Deep sea thickened oil acquisition equipment

Abstract

The invention discloses deep sea thickened oil acquisition equipment. By means of the deep sea thickened oil acquisition equipment, viscosity reduction processing can be conducted on thickened oil of higher viscosity in the oil production process, so that the thickened oil flowability is improved, and it can be guaranteed that the thickened oil reservoir is acquired smoothly. The deep sea thickened oil acquisition equipment comprises a main oil pipe, a hollow oil pumping rod and an oil wellhole. The oil wellhole is provided with a water isolating pipe. The lower end of the main oil pipe stretches into the oil wellhole. The main oil pipe is internally provided with a screw pump. A main working screw of the screw pump is connected with the oil pumping rod. The lower portion in the oil wellhole is provided with a sand control sieve pipe. The top of the sand control sieve pipe is provided with a sieve pipe oil outlet. The sieve pipe oil outlet is communicated with an oil inlet of the screw pump. The oil pumping rod is internally provided with a cable. One end of the cable is connected with a power source. The deep sea thickened oil acquisition equipment has the advantages that the thickened oil can be reasonably heated to lower the viscosity of the thickened oil, and the thickened oil is acquired beneficially; the carbon dioxide gas and vapor can be fed into the equipment to conduct viscosity reduction on crude oil about to rise or in the rising process.

Description

Technical field [0001] The invention belongs to the technical field of oil reservoir exploitation, and particularly relates to a deep-sea heavy oil collection device. Background technique [0002] Heavy oil reservoirs are widely distributed in the world. According to statistics, the geological reserves of heavy oil (including bitumen) reservoirs are at least 4 times the proven reserves of conventional crude oil, and optimistically, they can even exceed 6 times. With people's exploration of deep water, deep water heavy oil has received more and more attention, and its exploitation and development activities have also been carried out all over the world. [0003] However, the depth of the deep-water oil field is generally between 500 and 2500 meters. Due to its deeper depth and other factors, a low-temperature area will be formed on the seafloor. In addition to the temperature sensitivity of heavy oil, and its own high viscosity, it will be in the low-temperature area. The flow is d...

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Problems solved by technology

[0003] However, the water depth of deep-water oil fields is generally between 500 and 2,500 meters. Due to factors such as its deep depth, a low-temperature area will be formed on the seabed. In addition, the temperature sensitivity of heavy oil and its own high viscosity, so in the low-temperature area. Difficulty flowing, or even gradually losing fluidity, so that the oil well cannot maintain normal production

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