[1]蒋廷学,卞晓冰,王海涛,等.页岩气水平井分段压裂排采规律研究[J].石油钻探技术,2013,41(05):21-25.[doi:10.3969/j.issn.1001-0890.2013.05.004]
 Jiang Tingxue,Bian Xiaobing,Wang Haitao,et al.Flow Back Mechanism Study of Multi-Stage Fracturing of Shale Gas Horizontal Wells[J].Petroleum Drilling Techniques,2013,41(05):21-25.[doi:10.3969/j.issn.1001-0890.2013.05.004]
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《石油钻探技术》[ISSN:1001-0890/CN:11-1763/TE]

卷:
41卷
期数:
2013年05期
页码:
21-25
栏目:
页岩气钻井完井专题
出版日期:
2013-09-25

文章信息/Info

Title:
Flow Back Mechanism Study of Multi-Stage Fracturing of Shale Gas Horizontal Wells
作者:
蒋廷学1 卞晓冰1 王海涛1 刘致屿2
1. 中国石化石油工程技术研究院, 北京 100101;
2. 中国石油大学(北京)石油工程学院, 北京 102249
Author(s):
Jiang Tingxue1 Bian Xiaobing1 Wang Haitao1 Liu Zhiyu2
1. Sinopec Research Institute of Petroleum Engineering, Beijing, 100101, China;
2. College of Petroleum Engineering, China University of Petroleum(Beijing), Beijing, 102249, China
关键词:
页岩气水平井分段压裂排采规律数值模拟
Keywords:
shale gashorizontal wellmulti-stage fracturingflowback patternnumerical simulation
分类号:
TE357.1+1
DOI:
10.3969/j.issn.1001-0890.2013.05.004
摘要:
目前页岩气水平井压裂后排采主要依靠现场经验,规律性不强。为此,通过挖掘气藏数值模型的功能,并结合井筒流动模型,初步研究了页岩气水平井分段压裂排采规律。基于正交设计原理,考虑了页岩基质参数、裂缝参数及生产参数等13个影响因素。结果表明,影响压后返排率的因素按影响程度排序依次为破胶液黏度、压力系数、井底流压、段数、单段注入量、裂缝半长、日排液量、返排时机、导流能力、束缚水饱和度、裂缝形态、裂缝支撑剖面和吸附气含量。为了取得最好的压裂后排采效果,上述不可控参数可作为选井、选段的重要依据,而可控参数可用来对压裂施工参数进行优化调整。该成果已在涪陵焦石坝区块的页岩气水平井压裂中成功应用,压裂后排采效果显著,多口应用井压裂后获得10×104 m3/d以上的产量,且稳产前景良好。
Abstract:
At present,flowback management after fracturing of shale gas horizontal wells mainly depends on field experience.By combining gas reservoir simulation model and wellbore flow model,multistage fracturing flowback pattern of shale gas horizontal wells was simulated preliminarily.Based on the orthogonal design method,13 factors including rock matrix,fracture,and production are taken into consideration.The results indicate that the factors affecting flowback recovery rank in descending sequence as viscosity of gel breaking fluid,pressure coefficient,bottom hole flowing pressure,total stages,fluid volume injected per stage,half fracture length,flowback rate,flowback time,fracture conductivity,irreducible water saturation,fracture shape,propped fracture profile,and adsorption gas content.To optimize flowback effect,controllable factors among those mentioned above can be used to adjust fracture treatment parameters,and the uncontrollable factors can be used in well and interval candidate selection.The research results have been put into application in shale gas fracturing in Jiaoshiba Block of Fuling in Chongqing,the flowback and production effect after fracturing is very encouraging,where gas production of several horizontal wells reach more than 100,000 m3/d after fracturing,and the decline rate is very low.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2013-7-20;改回日期:2013-9-2。
基金项目:中国石化科技攻关项目"页岩气网络压裂机理及设计方法研究"(编号:P11013)部分研究内容。
作者简介:蒋廷学(1969—),男,江苏东海人,1991年毕业于石油大学(华东)采油工程专业,2007年获中国科学院流体力学专业博士学位,教授级高级工程师,主要从事水力压裂机理、优化设计方法、及现场试验及后评估研究等工作。
联系方式:(010)84988612,lffy-jtx@sohu.com。
更新日期/Last Update: 1900-01-01