Analysis of factors affecting frac hits in horizontal shale gas wells in the southern Sichuan Basin#br#

doi:10.3969/j.issn.1672-7703.2021.02.011

Abstract

Abstract: Well group platform has become a popular way of shale gas development. Relying on scientific research and field test,
shale gas resources with burial depth shallow than 3500 m have been commercially developed in a large scale in the southern Sichuan Basin. In order to improve the overall benefit, a series of development technology strategy adjustments have been implemented,such as shortening the well spacing, increasing the intensity of stimulation, etc., during which frac hits occurred frequently.The pressure conduction model for synchronous operation of fracturing and production on the same platform is established,and the factors affecting frac hit are clarified, including (1) natural fracture development; (2) well spacing; (3) cluster
spacing; (4) fracturing operation parameters; (5) hydraulic fracture geometry. Based on the development concept of integrated geology and engineering, this paper puts forward technical measures for prevention and control the frac hit, which has achieved remarkable results. This will provide support for the further deep research and the strategic adjustment of development technology.

CLC Number:

TE357.14

Zhou Xiaojin, Yang Hongzhi, Fan Yu, Zeng Bo, Song Yi, Yuan Shusheng, He Bin, Liu Bo, Yang Lei, Song Wenjing, Wang Junyuan. Analysis of factors affecting frac hits in horizontal shale gas wells in the southern Sichuan Basin#br#[J]. China Petroleum Exploration, 2021, 26(2): 103-112.

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