透镜状水驱气藏一体化开发中的综合油藏管理

透镜状水驱气藏是一种不同于中深层构造气藏的零散气藏。为了获得最佳的经济效益,实施了不同开发阶段的综合油藏管理。在开发初期实施了以地质综合研究为基础、“亮点”、“AVO”等为核心的气藏地震勘探描述、以气藏工程研究为主要手段的滚动勘探开发一体化技术,以提高钻井成功率。在开发中期,为了延长气田稳产期则主要是加强气藏动态分析,适时进行开发调整。而进入开发后期,则应实行气井的分类管理,以提高采收率为目的,以研究剩余气的分布规律为突破点,充分利用地质及动态资料实行精细气藏描述。在开发过程中,始终从气层保护出发,探索研究配套工艺措施,目的是提高气井产能,延长气田无水采气期。综合油藏管理的应用,有效地提高了透镜状水驱气藏的最终采收率,大大提高了气藏的开发效益。同时,对其它类型气藏的开发也具有一定的借鉴意义。

INTEGRATED RESERVOIR MANAGEMENT DURING OVERALL DEVELOPMENT OF LETICULAR WATER-DRIVE GAS RESERVOIRS

Lenticular water-drive gas reservoir is a type of scattered reservoir different from deep mid-sized structural ones. In order to acquire maximal economic benefit, integrated reservoir managements are carried outtargeting various development stages. Progressive exploration and development is put in practice during initial phase, based upon gas reservoir characterization and gas reservoir engineering research as major measure, to enhance drilling success ratio. When entering production mid-stage, performance analysis should be strengthened, and development adjustment should be conducted timely based on available data so as to extend stable production period. And that in the course of late period, management of gas wells should be classified, and fine reservoir characterization is carded into effect fully utilizing geological and performance data, regarding research of distribution rules of remaining gas as breakthrough point. During production, all-process gas formation protection is paid much attention to all the time, and an overall set of technological production measures are explored targeting high gas well deliverability. The application of integrated reservoir management has effectively improved ultimate recovery factor of the reservoir, as well as development benefit. And it could provide guidance for other type of gas reservoir at the same time.