曙光地区开发地质特征及开发效果评价

发布时间：2018-04-22 14:42

本文选题：地质特征 + 稠油　；参考：《东北石油大学》2017年硕士论文

【摘要】：曙光油田是开采50年的老油田,从1983年6月曙1-7-5块曙1-3532井稠油蒸汽吞吐实验获得成功开始,在曙1-7-5块、杜80块、杜84块陆续扩大稠油蒸汽热采规模,目前多数已进入高轮次吞吐阶段,产量递减大,周期油汽比低,有效期短,为了提高现开采方式下挖掘油藏动用程度的潜力,合理配置注汽量、提高吞吐开发经济效益,对该地区开发地质特征、目前吞吐阶段的热采规律、吸汽状况以及地层压力变化等开展了研究。储集层的单层厚度影响油藏开发效果的重要因素,依据储集层单层厚度将曙光地区稠油油藏类型划分为块状底(顶)水油藏、多油组厚互层油藏、多油组薄互层油藏、薄-厚互层油藏、潜山底水油藏,并结合地层构造特点、沉积特征、储层特征、油层分布、流体性质、渗流特征、储层分布等特征对各类油藏进行了综合研究,筛选出普通稠油油藏中具有代表性的典型油藏为研究对象,对其吞吐生产特征、吞吐规律、开发过程中的影响因素和预防措施进行研究。最后综合对比分析现有开采模式下的阶段产油、稳产期年限、递减速度、可采储量采出程度、现阶段标定采收率等多种指标,运用指数递减法、周期生产规律法、递减模型三种产量预测方法,对普通稠油的杜66块等、特稠油的曙1-7-5块、超稠油的杜84等区块的周期生产规律、阶段开发指标变化规律、储量动用状况、油藏地层压力变化规律、采收率评价等指标进行研究,并客观的进行开发效果评价和开发趋势预测。
[Abstract]:Shuguang Oilfield is an old oilfield with 50 years of production. From the successful steam huff and puff experiment of Shu1-7-5 block Shu1-3532 well in June 1983, steam thermal recovery scale of heavy oil has been expanded in Shu 1-7-5 block, du 80 block and du 84 block. At present, most of them have entered the stage of high cycle huff and puff, with large production decline, low cycle oil / steam ratio and short period of validity. In order to improve the potential of exploiting reservoir production degree under the present production mode, reasonable allocation of steam injection capacity and economic benefit of huff and puff development are obtained. In this paper, the development geological characteristics, thermal recovery law, steam absorption condition and formation pressure change of the area during huff and puff stage are studied. According to the single layer thickness of reservoir, the heavy oil reservoir type in Shuguang area is divided into block bottom (top) water reservoir, multi-oil group thick interbed reservoir, multi-oil group thin interbed reservoir. Combined with the characteristics of stratigraphic structure, sedimentation, reservoir, reservoir, reservoir distribution, fluid properties, percolation and reservoir distribution, various types of reservoirs have been comprehensively studied, such as thin-thick interbedded reservoirs, buried hill bottom water reservoirs, and so on. Typical typical reservoirs in common heavy oil reservoirs are selected as research objects. The production characteristics, huff and puff rules, influencing factors in development process and preventive measures are studied. Finally, comprehensive and comparative analysis of the stage oil production, stable production period, decline speed, recovery degree of recoverable reserves, calibration of recovery factor and so on under the existing production mode, using exponential decline method, periodic production law method, etc. Three production forecasting methods of decline model, such as du 66 block of ordinary heavy oil, Shu 1-7-5 block of super heavy oil and du 84 block of super heavy oil, are used to predict production cycle, change law of stage development index, reserve production condition, etc. Reservoir formation pressure change law, oil recovery evaluation and other indicators are studied, and objective evaluation of development results and development trend prediction.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE34;P618.13

【参考文献】