第34卷第4期 2017年7月
钻井液与
究
井液
DRILLINGFLUID&COMPLETIONFLUID
doi: 10.3969/j.issn.1001-5620.2017.04.001
煤岩气层损害机理与评价方法游利军，林子岚1，江安2，康毅力「，崔凯潇
Vol.34 No. 4 July2017
（1.西南石油大学·油气藏地质及开发工程国家重点实验室，成都610500；2.中海油能源发展股份有限公司工程技术分公司，天津300452）
游利军，
林子岚，
江安，
等.烘当气层损害机理与评价方法[].钻并液与完并液，2017。34（4：1-8
YOU Lijun, LIN Zilan, JIANG An, et al. Mechanisms and evaluation of coal gas bed damage[JJ.Driling Flid & Cowpletiors Fladled
2017.
34(4): 1-8
摘要
机理
的优缺点及其适用系件
既影响煤层排：
价不全
虑具有吸附
关键词
经待建立工
传质过程结合
下水相渗流能力的损害评价
模层
中图分类号：
TE258
：储层报害
登费范
专质过费的操著糖品报等详价
：机理：吸附：多尺度：综型
文献标识码：
岩气层特点，
分析了媒当气层损害类型与
损害评价方法，分析各评价方法荣粉运移培塞是煤岩气层主要损害类型
一传质过程储层摄害评
但渗透能力评价仍尴是关诚，同时要著
文章编号：1001-5620（2017）04-0001-08
Mechanisms and Evaluation of Coal Gas Bed Damage YOU Lijun', LIN Zilan', JIANG An2, KANG Yili', CUI Kaixiao
(1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwesr Petroleum University, Chengdu,
Sichuan 610500;2. CNOOC EnerTech-Drilling & Production Co.Tianjin 300452)
Abstract Coalbed methane (CBM) has great reserves in the world, and thus has great development potential. Unlike the production of conventional oil and gas, there still have no methods and performance parameters for evaluating damages caused to CBM-bearing formations. In this paper, based on the characteristics of coalbed gas formations, the types and mechanisms of fomation damages are analyzed, and single-parameter evaluation methods presently used worldwide are summarized. These methods have been used to evaluate the damages caused to coalbeds with a single parameter, such as the desorptivity, diffusivity and filtration performance, respectively. The advantages and disadvantages, and the applicability of each method are also analyzed. The main damages to coalbed include stress-induced damage, solids invasion into and block of fractures in coalbed, retention of adsorbed polymer molecules, alkalinity-induced damage, and damage caused by migration and block of coal powders etc. Formation damage to coalbed not only affects water drainage, it also affects gas production, and the water draining ability of coalbed also affects gas production. Coalbed damage evaluation with measuring of single-process mass transfer is not an all-round method, and a method combining single-process mass transfer and the multiple-process mass transfer is urgently needed. Nonetheless, the evaluation of the coalbed permeability is the key to a method. Damage to the flow of water in coalbed with gas adsorption is another factor that should be considered in designing the evaluation method.
Key words Coalbed methane; Coal; Formation damage: Mechanism; Adsorption; Multi-scale: Review
中国煤层气资源丰富，位居世界第3位，与陆上常规天然气资源量相当。2015年中国煤层气
年产量近44×10°m。作为一种清洁能源，煤层气的有效勘探与开发具有重要意义，不仅能够弥补
基金项目：国家自然基金面上项目（51674209）和非常规油气层保护四川省青年科技创新研究团队项目（2016TD0016）。第一作者简介：游利军，教授、博士生导师，1976年生，主要从事储层保护、非常规油气、岩石物理教学和科研工作。
电话（028）83032118; E-mail :youlj0379@126.com。万方数据