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Inclinable experiment well-mouth sealing device

A sealing device and experimental technology, used in sealing/isolation, flushing wellbore, wellbore/well components, etc., can solve the problem of large volume of wellhead sealing device, and achieve the effect of preventing accidents and increasing service life

Inactive Publication Date: 2014-08-13
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wellhead sealing device used in on-site drilling is bulky and heavy, which cannot meet the needs of the drilling experiment platform to drill inclined wells at different angles from the wellhead

Method used

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  • Inclinable experiment well-mouth sealing device
  • Inclinable experiment well-mouth sealing device
  • Inclinable experiment well-mouth sealing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] According to the drawings, a tiltable experimental wellhead sealing device is composed of bare drill pipe, sealing bushing, support ring, pressure ring, flange, O-ring, wellbore, arc base, foundation, and arc support Seat connection block, arc-shaped support seat, guide rail, guide rail connection support seat, side ears, and liquid return channel. The upper part of the light drill pipe 1 is connected with the faucet on the gantry, and the lower part is connected with the drill pipe; the sealing bush 3 passes through the flange. Threaded connection, the flange has a shoulder to meet the axial positioning of the sealing bush; the pressure ring 11 is fixed on the lower end of the sealing bush 3 by screws, and the sealing ring b5, the washer a6, the sealing ring c7, the washer b8 and the sealing ring d9 form a dynamic The sealing ring group, the dynamic sealing ring group is fixed between the light drilling rod 1 and the sealing bushing 3 through the pressure ring 11, the s...

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Abstract

The invention relates to an inclinable experiment well-mouth sealing device for a drilling experiment platform. The technical scheme is as follows: a sealing bush is in threaded connection with a flange, and the flange is provided with a ledge capable of meeting the axial location of the sealing bush; a press ring is fixed at the lower end of the sealing bush by a screw, a movable sealing ring group is fixed between a polished drill rod and the sealing bush by the press ring, a support ring and the ledge of the sealing bush, and the movable sealing ring group is in a compacted state to realize lower movable sealing between the polished drill rod and the sealing bush; the lower end of the flange is fixed together with a well shaft and an arc-shaped base by screws; the arc-shaped base is arranged on an arc-shaped support seat; a through hole in a side lug on the arc-shaped base is fixed together with a through hole in a guide rail by a screw, and the guide rail is fixed together with a guide rail connection support seat by a connection screw. The inclinable experiment well-mouth sealing device disclosed by the invention can be used for experiment well drilling at different angles, and plays the roles of well-mouth blowout prevention and well-mouth sealing.

Description

technical field [0001] The invention relates to an experimental well head sealing device used for a tiltable drilling experiment platform. Background technique [0002] The wellhead sealing device used in field drilling is generally a wellhead sealing device composed of annular blowout preventer, ram blowout preventer and rotary blowout preventer. This wellhead sealing device is used to close the wellhead during oil testing, well workover, well completion and other operations to prevent blowout accidents. The wellhead sealing device used in on-site drilling is bulky and heavy, which cannot meet the needs of the drilling experiment platform to drill inclined wells at different angles from the wellhead. The drilling test platform needs to drill inclined wells at different angles due to its own drilling, and conduct corresponding drilling experiments. It is particularly important to develop a tiltable wellhead sealing device for the test platform. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/03E21B21/00
Inventor 田家林李友杨琳陈平陈德颉任堰牛马天寿庞小林朱永豪付传红
Owner SOUTHWEST PETROLEUM UNIV
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