测井技术2017，Vol.41Issue(2)：156-164,9.DOI:10.16489/j.issn.1004-1338.2017.02.006
伊拉克Ahdeb油田稠油层测井识别及分布特征研究新方法
A New Method to Identify Heavy Oil and Characterize Its Distribution with Well Logs in Ahdeb Oilfield,Iraq
摘要
Abstract
There are many problems in the production of Khasib reservoir in Ahdeb oilfield,Iraq.In order to lower the drilling risk of horizontal wells,the distribution of heave oil needs to be characterized.We discuss the log response of heavy oil reservoirs,calculate heavy oil index and characterize the distribution of heavy oil in a 3D geological model.We analyze the difference in the properties of heavy oil and light oil and a theoretical invasion model is proposed to illustrate the difference in resistivity,neutron porosity,bulk density and nuclear magnetic resonance logs in heave oil and light oil reservoirs.The separation magnitude of neutron and density logs combined with the residual oil saturation derived from Archie equation in the flushed zone gives a good indicator of heavy oil,which is termed as heavy oil index in this paper.The heavy oil index is input into the 3D geological model and the distribution characteristics of heave oil is visualized.The horizontal wells drilled in zones with heavy oil index greater than 0.2 either have poor performance or cannot be put into production,which proves the reliability of the characterization of heavy oil distribution.关键词
测井解释/稠油/测井响应/稠油指数/分布特征/水平井/生产特征Key words
log interpretation/heavy oil/logging response/heavy oil index/distribution characteristics/horizontal well/well performance分类
天文与地球科学引用本文复制引用
陈明江,黄婷婷,颜其彬,汪娟,靳松,王海峰,韩翀..伊拉克Ahdeb油田稠油层测井识别及分布特征研究新方法[J].测井技术,2017,41(2):156-164,9.基金项目
中国石油天然气集团公司重大科技专项中东地区碳酸盐岩油藏整体优化部署及提高采收率技术研究与应用(11.2011E-2501.X.01) （11.2011E-2501.X.01）
