A lowering recovery tool for remote hydraulic control type hole protector
A technology of hole protector and hydraulic control, which is applied in the direction of wellbore/well components, sealing/isolation, earthwork drilling and production, etc. It can solve the problems of single tool function, long operation time, low reliability, etc., and achieve fast response, Save working time and achieve reliable operation
Active Publication Date: 2021-05-28
BAOJI PETROLEUM MASCH CO LTD +2
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- Abstract
- Description
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Problems solved by technology
If the hole protector needs to be lowered and installed, recovered, and the internal channel seal test, etc., the existing tools have a single function, and different special tools need to be prepared on the work platform to complete the above different work processes, resulting in cumbersome operations and The operation time is long; on the other hand, the existing hole protector installation tools or recovery tools are mostly mechanically rotated drill strings to complete the installation, locking and unlocking actions, and the working water of such tools is deeply affected by the length of the drill string , slow response and low reliability of locking and unlocking operations
Method used
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Embodiment Construction
[0020] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0021] Such as figure 1 As shown, it is a structural schematic diagram of a remote hydraulic control type hole protector used in the present invention, which includes a tool body 4. The tool body 4 is a hollow rotary body structure. The inner upper end of the tool body 4 is provided with a sealing cylinder 1. The top end of the body 4 is axially provided with a plurality of sealing joints 2, and one end of the sealing joints 2 is arranged inside the tool body 4, and a first cavity 23 whose volume can be changed by external force is provided on the outer periphery of the tool body 4. The second cavity 24, the third cavity 25, the fourth cavity 26 and the fifth cavity 27, the outside of the third cavity 25 is provided with a locking ring 7, as figure 2 As shown, it is a schematic diagram of the local structure of the lock ring 7 and the split...
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The invention discloses a lowering recovery tool for a remote hydraulic control type hole protector, which comprises a tool body, a sealing cylinder is arranged at the inner upper end of the tool body, a plurality of sealing joints are arranged axially on the tool body, and one end of the sealing joint is arranged Inside the tool body, the outer periphery of the tool body is provided with a first cavity, a second cavity, a third cavity, a fourth cavity and a fifth cavity whose volume can be changed by external force, and the bottom end of the tool body An anti-rotation device is provided, and multiple hydraulic control channels run through the axial direction of the tool body. The lowering and recovery tool of the present invention can reduce the types of supporting tools for underwater operations and save processing and manufacturing costs; the remote hydraulic control mode is reliable in operation and quick in response; the large-diameter structure of the tool can realize various underground operations and simplifies the operation process , reducing the operational risk.
Description
technical field [0001] The invention belongs to the field of offshore oil and gas drilling equipment, and in particular relates to a running-in recovery tool for a remote liquid-controlled hole protector. Background technique [0002] Hole protectors are one of the key supporting tools for subsea trees and subsea wellhead devices. They are widely used in the field of offshore oil and gas drilling. Hole protectors are used for drilling, well completion or workover. The sealing surface in the diameter of the top casing head of the wellhead device is protected to prevent physical damage such as collision and abrasion of the Christmas tree or the top casing head of the subsea wellhead device. The hole protector locks into the bore of the tree and acts as a barrier to isolate the internal and external pressures of the tree. The hole protector installation recovery tool is used to install and recover the hole protector through the marine riser and the inner channel of the blowout...
Claims
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IPC IPC(8): E21B23/04E21B33/037
CPCE21B23/04E21B33/037
Inventor 万春燕王定亚刘文霄孙传轩景佐军
Owner BAOJI PETROLEUM MASCH CO LTD