碳酸盐岩油藏酸压裂缝参数优化研究  

Optimization of acid pressure fracture parametersin carbonate reservoir

作　　者：江锚 王黎 李文勇 张海龙 罗智 JIANG Mao;WANG Li;LI Wenyong;ZHANG Hailong;LUO Zhi(CNOOC Research Institute Co.,Ltd.,Beijing 100028,China;CNOOC International Company Limited,Beijing 100028,China)

机构地区：[1]中海油研究总院有限责任公司,北京100028 [2]中国海洋石油国际有限公司,北京100028

出　　处：《石油化工应用》2024年第11期35-40,60,共7页Petrochemical Industry Application

摘　　要：M油田是大型低渗碳酸盐岩油藏,储层非均质性较强,油藏储集空间以溶洞、溶孔和裂缝为主。为保证油田开发的经济利益,由于其物理性质与储存能力的不足以及储层损伤等问题阻碍了高效使用储层,因此,有必要改进碳酸盐岩油藏储层改良的技术方案。以达到稳定生产的目标,需要深入研究相应的增产方法。其中,酸化压裂是一种关键的提升碳酸盐岩储层产量的方法,它能有效连接油气的流动路径和存储区域。而产量数值模拟则被视为评估酸化压裂成效并调整酸化压裂参数的关键方法。基于均匀的地层直线模型,得出了直井产量公式。然后,根据储层分级评定的结果,运用数值模拟软件分析了各种类型的储层中酸压直井裂缝参数对于产量的影响,从而确定出各类储层最佳裂缝长度及其导流能力。M oilfield is a large low-permeability carbonate reservoir with strong reservoir heterogeneity,and the reservoir space is mainly composed of karst caverns,solution pores and fractures.In order to ensure the economic benefits of oil exploitation,due to the lack of physical properties and storage capacity,as well as reservoir damage and other problems hinder the efficient use of reservoirs,it is necessary to improve the technical scheme of carbonate reservoir improvement.In order to achieve the goal of stable production,we need to deeply study the corresponding methods of increasing production.Acidizing and fracturing is a key method to increase the production of carbonate reservoirs,which can effectively connect the flow path of oil and gas to the storage area.Productivity simulation is considered a key method for evaluating the effectiveness of acid fracturing and adjusting the parameters of acid fracturing.Based on the uniform formation linear model,the linear productivity formula is obtained.Then,according to the results of reservoir grading evaluation,the influence of acid pressure vertical well fracture parameters on the productivity of various types of reservoirs is analyzed by numerical simulation software, so as to determine the optimal fracture length and flow conductivity of various types of reservoirs.

关 键 词：碳酸盐岩 酸化压裂 产能分析 裂缝参数优化 

分 类 号：TE357.2[石油与天然气工程—油气田开发工程]