公开(公告)号：US20240209733A1

公开(公告)日：2024-06-27

申请号：US18355372

申请日：2023-07-19

Applicant: Southwest Petroleum University

Inventor： Yulong ZHAO ,  Xiangyu LIU ,  Liehui ZHANG ,  Xiao HE ,  Jianfa WU ,  Zhidong YANG ,  Jie LI ,  Bin ZENG ,  Jian ZHENG ,  Hongxi LI ,  Chengzhong BU ,  Jun PAN ,  Ruihan ZHANG ,  Tao ZHANG ,  Ye TIAN ,  Huiying TANG ,  Weihua CHEN ,  Haoran HU ,  Cheng CHANG ,  Deliang ZHANG

IPC: E21B49/00 ,  G01V11/00

CPC classification number: E21B49/00 ,  G01V11/002

Abstract: The present invention discloses a method, equipment, and readable storage medium for tracking and evaluating the life cycle EUR of horizontal wells, and relates to the field of oil and gas development technology. The present invention divides the life cycle stages of fractured horizontal wells in unconventional oil and gas reservoirs, provides corresponding EUR evaluation steps for different life cycle stages based on the production performance characteristics of fractured horizontal wells in unconventional oil and gas reservoirs in the drilling and fracturing stage, extraction and testing stage, rapid production decline stage, and low pressure and small volume production stage, and establishes the EUR tracking and evaluation process of fractured horizontal wells in unconventional oil and gas reservoirs throughout their life cycle from drilling to abandonment.

公开(公告)号：US20230229830A1

公开(公告)日：2023-07-20

申请号：US17787597

申请日：2022-03-31

Applicant: Southwest Petroleum University

Inventor： Yulong ZHAO ,  Liehui ZHANG ,  Ruihan ZHANG ,  Bin ZENG ,  Huiying TANG ,  Jun PAN ,  Xiao HE ,  Zhidong YANG

IPC: G06F30/23 ,  E21B43/30 ,  E21B43/267

CPC classification number: G06F30/23 ,  E21B43/305 ,  E21B43/267 ,  E21B2200/20 ,  G06F2111/10

Abstract: A method for coupling hydraulic fracture network extension and production performance of a horizontal well in an unconventional oil and gas reservoir includes: establishing a complex hydraulic fracture network model of a fractured horizontal well in an unconventional oil and gas reservoir based on a fracture extension theory; constructing three-dimensional three-phase mathematical models of seepage for the fractured horizontal well based on an embedded discrete fracture model; and constructing a fully implicit numerical calculation model by a finite difference method through three-dimensional orthogonal grids, and solving iteratively, thereby accurately predicting a production performance characteristic of the fractured horizontal well in the unconventional oil and gas reservoir. The method combines a fracture extension model with a production performance prediction model to realize the coupled simulation and prediction of the hydraulic fracture network extension and production performance of the horizontal well in the unconventional oil and gas reservoir.