耿铁鑫,孙仁远,王世辉
GENG Tiexin,SUN Renyuan,WANG Shihui

• 1:中国石油大学(华东)石油工程学院
• 2:大庆油田有限责任公司井下作业分公司
• 3:大庆油田有限责任公司勘探开发研究院

摘要(Abstract)：

针对煤层气压裂储层选择和压裂施工的问题,从煤层地质力学角度,提出了煤层气压裂储层选择的评价指标及分级条件。结果表明,采用评价指标优选出3个主力煤层,根据煤心特征进行了室内压裂液优化实验,煤层物性和裂缝发育情况选用高排量(7~9 m~3/min)、低砂比(8%~9%)的缝网压裂方式进行施工。压裂结果显示施工中地表压力平稳,未发生砂堵,压裂后实际排采最高日产气量达2 470 m~3。
In the light of the problems of choosing the reservoir and fracturing operation for CBM,from the viewpoints of the geological mechanics of the reservoirs,the evaluation indexes and grading conditions are proposed for the choice.The results show that the three main coalbeds are optimized by means of the indexes,and moreover according to the coal core characteristics,the indoor optimizing experiment on the fracturing fluid is conducted,the fracture-network fracturing technique with high flow rate(7-9 m~3/min) and low proppant concentration(8%-9%) is adopted and operated for the coalbed physical properties and fracture developed conditions.The fractured results showed that in the construction process the surface pressure maintained stable,no sand plug happened,and the maximal daily gas production had reached to 2 470 m~3.

关键词(KeyWords)： 煤层气;水力压裂;地质力学参数
coalbed methane(CBM);hydraulic fracturing(HF);geological mechanics parameter

Abstract:

Keywords:

基金项目(Foundation): 中国石油天然气股份公司重大专项“大庆探区非常规油气勘探开发关键技术研究与现场试验”(2012E-2603-08)

作者(Author): 耿铁鑫,孙仁远,王世辉
GENG Tiexin,SUN Renyuan,WANG Shihui

参考文献(References)：

• [1]万玉金,张劲,王新海,等.煤层气经济开采增产机理研究[M].北京:科学出版社,2011.
• [2]宁树正.中国赋煤构造单元与控煤特征[D].北京:中国矿业大学,2012.
• [3]李志刚,付胜利,乌效鸣,等.煤岩力学特性测试与煤层气井水力压裂力学机理研究[J].石油钻探技术,2000,28(3):10-13.
• [4]夏彬伟,胡科,卢义玉,等.井下煤层水力压裂裂缝导向机理及方法[J].重庆大学学报,2013,36(9):8—12.
• [5]王红岩,刘洪林,李贵中,等.煤层气储量计算方法及应用[J].天然气工业,2004,24(7):26—28.
• [6]张怀文.煤层气开采工艺技术[J].新疆石油科技,2014,20(4):33—40.
• [7]梁利,丛连铸,卢拥军,等.煤层气井用压裂液研究及应用[J].钻井液与完井液,2001,18(2):23—26.