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Ocean workover rig derrick structure and mounting method thereof

A technology of workover rig and derrick, which is applied in the direction of drilling equipment, earthwork drilling, supporting devices, etc., which can solve the problems of difficult operation of the crane, difficulty of operation, and limitation of the working space, so as to overcome the insufficient capacity of the crane and reduce the The effect of weight and stability

Pending Publication Date: 2021-11-30
中石化四机石油机械有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technical solution is easily limited by the working space, the operation of the crane is difficult, and the operation is difficult

Method used

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  • Ocean workover rig derrick structure and mounting method thereof
  • Ocean workover rig derrick structure and mounting method thereof
  • Ocean workover rig derrick structure and mounting method thereof

Examples

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Embodiment Construction

[0049] The preferred solution is Figure 1 to Figure 15 As shown, an offshore workover rig derrick structure includes a derrick base 1, a lower section of the derrick section 2, an upper section of the lower section of the derrick section 3 and an upper section of the derrick section 4. The top of the derrick base 1 is provided with a hinge seat 102, and the bottom of the lower section of the derrick section 2 is provided with a hinged seat 102. There is a connecting seat 204, and the hinge seat 102 is connected with the connecting seat 204 through a pin; the top of the lower section 2 of the lower section of the derrick is provided with a connecting female block 207, and the bottom of the upper section 3 of the lower section of the derrick is provided with a connecting male block 305, the connecting male block 305 and the connecting female Block 207 is connected by pins; the lower section 2 of the lower section of the derrick and the upper section 3 of the lower section of the...

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PUM

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Abstract

The invention provides an ocean workover rig derrick structure and a mounting method thereof. The ocean workover rig derrick structure comprises a derrick base, a derrick lower segment lower section, a derrick lower segment upper section and a derrick upper segment, a hinge seat is arranged at the top of the derrick base, a connecting seat is arranged at the bottom of the derrick lower segment lower section, and the hinge seat is connected with the connecting seat through a pin shaft; a connecting female block is arranged at the top of the derrick lower segment lower section, a connecting male block is arranged at the derrick lower segment upper section, and the connecting male block is connected with the connecting female block through a pin shaft; the derrick lower segment lower section and the derrick lower segment upper section are connected to form a derrick lower segment, the derrick lower segment sleeves the derrick upper segment, and the derrick upper segment and the derrick lower segment are connected through a telescopic oil cylinder; and movable limiting guide rails are arranged on the inner sides of the derrick lower segment lower section and the derrick lower segment upper section, and the derrick upper segment is in sliding fit with the movable limiting guide rails. A traditional horizontal penetrating type sleeving mode of the ocean workover rig derrick is changed, a vertical hoisting installation sleeving mode is adopted, and installation is reasonable and convenient.

Description

technical field [0001] The invention belongs to the field of derricks used for workover in the oil and gas industry, and particularly relates to a derrick structure of an ocean workover rig and an installation method thereof. Background technique [0002] With the continuous advancement of offshore oil development projects, the existing offshore platforms have an increasing demand for replacement or upgrading of drilling and workover equipment. As the key equipment of offshore workover rigs, the derrick is the key to replacing or transforming the existing offshore platform workover rig derrick. In addition to considering factors such as drilling and workover operation load, marine environmental load, platform bearing load, etc., there are also limited space for 10t lifting capacity crane and boom transfer commonly configured on existing offshore production platforms, and limited platform wellhead table tool layout and operation space, etc. factor influence. [0003] The pri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B15/02
CPCE21B15/02
Inventor 朱颢金宗祥张国友方刚刘洋刘贤威刘爽安杰
Owner 中石化四机石油机械有限公司
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