Water Seal Condition Analysis For Water Sealed Underground Petroleum Storage Caverns In Cheng Ao Hou Shan In Ning De

From the current stage of the international situation, we can see that every country pay more and more attention to the oil energy. At present our country are implementing a reserving project about oil energy, and water sealed underground petroleum storage caverns is a general international reserve method. As a form of oil storage, comparing the ground storage tank, water sealed underground petroleum storage caverns has a lot of advantages. Firstly, water sealed underground petroleum storage caverns is safer than the ground storage tank. Huang dao storage tank explosion and the water sealed underground petroleum storage caverns is found in good condition, not only such, but also water sealed underground petroleum storage caverns can reduce instability in the safety factor in war period.Secondly, the operation cost of water sealed underground petroleum storage caverns is less than the ground storage tank. The construction of water sealed underground petroleum storage caverns has certain location restrictions. For example, water sealed underground petroleum storage caverns must be in intact rock or relatively intact rock and under ground water level. National petroleum reserve center plans to build a5million m3water sealed underground petroleum storage caverns in fu jian cheng ao hou shan area.This Paper do the feasibility study combined with the engineering. Through the various information into the region's geological water yavin conditions, and then the simplified and determine the parameters used numerical simulation, and then establish numerical analysis model, and analysis of the construction of the underground structure of various forms of fluid-solid coupling. This paper mainly to the stress and the strain contrast about with and without the seepage flow, the water effect of water seal, the layout form of the water curtain system, the water injection pressure of the water curtain system, storage pressure of oil storage, the seepage flow of water sealed underground petroleum storage caverns, The height of the water curtain system above in the height of the underground structure oil and so on.The following comparative analysis about water sealed underground petroleum storage caverns is done in this paper.1. The stress and strain are compared in the seepage and no seepage case. The differences of the stress and strain in different case reduces away from cavern. 2. Two kind of arrangement about the water curtain system and the cavity axis direction are compared. The different betwen influence degree of two kind of arrangement is very small. Considering the construction of water sealed underground petroleum storage caverns, we chose the form ofcavity axis direction and the water curtain system of vertical injection hole direction decorate.3. The different water injection pressure of the water curtain system are analyzed. The water injection pressure of the water curtain system is designated as0.8MPa.4. The different storage pressure of oil storage of the water sealed underground petroleum storage caverns are analyzed. The storage pressure of oil storage of the water sealed underground petroleum storage caverns is designated as0.15MPa.5. The different height of the water curtain system above the underground structure oil are analyzed. The height of the water curtain system above the underground structure oil is designated as20m.This paper provides some reference data to the construction of the water sealed underground petroleum storage caverns in cheng ao hou shan. At the same time, this paper provide the reference to the data processing of the water sealed underground petroleum storage caverns and to some problems of the numerical analysis about the water sealed underground petroleum storage caverns.