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An easy-to-detect gas drive oil production structure

A technology of gas drive and tubing, applied in the field of gas drive oil recovery structure

Active Publication Date: 2016-06-15
唐坤喜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the nozzle in this application is located in the middle of the gas mixing pipe, so that measuring instruments such as thermometers and pressure gauges cannot enter the oil layer from the pipeline for corresponding detection

Method used

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  • An easy-to-detect gas drive oil production structure
  • An easy-to-detect gas drive oil production structure

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Such as figure 1 As shown, the gas-driven oil recovery structure that is easy to detect in the present invention includes at least a gas-driven jet pump composed of a gas mixing pipe 6, an oil pipe 7 and a casing 5. The top of the gas-driven jet pump communicates with a mounting flange 8 and a packing seat. There are pipelines, the structure of the packing seat and the pipeline is the same as that of the patented gas drive oil production method previously applied for, and will not be described in detail here.

[0019] The oil pipe 7 of the air-driven jet pump is covered with a gas mixing pipe 6, and the oil pipe 7 is covered with a casing 5. The gas mixing pipe 6 has a throat 4, and a nozzle 3 is located below the throat 4. The throat 3 is an annular triangular protrusion structure. Two or more nozzles 3 are distributed below the pipe 4, and each nozzle 3 is distributed on the inner wall of the gas mixing pipe 6 with an upward slope.

[0020] Two or more nozzles 3 are ...

Embodiment 2

[0024] The upward inclination angle of the nozzle 3 is the same as the inclination angle of a hypotenuse of the triangular throat pipe 4 . Usually, the angle between the hypotenuse at the upper end of the annular throat pipe 4 and the inner wall of the gas mixing pipe 6 is 30-40 degrees, so the upward angle of the nozzle 3 is also 30-40 degrees, and the outlet end extension line of the nozzle 3 The direction is located above the hypotenuse of the opposite throat pipe 4, such an angle can ensure that the natural gas sprayed from the nozzle 3 can smoothly enter the area above the throat pipe 4, forming a lower low-pressure area.

Embodiment 3

[0026] Such as figure 2 As shown, four nozzles 3 are distributed under the throat pipe 4, and the four nozzles 3 are distributed on the inner wall of the gas mixing pipe 6 in such a way that each equally divides a 90-degree circumferential angle. The diameter of the middle through hole formed by the protrusion of the pipe 4 is 35 mm, and the thermometer or pressure gauge with a diameter of 32 mm can pass through the middle through hole formed by the protrusion of the throat pipe and the through holes formed between the nozzles and extend to the oil layer at the bottom of the well. corresponding detection.

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Abstract

The invention relates to the field of oil field oil extraction, in particular to a gas drive oil extraction structure convenient to detect. The gas drive oil extraction structure is characterized in that a throat is in an annular triangle protruding structure, two or more than two nozzles are distributed below the throat, the nozzles are distributed on the inner wall of a gas mixing pipe in an up-tilting mode, and the nozzles in up-tilting structures guarantees the fact that natural gas output at the nozzle ends can smoothly enter the throat. The diameter of a middle through hole formed between the nozzles is larger than that of a middle through hole formed by protruding of the throat, and accordingly a pressure gage, a thermometer and other measuring equipment can extend to an oil layer at the bottom of a well for corresponding detection from the middle through hole of the throat and a gap between the nozzles, and the up-tilting structures of the nozzles guarantee that the natural gas output at the nozzle ends can enter the throat smoothly.

Description

technical field [0001] The invention relates to the field of oil recovery in oil fields, in particular to a gas drive oil recovery structure that is easy to detect. Background technique [0002] Since the oil recovery benefit of gas flooding has been greatly improved compared with the previous water and chemical agent water recovery, it is gradually popularized in oilfields, as shown in the patent of gas flooding oil recovery method that the applicant previously applied for, application number: 200310105891.9, gas Oil flooding uses gas as the power fluid to pass through the jet pump to generate a vacuum or low-pressure area, so that the well fluid flows to the low-pressure area. The nozzle converts the pressure energy of the high-pressure power gas flowing through it into the kinetic energy of the high-speed flow gas, and after the nozzle, the throat A vacuum area or a low-pressure area is formed between the pipes, and the high-speed flowing low-pressure gas and the product ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/18
Inventor 唐坤喜
Owner 唐坤喜