CN201568041U - Synchronous control system of injection head and winding drum of continuous string coiled tubing unit - Google Patents
Synchronous control system of injection head and winding drum of continuous string coiled tubing unit Download PDFInfo
- Publication number
- CN201568041U CN201568041U CN2009200161421U CN200920016142U CN201568041U CN 201568041 U CN201568041 U CN 201568041U CN 2009200161421 U CN2009200161421 U CN 2009200161421U CN 200920016142 U CN200920016142 U CN 200920016142U CN 201568041 U CN201568041 U CN 201568041U
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- Prior art keywords
- injection head
- winding drum
- valve
- drum motor
- coiled tubing
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Abstract
The utility model discloses a synchronous control system of an injection head and a winding drum of a continuous string coiled tubing unit. The control system comprises an injection head enclosed drive subsystem and a winding drum open subsystem, wherein the winding drum open subsystem comprises a load-sensible variable displacement pump, a hand-operated proportional valve and a winding drum motor, and further comprises a variable back pressure valve and an overflow valve, wherein the variable back pressure valve is mounted on an outlet oil line of the winding drum motor; and the overflow valve is mounted on an inlet oil line of the winding drum motor. Under the action of the overflow valve and the variable back pressure valve in a system loop of the utility model, either downwards pushed or upwards lifted during the operating process, the coiled tubing is straightened and has certain tension, thereby achieving the synchronizing speed matching of an injection head motor and a winding drum motor. The utility model has the advantages of reliable operation, simple structure, low cost and convenient installation, maintenance and adjustment.
Description
Technical field
The utility model relates to the injection head and the reel synchronous control system of the coild tubing unit in a kind of oil exploration industry, particularly a kind of coild tubing unit.
Background technology
At present, the complete dependence on import of coild tubing unit that use in domestic each oil field, the injection head of this coild tubing unit and reel are respectively by injection head motor and drum motor driven rotary.Controlling the following of coiled tubing by manual control mode pushes away and upward strain speed, and controlling motor by manual control mode drives, coild tubing unit is when carrying out operation, the injection head motor under high pressure turns round, drum motor under low pressure turns round, and finishes the action of carrying coiled tubing between the two jointly; Coiled tubing one end is clamped in the injection head fixture block, is driven by the injection head motor, and the other end of coiled tubing is wrapped on the reel, is driven by drum motor.In the overall process of carrying oil pipe, under the situation of not pulled, be in linear state at the coiled tubing between injection head and the reel, and have certain tension force---the motion that is injection head motor and drum motor will be mated synchronously.But manually the human factor of control causes accurately controlling synchronous coupling, causes the misaligned or coiled tubing of coiled tubing on the reel to be subjected to pulling force excessive easily, reduces the application life of coiled tubing.Chinese patent 200810104308.5 discloses " speed matching control device between a kind of injection head of continuous pipe equipment and the cylinder ", this device is by load-sensitive+pressure compensated pump, a proportion directional valve, a shuttle valve, two equalizing valves, a hand-operated direction valve, two injection head motors, a drum motor, two reducing valve, two speed probes, four solenoid operated directional valves, a proportional pressure control valve, a proportional pressure-reducing valve, proportional flow control valve and fuel tank are formed, this device can be realized the Collaborative Control of injection head and two subsystems of cylinder, reach cylinder injection or upward strain speed and the continuous pipe of injection head unclamp or speed of wrap consistent, make on the cylinder pipe " back of the body pulling force " substantially constant continuously.But this device is because the linearity error and the hysteresis of proportioning valve makes the course of work have integrity problem, and complex structure, manufacturing cost are higher.
Summary of the invention
For solving the problems referred to above that prior art exists, the utility model will design a kind of injection head and reel synchronous control system of coild tubing unit, between the two synchronized movement coupling of injection head and reel when realizing coild tubing unit work, coiled tubing under push away or on carry in the process stressed constant, the coild tubing unit reliable operation, simple in structure, manufacturing cost is lower.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of injection head of coild tubing unit and reel synchronous control system, mainly comprise injection head enclosed drive subsystem and reel open subsystem, described injection head Closed Hydraulic drive subsystem comprises the gear pump and the injection head motor of bidirectional variable plunger displacement pump, coaxial rotation, described reel open subsystem comprises load-sensitive variable pump, proportioning valve and drum motor, also comprises becoming counterbalance valve and overflow valve; Described change counterbalance valve is installed on the oil return line of drum motor, and its oil-in links to each other with the outlet of drum motor, and its oil-out links to each other with fuel tank by reversal valve; Described overflow valve is installed on the in-line of drum motor, and its oil-in links to each other with the load-sensitive variable pump by manual proportioning valve, and its oil-out is connected with fuel tank.
Compared with prior art, the utlity model has following beneficial effect:
1, because overflow valve and become the effect of back of the body stream valve in the system circuit of the present utility model, coiled tubing push away under no matter being in the course of the work or on carry, all be straightened and have certain force of strain, realized the synchronizing speed coupling of injection head motor and drum motor.
2, because no matter the utility model is to push away coiled tubing or carry coiled tubing from the down-hole under in well, coiled tubing between injection head and the reel is subjected to pulling force constant, guarantee that not only coiled tubing is straightened, coiled tubing marshalling on the reel can also prolong oil pipe application life.
3, because the overflow valve that the utility model adopts and become the homemade Hydraulic Elements that counterbalance valve is a technology maturation commonly used in China's mechanical industry, the cost of common overflow valve is about 1/10th of proportional pressure control valve cost, so adopt this synchronizing speed matching technique to have reliable operation, simple in structure, cost is low, installation and maintenance are easy to adjust advantage.
Description of drawings
The utility model is 1 of drawings attached only, wherein:
Fig. 1 is the synchronous matching control system hydraulic diagram of coild tubing unit injection head and reel.
Among the figure: 1, injection head motor, 2, drum motor, 3, become counterbalance valve, 4, overflow valve, 5, coiled tubing, 6, the bidirectional variable plunger displacement pump, 7, gear pump, 8, the load-sensitive variable pump, 9, manual proportioning valve, 10, fuel tank.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.As shown in Figure 1, a kind of injection head of coild tubing unit and reel synchronous control system, mainly comprise injection head enclosed drive subsystem and reel open subsystem, described injection head Closed Hydraulic drive subsystem comprises the gear pump 7 and the injection head motor 1 of bidirectional variable plunger displacement pump 6, coaxial rotation, described reel open subsystem comprises load-sensitive variable pump 8, manual proportioning valve 9 and drum motor 2, also comprises becoming counterbalance valve 3 and overflow valve 4; Described change counterbalance valve 3 is installed on the oil return line of drum motor 2, and its oil-in links to each other with the outlet of drum motor 2, and its oil-out links to each other with fuel tank 10 by reversal valve; Described overflow valve 4 is installed on the in-line of drum motor 2, and its oil-in links to each other with load-sensitive variable pump 8 by manual proportioning valve 9, and its oil-out is connected with fuel tank 10.
Control method of the present utility model mainly may further comprise the steps:
A, push away oil pipe down: when coild tubing unit pushes away coiled tubing 5 under in oil well, injection head motor 1 is initiatively, drum motor 2 is servo-actuated, this moment drum motor 2 suitable hydraulic oil pumps, the fixture block of installing on the injection head is under the driving of hydraulic jack, coiled tubing 5 is clamped, and injection head motor 1 chain drive-belt pushes away under coiled tubing 5 is in well; The other end of coiled tubing 5 is wrapped on the reel, drive by drum motor 2, when under injection head motor 1 is in well, pushing away coiled tubing 5,3 pairs of coiled tubings of change counterbalance valve on drum motor 2 oil return lines 5 produce a constant pulling force, coiled tubing 5 is stretching, push away oil pipe speed down and determine by injection head motor 1 rotating speed;
B, on carry oil pipe: when coild tubing unit was carried coiled tubing 5 from oil well, drum motor 2 was initiatively, and injection head motor 1 is servo-actuated; This moment, coiled tubing 5 was twined in drum motor 2 driving reel rotations; Injection head motor 1 will be carried on the coiled tubing in the well 5, and hoisting velocity is by 1 decision of injection head motor, and the stretching power of coiled tubing 5 is by overflow valve 4 decisions that are installed in parallel on the in-line of drum motor 2.
Claims (1)
1. the injection head of a coild tubing unit and reel synchronous control system, mainly comprise injection head enclosed drive subsystem and reel open subsystem, described injection head Closed Hydraulic drive subsystem comprises the gear pump (7) and the injection head motor (1) of bidirectional variable plunger displacement pump (6), coaxial rotation, described reel open subsystem comprises load-sensitive variable pump (8), manual proportioning valve (9) and drum motor (2), it is characterized in that: also comprise becoming counterbalance valve (3) and overflow valve (4); Described change counterbalance valve (3) is installed on the oil return line of drum motor (2), and its oil-in links to each other with the outlet of drum motor (2), and its oil-out is connected with fuel tank (10) by reversal valve; Described overflow valve (4) is installed on the in-line of drum motor (2), and its oil-in links to each other with load-sensitive variable pump (8) by manual proportioning valve (9), and its oil-out is connected with fuel tank (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200161421U CN201568041U (en) | 2009-08-04 | 2009-08-04 | Synchronous control system of injection head and winding drum of continuous string coiled tubing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200161421U CN201568041U (en) | 2009-08-04 | 2009-08-04 | Synchronous control system of injection head and winding drum of continuous string coiled tubing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201568041U true CN201568041U (en) | 2010-09-01 |
Family
ID=42660328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200161421U Expired - Fee Related CN201568041U (en) | 2009-08-04 | 2009-08-04 | Synchronous control system of injection head and winding drum of continuous string coiled tubing unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201568041U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014299A (en) * | 2016-07-29 | 2016-10-12 | 山东科瑞机械制造有限公司 | Marine explosion-proof electric coiled tubing power skid |
| CN116146179A (en) * | 2023-02-14 | 2023-05-23 | 西安蓝水泵业有限公司 | Carbon fiber rod type logging cable injection system and process |
-
2009
- 2009-08-04 CN CN2009200161421U patent/CN201568041U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014299A (en) * | 2016-07-29 | 2016-10-12 | 山东科瑞机械制造有限公司 | Marine explosion-proof electric coiled tubing power skid |
| CN116146179A (en) * | 2023-02-14 | 2023-05-23 | 西安蓝水泵业有限公司 | Carbon fiber rod type logging cable injection system and process |
| CN116146179B (en) * | 2023-02-14 | 2024-04-02 | 陕西航天德林科技集团有限公司 | Carbon fiber rod type logging cable injection system and process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100901 Termination date: 20130804 |