洼16断块区分层开发试验方案研究

发布时间：2018-01-23 07:01

本文关键词： 精细油藏描述分层开发复杂断块提高采收率方案设计　出处：《东北石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：大洼油田断层发育、构造破碎、纵向含油井段长。在20多年的注水开发中始终采用一套层系,逐层上返、大段合注合采的方式,分注级别低,造成层间干扰严重,注采系统不完善,储量动用程度不均衡,已进入低速低效开发阶段。近年来,通过侧钻井、调补层及清5块深部调驱试验等措施在油田见到了较好效果,证明该区采收率仍具有提高空间。为有效改善开发效果,实现单砂体经济有效开发,有必要在大洼油田洼16块开展分层开发试验方案研究,以进一步提高大洼油田采收率,并为辽河油田中高渗复杂断块油藏提高采收率探索出一条新的开发途径。本论文首先进行了断块的精细油藏描述,它是以沉积学、构造地质学、石油地质学理论为基础,应用各种数学和计算机手段,定性定量的描述三维空间中的油藏模型、外部几何形态、规模大小、油藏内部结构、储层参数变化和流体分布。然后通过应用计算机建立油藏地质模型和油藏工程模型,以及对各种动静资料的综合分析,研究掌握油水的变化规律,并对油藏的水驱开发效果进行了评价。同时提出了分层开发的概念和标准,通过在断块区内进行研究,论证其分层开发的物质基础和可行性,并进行多元分层开发的潜力评价,以充分挖掘油藏出油潜力,了解剩余油分布。最后针对性的制定了合理可行的挖潜调整方案。最终方案为:部署调整井5口,其中直井2口,水平井3口,调驱试验井组2个,预计措施层位分别提高采收率4%和2.3%。本课题的研究对改善辽河老区复杂断块的开发效果具有积极的意义,对于分层开发的规模实施也具有重要的借鉴和指导价值。
[Abstract]:Dawa Oilfield has developed faults, broken structures and long longitudinal oil wells. In more than 20 years of water injection development, it has always adopted a set of layers, layer by layer up and back, large section combined injection and production, low injection grade. The interlayer interference is serious, the injection-production system is not perfect, the reserve production degree is not balanced, and has entered the stage of low speed and low efficiency development. In recent years, through side drilling. In order to improve the development effect and realize the economic and effective development of single sand body, the measures such as adjusting and filling layer and deep adjusting and flooding test of Qing5 block have good effect in oil field, which proves that the oil recovery still has room for improvement in this area. It is necessary to develop stratified development test scheme in block WA 16 of Dawa Oilfield in order to further improve oil recovery in Dawa Oilfield. A new way to improve oil recovery in middle and high permeability complex fault block reservoir of Liaohe Oilfield has been explored. Firstly, the fine reservoir description of fault block has been carried out in this paper, which is based on sedimentology and structural geology. Based on the theory of petroleum geology, using various mathematical and computer methods, the reservoir model, external geometry, size and internal structure of the reservoir are described qualitatively and quantitatively. Then the reservoir geological model and reservoir engineering model are established by computer, and the comprehensive analysis of all kinds of dynamic and static data is made to study and master the variation law of oil and water. At the same time, the concept and standard of stratified development are put forward, and the material basis and feasibility of stratified development are proved by studying in fault block area. In order to fully exploit the potential of oil production and understand the distribution of remaining oil, a reasonable and feasible adjustment plan of tapping potential is worked out. The final plan is: deployment of 5 adjustment wells. There are 2 straight wells, 3 horizontal wells and 2 test wells. It is estimated that the measure horizon will increase oil recovery by 4% and 2.3 respectively. The research of this subject has positive significance to improve the development effect of complex fault block in Liaohe old area. It also has important reference and guiding value for the scale implementation of stratified development.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE34

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