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Coiled tubing fatigue machine and hydraulic system thereof

A technology of hydraulic system and fatigue machine, which is applied in mechanical equipment, fluid pressure converter, fluid pressure actuating device, etc., can solve the problems of low test efficiency and equipment reliability need to be strengthened, and achieve reasonable structural design and equipment reliability. Strong and safe to use

Pending Publication Date: 2021-04-02
XINDA KECHUANG TANGSHAN PETROLEUM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, each of the existing coiled tubing fatigue machines requires a separate hydraulic control system, the test efficiency is low, and the reliability of the equipment needs to be strengthened

Method used

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  • Coiled tubing fatigue machine and hydraulic system thereof
  • Coiled tubing fatigue machine and hydraulic system thereof
  • Coiled tubing fatigue machine and hydraulic system thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 1 , figure 2 As shown, a coiled tubing fatigue machine includes a straightening template 3, a curved template 4, a sliding device 2, a driving device 5 and a booster cylinder 6, and the straightening template 3 and the curved template 4 are clamped Hollow pipe test piece 1, the top end of the hollow pipe test piece 1 is connected to the pressurized cylinder 6, and the bottom end is slidably connected in the sliding device 2, wherein the pressurized cylinder 6 can be the hollow pipe test piece 1 provides a constant internal pressure, the driving device 5 is connected to the sliding device 2 and can drive the sliding device 2 to move horizontally, and the side of the alignment template 3 close to the hollow pipe test piece 1 is a plane The side of the bending template 4 close to the hollow pipe test piece 1 is an arc plate with a constant curvature radius, and the driving device 5 provides bidirectional force to bend or straighten the hollow pipe test pie...

Embodiment 2

[0036]A hydraulic system for a coiled tubing fatigue machine, comprising a first fatigue machine, a second fatigue machine, a third fatigue machine, a high-pressure pump, a motor, an electromagnetic reversing valve, a booster cylinder 6, a hydraulic cylinder and an energy storage tank, The motor is connected between the high-pressure pump and the electromagnetic reversing valve, the electromagnetic reversing valve is connected with the hydraulic cylinder and can control the reciprocating movement of the piston rod of the hydraulic cylinder, and the hydraulic cylinder is connected with The booster cylinder 6, the booster cylinder 6 is connected to the energy storage tank, and the output end of the energy storage tank is respectively connected to the first fatigue machine, the second fatigue machine and the third fatigue machine. machine, when in use, first start the high-pressure pump and the electromagnetic reversing valve, the electromagnetic reversing valve controls the pisto...

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Abstract

The present invention discloses a coiled tubing fatigue machine and a hydraulic system thereof. The coiled tubing fatigue machine comprises a straightening template, a bending template, a sliding device, a driving device and a pressure cylinder, a hollow tubing test piece is clamped between the straightening template and the bending template, the top end of the hollow tubing test piece is connected with the pressure cylinder, and the bottom end of the hollow tubing test piece is connected into the sliding device in a sliding mode; the pressure cylinder provides constant internal pressure for the hollow pipe test piece, the driving device is connected with the sliding device and can drive the sliding device to move horizontally, one side, close to the hollow pipe test piece, of the straightening template is a plane, one side, close to the hollow pipe test piece, of the bending template is an arc plate, and the other side, close to the hollow pipe test piece, of the bending template is an arc plate. The driving device provides bidirectional force to bend or straighten the hollow pipe test piece. According to the fatigue machine, mechanical transmission is adopted, the efficiency is higher, the reliability is higher, meanwhile, the service life of the pipe can be effectively judged, reference is provided for use of the coiled tubing, and the overall structural design is reasonable.

Description

technical field [0001] The invention relates to the technical field of coiled tubing fatigue tests, in particular to a coiled tubing fatigue machine and a hydraulic system thereof. Background technique [0002] Coiled tubing is a special steel pipe used in oil and gas field workover, logging, drilling, etc. Due to its advantages in the above operations, such as high efficiency, low cost, wide operating range, and small footprint, coiled tubing has become popular in recent years. The technology is developing very fast, and the product development prospect is very good. At present, each of the existing coiled tubing fatigue machines requires a separate hydraulic control system, the test efficiency is low, and the reliability of the equipment needs to be strengthened. Contents of the invention [0003] The purpose of the present invention is to provide a coiled tubing fatigue machine and its hydraulic system to solve the above-mentioned problems in the prior art. [0004] I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/36G01N3/02F15B3/00F15B1/027
CPCF15B1/0275F15B3/00G01N3/02G01N3/36G01N2203/0073
Inventor 张雅丽董健段建良孙启发刘佳俊刘月明
Owner XINDA KECHUANG TANGSHAN PETROLEUM EQUIP CO LTD