Selection of favorable areas for coalbed methane development based on economic benefit evaluation: A case study of Yangjiapo block in eastern margin of Ordos Basin

ZHANG Bing; DU Fengfeng; ZHANG Haifeng; WEI Chao

doi:10.13809/j.cnki.cn32-1825/te.2024.06.015

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Selection of favorable areas for coalbed methane development based on economic benefit evaluation: A case study of Yangjiapo block in eastern margin of Ordos Basin

更新时间：2025-12-05

- Selection of favorable areas for coalbed methane development based on economic benefit evaluation: A case study of Yangjiapo block in eastern margin of Ordos Basin
- Petroleum Reservoir Evaluation and Development Vol. 14, Issue 6, Pages: 933-941(2024)
- 作者机构：
  
  1. 中联煤层气有限责任公司，北京 100011河南理工大学能源科学与工程学院,河南,焦作,454000
  2. 河南理工大学能源科学与工程学院，河南焦作 454000中海艾普油气测试（天津）有限公司,天津,300452
  3. 中海艾普油气测试（天津）有限公司,天津,300452
- 作者简介：
- 基金信息：
- DOI：10.13809/j.cnki.cn32-1825/te.2024.06.015
  CLC： TE37
- Published：2024
- 稿件说明：
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ZHANG Bing, DU Fengfeng, ZHANG Haifeng, et al. Selection of favorable areas for coalbed methane development based on economic benefit evaluation: A case study of Yangjiapo block in eastern margin of Ordos Basin[J]. Petroleum Reservoir Evaluation and Development, 2024, 14(6): 933-941.
DOI：

ZHANG Bing, DU Fengfeng, ZHANG Haifeng, et al. Selection of favorable areas for coalbed methane development based on economic benefit evaluation: A case study of Yangjiapo block in eastern margin of Ordos Basin[J]. Petroleum Reservoir Evaluation and Development, 2024, 14(6): 933-941. DOI： 10.13809/j.cnki.cn32-1825/te.2024.06.015.

摘要

优选煤层气开发的有利区，能为降低煤层气开发投资风险提供重要保障。以鄂尔多斯盆地东缘杨家坡区块山西组4+5号和太原组8+9号煤层为研究对象，通过优选合层开发影响因素，建立了合层开发潜力评价体系；基于煤层气开发特点，采用产能公式，预测了日产气量；基于地质-工程特点，进行了经济效益评价；最终划分了煤层气单层开发、合层开发有利区。结果表明：杨家坡区块煤层气合层开发有利区位于区块的中部及东北部；单层开发4+5号煤层、8+9号煤层与两煤层合层开发的经济极限日产气量分别为982、1 063、1 270 m

；研究区的西北部小部分区域适合进行单层开发，可通过4+5号煤层与8+9号煤层接替开发，提高产气效果；研究区的中南部适合进行合层开发，通过优化排采工作制度，改善产气情况；针对后备区，需进一步查明地质条件、优化施工工艺措施后，再评价开发的可行性。研究结果丰富了多煤层发育区有利区选区方法，为研究区下一步开发方案制定具有一定的指导意义。

Abstract

The selection of favorable areas for coalbed methane（CBM） development provides critical assurance for reducing investment risks. Taking the No. 4+5 coal seam in the Shanxi Formation and the No. 8+9 coal seam in the Taiyuan Formation of the Yangjiapo block in the eastern margin of the Ordos Basin as research objects

a development potential evaluation system was established by optimizing influencing factors for combined layer development. Based on CBM development characteristics

production capacity equations were used to predict daily gas production. Economic ben

efit evaluation was conducted considering geological and engineering features

and favorable areas for single-seam and combined layer CBM development were ultimately delineated. The results showed that the favorable areas for combined layer development in the Yangjiapo block were located in the central and northeastern parts of the block. The economic threshold daily gas production for single-seam development of the No. 4+5 and No. 8+9 coal seams and their combined layer development were 982

063

and 1

270 m

respectively. A small portion in the northwest was suitable for single-seam development

where sequential development of the No. 4+5 and No. 8+9 coal seams could enhance production. The central and southern parts of the block were suitable for combined layer development

where optimizing drainage and production schedules could improve gas yield. For reserve areas

further clarification of geological conditions and optimization of construction techniques were needed before evaluating development feasibility. These findings enrich the methodology for selecting favorable areas in multi-seam CBM zones and provide guidance for future development planning in the study area.

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