2016年第12期
中州煤炭
准噶尔盆地莫北油田
总第252期
保罗系三工河组储层敏感性特征研究
刘莉，江山，刘梦佳，石若峰（长江大学，湖北武汉430100）
摘要：针对准噶尔盆地莫北油田侏罗系三工河组低孔低渗透储层开采困难的问题，采用研究储层感性特征对其进行储层改造来获得工业油流。采用岩样的流动实验方法，研究了三工河组储层速敏、水敏、盐敏、碱敏和酸敏等敏感性的相应特征，并结合储层薄片分析、X衍射黏土矿物分析结果，综合判断储层敏感性影响因素。研究结果表明：储层具有弱一中等偏弱速敏、中等偏弱水敏一中等偏强水敏、弱一中等偏强盐敏、碱敏性波动范围大、酸敏程度低的特点，且水敏与黏土矿物和砂岩物性有关，物性越好，孔隙连通性越好，水敏程度越高。根据储层敏感性特征，对油蔗后续开发提出在开采作业中应防止发生水敏遇水膨化问题；提高盐度至8010mg/L以上；控制施工液的流速低于24.97m/d；
将流体的pH值控制在7~9；酸化时，应加入适量防止酸化产生沉淀而堵塞孔喉的添加剂。关键词：准噶尔盆地；低孔低渗；储层；敏感性；水敏
中图分类号：TE121
文献标志码：A
文章编号：10030506(2016)12015206
Research on sensitivity characteristics of reservoirs in Jurassic SangongheFormationofMobeioilfieldinJunggarBasin
Liu Li,Jiang Shan, Liu Mengjia, Shi Ruofeng(Yangize Unirersity,Wuhan430100, China)
Abstract : For the mining problem of low porosity and low permeability reservoir exist in Jurassic Sangonghe Formation of Mobei oil field in Junggar Basin, according to the study on the characteristics of reservoir sensitivity , reservoirs were transformed to obtain commer-cial oil. In this paper, by using the flow experiment method of the sample,relevant characteristics , such as velocity sensitivity, water sen sitivity , salt sensitivity ,alkali sensitivity and acid sensitivity , and so on,were studied, combining with the analysis results of thin section analysis, X-ray diffraction and reservoir clay minerals content, the comprehensive judgment of reservoir sensitivity factors were obtained. The experimental results show that the reservoir has characteristics of weak to moderate velocity sensitivity, medium weak to medium strong water sensitivity,weak to medium strong salt sensitivity, alkali sensitivity has large fluctuation and acid sensitivity is weak. And water sensitivity associated with sandstone physical property ,the better the physical property is, the better the pore connectivity is, and the higher the degree of water sensitivity is. In the oil drilling operation,it is better to pay attention to inflation, the salinity of injected water should higher than 8 010 mg/L and the flow rate of construction fluid should lower than 24. 97 m/d and the pH of the fluid should be regulated at 7 to 9. During the acidification, a moderate amount of additives should be added to prevent acidification precipitation and jamporethroat
Keywords : Junggar Basin ; low porosity and low permeability ; reservoir ; sensitivity ; water sensitivity
0引言
在油气田勘探开发过程中，外来流体的侵入与
流体性质和流动形态的改变都会引起储层的敏感性，通常会通过造成渗透率降低而损害油层，引起产量下降"。储层敏感性有速敏、水敏、盐敏、碱敏和
收稿日期：2016-07-08；责任编辑：秦爱新
D0I:10.19389/j. cnki.1003 0506.2016.12.035
作者简介：刘莉（1992一），女，湖南株洲人，硕士研究生，研究方向为油气田开发地质
引用格式：刘莉，江山，刘梦佳，等.准噶尔盆地莫北油田保罗系三工河组储层敏感性特征研究[J].中州煤炭，2016(12）：152-157，162
Liu Li,Jiang Shan, Liu Mengjia , et al. Research on sensitivity characteristics of reservoirs in Jurassic Sangonghe Formation of Mobei oil field in Junggar Basin[ J] . Zhongzhou Coal,2016 (12) :152-157,162
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