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Construction method for casing pipes of offshore oil drilling platform

A riser, offshore oil technology, applied in water conservancy projects, artificial islands, underwater structures, etc., can solve problems such as construction efficiency impact, deviation, and impact on the performance of a single riser

Active Publication Date: 2016-09-07
江苏永维海工装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complexity of the submarine construction environment, the current riser often has deviations during the installation process, which not only affects the performance of a single riser, but when the deviation of the two adjacent risers is large, the The water risers in each wellhead will affect each other, which will cause the offshore oil drilling platform to repeatedly set the water riser during the construction process, which will affect its construction efficiency

Method used

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  • Construction method for casing pipes of offshore oil drilling platform
  • Construction method for casing pipes of offshore oil drilling platform

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A construction method for a water riser on an offshore oil drilling platform, which includes the following specific construction techniques:

[0039] 1) Based on the number of wellheads of the offshore oil drilling platform, a corresponding number of riser conduits 1 are taken, and a plurality of auxiliary installation end blocks 2 are respectively welded on the upper end of each riser conduit 1; Among the plurality of riser conduits 1, any two adjacent riser conduits 1 are correspondingly provided with a set of guide ribs 5;

[0040] 2) Transport the hoisting equipment, piling equipment, and the water riser 1 and guide rib 5 in step 1) to the offshore oil drilling platform;

[0041] 3) Suspend the hoisting equipment on the auxiliary installation end block of the first water riser 1, so that the above water riser 1 is placed inside the wellhead of the offshore oil drilling platform, and the upper end of the above water riser 1 is carried out. The welding of the guide r...

Embodiment 2

[0058] As an improvement of the present invention, in the auxiliary installation end block 2, the first connecting groove body 3 extends between the two side end surfaces of the auxiliary installation end block 2; the width of the guide rib 5 is larger than that of the auxiliary installation Width of end block 2. By adopting the above technical solution, it can improve the contact area between the guide rib and the water riser, so that its auxiliary guiding effect between two adjacent water riser can be improved.

[0059] The remaining features and advantages of this embodiment are the same as those of Embodiment 1.

Embodiment 3

[0061] As an improvement of the present invention, such as figure 2 As shown, the piling equipment in the step 2) includes a piling hammer 6 and a piling hammer balance bar 7, and piling hammer hangers 8 are arranged on both sides of the piling hammer 6, and the piling hammer 6 is fixed inside the piling hammer hanger 8. Both the hammer 6 and the pile hammer hanger 8 are suspended on the piling hammer balance bar 7; a top drive 9 is arranged above the piling hammer balance bar 7, and a balance bar crane for hanging the piling hammer balance bar is connected above the top drive 9. Cables and conduit slings for suspending riser conduits; under the piling hammer 6, a hammer-in short 10 extending in the vertical direction is provided, and the side end surface of the hammer-in short 10 is provided with multiple Extended positioning grooves 11, a plurality of positioning grooves 11 are rotationally symmetrical about the axis of the hammer-in shorting 10; each positioning groove 11 ...

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PUM

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Abstract

The invention discloses a construction method for casing pipes of an offshore oil drilling platform. According to the construction method, in the installation and construction process of the casing pipes, the structural stability of the ends of the casing pipes is remarkably improved in the hoisting and connecting process by arranging auxiliary installation end bodies, and therefore the casing pipes can keep extending in the vertical direction in real time in the installation process of the casing pipes. Meanwhile, guide rib plates are used for connecting every two adjacent casing pipes so that every two adjacent casing pipes can keep good coaxiality and parallelism degree in the connection process, and therefore the deviation degree of the casing pipes in one well mouth of the drilling platform can be controlled, the working performance and the installation efficiency of the casing pipes can be improved, and the integral construction efficiency of the offshore oil drilling platform can be improved.

Description

technical field [0001] The invention relates to the field of marine energy collection engineering, in particular to a construction method for a water-resisting conduit of an offshore oil drilling platform. Background technique [0002] The offshore oil drilling platform is one of the important links in the process of offshore energy development and collection. On the offshore oil drilling platform, the oil is extracted and transmitted by installing water-resisting conduits extending to the seabed in multiple wellheads. However, due to the complex construction environment on the seabed, current risers often have deviations during installation, which not only affects the performance of a single riser, but when the deviation of two adjacent risers is large, The water risers in each wellhead will affect each other, which leads to the need to repeatedly set the water riser in the construction process of the offshore oil drilling platform, which affects its construction efficiency...

Claims

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Application Information

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IPC IPC(8): E02B17/00
CPCE02B17/00
Inventor 金国林段梦兰金鑫乔东湘江俊西
Owner 江苏永维海工装备有限公司