崖城气田储层特征及敏感性研究
发布时间：2019-05-10 21:36
【摘要】：针对崖城气田钻井过程中出现的油气层损害等复杂情况,在综合分析研究气田预探井储层岩心资料的基础上,采用X射线衍射、滴定分析、PVT测试等方法,详细描述了储层构造特征、温度压力特征、孔渗特征、流体特征及黏土矿物特征,同时通过速敏、水敏、酸敏、碱敏、应力敏等敏感性试验,系统评价了储层潜在损害因素类型和敏感性程度。试验结果表明:储层临界流速为0.5 m L/min,为弱速敏;最低临界矿化度为9 485.7 mg/L,具有中等程度的水敏损害;储层岩心对盐酸表现出中等偏弱酸敏,土酸则呈现为无敏感性;临界p H值为9,储层为弱碱敏;储层存在弱的应力敏感,临界压力在9~11 MPa。
[Abstract]:On the basis of comprehensive analysis and research on core data of gas field pre-exploration wells, X-ray diffraction, titration analysis and PVT test are adopted to solve the complicated situation of formation damage during drilling in Yacheng gas field. Reservoir structural characteristics, temperature and pressure characteristics, porosity and permeability characteristics, fluid characteristics and clay mineral characteristics are described in detail. At the same time, sensitivity tests such as speed sensitivity, water sensitivity, acid sensitivity, alkali sensitivity and stress sensitivity are carried out. The types and sensitivity of potential damage factors in reservoir are systematically evaluated. The experimental results show that the critical velocity of the reservoir is 0.5 mL / min, which is weakly sensitive, and the lowest critical salinity of 9 485.7 mg/L, has moderate water sensitivity damage. The reservoir core shows moderate weak acid sensitivity to hydrochloric acid, while soil acid shows no sensitivity; the critical pH value is 9, and the reservoir is weak alkali sensitive; the reservoir has weak stress sensitivity, and the critical pressure is 9 / 11 MPa..
【作者单位】： 长江大学地球科学学院;
【分类号】：TE21
[Abstract]:On the basis of comprehensive analysis and research on core data of gas field pre-exploration wells, X-ray diffraction, titration analysis and PVT test are adopted to solve the complicated situation of formation damage during drilling in Yacheng gas field. Reservoir structural characteristics, temperature and pressure characteristics, porosity and permeability characteristics, fluid characteristics and clay mineral characteristics are described in detail. At the same time, sensitivity tests such as speed sensitivity, water sensitivity, acid sensitivity, alkali sensitivity and stress sensitivity are carried out. The types and sensitivity of potential damage factors in reservoir are systematically evaluated. The experimental results show that the critical velocity of the reservoir is 0.5 mL / min, which is weakly sensitive, and the lowest critical salinity of 9 485.7 mg/L, has moderate water sensitivity damage. The reservoir core shows moderate weak acid sensitivity to hydrochloric acid, while soil acid shows no sensitivity; the critical pH value is 9, and the reservoir is weak alkali sensitive; the reservoir has weak stress sensitivity, and the critical pressure is 9 / 11 MPa..
【作者单位】： 长江大学地球科学学院;
【分类号】：TE21
【参考文献】
相关期刊论文 前7条
1 谢建波;;松辽盆地沙河子组井壁稳定性研究[J];能源化工;2015年03期
2 左银卿;张学英;周S，
本文编号：2474016
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