大庆西部外围低产区块降温集输及处理方法研究

发布时间：2018-06-29 09:09

本文选题：低产区块 + 降温集输　；参考：《东北石油大学》2015年硕士论文

【摘要】：大庆西部外围油田大多为低产低渗透油田,原油物性差,单井产量低,油田分散,单位产能建设投资高,集输能耗大,约有80%的天然气消耗在油气集输上。所以,采取低温集输技术节能潜力很大,有必要针对大庆西部外围低产区块的实际情况,开展低产油田降温集输及处理方法研究。为了开展低产油田降温集输及处理方法研究,必须首先明确各个油田区块影响集输特性的含水原油的性质和变化规律,为此,结合大庆西部外围低产区块原油物性、地理条件和生产现状,开展了原油降温集输工艺的相关室内实验。从12个油田区块和5个联合站取得了原油和产出水样品,实验测定了不同含水条件下的原油的流变特性和黏温特性,可为各个区块原油集输的最低温度和最佳集输流速的确定提供可靠依据;测定了各个区块原油的乳化特性,确定油水乳状液的转相点,从而确定出掺水集输的最低掺水量;通过原油破乳脱水实验,优选与各个区块原油性质相对应的破乳剂,并与电脱水工艺结合,测定了不同脱水参数下的处理效果,确定了脱水制度,可为采出液的低温处理提供依据,为制定出适合于大庆西部外围低产区块的低温集输管理制度提供理论依据,达到节能降耗的目的。
[Abstract]:Most of the peripheral oilfields in the western part of Daqing are low-yield and low-permeability oilfields, with poor physical properties of crude oil, low single well production, dispersed oil fields, high investment in unit productivity construction, high energy consumption of gathering and transportation, and about 80% of natural gas is consumed in oil and gas gathering and transportation. Therefore, low temperature gathering and transportation technology has great potential for energy saving. It is necessary to carry out research on cooling gathering, transportation and treatment methods of low yield oil fields in accordance with the actual situation of low yield blocks in the western periphery of Daqing. In order to study the methods of cooling gathering and transportation in low-yield oilfields, it is necessary to first make clear the properties and variation laws of water-cut crude oil which affects the gathering and transportation characteristics of each oilfield block. Therefore, combined with the physical properties of crude oil in the low-yield blocks in the western periphery of Daqing, The related laboratory experiments of crude oil cooling gathering and transportation technology were carried out under geographical conditions and production status. Crude oil and produced water samples were obtained from 12 oil field blocks and 5 joint stations. The rheological and temperature properties of crude oil under different water cut conditions were measured experimentally. It can provide reliable basis for the determination of the minimum temperature and the best gathering and transporting velocity of crude oil in each block, determine the emulsifying characteristics of crude oil in each block, and determine the phase transition point of oil-water emulsion, so as to determine the minimum amount of water mixed in water gathering and transportation. Through the demulsification and dehydration experiment of crude oil, the demulsifier corresponding to the properties of crude oil in each block was selected, and combined with the electric dehydration process, the treatment effect under different dehydration parameters was determined, and the dehydration system was determined. It can provide the basis for the low-temperature treatment of the produced liquid, and provide the theoretical basis for establishing a low-temperature gathering and transportation management system suitable for the low-yield block in the western periphery of Yu Daqing, so as to achieve the purpose of saving energy and reducing consumption.
【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】：TE866

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