【摘要】 为了提高三角洲分流河道砂体描述精度,改善二类油层开发效果,开展了浅水湖盆三角洲分流河道单砂体描述方法研究。通过区域沉积调查和岩心观察分析确定了萨、葡油层沉积环境。按照"垂向分期、侧向划界、模式预测"的思路开展储层描述方法研究,形成了地层细分对比、测井相模式建立、平面微相模式预测三角州相储层精细描述技术流程,实现了浅水湖盆河控三角州分流河道砂体精细解剖,把分流河道砂体划分为复合板状、拼合带状、交织网状、分叉枝状、单一连续型5种分流砂体类型,从一类到五类河道规模依次变窄,砂体发育依次变差。深化了储层非均质特征认识,研究方法实现了在油田其他区块推广应用,研究成果在水平井部署和完善注采系统方面进行了应用,见到了较好的挖潜效果。更多还原

【Abstract】 In order to enhance the described precision of the delta distributary channel sandbody and improve the development effects of the second-class oil reservoir,the characterizing method of the distributary channel single sandbody in the shallow lake basin was studied. By means of the regional sedimentary investigation and the core observation & analysis,the sedimentary environments of S and P Reservoirs were determined. According to the ideas of " vertical staging,lateral delimitation and model prediction",the fine-characterization technical flow sheet of the layer subdivision and correlation,logging facies model establishment and micro-facies planar prediction for the delta facies reservoir were promoted,thus the fine study of the distributary channel sandbody in the shallow lake delta was realized and accomplished,the distributary channel sandbody was classified into 5 different types: composite plate,combined zonal,meshed,branched and single continuous distributary sandbodies,the width of the channels decreases along with the 5 types of the sandbody,and the development of the sandbodies gets worse either. The heterogeneous features of the reservoir are deeply understood,the researching method has been widely generalized in the other blocks of the oilfields,the study achievements are used in the deployment of the horizontal welland injection-production system improvements,and moreover the much better potential tapped effects are achieved.更多还原