Based on self-made shale formation simulated artificial cores to evaluate water-based drilling fluids plugging effect technology

作     者：Yang Bai Chunyan Liu Guojun Li Ren Wang Dezhi Liu Pingya Luo Yang Bai;Chunyan Liu;Guojun Li;Ren Wang;Dezhi Liu;Pingya Luo

作者机构：State Key Laboratory Oil and Gas Reservoir Geology and ExploitationSouthwest Petroleum UniversityChengdu610500China CNPC Engineering Technology R&D Company LimitedBeijing102206China 

出 版 物：《Petroleum Research》 (石油研究（英文）)

年 卷 期：2023年第8卷第1期

页      面：11-17页

核心收录：

学科分类：0820[工学-石油与天然气工程] 082001[工学-油气井工程] 08[工学] 

基　　金：All work was supported by Open Fund(PLN201905)of State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation(Southwest Petroleum University) The Natural Science Foundation of China(No.51702270) PetroChina Innovation Foundation(No:2018D-5007-0604) 

主　　题：Plugging evaluation method Artificial cores Reproducibility Permeability reduction rate 

摘      要：Plugging technology is one of the leading problems in shale gas drilling engineering,as it causes wellbore stability,shale formation collapse,and so *** order to solve these problems,in this paper,we committed to preparing artificial cores whose original permeability was 1.16×10^(−4)mD,which could be used to simulate the shale formation,and established a sealing evaluation method to assess the effect of plugging technology by measuring permeability reduction rate K .Verified the good reproducibility of the artificial cores through a lot of high temperature and high pressure(HTHP)filtration *** Scanning electron microscopy(SEM)was used to prove that the permeability reduction rate is a scientific method to evaluate the sealing effect.