页岩气储层水力压裂物理模拟试验研究

张旭; 蒋廷学; 贾长贵; 张保平; 周健

doi:10.3969/j.issn.1001-0890.2013.02.014

页岩气储层水力压裂物理模拟试验研究

doi: 10.3969/j.issn.1001-0890.2013.02.014

中国石化石油工程技术研究院, 北京 100101

详细信息

作者简介:
张旭(1973-),女,2002年毕业于华中科技大学计算机应用专业,2007年获得长江大学油气井工程专业硕士学位,2010年获得中国石油大学(北京)油气井工程专业博士学位,在站博士后,主要从事岩石力学方向的研究工作。联系方式(010)84988661,313734037@qq.com。

中图分类号: TE357.1
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出版历程
- 收稿日期: 2013-03-03
- 修回日期: 2013-03-08
- 刊出日期: 2013-04-19

Physical Simulation of Hydraulic Fracturing of Shale Gas Reservoir

Sinopec Research Institute of Petroleum Engineering, Beijing, 100101, China

摘要

摘要: 为了给彭水地区页岩气开发提供技术支持,进行了页岩储层水力压裂物理模拟试验研究,建立了一套页岩储层水力压裂大型物理模拟试验方法。利用声发射监测系统实时监测了页岩压裂裂缝的产生与扩展演化过程,观察了水力压裂裂缝形态,并探讨了压裂液黏度、地应力差异系数、压裂液泵注排量等因素对水力裂缝形态及其扩展的影响。试验结果表明,随着压裂液黏度降低、地应力差异系数减小,水力裂缝沿着天然裂缝方向延伸,将原有天然裂缝沟通并形成网络裂缝。根据泵压曲线变化结果,提出在实际压裂施工过程中采用变排量的方式提高压裂改造体积,这可为页岩气压裂优化设计提供依据。
- 页岩气 /
- 水力压裂 /
- 物理模拟 /
- 裂缝延伸
Abstract: In order to provide technical support to shale gas development in Pengshui Area,physical simulation of hydraulic fracturing of the shale reservoir was carried out and a set of experimental methods was established.The initiation and growth of fractures in shale was monitored on real-time,and the fracture morphology observed by acoustic emission system.In addition,this paper discussed the effect of fluid viscosity,in-situ stress difference and pumping rate of fracturing fluid on the geometrical shape and growth of hydraulic fractures.Experimental results showed that hydraulic fractures might extend along natural fractures and natural fracture might be communicated to form fracture network as the viscosity of fracturing fluid and in-situ stress difference drops.According to the pump pressure curve,this paper put forward a variable pumping rate method to improve simulated reservoir volume(SRV),which provides technical basis for fracturing optimization of shale gas.
- shale gas /
- hydraulic fracturing /
- physical simulation /
- fracture extension

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参考文献(14)

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