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Well blowout processing device of geothermal system

A treatment device and geothermal technology, which is applied to isolation devices, wellbore/well components, earth-moving drilling, etc., can solve problems such as unsatisfactory treatment effect, and achieve the effects of low cost, good effect and convenient processing.

Inactive Publication Date: 2012-10-31
徐毅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional geothermal blowout treatment method is the direct mud killing method, which uses heavy mud directly poured into the well to kill the well and prevent blowout. not ideal

Method used

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  • Well blowout processing device of geothermal system
  • Well blowout processing device of geothermal system
  • Well blowout processing device of geothermal system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The specific processing method of the water-absorbing plug 5 is as follows:

[0037] 1. Choose a section of high-quality green gang round wood;

[0038] 2. Machining the round wood into a concentric cylinder with a height of 0.6~0.8m and a diameter 10cm larger than the diameter of the surface casing 2;

[0039] 3. One end of the log is processed into a cone with a trapezoidal longitudinal section and a height of 30 cm;

[0040] 4. Divide the cork into two evenly along the longitudinal centerline of the log, and cut it with a wood saw;

[0041] 5. Dig the volume corresponding to the drill pipe 8 along the axial centerline of the log to form a through hole 6 (the two halves are not shown in the figure), and cut out 1 / 2 of each piece to completely fit the drill pipe;

[0042] 6. Surface casing 2 adopts stainless steel casing.

[0043] Then operate according to the above operation steps until the drilling fluid reaches a balanced state, take out the drill pipe 8, close the main wellhea...

Embodiment 2

[0045] It is carried out according to Example 1, but the material of the water-absorbing plug 5 is iron wood, and the rest is the same as in Example 1.

Embodiment 3

[0047] It is carried out according to Example 1, but the material of the water-absorbing plug 5 is oak, and the rest is the same as in Example 1.

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Abstract

The invention discloses a well blowout processing device of a geothermal system. An outlet of a grout pipe is arranged at the lower side of a wellhead of the geothermal system. The well blowout processing device further comprises a surface casing for being arranged at the inner wall of the wellhead of the geothermal system and a water-sucking type plunger for sealing with the inner wall of the surface casing, wherein the upper section of the water-sucking type plunger is a cylindrical body, the surface of the lower section of the water-sucking type plunger is a conical surface which is big in upper part and small in lower part, and a through hole is formed in the axial center of the water-sucking type plunger. When a well blowout accident happens, the water-sucking type plunger and the surface casing are connected in a sealing manner to prevent situation from getting worse to pollute the surrounding environment in the construction field and influence the normal life of local residents, and then heavy mud is grouted into the grout pipe till drilling fluid is balanced, and the grout pipe is closed to finish the blowout processing. The well blowout processing device disclosed by the invention has the advantages of convenience for machining, simpleness in use, high processing efficiency, good effect, low cost, strong practicability and suitability for popularization.

Description

Technical field [0001] The invention relates to a blowout treatment device of a geothermal system, in particular to a blowout treatment device of a geothermal system that can quickly prevent the expansion of the situation. Background technique [0002] Blowout refers to the process in which oil, water or gas blows out of the ground or flows into other formations in the well during drilling, causing an accident. Blowout accidents easily occur during the development of underground energy sources such as oil, natural gas, and geothermal. There are many reasons for blowout, such as complex geological conditions, improper drilling fluid performance adjustment, excessive drilling, failure to inject drilling fluid into the well when drilling is lifted or stopped, poor circulation and heat dissipation of drilling fluid, improper selection of drilling specifications and drilling fluid The circulation time in the well is too long, the viscosity of the drilling fluid is too thick, etc. Wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/06E21B33/068E21B36/00
Inventor 徐毅
Owner 徐毅
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