A wellhead blowout protection structure used in groundwater drilling

A technology for protecting structures and groundwater, applied in earth-moving drilling, wellbore/well components, sealing/packing, etc., can solve problems such as affecting the progress of operations, affecting the personal safety of operators, and blowout accidents, and improving stability. , easy to use, easy to maintain and replace

Active Publication Date: 2022-02-11
青海九零六工程勘察设计院有限责任公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings in the prior art that there may be blowout accidents during groundwater drilling, which will not only affect the operation, but also affect the personal safety of operators, and propose a groundwater drilling process Wellhead blowout protection structure used in China

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  • A wellhead blowout protection structure used in groundwater drilling
  • A wellhead blowout protection structure used in groundwater drilling
  • A wellhead blowout protection structure used in groundwater drilling

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0028] refer to Figure 1-7 , a wellhead blowout protection structure used in groundwater drilling, comprising a housing 1 and a base 27 mounted on the bottom of the housing 1, the base 27 is evenly opened with mounting holes, and the top of the inner wall of the housing 1 is placed with a cover 6, and the top of the upper cover 6 extends to the top of the housing 1;

[0029] The inside of the housing 1 is fixedly installed with a support tube 2 for the drill bit to pass through. The two sides of the support tube 2 are symmetrically provided with through holes 28. A rubber core 7 is placed between the top of the support tube 2 and the upper cover 6. The support tube ...

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Abstract

The invention discloses a wellhead blowout prevention protection structure used in the groundwater drilling process, which comprises a shell and a base installed at the bottom of the shell, the base is evenly opened with installation holes, and an upper cover is placed on the top of the inner wall of the shell, and The top of the upper cover extends to the top of the casing; the inside of the casing is fixedly installed with a support tube for the drill bit to pass through, and through holes are symmetrically opened on both sides of the support tube, and a rubber core is placed between the top of the support tube and the upper cover , An oil chamber is opened between the support cylinder and the housing, and a piston is installed in the oil chamber. The present invention can make well water enter the area between the support cylinder and the piston by setting the through hole, the pressure of the well water can push the piston to rise, and the rubber core can be squeezed by the piston to make the rubber core shrink inward And close to the drill bit, so as to achieve the purpose of reducing groundwater ejection, and can reduce the impact of blowout accidents on the operation of the drilling rig and the personal safety of the operators.

Description

technical field [0001] The invention relates to the technical field of groundwater, in particular to a wellhead blowout prevention protection structure used in the process of drilling groundwater. Background technique [0002] Groundwater refers to the water that exists in the rock voids below the ground. In a narrow sense, it refers to the water in the saturated aquifer below the groundwater surface. The groundwater monitoring system relies on the GPRS network, so that the staff can check the water level, temperature and conductivity of the groundwater in the monitoring center. The monitoring management software of the monitoring center can realize remote data collection and remote monitoring, and all the monitored data can be entered into the database to generate various reports and curves, and monitor various data of groundwater in real time, so as to grasp the dynamic changes in time , long-term protection of groundwater. [0003] Blowout accidents may occur when ground...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/06
CPCE21B33/06
Inventor 董高峰罗银飞祁泽学
Owner 青海九零六工程勘察设计院有限责任公司
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