智能分注分采技术改善水驱开发效果评价方法
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罗云龙(1994—),男,四川绵阳人,在读硕士研究生,从事提高油气采收率研究。E-mail:lyunlong0212@126.com。

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中海油有限公司重大科技攻关课题“渤海油田智能分注分采产业化应用效果”(CCL2017TJTZLST0772)。


Evaluation method of intelligent separate injection-production technique for improving water-flooding development effect
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    摘要:

    近年来,智能分注分采技术在改善油藏水驱开发效果方面发挥着十分重要作用,为评价该技术改善水驱开发效果程度,考虑储层物性、流体性质、采出程度和开发动态等影响因素,建立了一套量化综合评价方法。首先对油田常用开发效果评价指标进行归纳分类,确定筛选原则并依据逻辑分析法筛选出了9个典型评价指标,再以采收率为目标函数,结合灰色关联分析法和层次分析法,确定各评价指标综合权重,在此基础上,依据油田现有开发水平分级行业标准,建立不同原油黏度和含水阶段下分级制评分标准。计算目标油田智能分注分采技术应用前后综合分值和分差值,该分差值代表智能分注后水驱开发效果改善程度,差值越大,水驱开发改善程度越大,剩余油动用程度越高。数值模拟结果也表明,分差值与增油效果呈正相关。

    Abstract:

    In recent years,intelligent separate injection-production techniques have been playing a very important role in improving the water-flooding development effect of reservoirs. For the evaluation of the improvement in water-flooding development effect,a set of quantitative comprehensive evaluation method is established considering the influencing factors such as physical properties of reservoirs,fluid properties,recovery,and development performance. Firstly,common evaluation indexes are classified and the selection principle is determined to sort out nine typical evaluation indexes according to the logical analysis method. Then,the comprehensive weights of evaluation indexes are determined through grey relational analysis and analytic hierarchy process with recovery factor taken as the objective function. On this basis,according to the existing industry standards for the grading of oilfield development levels,the grading scoring standards at different crudeoil viscosity and water-cut stages are established. The comprehensive score and score difference before and after the application of the intelligent separate injection-production technique in the target oilfield are calculated. The score difference represents the improvement in water-flooding development effect. A greater score difference means a better improvement in water-flooding development effect and a higher producing degree of the remaining oil. The results of numerical simulation also show that there is a positive correlation between score difference and increased oil production.

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罗云龙,卢祥国,曹豹,刘义刚,夏欢.智能分注分采技术改善水驱开发效果评价方法[J].油气地质与采收率,2021,28(2):119~126

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  • 在线发布日期: 2021-06-02