石油勘探与开发 >

2020 , Vol. 47 >Issue 3: 547 - 554

DOI: https://doi.org/10.11698/PED.2020.03.10

油气勘探

Orinoco重油带冲刷带测井响应特征及形成过程

  • 陈和平 ,
  • 陈皓 ,
  • 李长文 ,
  • 王玉生 ,
  • 李剑平 ,
  • 黄瑞 ,
  • 田葱葱 ,
  • 侯秋元
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  • 1. 中国石油勘探开发研究院,北京 100083;
    2. 中国石油测井有限公司国际事业部,北京 102200;
    3. 中国石油国际勘探开发有限公司,北京 100034
陈和平（1962-）,男,湖北应城人,本科,中国石油勘探开发研究院教授级高级工程师,主要从事油气田开发和地质研究工作。地址：北京市海淀区学院路20号,中国石油勘探开发研究院美洲研究所,邮政编码：100083。E-mail: chenheping1@petrochina.com.cn

收稿日期: 2019-12-28

  网络出版日期: 2020-05-19

基金资助

国家油气科技重大专项“超重油油藏冷采稳产与改善开发效果技术”（2016ZX05031-001）

收起

Logging response characteristics and formation process of flushed zone in the Orinoco heavy oil belt, Venezuela

  • CHEN Heping ,
  • CHEN Hao ,
  • LI Changwen ,
  • WANG Yusheng ,
  • LI Jianping ,
  • HUANG Rui ,
  • TIAN Congcong ,
  • HOU Qiuyuan
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  • 1. PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China;
    2. International Division, China Petroleum Logging CO. LTD., CNPC, Beijing 102200, China;
    3. China National Oil and Gas Exploration and Development Corporation Ltd., Beijing 100034, China

Received date: 2019-12-28

  Online published: 2020-05-19

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摘要

针对委内瑞拉Orinoco重油带部分区块冲刷带的成因和测井响应机理不清问题,通过对该区块常规测井数据、核磁共振测井数据、流体黏度、岩心分析数据及油田生产数据的综合分析,以冲刷带测井响应为基础,对冲刷带的成因进行分析。分析结果表明,冲刷带的形成主要是由于地表水侵入导致原油稠化,原油稠化形成沥青薄膜（沥青壳）,沥青壳包裹自由水形成了冲刷带。根据测井响应的差异,对冲刷带进行分类,并对两类冲刷带形成的过程进行分析;根据冲刷后的测井曲线特征,证实冲刷开始时期早于油藏成藏时期。图9表2参22

关键词： 冲刷带; 沥青壳; 原油稠化; 淡水淋滤; 泡沫油流; Orinoco重油带

本文引用格式

陈和平 , 陈皓 , 李长文 , 王玉生 , 李剑平 , 黄瑞 , 田葱葱 , 侯秋元 . Orinoco重油带冲刷带测井响应特征及形成过程[J]. 石油勘探与开发, 2020 , 47(3) : 547 -554 . DOI: 10.11698/PED.2020.03.10

Abstract

The origins and logging responses of flushed zones in some blocks of Orinoco heavy oil belt, Venezuela are still unclear. To solve this issue, we examined the conventional logging, nuclear magnetic resonance logging, fluid viscosity, core analysis and oil field production data comprehensively to find out the logging responses and origins of the flushed zones. The results show that the main reason for the formation of flushed zone is surface water invasion, which leads to crude oil densification. The crude oil densification produces asphalt membrane (asphalt crust) which wraps up free water, causing special logging responses of the flushed zones. According to the different logging responses, we classified the flushed zones into two types and analyzed the formation processes of the two types of flushed zones. According to the characteristics of logging curves after water flush, we confirmed that the water flush began earlier than the reservoir accumulation.

Key words： flushed zone; asphalt crust; crude oil thickening; freshwater leaching; foam oil flow; Orinoco heavy oil belt

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