| 何子琼,郭艳琴.鄂尔多斯盆地麻地沟地区长6储层敏感性分析[J].矿产勘查,2020,11(8):1684-1689 |
| 鄂尔多斯盆地麻地沟地区长6储层敏感性分析 |
| Analysis on sensitivity of Chang 6 reservoir in Madigou area,Ordos Basin |
| 投稿时间：2020-01-10 |
| DOI： |
| 中文关键词: 低渗透油藏 黏土矿物 储层敏感性 损害程度 麻地沟地区 鄂尔多斯盆地 |
| 英文关键词: low permeability reservoir, clay mineral, reservoir sensitivity, degree of damage, Madigou area, Ordos Basin |
| 基金项目:国家科技重大专项专题(编号:2017ZX05005002-004)、国家油气重大专项(编号:2016ZX05046-002)、国家自然科学基金重大项目(编号:41390451,41330315)和国家自然科学基金青年项目(编号:41502107)联合资助。 |
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| 中文摘要: |
| 鄂尔多斯盆地麻地沟地区长6储层属于低孔、特低渗储层,储层渗流条件较差。为厘清储层敏感性对渗流条件的影响以及储层的损害机理,通过X衍射、全岩定量分析、薄片鉴定、室内岩芯流动实验等,对研究区长6储层进行了敏感性评价。结果表明,麻地沟地区长6储层具有弱水敏、弱酸敏、弱碱敏、中等偏弱盐敏以及弱速敏等特征。针对储层敏感性问题,可采用注入与储层内流体水质相同或相近的水、压裂和酸化等措施改造、控制入井流体的pH值、调节注入储层流体的矿化度、控制注水速度等措施使其增产。实验结果可为研究区长6低渗透油藏的可持续开发和保护提供理论依据。 |
| 英文摘要: |
| Chang 6 reservoir in Madigou area belongs to low porosity and ultra-low permeability reservoir, and its seepage condition is poor. In order to understand the influence of reservoir sensitivity on seepage conditions and the mechanism of reservoir damage, the sensitivity evaluation of Chang 6 reservoir in the study area was carried out by X-ray diffraction, quantitative analysis of whole rocks, thin section identification, and indoor core flow experiments.The results show that Chang 6 reservoir in Madigou area has characteristics of weak water sensitivity, weak acid sensitivity, weak alkali sensitivity, moderately weak salt sensitivity, and weak velocity sensitivity. In view of the reservoir sensitivity, measures such as injection of water with the same or similar water quality as that in the reservoir, fracturing and acidizing, etc., control of the pH value of the fluid entering the well, adjust the salinity of the injected reservoir fluid, and control the injection rate can be taken to increase the production.The experimental results can provide theoretical basis for the sustainable development and protection of Chang 6 low permeability reservoir. |
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