Petroleum Reservoir Evaluation and Development >
2020 , Vol. 10 >Issue 5: 70 - 76
DOI: https://doi.org/10.13809/j.cnki.cn32-1825/te.2020.05.010
Research and application of key technologies for fracturing of normal pressure shale in Southeastern Chongqing
Received date: 2020-02-23
Online published: 2020-09-24
The normal pressure shale gas reservoir in Southeastern Chongqing is characterized by large horizontal stress difference and high angle fracture development, so that it is difficult to form the complex fracture network and further realize the economic development. In order to solve these problems, key technologies of fracturing in normal pressure shale gas reservoir is studied. Based on the analysis of the fracturing technology of normal pressure shale gas horizontal wells in the Pengshui block, and by drawing on the successful experience of foreign marine shale gas fracturing, the scale of fracturing transformation, continuous sanding process and interim period have been continuously explored and optimized to improve the complexity of fractures and increase the volume of single section reconstruction to form a large-scale complex fracture network. Good results have been achieved in the current application in well-LY2HF and well-JY10HF of daily gas production of 9.6×104 m3 and 16.7×104 m3 respectively, thus realizing the economic development of normal pressure shale gas.
Tao CEN , Haibang XIA , Lin LEI . Research and application of key technologies for fracturing of normal pressure shale in Southeastern Chongqing[J]. Petroleum Reservoir Evaluation and Development, 2020 , 10(5) : 70 -76 . DOI: 10.13809/j.cnki.cn32-1825/te.2020.05.010
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