Solid chemical paraffin control device for oil field well with gas-oil ratio larger than 80
A technology of oil-gas ratio and anti-wax, which is applied in wellbore/well parts, cleaning equipment, earthwork drilling and production, etc. It can solve the problems of broken anti-wax agent, high pressure of oil layer, and destruction of solid anti-wax agent
Inactive Publication Date: 2016-11-09
XI'AN PETROLEUM UNIVERSITY
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Problems solved by technology
The oil-gas ratio is 80, which means that the oil well produces 1 cubic meter of crude oil accompanied by 80 cubic meters of natural gas, and the pressure of the oil layer is relatively high. This kind of oil-gas mixture will often puncture the metal sealing seat on the deep well pump out of the strip groove, seriously damaging the solid anti-wax If the anti-wax agent is used, it will cause the anti-wax agent to be broken, dropped, dropped, and the chip will be stuck in the pump, and the filter will be blocked, so that the oil well cannot work normally.
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[0023] The present invention will be further described below in conjunction with the accompanying drawings.
[0024] see as Figure 1-Figure 5 As shown, the technical solution adopted in this specific embodiment is: it includes the wax-proof pipe body 1; the wax-proof pipe body 1 is composed of the outer tube 2, the central tube 3 and the wax-proof block 4; the inner sleeve of the outer tube 2 A central pipe 3 is provided, and an anti-wax block 4 is provided in the annular space between the central pipe 3 and the outer pipe 2; several holes 5 are evenly distributed on the pipe wall of the central pipe 3.
[0025] The outer diameter of the outer tube 2 is 89mm, the inner diameter is 76mm, and the length is 4000mm.
[0026] The outer diameter of the central tube 3 is 50-38mm, the inner diameter is 42-30mm, and the length is 3930mm.
[0027] The diameter of the hole 5 is 6-12mm.
[0028] The upper and lower ends of the central pipe 3 are connected with the plugs 7 at the upper...
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Abstract
The invention discloses a solid chemical paraffin control device for an oil field well with gas-oil ratio larger than 80 and relates to the technical field of oil field development. The device comprises a paraffin control tube body, wherein the paraffin control tube body is composed of an outer tube, a center tube and a paraffin control block, the center tube is sleeved with the outer tube, the paraffin control block is arranged in an annulus portion between the center tube and the outer tube, and a plurality of holes are evenly distributed in the wall of the center tube. The device overcomes various special conditions underground, a designed paraffin control period is realized, impact on the paraffin control tube by high-pressure oil and gas flow is overcome, and the production efficiency of the oil well is improved.
Description
technical field [0001] The invention relates to the technical field of oilfield development, in particular to a solid chemical paraffin control device for oilfield oil wells with an oil-gas ratio greater than 80. Background technique [0002] Downhole solid anti-wax technology in oil wells in oil fields is a commonly used technology that has been applied for nearly 40 years. The anti-wax block and crude oil flow contact and dissolve, and the wax anti-wax molecules are continuously released. This technology has been continuously developed and improved, and the effect of wax protection has been continuously improved. In recent years, oilfields with high oil-gas ratio have emerged continuously, and the number of oil wells with high oil-gas ratio has increased year by year. The oil-gas ratio is 80, which means that the oil well produces 1 cubic meter of crude oil accompanied by 80 cubic meters of natural gas, and the oil layer pressure is relatively high. This kind of oil-gas m...
Claims
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Patent Timeline
Login to View More IPC IPC(8): E21B37/06
CPCE21B37/06
Inventor 高永利刘华丽
Owner XI'AN PETROLEUM UNIVERSITY