Tree body lowering and withdrawal tool for subsea production trees

A technology of underwater Christmas trees and tools, which is applied in earthwork drilling, wellbore/well components, buildings, etc., to achieve the effects of reducing stress, ensuring reliability, and simple operation

Inactive Publication Date: 2017-01-04
CHONGQING QIANWEI SCI & TECH GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The components of the Christmas tree and its feeding and recovery tools are indispensable key equipment. It is necessary to use the feeding tools to lower the tree body to the tubing hanger of the Christmas tree according to the process requirements, and complete the connection and locking. After the installation is in place, the lowering tool Unlocked, separated from the crown plug and retrieved; however,

Method used

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  • Tree body lowering and withdrawal tool for subsea production trees
  • Tree body lowering and withdrawal tool for subsea production trees
  • Tree body lowering and withdrawal tool for subsea production trees

Examples

Experimental program
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Example Embodiment

[0020] like figure 1 Among them, the underwater Christmas tree body of the present invention is sent into the recovery tool, mainly including a panel 1, an upper sleeve 2, a positioning plate 3, a guide sleeve 4, a bell mouth 5 and a tool body 8, the panel 1 is an ROV panel, and the panel 1 Set on the upper end of the tool body 8, as shown in the figure, it is connected to the tool body 8 through threads; there are two hydraulic ports 9 on the panel 1, and the hydraulic ports 9 are all hot-stab ports, which are convenient for quick connection and sealing; The main body 8 is provided with two hydraulic oil passages, that is, the first hydraulic oil passage 21 and the second hydraulic oil passage 22, and the first hydraulic oil passage 21 and the second hydraulic oil passage 22 are respectively connected to a hydraulic interface 9 through the hydraulic hose 7 Connected to form hydraulic oil flow channels respectively; on the hydraulic hose 7, additional components such as hydrau...

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Abstract

The invention discloses a tree body lowering and withdrawal tool for subsea production trees. The tool is mainly used for installation processes of deepwater oil-gas development and has a main function of lowering and withdrawing production trees. The tool mainly comprises an ROV operation panel, a body locking mechanism and an outer frame, wherein the ROV operation panel is connected with a production tree body through a bottom thread, and a hydraulic hose arranged on a hydraulic panel enters the tree body to lower requirements on sealing. Hydraulic pressure moves downwards through a driving ring to make the body locking mechanism stretch, and the tree is locked with the tool; the locking mechanism moves upwards due to injection of hydraulic pressure on the other side, and accordingly the locking mechanism is separated from the production tree, and withdrawal of the tool is realized. Compared with previous production tree lowering and withdrawal tools, the novel tree body lowering and withdrawal tool for subsea production trees has the advantages of being lightweight, convenient to install and low in cost.

Description

technical field [0001] The invention relates to the technical field of deep-water drilling and production of offshore oil. Specifically, it is a tool suitable for sending and recovering the underwater Christmas tree body. It can use the drill pipe to lower the Christmas tree and play a real-time monitoring role in the connection of the Christmas tree and its tools during the installation process. Background technique [0002] At present, countries all over the world have an increasing demand for energy, and land oil and gas resources are decreasing after large-scale development, which can no longer meet the country's demand for energy, and oil exploration and development are entering the deep sea. The underwater Christmas tree is the key equipment for offshore oil and gas development. The underwater Christmas tree (Christmas tree) is used in the petroleum industry. Its main functions are as follows: 1) Suspend tubing to support the weight of all tubing strings in the well; 2...

Claims

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Application Information

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IPC IPC(8): E21B23/04E21B47/001
CPCE21B23/04E21B47/001
Inventor 王锋王停施奇林罗晓兰徐健段梦兰吴世德王懿王莹莹徐丽美
Owner CHONGQING QIANWEI SCI & TECH GRP
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