Quantitative Evaluation and Application of Main Control Factors for High Production of Horizontal Shale Gas Wells

doi:10.3969/j.issn.1006-6535.2021.05.016

Abstract

Abstract: In view of the great difference in the productivity of horizontal shale gas wells under the same geological conditions or construction technologies, taking the WH platform of the Weiyuan shale gas field as an example, 12 parameters were selected to determine the main production control factors with the principal component analysis method. The results showed that the two principal components selected by the principal component analysis method reflected 94.09% information of the original parameters comprehensively; fracturing length, high-quality reservoir thickness, number of fracturing sections, fracturing fluid consumption, and drilling length and fracturing length of high-quality reservoir were the main control factors for horizontal wells in WH platform. A comprehensive parameter “SRV factor” considering the three dimensions of SRV at the same time was established with high-quality reservoir thickness, high-quality reservoir fracturing length and fracturing fluid consumption as representative parameters. A gas well production prediction model was established through calibration with production to realize fast and accurate production prediction. This study provides a reference for gas well construction, production prediction and reasonable development technology.

Key words: shale gas, main control factors of productivity, principal component analysis method, production prediction, effective reservoir stimulation volume, Weiyuan Shale Gas Field

CLC Number:

TE348

He Chang, Wan Yujin, Geng Xiaoyan, Su Yunhe, Zhang Xiaowei. Quantitative Evaluation and Application of Main Control Factors for High Production of Horizontal Shale Gas Wells[J]. Special Oil & Gas Reservoirs, 2021, 28(5): 113-119.

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