Well deployment strategy and enlightenment of Haynesville shale gas play
Received date: 2020-08-18
Revised date: 2020-11-01
Online published: 2021-03-10
Supported by
The China National Science & Technology Major Project(2016ZX05037-006)
Well deployment optimization is an important link to improve reservoir development effect, reduce risk and realize economic benefits. For shale gas wells, the initial gas production is high but the decline is fast, which requires a large number of continuous drillings to meet the demand of production, so it is impossible to achieve primary well pattern, mainly deploying wells in the preferred favorable area and using rolling production strategy. Taking Haynesville, the third largest shale gas play in the United States, as an example, this paper analyzes the well deployment process of about 3 500 gas wells from 2008 to 2017 through window analysis technology, and summarizes the method of well deployment and optimization strategy. The study results show that the development of Haynesville shale gas play is divided into three stages: experimental stage, regional expansion stage and maturity stage, and different well deployment strategies are adopted in different stages. Meanwhile, in each window single well is evaluated dispersedly in the early stage and single well or well group is deployed in the later stage rather than a “carpet type” continuous well distribution mode to reduce risk. The well deployment and optimization strategy of Haynesville shale gas play has certain guidance and reference for shale gas overall deployment planning, step-by-step implementation strategy and risk management in China.
Yu-jin WAN , Chang HE , Yu-ping SUN , Xiao-wei ZHANG . Well deployment strategy and enlightenment of Haynesville shale gas play[J]. Natural Gas Geoscience, 2021 , 32(2) : 288 -297 . DOI: 10.11764/j.issn.1672-1926.2020.11.009
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