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Online continuous production preparation method for concentric continuous oil pipe

A technology of oil pipe and outer pipe, which is applied in the field of online continuous production and preparation of concentric coiled tubing, which can solve problems such as easy springback, difficulty in fixing, and complicated implementation process, and achieve the effect of reducing production costs and saving pipe penetration costs

Inactive Publication Date: 2018-09-11
JASON ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has high requirements on the operation site and operators, and the implementation process is relatively complicated, and additional auxiliary heavy equipment needs to be rented for each operation, which has a high economic cost; it is difficult to fully spread the coiled tubing with a length of thousands of meters and fix it And it is easy to rebound, so there is a greater safety risk

Method used

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  • Online continuous production preparation method for concentric continuous oil pipe
  • Online continuous production preparation method for concentric continuous oil pipe
  • Online continuous production preparation method for concentric continuous oil pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A specific example of piercing a 4500m long CT80 steel grade inner pipe 1 with a length of 25.4mm*1.9mm into a corresponding CT80 steel grade outer pipe 2 with a length of 50.8mm*2.8mm.

[0036]The prepared inner tube 1 (25.4mm*1.9mm) is wound on the production drum, and it enters the guide frame 3 horizontally through the pipe inversion device, and enters the guide curved rail 4 through the guide frame 3 (curvature radius 2.5 m), after two times of bending in the curved guide rail 4, the inner tube 1 extends horizontally into the outer tube 2 (50.8mm*2.8mm) before crimping. After the inner pipe 1 is inserted into the outer pipe 2, the inner pipe 1 is welded to the bottom of the outer pipe 2, and the welding length is 1m. Adjust the inner tube 1 production drum and pipe inverter so that the speed at which the inner tube 1 penetrates into the outer tube 2 matches the production speed (20m / min) of the outer tube 2 high-frequency induction welding. With the production of t...

Embodiment 2

[0038] A specific example of piercing a 5000m long CT90 steel grade inner pipe 1 with a length of 25.4mm*2.1mm into a corresponding CT90 steel grade outer pipe 2 with a length of 50.8mm*2.8mm.

[0039] The prepared inner tube 1 (25.4mm*2.1mm) is wound on the production drum, and it enters the guide frame 3 horizontally through the pipe inversion device, and enters the guide curved rail 4 through the guide frame 3 (the radius of curvature is 2.5 m), after two times of bending in the curved guide rail 4, the inner tube 1 extends horizontally into the outer tube 2 (50.8mm*2.8mm) before crimping. After the inner pipe 1 is inserted into the outer pipe 2, the inner pipe 1 is welded to the bottom of the outer pipe 2, and the welding length is 1m. Adjust the inner tube 1 production roller and pipe inverter so that the speed at which the inner tube 1 penetrates the outer tube 2 matches the production speed (15m / min) of the outer tube 2 high-frequency induction welding. With the product...

Embodiment 3

[0041] A specific example of piercing a 3600m long CT80 steel grade inner pipe 1 with a length of 31.8mm*2.4mm into a corresponding CT80 steel grade outer pipe 2 with a length of 60.3mm*2.8mm.

[0042] The prepared inner tube 1 (31.8mm*2.4mm) is wound on the production drum, and it enters the guide frame 3 horizontally through the pipe inversion device, and enters the guide curved rail 4 through the guide frame 3 (the radius of curvature is 3m ), after two times of bending in the guide curved rail 4, the inner tube 1 horizontally extends into the outer tube 2 (60.3mm*2.8mm) before crimping. After the inner pipe 1 is inserted into the outer pipe 2, the inner pipe 1 is welded tightly to the bottom of the outer pipe 2, and the welding length is 1.5m. Adjust the inner tube 1 production drum and pipe inverter so that the speed at which the inner tube 1 penetrates into the outer tube 2 matches the production speed (13m / min) of the outer tube 2 high-frequency induction welding. As th...

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Abstract

The invention provides an online continuous production preparation method for a concentric continuous oil pipe. The overall disc of a prepared continuous inner pipe is guided into an outer pipe beforethe outer pipe is coiled and formed. The inner pipe winds a production roller and horizontally enters guide machine frames through a pipe inverter; a plurality of the guide machine frames are arranged at the upper part of an outer pipe winding machine; and the inner pipe enters guide curve rails through the guide machine frames, is curved in the guide curve rails, and horizontally extends into the outer pipe before being coiled and formed. According to the online continuous production preparation method for the concentric continuous oil pipe, the deficiencies in the conventional concentric continuous oil pipe production method can be avoided effectively; the degree of dependence on place and operation is low; additional auxiliary heavy equipment is not required; an implementation processis simple; the efficiency is high; the cost is low; and the method is safe and reliable.

Description

technical field [0001] The invention relates to the technical field of special coiled tubing devices for oil and gas exploration and development, in particular to a preparation method for online continuous production of concentric coiled tubing. Background technique [0002] Coiled tubing is different from conventional threaded tubing. It is a single, thousands-meter-long non-joint tubing that is wound on a drum and can be run down or pulled out continuously. Due to its low operating cost, simple and time-saving, safe and reliable performance, it is widely used in many fields such as sand washing, well washing, well logging, well completion and drilling. With the deepening of oil and gas field exploitation, special working conditions such as low-pressure and low-permeability wells, coalbed methane wells, and horizontal wells are increasing, which also puts forward higher requirements for coiled tubing devices and their operating technologies. [0003] The concentric coiled ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00E21B17/20B29D23/001B29C53/387B29C53/48
Inventor 蔡孝井陈化顺林旭徐常富王泰
Owner JASON ENERGY TECH CO LTD
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