王诗灏
WANG Shihao

• 1:中国石油辽河油田分公司冷家油田开发公司

摘要(Abstract)：

特深层稠油L4块进入蒸汽吞吐开发后期,油藏进入低产低效开发阶段。针对油藏埋藏深、原油黏度大、提高采收率难度大的难题,开展火驱开发可行性研究。采用油藏工程方法,对比热水驱、蒸汽驱、火驱3种方式开发效果,火驱开发明显好于热水驱和蒸汽驱开发。在此基础上,建立地质模型,采用数值模拟和油藏工程方法进行油藏工程设计。根据油层、隔夹层发育特点,采用2套开发层系、70 m井距正对行列式井网正向干式燃烧进行开发,确定注气压力为3～5 MPa,初期注气强度为200～250 m~3/(d·m),注气强度月递增量为60 m~3/(d·m),最大注气强度为800 m~3/(d·m)。数值模拟和油藏工程计算结果表明,预计火驱阶段采出程度可达26.1%,为同类油藏开发提供借鉴。
Block L4 with ultra-deep heavy oil enters the late stage of cyclic steam stimulation(CSS) development, and the reservoir enters the low-production and low-efficiency development stage. In accordance with the problems of the deep buried depth, high viscosity and EOR difficulty of the oil reservoir, the feasibility of fire flooding was studied. The oil reservoir engineering method was used to compare the developed effects of hot water flooding, steam flooding and fire flooding. The developed effects of the fire flooding are obviously better than those of the hot water flooding and steam flooding. On these bases, the geological model was established, and moreover the numerical simulation and reservoir engineering methods were used for the reservoir engineering design. According to the developed characteristics of the oil layers and interlayers, the reservoirs were developed with two series of strata at 70 m well spacing in forward line-drive well pattern by forward dry combustion. The determined steam injection pressure is to be 3-5 MPa, and the initial injection intensity is 200-250 m~3/(d·m), the monthly increase of the injection intensity is 60 m~3/(d·m), and the maximum injection intensity is 800 m~3/(d·m). The numerical simulation and reservoir engineering calculated results show that the expected ratio of the total oil produced to OOIP in the fire-flooding stage can reach 26.1%, which can provide the reference for the development of the similar oil reservoirs.

关键词(KeyWords)： 稠油油藏;火驱;开发方式;油藏工程;注采参数
heavy oil reservoir;fire flooding;development mode;oil reservoir engineering;injection-production parameter

Abstract:

Keywords:

基金项目(Foundation): 国家科技重大专项“大型油气田及煤层气开发”之子课题“辽河、新疆稠油/超稠油开发技术示范工程”(2016ZX05055);; 中国石油天然气集团公司重大科技专项“稠油方式转换中后期稳产关键技术研究与试验”(2017E-1604)

作者(Author): 王诗灏
WANG Shihao

DOI: 10.19597/J.ISSN.1000-3754.201906022

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