油砂SAGD合理开发界限与主控因素研究

发布时间：2018-04-15 16:33

本文选题：蒸汽辅助重力泄油 + 油砂　；参考：《中国科学:技术科学》2017年02期

【摘要】：蒸汽辅助重力泄油(SAGD)技术是油砂开发中应用最广泛的技术,但其开发效果易受到诸如夹层、水层等复杂地质条件的制约.首先,本文通过分析加拿大L油田已投产SAGD井对的生产动态,结合数值模拟结果,研究了HPVH(烃柱高度)、夹层、层间水层和顶水层对SAGD高峰产能的影响规律,并确定了开发界限;其次,通过非线性多元回归方法,建立了高峰产能与影响因素之间的经验公式,并与巴特勒公式计算结果进行了对比;最后,通过蒙特卡罗模拟方法确定了影响高峰产能的主控因素.结果表明,HPVH为影响SAGD高峰产能的主控因素,各因素对高峰产能的影响程度大小排序为HPVH、夹层厚度、层间水厚度、水平井长度和顶水厚度.研究结果为油砂SAGD开发动用储量筛选和井位部署提供了合理依据.
[Abstract]:Steam assisted gravity oil discharge (sagd) technology is the most widely used technology in oil sand development, but its development effect is easily restricted by complex geological conditions such as intercalation and water layers.Firstly, by analyzing the production performance of SAGD well pairs in L Oilfield, Canada, combined with the numerical simulation results, the influence of HPVH (hydrocarbon column height, intercalation, interlayer water layer and top water layer) on the peak productivity of SAGD is studied, and the development limits are determined.Secondly, the empirical formula between peak productivity and influencing factors is established by nonlinear multivariate regression method, and the results are compared with those calculated by Butler formula.The main controlling factors affecting peak productivity are determined by Monte Carlo simulation method.The results show that HPVH is the main factor affecting the peak productivity of SAGD, and the order of influence of each factor on peak productivity is HPVH, interlayer thickness, interlayer water thickness, horizontal well length and top water thickness.The results provide reasonable basis for oil sand SAGD production reserves selection and well location deployment.
【作者单位】：中海石油(中国)有限公司北京研究中心;
【基金】：国家科技重大专项“油砂SAGD开发地质油藏评价及方案优化技术”(编号:2016ZX05031003)资助项目
【分类号】：TE35

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