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Coronary plug mounting tool

A technology for installing tools and crowns, which is applied in the direction of wellbore/well components, earthwork drilling and production, etc., to achieve the effect of simple and reliable operation, ensuring reliability and simple structure

Inactive Publication Date: 2018-04-20
CHONGQING QIANWEI SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Restricted by foreign technical blockades and other reasons, there are few domestic institutions that conduct research on crown plug installation tools, and there are also few manufacturers that can manufacture deep-water Christmas tree crown plug installation tools.

Method used

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  • Coronary plug mounting tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Embodiment one, such as Figure 1 to Figure 4 Shown:

[0060] A crown plug installation tool, including a body 2, an upper joint 1, a mandrel 3, a pressure spring, a lock block 7 and a lock block limiter;

[0061] The body 2 is a cylindrical structure as a whole, and a stepped hole is provided through the interior of the body 2 along the axial direction; the body 2 is top, middle and bottom from top to bottom, wherein the top and the upper joint 1 Detachable fixed connection; the outer diameter of the middle part is greater than the inner diameter of the drive cylinder of the crown plug and is used to push the upper end surface of the drive cylinder of the crown plug; the outer diameter of the bottom is smaller than the outer diameter of the middle part and can be inserted into the drive cylinder of the crown plug Inside, and the outer surface of the bottom is radially provided with lock block installation holes, the lock block installation holes are at least two evenl...

Embodiment 2

[0092] Embodiment two, not shown in the figure:

[0093] The difference between this embodiment and the foregoing embodiment is that:

[0094] There is a block at the outer end of the mounting hole of the lock block, and there is a hole in the middle of the block;

[0095] The locking block is a bar-shaped structure in which the outer surface is slidingly fitted with the inner surface of the piercing hole;

[0096]The stopper of the lock block is a piston rod, and the end face of the piston rod is vertically fixedly connected with the end of the lock block away from the hole, and the side of the piston rod and the inner surface of the lock block installation hole are slidingly fitted. connected;

[0097] The compression spring is sleeved on the locking block and its two ends abut between the baffle plate and the locking block limiter.

[0098] This embodiment also enables the outer end of the lock block to extend or retract under the drive of the mandrel 3 . However, this ...

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PUM

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Abstract

The invention discloses a coronary plug mounting tool. The coronary plug mounting tool is characterized by comprising a body, an upper joint, a mandrel, compressed springs, lock blocks and lock blocklimiting parts. A step hole is axially formed in the body in a penetrating mode. The body comprises a top portion, a middle portion and a bottom portion from top to bottom, wherein the top portion isdetachably and fixedly connected with the upper joint. Lock block mounting holes are formed in the outer side face of the bottom portion in a penetrating mode in the radial direction, each lock blockmounting hole is assembled with the compressed spring, the lock blocks and the lock block limiting parts, and the lock blocks can extend out or retract back to the lock block mounting holes. The uppersection outer side face of the mandrel is in slidable fit connection with the inner side face of the step hole, and the upper end of the mandrel is a limiting end. When the limiting end abuts againstthe step face of the step hole, the part, exposed out of the bottom of the body, of the lower end of the mandrel is an unlocking section, the diameter of the outer side face of the unlocking sectionis gradually decreased from top to bottom, and the unlocking section is used for allowing lock blocks to retract back to the lock block mounting holes completely. The coronary plug mounting tool has the advantages of being reliable in connection and easy and convenient to operate and control.

Description

technical field [0001] The invention belongs to the field of installation tools for oil and gas drilling equipment, and in particular relates to a crown plug installation tool. Background technique [0002] Subsea tree is an extremely important system in offshore oil exploitation, and its structure is very complex. [0003] Existing subsea trees are generally divided into vertical trees and horizontal trees. Among them, the main key components of horizontal trees include tubing hangers, crown plugs, inner tree caps, connectors, SCM, etc. . Two crown plugs are arranged vertically in the horizontal tree, wherein the lower crown plug is installed in the tubing hanger, and the upper crown plug is installed in the tubing hanger or the inner tree cap. The crown plug is used to block the upward flow or overflow of crude oil, so that the crude oil flows out from the production channel hole on the side of the tubing hanger, and reaches the production manifold through the valve grou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B23/00
CPCE21B23/00
Inventor 李荣叶天源林彩明谭双妮龚光辉石静
Owner CHONGQING QIANWEI SCI & TECH GRP
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