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Safe explosion-proof unloading system of oil and gas well

A technology of explosion-proof discs and oil pipes, which is applied in safety devices, dust prevention, fire prevention, etc., and can solve problems such as imperfect technology and insufficient supporting measures

Inactive Publication Date: 2016-05-11
赵金岷
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the domestic air injection safety control technology and related supporting measures are not perfect.
[0004]However, neither domestic nor foreign technology can guarantee the complete elimination of underground explosion accidents, and once an accident occurs, the technology to take countermeasures is very poor Complete

Method used

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  • Safe explosion-proof unloading system of oil and gas well
  • Safe explosion-proof unloading system of oil and gas well
  • Safe explosion-proof unloading system of oil and gas well

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1 Explosion-proof unloading device 3 on the well

[0028] See figure 1 , 2 , explosion-proof discharge device 3 on the well, which includes: explosion-proof plate 31, explosion-proof pressure relief device 32, casing tee 11 and / or tubing tee, and the explosion-proof pressure relief device 32 is cylindrical and the bottom is hemispherical , the top is provided with a cylinder cover 33, the cylinder cover 33 is a soft waterproof material, such as rainproof cloth, plastic film; the underside of the explosion-proof pressure relief device 32 is provided with a burst-proof disk interface 321, which is connected with the sleeve tee 11 through a flange, The explosion-proof plate 31 is installed between the two flanges, the casing tee 11 and / or the tubing tee are arranged below the Christmas tree, and the casing suspension 5 is above; the explosion-proof plate 31 and the tee 11 are also provided with valve 12;

[0029] Also be provided with energy-absorbing devic...

Embodiment 2

[0030] Embodiment 2 Downhole explosion-proof unloading device 4

[0031] See Figure 1-6 , the downhole explosion-proof unloading device 4, which is installed on the outer periphery of the tubing 2 from the bottom of the casing suspension 5 to the top of the oil production pump 7, and an explosion-proof barrier 41 is installed in sections, and each section of the explosion-proof barrier 41 is fixed on the tubing through a clamp 42. Oil pump end 7 to casing suspension end 5, non-metallic fire retardant material with a length of 5-15 meters, explosion-proof barrier 41 of metal mesh fire retardant material with a length of 15-25 meters, metal mesh fire retardant material explosion-proof barrier group 43 , non-metallic mesh fire-blocking material explosion-proof barrier group 44, ..., non-metallic mesh fire-blocking material explosion-proof barrier group 44, casing suspension 5 end is the explosion-proof barrier 41 of metal mesh fire-blocking material with a length of 5-15 meter...

Embodiment 3

[0034] Example 3 Oil and gas well safety explosion-proof unloading system

[0035] See Figure 1-6 , oil and gas well safety explosion-proof unloading system, which includes: downhole explosion-proof unloading device 4, uphole explosion-proof unloading device 3, uphole explosion-proof unloading device 4; The lower part, the upper part of the casing suspension 5, is connected with the explosion-proof discharge device 3 on the well; it is used for the explosion-proof pressure relief of the casing 1;

[0036] The explosion-proof unloading device 3 on the well is the explosion-proof unloading device 3 on the well described in Embodiment 1;

[0037] Described downhole explosion-proof unloading device 4 is downhole explosion-proof unloading device 4 described in embodiment 2;

[0038] The oil and gas well safety explosion-proof unloading system also includes an explosion-proof unloading device 3 on the well for explosion-proof and pressure relief of the tubing 2, and the tubing ...

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Abstract

The invention discloses a safe explosion-proof unloading system of an oil and gas well. The safe explosion-proof unloading system comprises a down hole explosion-proof unloading device and a ground explosion-proof unloading device. The ground explosion-proof unloading device comprises an explosion-proof piece, an explosion-proof pressure relief device, a casing pipe tee joint and / or oil pipe tee joint, according to the down hole explosion-proof unloading device, explosion-proof barriers are added in a segmented mode to the position, under a casing pipe hanger and above an oil production pump, of the periphery of an oil pipe and in a casing pipe; when the down hole oil well is under safe pressure, the explosion-proof piece is exploded, an energy absorption partition plate of the explosion-proof pressure relief device absorbs energy step by step, and gas is safely unloaded; the explosion-proof barriers disperse the gas and generate a bottleneck effect, and gas pressure is lowered step by step from bottom to top; if deflagration occurs in a mining area, the explosion-proof barrier play the role of fire retardance, and gas is safely unloaded from the explosion-proof pressure relief device; the pressure of the mining area is relieved, time is won for further taking such emergency measures as waterflooding stopping and well shutdown, and the loss is lowered to the minimum.

Description

technical field [0001] The invention belongs to the technical field of petroleum exploitation, and in particular relates to an explosion-proof unloading device on a well, an explosion-proof unloading device under a well and an explosion-proof unloading system for oil and gas well safety. Background technique [0002] At present, more and more medium and light oil fields in my country have entered the late stage of water injection production, and the average recovery rate is lower than 35%, which has great potential for tertiary oil recovery or enhanced oil recovery. In addition, many high-temperature, high-pressure, low-permeability light oil fields are difficult to inject water and have low recovery factors. These oil fields may become the target projects of air injection oxidation technology. In addition, with the intensification of research on in-situ oil shale mining technology in my country, the requirement for downhole air injection is also imminent. However, the inje...

Claims

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Application Information

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IPC IPC(8): E21F5/00
CPCE21F5/00
Inventor 赵金岷魏国铭
Owner 赵金岷
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