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Continuous tube injection head control device

A control device and injection head technology, applied in fluid pressure actuators, drill pipes, casings, etc., can solve problems such as poor reliability and lack of adaptive constant power control, so as to improve efficiency and save flushing flow , The effect of simplifying the operation steps of personnel

Inactive Publication Date: 2013-04-03
SICHUAN HONGHUA PETROLEUM EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The control mode of "two-way variable pump + variable motor + reducer" is slightly less reliable because the execution device is a variable motor, while the hydraulic control mode of "two-way variable pump + fixed motor" is more reliable, but the work Lack of adaptive "constant power" control in coiled tubing hoisting and lowering conditions

Method used

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  • Continuous tube injection head control device

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with accompanying drawing:

[0018] Such as figure 1 As shown, a coiled tubing injection head control device includes a bidirectional speed regulation and pressure limiting device 2 , a parking and parking device 3 , a bidirectional balancing device 5 and a flushing device 1 . The bidirectional speed regulation and pressure limiting device 2 includes a frequency conversion motor 2-4, a bidirectional variable pump 2-3, a sequence valve 2-1 and an overflow valve 2-2, and the parking and parking device 3 includes a solenoid valve 3-1 and a brake 3-2 , the two-way balancing device 5 includes a first balancing valve 5-1 and a second balancing valve 5-2. The variable frequency motor 2-4 is connected to the PLC controller, and at the same time the variable frequency motor 2-4 is connected to the two-way variable pump 2-3 through a coupling and a bell housing, and the M port on the two-way variable pump 2-3 i...

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Abstract

The invention relates to a continuous tube injection head control device comprising a bi-directional speed governing and pressure limiting device, a parking stop device, a bi-directional balance device and a flusher, wherein the bi-directional speed governing and pressure limiting device comprises a variable frequency motor and a bi-directional variable displacement pump, the parking stop device comprises a solenoid valve and a brake, and the bi-directional balance device comprises a first balanced valve and a second balanced valve. The variable frequency motor is successively connected with the bi-directional variable displacement pump, the solenoid valve, the brake and the injection head motor which is respectively connected with the first balanced valve and the second balanced valve, the first balanced valve and the second balanced valve are respectively connected with the bi-directional variable displacement pump, a connection pipeline between the hydraulic fluid port A of the first balanced valve and the second balanced valve and the bi-directional variable displacement pump forms two main oil paths of the system. The variable frequency motor of the invention is applied in the injection head hydraulic system, adopts the control mode of a variable frequency motor, a variable displacement pump and a constant displacement motor to realize mechatronics control, improves powersource and system efficiency, reduces energy loss and optimizes working condition control and system reliability.

Description

technical field [0001] The invention relates to the technical field of oil and natural gas drilling equipment manufacturing, in particular to a coiled tubing injection head control device. Background technique [0002] Coiled tubing equipment is a device used in oil and gas well operations (workover or drilling), and the coiled tubing injection head is the main component of the coiled tubing equipment. In the coiled tubing equipment, the main function of the injection head is to clamp, lift, and lower the coiled tubing, so as to realize the lifting, lowering, and forced injection of the coiled tubing. The working conditions are more complicated, and the main requirement for the hydraulic control system is high power. , wide speed range, high reliability. There are two main control methods for the existing coiled tubing injection head system, one is the control method of "two-way variable pump + balance valve + variable motor + reducer", and the other is "two-way variable pu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B19/22F15B21/08
Inventor 王昊王翌单代伟陈俊
Owner SICHUAN HONGHUA PETROLEUM EQUIP
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