油藏开发水平分级标准在海上油田的建立与应用

Establishment and Application of Reservoir Development Level Classification Standard in Offshore Oilfield

针对行业标准《油田开发水平分级》不能满足海上油田开发水平分级要求的问题,从海上油田地质油藏特点出发,依据沉积相、边底水类型与流体性质,将中高渗透率水驱砂岩油藏分为了6大类;利用逻辑分析法,对37项开发技术类指标进行逐个筛选,得到水驱油藏具有独立性与代表性的6项技术指标;基于渤海油田34个水驱油藏典型开发单元实际生产数据,通过规律分析,确定了不同类型油藏分级标准与界限值。最终形成了《海上中高渗透率水驱砂岩油藏开发水平分级》标准。该标准的颁布,为渤海油田持续稳产3千万吨奠定了关键基础,有效助力了国内第一大原油生产基地的建设,对海上油田开发具有重要的指导意义。

In view of the problem that the sectoral standard Oilfield development level classification cannot meet the requirements of offshore oilfield development level classification,based on the characteristics of offshore oilfield geological reservoir,according to the sedimentary facies,edge and bottom water types and fluid properties,the waterdriven sandstone reservoirs with medium and high permeability are divided into 6 categories.Using logical analysis method,37 development technology indicators are screened one by one,and 6 representative and independent technical indicators of water-driven reservoir are obtained.Based on the actual production data of 34 typical development units of water-driven reservoirs in Bohai Oilfield,the classification standard and limit value of different types of reservoirs are determined by law analysis.Finally,the standard D evelopment level c lassification of offshore m edium and high permeability water-driven reservoir is formed.The promulgation of this standard has laid a key foundation for the continuous and stable production of 30 million tons of crude oil in Bohai Oilfield,and effectively facilitated the establishment of the largest domestic crude oil production base,which has important guiding significance for the development of offshore oilfields.