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Flexible composite tubing string lifting equipment

A technology of composite tubing and equipment, applied in drilling equipment, drill pipe, casing and other directions, can solve the problems of difficult maintenance, inability to open, complex structure, etc., and achieve the effect of facilitating well site operations and avoiding wear and tear

Active Publication Date: 2016-08-03
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The coiled tubing used in the prior art is similar to this tubing, and is mostly used in the gas field drainage and gas recovery process, but the general structure is relatively complicated, and the injection device is designed as one piece, which cannot be opened or disassembled to remove the coiled tubing. Lifting and lowering of oil pipes

Method used

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  • Flexible composite tubing string lifting equipment
  • Flexible composite tubing string lifting equipment
  • Flexible composite tubing string lifting equipment

Examples

Experimental program
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Effect test

Embodiment

[0022] refer to Figures 1 to 7 Embodiments of the present invention are further described:

[0023] The present invention includes a take-up and release mechanism 1, a cable arrangement mechanism 2, a traction mechanism 3, a pole 4, an upper gooseneck pulley 5, a lower gooseneck pulley 6, a wellhead straightening mechanism 7, a triangular bracket 8 and a base 9:

[0024] The take-up and pay-off reel 1.1 of the take-up and pay-off mechanism 1 is fixed on the take-up and pay-off support 1.2, and the two ends of the support 1.2 are provided with a take-up and pay-off driving device 1.3 for controlling the speed and movement direction of the take-up and pay-off reel 1.1.

[0025] The lead screw 2.3 of the cable arrangement mechanism 2 is set on the cable support 2.5, and one end of the lead screw 2.3 is connected to the cable drive device 2.4 for controlling its rotation; switch 2.2. The cable arranging drive device 2.4 and the limit switch 2.2 drive the cable arranging instrum...

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Abstract

The invention discloses a flexible composite tubing string hoisting device, which is designed for improving the effective operating efficiency of the flexible composite tubing string. The lifting equipment is mainly composed of a take-up and pay-off mechanism, a cable arrangement mechanism, a traction mechanism and a wellhead straightening mechanism. The wire arranging and take-up mechanism is used for the arrangement and winding of the tubing, the traction mechanism is used to control the movement of the tubing, and the wellhead straightening mechanism is used to ensure that the tubing is aligned with the wellhead for smooth lifting. The invention uses pulley block guidance and equipment frequency conversion control to keep the operation of each component coordinated and consistent, realize the lifting operation of the flexible composite tubing string, without installing transformers and other circuit equipment, conform to the use conditions of the general pumping unit well site, and can facilitate the well site operation, effectively avoiding wear, scratches and strains on the outer wall of the flexible composite tubing, and ensuring that it is completely lowered into or pulled out of the water injection wellbore.

Description

technical field [0001] The invention relates to a flexible composite tubing string hoisting device, which belongs to the technical field of development of water injection wells in oil fields. Background technique [0002] The Ordos Basin, where Changqing Oilfield is located, is located in an arid region with little rainfall and lacks natural water resources. Water injection development can maintain formation energy and improve recovery. Therefore, the oilfield produced water reinjection process is implemented. Produced water is highly corrosive, and the service life of ordinary steel water injection strings is short, generally 4-5 years. Flexible composite tubing is suitable for water injection wells, but it is different from ordinary steel tubing, and the downhole operation equipment is also different. At present, there is no lifting equipment that can meet the operation of flexible composite tubing in water injection wells. [0003] The coiled tubing used in the prior art...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B19/22
Inventor 申晓莉朱天寿曾亚勤郭方元胡美艳巨亚锋于九政徐自强
Owner PETROCHINA CO LTD
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