西安石油大学学报（自然科学版）2024，Vol.39Issue(4)：1-9,9.DOI:10.3969/j.issn.1673-064X.2024.04.001
大宁—吉县区块深部煤层气富集主控因素分析及地质工程甜点区评价
Analysis of Main Controlling Factors of Deep Coalbed Methane Enrichment and Evaluation of Geological and Engineering Sweet Areas in Daning-Jixian Block
摘要
Abstract
Accurate evaluation and reasonable selection of geological engineering dessert areas for coalbed methane are the basis for de-tailed formulation of integrated exploration and development plans of coalbed methane.Through in-depth analysis of coal core descrip-tion,chemical analysis,logging,seismic data,and development dynamics of the 8# coal seam in the deep Carboniferous Benxi Formation of the Daning-Jixian block,the main controlling factors of deep coalbed methane enrichment were discussed from the aspects of the roof and floor lithology and thickness of coal seam,structure,sedimentary environment,and coal rock characteristics.The evaluation criteria for geological and engineering sweet areas were established,and the geological engineering sweet spot areas in the study area were fur-ther divided.The research results indicate that the enrichment of coalbed methane is mainly influenced by the roof and floor lithology,structure and coal rock characteristics,and the influence of sedimentary environment on coalbed methane enrichment is mainly reflected in the combination and sealing characteristics of the roof and floor rock.According to evaluation result,in the study area,there are geo-logical class Ⅰ-engineering class Ⅰ favorable area of 411.5 km2,with a resource volume of 1 038.75 × 108 m3,geological class Ⅱ-engi-neering class Ⅰ favorable area of 596.2 km2,with a resource volume of 1 192.4 × 108 m3 and the geological class Ⅱ-engineering class Ⅱfavorable area of 287.4 km2,with a resource volume of 574.5 × 108 m3.关键词
深部8#煤层/甜点区评价/煤层气/主控因素/地质工程/大宁—吉县区块Key words
No.8 deep coal seam/sweet spot evaluation/coalbed methane/main control factor/geological engineering/Daning-Jixian block分类
天文与地球科学引用本文复制引用
王成旺,刘新伟,李曙光,熊先钺,王玉斌,陈高杰..大宁—吉县区块深部煤层气富集主控因素分析及地质工程甜点区评价[J].西安石油大学学报（自然科学版）,2024,39(4):1-9,9.基金项目
国家科技重大专项(2016ZX05042) （2016ZX05042）
中石油煤层气有限责任公司科技重大专项(2020-KJ-04) （2020-KJ-04）
