摘要
在水力压裂设计和采油效率预测中,为提高油气采收率和有效指导水力压裂设计,利用射孔穿透深度(穿深)评价射孔效果至关重要。提出了一种在射孔井段利用声波测井数据对穿深进行定量评价的方法。建立了用于现场测试的射孔套管井模型,并使用有限差分法模拟了井眼单极声源激发的模型井的弹性波传播;多元回归分析后,模拟结果得出射孔穿深与纵波到时延迟和地层慢度之间的关系,对于常用的长源距声波仪器,射孔引起的纵波到时延迟与穿透深度呈线性关系。在此基础上,利用射孔地层层段的模拟声波测井数据验证了这种线性关系。研究表明,结合区块储层的地质参数,利用常用的长源距声波测井仪器测量的纵波到时数据,可以实现对射孔穿透深度的定量计算。
In order to improve oil and gas recovery and effectively guide hydraulic fracturing design,it is very important to evaluate perforation effect by perforation penetration depth in hydraulic fracturing design and oil recovery efficiency prediction.In this paper,a method for quantitative evaluation of perforation depth using acoustic logging in perforated intervals is proposed.A perforated casing well model for field test configuration is established,and the finite difference method is used to simulate the elastic wave propagation of the model well excited by the borehole monopole sound source;after multiple regression analysis,the simulation results show the relationship between perforation penetration depth,P-wave arrival time delay and formation slowness.For commonly used long-distance acoustic logging tools,the P-wave arrival time delay caused by perforation is linearly related to the penetration depth.On this basis,this relationship is verified by using the simulated acoustic logging data of the perforated stratigraphic section.The research in this paper shows that by combining the geological parameters of block reservoirs and using the P-wave arrival time data measured by commonly used long distance acoustic logging tools,quantitative calculation of perforation penetration depth can be achieved.
作者
陈鸣
孙殿强
苏远大
高永德
吴进波
CHEN Ming;SUN Dianqiang;SU Yuanda;GAO Yongde;WU Jinbo(School of Geosciences,China University of petroleum(East China),Qingdao,Shandong 266580,China;Zhanjiang Branch,CNOOC China Limited,Zhanjiang,Guangdong 524057,China)
出处
《测井技术》
2025年第1期111-116,共6页
Well Logging Technology
基金
国家自然科学基金项目“基于成像测井的页岩气储层可压裂性评价方法研究”(41402118)
中国海洋石油集团有限公司重大专项“南海中南部勘探新领域及开发技术研究”(CNOOC-KJ 135 ZDXM 38 ZJ 04ZJ)。
关键词
声波测井
射孔
穿透深度
纵波延迟
水力压裂
acoustic logging
perforation
perforation depth
compressive wave delay
hydraulic fracturing
作者简介
第一作者:陈鸣,男,1982年生,高级工程师,从事测井作业与资料综合分析技术管理工作。E-mail:chenming4@cnooc.com.cn;通信作者:孙殿强,男,1989年生,工程师,从事现场测井作业及资料综合评价工作。E-mail:598956687@qq.com。
