensive geological analysis of preliminary exploration data was carried out to further deepen the mid-to-low-rank coal seams in Xinjiang. The enrichment characteristics of coalbed methane clarify exploration ideas.This study has obtained the following three understandings and achievements: In the shallow exploration area dominated by medium-low rank coal seams, the structure is complex and the coal seam thickness is large. The single layer thickness of the coal seam in the target interval is greater than 10 m, the average porosity is 7.3 ～ 9.2%, and the average permeability is 2.4 ～ 2.64 mD. The gas content is quite different, ranging from 0.02 to 10.00 m3/t. The target layer is mainly biogenic coalbed methane, with shallow buried depth, strong hydrodynamic action, low gas content, as a result of unsatisfactory exploration and development. In the next step, the exploration of medium-low-rank coalbed methane in Xinjiang should fully combine the genetic type, structure, hydrogeology and burial depth conditions of coalbed methane, take gas content as the main reference index, and select relatively stable structures located in weak runoff-retention areas and areas with mixed and thermal origin of coalbed methane are the key to achieving commercial results.
[1] 李瑞明，周梓欣.新疆煤层气产业发展现状与思考[J].煤田地质与勘探，2022,50(3):2329.LI R M,ZHOU Z X.Development status and thoughts on coalbed methane industry in Xinjiang[J].Coal Geology & Exploration,2022,50(3):2329.
[2] 郑司建，桑树勋.煤层气勘探开发研究进展与发展趋势[J].石油物探，2022,61(6):951-962.ZHENG S J,SHANG S X.Progress of research on coalbed methane exploration and development[J].Geophysical Prospecting for Peroleum,2022,61(6):951-962.
[3] 朱庆忠，杨延辉，左银卿，等.中国煤层气开发存在的问题及破解思路[J].天然气工业，2018,38(4):96-100.ZHU Q Z,YANG Y H,ZUO Y Q,et al.CBM development in China:Challenges and solutions[J].Natural Gas Industry,2018,38(4):96-100.
[4] 毕彩芹，单衍胜，朱韩友，等.四川南部地区川高参1井获煤层气高产工业气流[J].中国地质，2018,45(5):1076-1077.BI C Q,SHAN Y S,ZHU H Y,et al.Industrial gas production of CBM obtained by Well CGC 1 in southern Sichuan[J].Geology in China,2018,45(5):1076-1077.
[5] 桑树勋，韩思杰，刘世奇，等.高煤阶煤层气富集机理的深化研究[J].煤炭学报，2021,47(1):388-403.SANG S X,HAN S J,LIU S Q,et al.Comprehensive insight into the enrichment mechanism of coalbed methane in high rank coal reservoirs[J].Journal of China Coal Society,2021,47(1):388-403.
[6] 涂志民，车延前，李鹏，等.新疆后峡盆地中—低阶煤煤层气成藏模式[J].煤田地质与勘探，2022,50(5):43-49.TU Z M,CHE Y Q,LI P,et al.Accumulation mode of middle-low rank coalbed methane in Houxia Basin,Xinjiang[J].Coal Geology & Exploration,2022,50(5):43-49.
[7] 汤达祯，杨曙光，唐淑玲，等.准噶尔盆地煤层气勘探开发与地质研究进展[J].煤炭学报，2021,46(8):2412-2425.TANG D Z,YANG S G,TANG S L,et al.Advance on exploration-development and geological research of coalbed methane in the Junggar Basin[J].Journal of China Coal Society,2021,46(8):2412-2425.
[8] 涂志民，王兴刚，车延前，等.三塘湖盆地低阶煤煤层气成藏主控因素[J].新疆石油地质，2021,42(6):683-689.TU Z M,WANG X G,CHE Y Q,et al.Controlling factors on CBM accumulation in low-rank coal in Santanghu Basin[J].Xinjiang Petroleum Geology,2021,42(6):683-689.
[9] 杨曙光，伏海蛟，王刚.准南地区煤层气选区评价体系及有利区预测[J].新疆地质，2021,39(2):292-296.YANG S G,FU H J,WANG G.Evaluation system and prediction of coalbed methane exploration targets in the Southern Junggar Basin[J].Xinjiang Geology,2021,39(2):292-296.
[10] 李跃国，姚程鹏，杨曙光，等.准南米泉地区煤层气成因及其富集成藏机理研究[J].煤炭科学技术，2021,49(4):220-226.LI Y G,YAO C P,YANG S G,et al.Study on origin and accumulation mechanism of coalbedmethane in Miquan Area of southern margin of Zhunggar Basin[J].Coal Science and Technology,2021,49(4):220-226.
[11] 杨曙光，许浩，王刚，等.低煤阶煤层气甲烷风化带划分方法及影响因素———以准南乌鲁木齐矿区为例[J].煤炭学报，2020,45(11):3825-3832.YANG S G,XU H,WANG G,et al.Methane weathering zone division method and influencing factors of low-rank coalbed methane in Urumqi Mining Area,Southern Junggar Basin[J].Journal of China Coal Society,2020,45(11):3825-3832.
[12] 伏海蛟，汤达祯，许浩，等.准南中段煤层气富集条件及成藏模式研究[J].煤炭科学技术，2015,43(9):94-98,11.FU H J,TANG D Z,XU H,et al.Study on enrichment condition and reservoir formation model of coalbed methane in the middle of Southern Junggar Basin[J].Coal Science and Technology,2015,43(9):94-98,11.
[13] 陈振宏，孟召平，曾良君.准噶尔东南缘中低煤阶煤层气富集规律及成藏模式[J].煤炭学报，2017,42(12):3203-3211.CHEN Z H,MENG Z P,ZENG L J.Formation mechanism and enrichment patterns of middle-low rank coalbed methane in Southern Junggar Basin[J].Journal of China Coal Society,2017,42(12):3203-3211.
[14] 吴晓智，王立宏，宋志理.准噶尔盆地南缘构造应力场与油气运聚的关系[J].新疆石油地质，2000,21(2):97-100.WU X Z,WANG L H,SONG Z L.The relation between structural stress feild and hydrocarbon migration and accumulation in southern margin of Junggar Basin[J].Xinjiang Petroleum Geology,2000,21(2):97-100.
[15] 周德华，陈刚，陈贞龙，等.中国深层煤层气勘探开发进展、关键评价参数与前景展望 [J].天然气工业，2022,42(6):43-51.ZHOU D H,CHEN G,CHEN Z L,et al.Exploration and development progress,key evaluation parameters and prospect of deep CBM in China[J].Natural Gas Industry,2022,42(6):43-51.
[16] 徐凤银，闫霞，李曙光，等.鄂尔多斯盆地东缘深部(层)煤层气勘探开发理论技术难点与对策[J].煤田地质与勘探，2023,51(1):115-130.XU F Y,YAN X,LI S G,et al.Theoretical and technological difficulties and countermeasures of deep CBM exploration and development in the eastern edge of Ordos Basin[J].Coal Geology & Exploration,2023,51(1):115-130.
[17] 余琪祥，罗宇，曹倩，等.准噶尔盆地东北缘深层煤层气勘探前景[J].天然气地球科学，2023,34(5):888-899.YU Q X,LUO Y,CAO Q,et al.Exploration prospect of deep coalbed methane in the northeastern margin of Junggar Basin[J].Natural Gas Geoscience,2023,34(5):888-899.
[18] 李站伟，汤达祯，唐淑玲，等.准噶尔盆地南缘富CO2低阶煤层气藏的形成机理研究[J].煤炭科学技术，2021,49(3):175-180.LI Z W,TANG D Z,TANG S L,et al.Study on formation mechanism of CO2 enriched CBM reservoirs in low-rank coalseams from southern Junggar Basin[J].Coal Science and Technology,2021,49(3):175-180.
[19] 田文广，邵龙义，张继东，等.鄂尔多斯盆地南部侏罗系煤层气成因探究[J].中国矿业，2015,24(5):81-85.TIAN W G,SHAO L Y,ZHANG J D,et al.Analysis of genetic types of the coal bed methane of Jurassic Formation,southern Ordos Basin[J].China Mining Magazine,2015,24(5):81-85.
[20] 陶明信.煤层气地球化学研究现状与发展趋势[J].自然科学进展，2005,15(6):648-652.TAO M X.Research status and development trend of coalbed methane geochemistry[J].Progress in Natural Science,2005,15(6):648-652.
[21] 涂志民，车延前，李鹏，等.新疆后峡盆地中—低阶煤煤层气成藏模式[J].煤田地质与勘探，2022,50(5):43-49.TU Z M,CHE Y Q,LI P,et al.Accumulation mode of middle-low rank coalbed methane in Houxia Basin,Xinjiang[J].Coal Geology & Exploration,2022,50(5):43-49.
[22] 孙平，王勃，孙粉锦，等.中国低阶煤层气成藏模式研究[J].石油学报，2009,30(5):648-653.SUN P,WANG B,SUN F J,et al.Research on reservoir patterns of low-rank coalbed methane in China[J].Acta Petrolei Sinica,2009,30(5):648-653.
[23] 皇甫玉慧，康永尚，邓泽，等.低煤阶煤层气成藏模式和勘探方向[J].石油学报，2019,40(7):786-797.HUANGFU Y H,KANG Y S,DENG Z,et al.Low coalrank coalbed methane accumulation model and exploration direction[J].Acta Petrolei Sinica,2019,40(7):786-797.
[24] 刘大锰，王颖晋，蔡益栋.低阶煤层气富集主控地质因素与成藏模式分析[J].煤炭科学技术，2018,46(6):1-8.LIU D M,WANG Y J,CAI Y D.Analysis of main geological controls on coalbed methane enrichment and accumulation patterns in low rank coal[J].Coal Science and Technology,2018,46(6):1-8.
[25] 郭旭升，赵培荣，申宝剑，等.中国深层煤层气地质特征与勘探实践[J].石油与天然气地质，2024,45(6):1511-1523.GUO X S,ZHAO P R,SHENG B J,et al.Geological features and exploration practices of deep coalbed methane in China[J].Oil & Gas Geology,2024,45(6):1511-1523.
[26] 周梓欣，李瑞明，张伟.新疆深部煤层气资源勘探潜力[J].中国煤炭地质，2018,30(7):28-31.ZHOU Z X,LI R M,ZHANG W,et al.Prospect and development direction of deep coal and coalbed methane exploration[J].Coal Geology of China,2018,30(7):28-31.
[27] 蒋曙鸿，师素珍，赵康，等.深部煤及煤层气勘探前景及发展方向[J].科技导报，2023,41(7):106-113.JIANG S M,SHI S Z,ZHAO K,et al.Prospect and development direction of deep coal and coalbed methane exploration[J].Science and Technology Herald,2023,41(7):106-113.
[28] 李曙光，王成旺，王红娜，等.大宁—吉县区块深层煤层气成藏特征及有利区评价[J].煤田地质与勘探，2022,50(9):59-67.LI S G,WANG C W,WANG H N,et al.Reservoir forming characteristics and favorable area evaluation of deep coalbed methane in Daning-Jixian Block[J].Coal Geology & Exploration,2022,50(9):59-67.
[29] 郑永旺，崔轶男，李鑫，等.深层高阶煤层CO2-ECBM技术研究与应用启示——以沁水盆地晋中地区为例[J].石油实验地质，2025,47(1):143-152.ZHENG Y W,CUI Y N,LI X,et al.Research and insights for application of CO2-ECBM technology in deep high-rank coal seam:A case study of Jinzhong block,Qinshui Basin [J].Petroleum Geology & Experiment,2025,47 (1):143-152.
[30] 李亚辉.鄂尔多斯盆地大牛地气田深层中煤阶煤层气勘探实践及产能新突破[J].石油与天然气地质，2024,45(6):1555-1566.LI Y H.Exploration practices of and recent production breakthroughs in deep middle-rank coalbed methane in the Daniudi gas field,Ordos Basin[J].Oil & Gas Geology,2024,45(6):1555-1566.
基本信息:
DOI：10.16152/j.cnki.xdxbzr.2025-05-018
中图分类号:P618.13
引用信息:
[1]涂志民,车延前,李小军,等.新疆地区中—低阶煤煤层气地质特征及勘探思路——以准噶尔盆地南缘硫磺沟区块为例[J].西北大学学报(自然科学版),2025,55(05):1169-1180.DOI:10.16152/j.cnki.xdxbzr.2025-05-018.
基金信息:
国家自然科学基金(41390451); 中国石油前瞻性基础性技术攻关项目(2021DJ2306-006); 中石油煤层气有限责任公司科学研究与技术开发项目(2022-KJ-39)