Research And Application Of High-efficiency And Miniaturized Three-phase Separators

Produced liquid of crude oil dehydration process is one of the important contents for oilfield development, the method is based on different produced fluid characteristics and aquifer situations, then take different technologies. With the exploitation of offshore oil and gas fields, the activity block has entered the "tertiary oil recovery stage", the produced fluid contains a lot of surface active agent, polymer, etc. The oil emulsion interfacial film thickness increases, the conductivity and stability enhancement, lead to platform electric dehydrator electric short circuit plate, increase the difficulty that the oil/water separation of produced fluid. Thermal recovery techniques are large-scale promotion, as the sea of the steam generator fuel supply become an urgent problem. After dehydration treatment, moisture content of less than 5% of production Wells can be directly produced fluid for boiler combustion. In this paper, how to development and application of a set of matching efficient device miniaturization of three-phase separator has carried. The main contents are as follows:(1) At the scene of the closely linked to the full research literature at home and abroad and on the basis of production practice, carry out the related research of crude oil dehydration technology; with onshore oilfield and conventional dehydration separator scheme comparison in offshore oil field, has developed a set of meet the requirements for offshore oil field on-site device miniaturization of three-phase separator.(2) To analyze the feasibility and effect of dehydration of equipment, the use of acidic crude oil dehydration experiment was carried out, and by measuring the moisture content after electric dehydration of crude oil, acid content, to verify the practicability of equipment.(3) In order to determine the original moisture content, drying time, dehydration temperature and acid content and other factors on the influence of the oil-water separation efficiency, obtain the best dehydration temperature and drying time parameters, static and dynamic dehydration simulation experiment was carried out.(4) To verify whether the three-phase separator also apply to the aging oil and contain high polymer with crude oil demulsified dehydration processing, using high frequency pulse electric dehydration equipment were a platform in Bohai sea containing polymer emulsion oil sample and aging crude oil sample for electrical simulation experiment, and the experimental results were carefully analyzed This paper developed a set of meet the demand of Bohai sea platform production efficient miniaturization of three-phase separator, mainly is the high frequency rectangular wave pulse technology used electric dehydration technology. The technology is mainly used in high water cut of crude oil and contain high polymer with crude oil demulsified dehydration processing, which can greatly reduce the cost of offshore oil and gas development...