油藏立体开发探讨

为有效开发辽河油田潜山稀油油藏、隔夹层发育的中深层块状稠油油藏及特深层块状稠油油藏,建立了多段多层水平井叠置、直井注汽平面驱替加水平井垂向重力泄油、叠置双水平井注汽排液加直井采油3种立体开发模型,采用现场测试、物理模拟、数值模拟等技术研究了3种立体开发方式的开发机理。潜山稀油油藏立体开发机理为分段均压作用、垂向重力作用及立体联供作用;隔夹层发育的中深层块状稠油油藏立体开发机理为重力泄油和蒸汽驱作用;特深层块状稠油油藏立体开发机理为重力泄水作用、减少热损失作用和提高采注比作用。辽河油田兴古潜山稀油油藏、杜84块兴Ⅵ油层组中深层块状超稠油油藏、洼59块特深层块状稠油油藏现场试验表明,3种立体开发方式可大幅度增加原油产量、实现油田高效开发。

The Discussion of Tridimensional Development Mode of Reservoir

Tridimensional development concept was put forward and tridimensional development conceptual models for three kinds of reservoirs were established in this paper. By field test, physical simulation and numerical simulation, uniform compaction, vertical gravity action and joint supply action of tridimensional development mechanism for buried hill light oil reservoir, gravity drainage and steam flooding of tridimensional development mechanism for mid-deep massive heavy oil reservoir with interbeds and gravity water drainage and steam flooding of tridimensional development mechanism for special-deep massive heavy oil reservoir were researched. Field application in Liaohe Oilfield show that tridimensional development has improved oil production and recovery obviously, and it is an effective development mode for these reservoirs.