冀中坳陷大5区块改建地下储气库可行性研究

发布时间：2018-12-30 17:57

【摘要】：含水层型储气库是仅次于枯竭油气藏型储气库的另一种大型地下储气库形式,含水层建库的技术难度、安全风险、项目投资和建造周期都要高于枯竭气藏建库,目前国内还没有含水层储气库建库先例,非常缺乏必要的理论和实践经验,而盖层的封闭能力和储气库圈闭的完整性是库址选择、储气库设计的基本前提和理论基础。本文以大5区块为研究对象,紧密围绕盖层密封性能、储层储集性能,圈闭有效性三个核心问题,开展地质特征、气藏工程、室内实验、现场试验四个层面的研究,评价含水层建库的可行性,形成以下成果和认识:归纳总结盖层密封性影响因素,初步形成盖层密封性评价标准,并利用地质、动态、实验手段,对大5区块泥岩盖层密封性进行评价;在室内实验、产能测试的基础上,对储层的储集性能、渗流特征进行评价;研究储层物性下限确定方法,并借鉴常规油气中的排驱压力法、最小吼道半径法,初步确定大5区块水层建库的物性下限;利用气藏工程理论计算方法和产水指数方法,对大5区块的产气能力进行了初步评价;确定建库参数,进行了注采井网部署。通过本文研究对国内含水层储气库建设具有一定推导作用,研究结果为含水层储气库的选址、设计、密封性评价和合理注采参数的确定提供了科学依据。
[Abstract]:Aquifer type gas storage is another type of large underground gas storage after depleted oil and gas reservoir. The technical difficulty, safety risk, project investment and construction period of aquifer reservoir are higher than those of depleted gas reservoir. At present, there is no precedent for the establishment of aquifer gas storage in China, which lacks the necessary theoretical and practical experience. The sealing ability of cap bed and the integrity of gas storage trap are the basic premise and theoretical basis of reservoir location selection and design of gas storage. In this paper, three core problems, including sealing performance of caprock, reservoir performance and trap effectiveness, are closely surrounding the three core problems, which are geological characteristics, gas reservoir engineering, laboratory experiments and field tests. In order to evaluate the feasibility of aquifer reservoir construction, the following achievements and understandings have been formed: the factors affecting the sealing of the cap bed are summarized, the evaluation criteria for the seal property of the cap bed are preliminarily formed, and the geological, dynamic and experimental means are used, The seal property of mudstone caprock in block Da-5 is evaluated. On the basis of laboratory experiment and productivity test, the reservoir performance and percolation characteristics are evaluated. The method of determining the lower limit of reservoir physical properties is studied, and the lower limit of physical properties of water reservoir in Da-5 Block is preliminarily determined by using the conventional oil and gas displacement pressure method and the minimum channel radius method for reference. Based on the calculation method of gas reservoir engineering theory and the method of water production index, the gas production capacity of Da-5 block is preliminarily evaluated, and the parameters of building reservoir are determined, and the injection-production well pattern is arranged. The research in this paper can be used to deduce the construction of domestic aquifer gas storage, and the research results provide scientific basis for the location, design, sealing evaluation and reasonable injection and production parameters determination of aquifer gas storage.
【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】：TE972.2

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