微裂缝模拟新方法及承压封堵能力评价实验研究及应用  

Experimental Research and Application of a New Method for Microfracture Simulation and Evaluation of Pressure Sealing Capacity

作　　者：周双君 柳新国 段江 白杨 郭晓冰 兰晓云 Zhou Shuangjun;Liu Xinguo;Duan Jiang;Bai Yang;Guo Xiaobing;Lan Xiaoyun(Drilling Fluid Company,CNPC Xibu Drilling Engineering Company Limited,Xinjiang,834000;School of Petroleum Engineering,Southwest Petroleum University,Sichuan,615000;State Key Laboratory of Oil&Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Sichuan,615000)

机构地区：[1]中国石油集团西部钻探工程有限公司钻井液分公司,新疆834000 [2]西南石油大学石油与天然气工程学院,四川615000 [3]西南石油大学油气藏地质及开发工程国家重点实验室,四川615000

出　　处：《当代化工研究》2023年第9期115-117,共3页Modern Chemical Research

摘　　要：对于微裂缝的模拟方法来说,目前国内外使用的模拟方法有:人造岩心、砂盘和钢板模具等,这些评价方法均不能模拟复杂裂缝形态,本文借助3D打印技术和三维重构技术,能够有效复刻裂缝的真实复杂形态,并在此基础上研制了一套新型的承压评价装置。借助此研究,在室内试验中评价优选出了ZD系列刚性材料与EP-Ⅱ柔性材料,利用ZD系列刚性材料与EP-Ⅱ柔性材料合理搭配及时封堵,形成致密封堵段塞,从而提高地层承压能力,室内实验结果表明,该配方能够在基浆基础上提高承压能力达6MPa。As for the simulation methods of cracks,the simulation methods currently used at home and abroad include artificial core,sand plate and steel plate mold,etc.None of these evaluation methods can simulate the complex fracture morphology.In this paper,with the help of 3D print-ing technology and 3D reconstruction technology,the real complex morphology of cracks can be effectively reproduced,and on this basis,a new set of pressure evaluation device is developed.Based on this study,the ZD series rigid material and EP-Ⅱflexible material were evaluated and optimized in the laboratory test.The ZD series rigid material and EP-Ⅱflexible material were properly combined to form a tight plugging slug in time,so as to im-prove the pressure bearing capacity of the formation.The laboratory test results show that the formula can increase the pressure bearing capacity of the base slurry by 6 MPa.

关 键 词：微裂缝 3D打印 三维重构 承压能力 

分 类 号：TE28[石油与天然气工程—油气井工程]