The Open Petroleum Engineering Journal




ISSN: 1874-8341 ― Volume 12, 2019

Productivity Model for Shale Gas Reservoir with Comprehensive Consideration of Multi-mechanisms


The Open Petroleum Engineering Journal , 2015, 8: 235-247

Ya Deng, Rui Guo, Zhongyuan Tian, Cong Xiao, Haiying Han, Wenhao Tan

College of Petroleum Engineering, China University of Petroleum, Beijing 102249, China.

Electronic publication date 31/7/2015
[DOI: 10.2174/1874834101508010235]

CrossRef Citations:
0


Article Metrics:

Geographical View
Total Statistics:

Abstract HTML Views: 411
PDF Downloads: 249
Total Views/Downloads: 715

Unique Statistics:

Abstract HTML Views: 290
PDF Downloads: 182
Total Views/Downloads: 516


Abstract:

Multi-stage fracturing horizontal well currently has been proved to be the most effective method to produce shale gas. This method can activate the natural fractures system defined as stimulated reservoir volume (SRV), the remaining region similarly is defined as un-stimulated reservoir volume (USRV). At present, no type curves have been developed for hydraulic fractured shale gas reservoirs in which the SRV zone has triple-porosity dual-depletion flow behavior and the USRV zone has double porosity flow behavior. In this paper, the SRV zone and USRV zone respectively are simplified as cubic triple-porosity and slab dual porosity media. We have established a new productivity model for multifractured horizontal well shale gas with Comprehensive consideration of desorption, diffusion, viscous flow, stress sensitivity and dual-depletion mechanism in matrix. The rate transient responses are inverted into real time space with stehfest numerical inversion algorithm. Type curves are plotted, and different flow regimes in shale gas reservoirs are identified. Effects of relevant parameters are analyzed as well. The whole flow period can be divided into 8 regimes: bilinear flow in SRV; pseudo elliptic flow; dual inter-porosity flow; transitional flow; linear flow in USRV; inter-porosity flow and boundary-dominated flow. The stress sensitivity basically has negative influence on the whole productivity period .The less the value of Langmuir volume and the lager the value of Langmuir pressure, the more lately the inter-porosity flow and boundary-dominated flow occurs. It in concluded that the USRV zone has positive influence on production and could not be ignored.


Download PDF

Endorsements



"I have to express my sincere appreciation for your hard and professional work. Thank you very much!"


Si Zhang
Institute for Strength and Vibration of Mechanical Structures,
Yangtze University, Jingzhou,
Hubei Province,
China

"My experiences in publishing a paper with Bentham Open is good. I must say that the speed of publication in The Open Petroleum Engineering Journal is very fast. It takes only two month for the pioneer reviewing process. The delay was caused by me. And what’s more, the publisher’s office is quite helpful. I guess they are dealing with thousands emails every week, but they process my request in a very short period of time."


Xin Ma
School of Science, Southwest Petroleum University, Chengdu, China


Browse Contents



Webmaster Contact: info@benthamopen.net
Copyright © 2019 Bentham Open