页岩气水平井分段压裂排采规律研究

蒋廷学; 卞晓冰; 王海涛; 刘致屿

doi:10.3969/j.issn.1001-0890.2013.05.004

页岩气水平井分段压裂排采规律研究

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

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。

详细信息

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。

中图分类号: TE357.1⁺1
计量
- 文章访问数: 4665
- HTML全文浏览量: 93
- PDF下载量: 3779
出版历程
- 收稿日期: 2013-07-19
- 修回日期: 2013-09-01
- 刊出日期: 1899-12-31

Flow Back Mechanism Study of Multi-Stage Fracturing of Shale Gas Horizontal Wells

1.
Sinopec Research Institute of Petroleum Engineering, Beijing, 100101, China;
2.
College of Petroleum Engineering, China University of Petroleum(Beijing), Beijing, 102249, China

摘要

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。
- 页岩气 /
- 水平井 /
- 分段压裂 /
- 排采规律 /
- 数值模拟
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.
- shale gas /
- horizontal well /
- multi-stage fracturing /
- flowback pattern /
- numerical simulation

HTML全文

参考文献(7)

[1]	Elmer W G,Elmer S J,Elmer T E.New single-well standalone gas lift process facilitates Barnett shale fracture-treatment flowback[J][R].SPE Production Operations,2010,25(1):59-64.
[2]	Cheng Y.Impact of water dynamics in fractures on the performance of hydraulically fractured wells in gas shale reservoirs[R].SPE 127863,2010.
[3]	Crafton J W.Flowback performance in intensely naturally fractured shale gas reservoirs[R].SPE 131785,2010.
[4]	King G E,Leonad D.Utilizing fluid and proppant tracer results to analyze multi-fractured well flow back in shales: a framework for optimizing fracture design and application[R].SPE 140105,2011.
[5]	Clarkson C R.Modeling 2:phase flowback of multi-fractured horizontal wells completed in shale[R].SPE 162593,2012.
[6]	Agrawal S,Sharma M M.Impact of liquid loading in hydraulic fractures on well productivity[R].SPE 163837,2013.
[7]	蒋廷学,胥云,张绍礼,等.水力压裂后返排期间放喷油嘴尺寸的动态优选方法[J].石油钻探技术,2008,36(2):54-59. Jiang Tingxue,Xu Yun,Zhang Shaoli,et al.Optimization of chock size during flowing back after hydraulic fracturing[J].Petroleum Drilling Techniques,2008,36(2):54-59.

施引文献

资源附件(0)

计量

文章访问数: 4665
HTML全文浏览量: 93
PDF下载量: 3779
被引次数: 0

页岩气水平井分段压裂排采规律研究

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。

计量

出版历程

Flow Back Mechanism Study of Multi-Stage Fracturing of Shale Gas Horizontal Wells

计量

出版历程

目录

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。