摘要：Field experience shows that production can reduce the pore pressure and form a pressure sink zone. And it can also significantly affect the surrounding stress field distribution, resulting in infill well (child well) fractures and refracturing fractures tend to propagate towards the old well (parent well), that is "frac-hits". In this paper, based on the theory of linear poroelasticity, a hydro-mechanical coupling model is established, and the COMSOL Multiphysics simulation platform is used to calculate the evolution of formation pressure and stress during production. The results show that: (1) the production of old wells can reduce the horizontal principal stress difference, which in turn promotes stress reversal; (2) there are two types of stress reversal zones formed around old wells: discrete stress reversal zones and continuous stress reversal zone; (3) there are three types of the interference: fracture-to-fracture interference, fracture-to-well interference, and well-to-well interference. To overcome the influence of previous fractures on new fractures, it is recommended that the previous wells be fractured firstly to supplement the formation energy, so that the in-situ stress field is re-established. The model established in this paper can analyze the pore pressure field, stress field evolution and well-to-well interference. Copyright ? 2021 ARMA, American Rock Mechanics Association.

ISSN号：9781713839125

卷、期、页：卷4

发表日期：2021-01-01

期刊分区（SCI为中科院分区）：无

收录情况：EI（工程索引）

发表期刊名称：55th U.S. Rock Mechanics / Geomechanics Symposium 2021

参与作者：吴珊,Zhang, Jianwen

通讯作者：张佳亮,杨子轩Yang, Zixuan

第一作者：葛洪魁,黄萌,申颍浩,王小琼

论文类型：会议论文

论文概要：张佳亮,葛洪魁,黄萌,申颍浩,王小琼,杨子轩Yang, Zixuan,吴珊,Zhang, Jianwen，Geomechanical Modeling of Fracture-to-Well Fracture-to-Fracture and Well-to-Well Interference Caused by Production in Shale Reservoirs，55th U.S. Rock Mechanics / Geomechanics Symposium 2021，2021，卷4

论文题目：Geomechanical Modeling of Fracture-to-Well Fracture-to-Fracture and Well-to-Well Interference Caused by Production in Shale Reservoirs