地质工程一体化在保德煤层气田勘探开发中的实践与成效

doi:10.3969/j.issn.1672-7703.2018.02.009

摘要/Abstract

摘要： 保德煤层气田位于鄂尔多斯盆地东缘晋西挠褶带北段、河东煤田北部，煤层气资源丰富。保德区块煤层气地质条件具有埋藏浅、含气量低、易碎易垮塌、机械强度低、低孔超低渗、欠压储层等特点，煤层气勘探开发面临着从地质评价、钻完井、储层改造、采气工艺到地面集输等一系列技术问题。针对这些问题，中石油煤层气有限责任公司在系统梳理前期勘探成果的基础上，充分利用现有各类煤田钻孔、地震、钻井、测井、试井、样品分析化验等资料，全面研究区内中低阶煤煤层气的地质特征和储层特征，开展煤层气精细选区评价技术研究，开发适应于中低阶煤的煤层气勘探开发技术系列，坚持地质工程一体化研究，攻克煤层气勘探开发技术瓶颈，不断完善和优化从物探、钻井、压裂、排采到地面工程工艺等系列技术方案，实现了保德区块煤层气的高效开发，建成了目前中国规模最大的中低阶煤煤层气田。

关键词: 煤层气, 保德区块, 中低阶煤, 地质工程一体化, 勘探开发

Abstract: Baode CBM field is located in the north of Hedong Coal field in the northern section of west Shanxi flexure zone, eastern margin of the Ordos Basin and its CBM resources are abundant. The CBM reservoirs in Baode Block are geologically characterized by shallow burial depth, low gas content, frangibility, collapsibility, low mechanical strength, low porosity, extra low permeability and underpressure, so its exploration and development are faced with a series of technological problems, including geological evaluation, well drilling and completion, reservoir stimulation, gas production engineering and surface gathering. To solve these problems, PetroChina Coalbed Methane Co., Ltd. reviewed previous exploration achievements systematically, and then analyzed comprehensively the geological and reservoir characteristics of middle and low rank CBM in the study area based on existing data of various coal fields, e.g. borehole, seismic, drilling, logging, well test and sample assay. It researched the evaluation technology of fine CBM area selection and developed a series of exploration and development technologies suitable for middle and low rank CBM. It also insisted on geology-engineering integration research to break through the bottleneck of CBM exploration and development technologies. Besides, it completed and optimized continuously the technological solutions from the aspects of geophysical exploration, well drilling, fracturing, drainage gas recovery and surface engineering. Thus, the CBM in Baode block is developed efficiently and China's largest middle and low rank CBM field is built up.

Key words: coalbed methane (CBM), Baode block, middle and low rank coal, geology-engineering integration, exploration and development

中图分类号:

温声明, 文桂华, 李星涛, 李翔. 地质工程一体化在保德煤层气田勘探开发中的实践与成效[J]. 中国石油勘探, 2018, 23(2): 69-75.

Wen Shengming, Wen Guihua, Li Xingtao, Li Xiang. Application and effect of geology-engineering integration in the exploration and development of Baode CBM field[J]. China Petroleum Exploration, 2018, 23(2): 69-75.

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