Submarine pipeline suspended section slinging treatment method and sand bag tool used by same

A technology for submarine pipelines and sand bags, which is applied in the directions of pipeline laying and maintenance, pipes/pipe joints/pipes, mechanical equipment, etc. To achieve the effect of reducing the frequency of sand filling operations, simplifying the operation process and improving stability

Inactive Publication Date: 2018-06-15
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method is simple and easy to implement, when the sandbags are piled up at the bottom of the suspended pipe section due to sea current washing, sandbag collapse and other reasons, the pile of sandbags will topple and collapse, so its stability is poor, and the pile of sandbags can maintain the supporting effect shorter time

Method used

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  • Submarine pipeline suspended section slinging treatment method and sand bag tool used by same
  • Submarine pipeline suspended section slinging treatment method and sand bag tool used by same
  • Submarine pipeline suspended section slinging treatment method and sand bag tool used by same

Examples

Experimental program
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Effect test

Embodiment 1

[0045] A sandbag tool used for sandblasting treatment of suspended sections of submarine pipelines, see image 3 , including sand bag 1 and belt 2 that sand is housed. The sandbag 1 has two parts, which are in the shape of a two-stage "candied haws", and the volumes of the two parts are roughly the same; two parts. see Figure 4 , The sand bag tool includes three sand bags 1, and the three sand bags 2 are connected in series end-to-end through a connecting belt 3. Both the strap 2 and the connecting strap 3 are nylon ropes.

[0046] A sand blasting treatment method for suspended sections of submarine pipelines, comprising:

[0047] (1) Put all the sand into the sand bag, seal the sand bag, pinch the middle part of the sand bag with your hands, and tie it with a nylon rope, so that the sand bag is divided into two parts with roughly the same volume;

[0048] (2) Utilize nylon rope to connect 3 above-mentioned sandbags end-to-end in series along the length direction of sand...

Embodiment 2

[0051] A sandbag tool used for sandblasting treatment of suspended sections of submarine pipelines, see Figure 5 , consisting of sandbags and belts filled with sand. The sandbag has three parts, which are in the shape of a three-stage "sugar gourd", and the volumes of the three parts are roughly the same, which are about 1 / 3 of the volume of the entire sandbag; the straps are tied outside the sandbag , so that three parts of the sandbag are formed. The sandbag tool includes one of said sandbags. The belt is as Figure 6 Nylon straps shown.

[0052] A sand blasting treatment method for suspended sections of submarine pipelines, comprising:

[0053] (1) Fill the sand bag with sand. When the sand is filled to about 1 / 3 volume, use nylon binding tape for the first binding; continue to fill sand with about 1 / 3 volume, and use nylon binding tape for the second binding; continue After filling all the sand, seal the sand bag;

[0054] (2) Fill the above-mentioned sandbags below t...

Embodiment 3

[0057] The utility model relates to a sand bag tool used for sand blasting treatment of a suspended section of a submarine pipeline, comprising a sand bag and a belt filled with sand. The sand bag has three parts, which are in the shape of a three-stage "sugar gourd", and the volumes of the three parts are not exactly the same, being about 1 / 4, about 1 / 2 and about 1 / 4 of the volume of the entire sand bag; The straps are strapped over the sandbag such that three parts of the sandbag are formed. The sand bag tool includes two sand bags, and the two sand bags are connected in parallel along the width direction of the sand bag through a connecting belt. The strap is a nylon binding strap, and the connecting strap is a stainless steel wire.

[0058] A sand blasting treatment method for suspended sections of submarine pipelines, comprising:

[0059] (1) Fill the sand bag with sand. When the sand is filled to about 1 / 4 volume, use nylon binding tape for the first binding; continue ...

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Abstract

The invention discloses a submarine pipeline suspended section slinging treatment method and a sand bag tool used by the submarine pipeline suspended section slinging treatment method. The method comprises the steps that a sand bag is filled with sand, binding is carried out once the sand bag is filled with a certain amount of sand till sand filling is completed, the sand bag is sealed, and therefore the sand bag is divided into multiple portions; or, all sand is input into the sand bag, the sand bag is sealed, the sand bag filled with sand is bound, and therefore the sand bag is divided intomultiple portions; and the sand bag divided into the multiple portions is placed to the position below a submarine pipeline suspended section. The sand bag tool comprises the sand bag filled with sandand belts, wherein the sand bag is provided with the multiple portions, and the exterior of the sand bag is bound by the belts. By means of the slinging treatment method, stability of sand bags stacked at the bottom of a pipeline can be improved, a supporting effect is kept at the bottom of the pipeline for a long time, and the submarine pipeline operation and maintenance cost is reduced.

Description

technical field [0001] This application relates to but not limited to submarine pipeline treatment technology, in particular to but not limited to a method of sand blasting treatment for suspended sections of submarine pipelines and sand bag tools used therein. Background technique [0002] Submarine pipelines are an important means of offshore oil and gas transportation. Submarine pipelines have suspended sections due to various reasons on the seabed. Under the action of ocean currents and the gravity of the pipe itself, the suspended section of the submarine pipeline will experience vibration fatigue and stress concentration, which is a threat to the safe operation of the submarine pipeline. Therefore, the suspended section of the submarine pipeline needs to be treated. At present, the main control methods include filling sandbags at the bottom of suspended pipe sections, riprap, mudbags, and steel pile support. The sand bag method is currently the most widely used metho...

Claims

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Application Information

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IPC IPC(8): F16L1/20F16L1/16
Inventor 徐永振荆海生李成钢张敬安
Owner CHINA NAT OFFSHORE OIL CORP
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