西南石油大学学报(自然科学版) ›› 2010, Vol. 32 ›› Issue (4): 115-118.DOI: 10.3863/j.issn.1674-5086.2010.04.021

• 石油与天然气工程 • 上一篇    下一篇

义65井区高温低渗油藏储层伤害机理分析

黄 翔1 吴晓东2
  

  1. (1.中国石化胜利油田有限公司河口采油厂,山东 东营 257200; 2.中国石油大学石油天然气工程学院,北京 昌平 102249)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-08-20 发布日期:2010-08-20

FORMATION DAMAGE MECHANISM ANALYSIS OF HIGH TEMPERATURE AND LOW PERMEABILITY RESERVOIR IN WELL YI 65

HUANG Xiang1 WU Xiao-dong2
  

  1. (1.Hekou Oil Plant in Shengli oil field branch of China Petrochemical CO LTD,Dongying Shandong 257200,China;2.Petroleum and gas engineering college of China Petroleum University,Changping Beijing 102249,China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-08-20 Published:2010-08-20

摘要: 义65井区沙三段九砂组油藏属中等水敏性和速敏性的地层,油藏为轻质油-稀油油藏,原油具有低密度、低黏度和高凝固点等特点,地层水总矿化度较高,一般为1100~19900mg/L,水型为NaHCO3型。研究了义65井区高温低渗储层伤害机理,从地层特性、注入水水质、悬浮物堵塞、游离油和乳化油滴、结垢、细菌及以往增产措施等方面评价了可能对储层造成的损坏及损坏程度。义65井区地层的水敏性、速敏性和低渗透性是注水井损害的内在因素,注水井中悬浮固相颗粒、含油量和细菌严重超标,水质不合格是注水井损害的外在因素。

关键词: 义65井区, 低渗, 堵塞, 敏感性, 注入水

Abstract: The Jiusha Formation in Sha 3 member of well Yi 65 is a typical reservoir characterized by medium water sensitivity and speed sensitivity;the crude oil is light thin oil possessing high solidification point,low density,viscosity and sulphur content;the salinity of the formation water can be as high as 1100~19900mg/L in general,and the water belongs to sodium hydrogen carbonate typed water.This paper investigates the formation damage mechanisms of well Yi 65 with high temperature and low permeability,and evaluates the possible damage and damage conditions from the aspects of formation characteristics,injected water quality,suspended particle blocking,free oil,emulsified oil,scaling,bacteria and past stimulation treatments.The internal factors of the damage to water injection wells include water sensitivity,speed sensitivity and low permeability,and the external factors contain solid suspended particles,poor water quality,excessively high oil content and bacteria numbers.

Key words: well Yi 65, low permeability, blocking, sensitivity, injected water

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