CN206571442U - Half active crown-block heave compensator - Google Patents

Half active crown-block heave compensator Download PDF

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Publication number
CN206571442U
CN206571442U CN201720150622.1U CN201720150622U CN206571442U CN 206571442 U CN206571442 U CN 206571442U CN 201720150622 U CN201720150622 U CN 201720150622U CN 206571442 U CN206571442 U CN 206571442U
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China
Prior art keywords
crown
nest
pulley group
swing arm
floating pulley
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Active
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CN201720150622.1U
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Chinese (zh)
Inventor
吕岩
赵红梅
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Sichuan Honghua Petroleum Equipment Co Ltd
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Sichuan Honghua Petroleum Equipment Co Ltd
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Abstract

The utility model is related to petroleum and natural gas drilling technique field, more particularly to a kind of half active crown-block heave compensator, and it includes:Crown's nest, the accumulator that is fixedly connected with the crown's nest, guide assembly, Active Compensation cylinder and passively compensate cylinder, with the crown's nest is flexibly connected waves arm assembly, the floating pulley group being slidably connected with the guide assembly, the tourist bus being flexibly connected with the floating pulley group, the device may be such that tourist bus is moved between the Active Compensation cylinder and passive compensation cylinder, so as to reduce height, weight and the center of gravity of derrick or crown-block heave compensator structure in itself, the stressing conditions of hull are improved.

Description

Half active crown-block heave compensator
Technical field
The utility model is related to petroleum and natural gas drilling technique field, and more particularly to one kind is adapted to marine floating type drilling well New half active crown-block heave compensator.
Background technology
The floating drilling platform that marine drilling is used will produce periodic heave movement under wave action, so that Drill string produces the change for moving back and forth and causing Bottom Hole Bit Weight In A, or even drill bit can be made to depart from shaft bottom, influences drilling efficiency, reduces drill bit And Life of drill rod, safe operation hidden danger is caused, even resulting in inclement weather can not creep into and stop work, overhead traveling crane heave compensation Device is applied to marine floating type well system, can compensate drill string heave movement, keeps the pressure of the drill stable, reduces the downtime, reduction Drilling cost.
Compensation way is heaved on floating drilling platform mainly telescopic drill rod heave compensation, installing heave compensation dress on dead line Put, installing heave compensator between tourist bus and hook, installing heave compensator, winch heave compensation, Ram-Rig on overhead traveling crane The diversified forms such as hydraulic drill rig lifting system heave compensation, are now broadly divided into Active Compensation and passive compensation way, Active Compensation Process is more complicated needed for mode, and required energy is more, and passive compensation way precision is relatively low, and wherein crown-block heave compensator is pacified Mounted in derrick top, center of gravity is higher;And the steel wire rope on fast sheave is due to winch arrangement, the motion of hull, fast line characteristic Easily de- groove, influences efficiency.
To solve the above problems, needing a kind of half active crown-block heave compensator of invention, to keep the pressure of the drill stable, reduce Downtime, reduce drilling cost.
Utility model content
The purpose of this utility model is to overcome the above-mentioned deficiency in the presence of prior art simple there is provided a kind of compensation process It is single, half higher active crown-block heave compensator road of compensation precision.
In order to achieve the above object, the utility model provides following technical scheme.
Half active crown-block heave compensator, it includes:Crown's nest, the accumulator being fixedly connected with the crown's nest, leads Rail assembly, Active Compensation cylinder and cylinder is passively compensated, and the crown's nest is flexibly connected waves arm assembly, with the guide assembly The floating pulley group being slidably connected, the tourist bus being flexibly connected with the floating pulley group.
As preferred scheme of the present utility model, the Active Compensation cylinder is 2 and is symmetrically distributed in the crown's nest Both sides, the passive compensation cylinder is 2 and is symmetrically distributed between the both sides of the crown's nest and 2 Active Compensation cylinders, 2 Table top of the cylinder body of the individual Active Compensation cylinder and passive compensation cylinder respectively with the crown's nest is fixedly connected, the crown's nest, 2 The median plane of the individual Active Compensation cylinder and 2 passive compensation cylinders is in approximately the same plane, and the floating pulley group is located at 2 The centre of the individual passive compensation cylinder, described 2 described passive compensation the distance between cylinders are more than the size of the tourist bus, 2 The cylinder body of the Active Compensation cylinder by it is universal hinge be arranged on the crown's nest on, the piston rod end of the Active Compensation cylinder with The floating pulley group is connected by bearing pin, and in the compensation course of work, compensation device system is overcome by 2 Active Compensation cylinders Frictional dissipation inside system, so as to improve compensation precision, requires higher drilling condition, described in 2 to be applicable to compensation precision Passive compensation cylinder and Active Compensation cylinder are arranged symmetrically in the both sides of the floating pulley group, at the same 2 passive compensation cylinders it Between spacing be more than the body dimension of the tourist bus, it is to avoid with 2 passive compensation cylinders interference, this kind during tourist bus work Arrangement can also reduce derrick height, reduce center of gravity.
As preferred scheme of the present utility model, it is described wave arm assembly including dead line side Swing Arm, fast line side Swing Arm, Steel wire rope, directive wheel and pinch wheels, one end of dead line side Swing Arm are flexibly connected with the crown's nest by bearing pin, described Dead line side Swing Arm mounting seat is fixedly connected with crown's nest, dead line side Swing Arm is waved by bearing pin with the dead line side Arm mounting seat is flexibly connected, and the other end of dead line side Swing Arm is flexibly connected with the floating pulley group by bearing pin, institute The one end for stating fast line side Swing Arm is flexibly connected with the crown's nest by bearing pin, and fast line side is fixedly connected with the crown's nest Swing Arm mounting seat, fast line side Swing Arm is flexibly connected by bearing pin with the fast line side Swing Arm mounting seat, described fast The other end of rope side Swing Arm is flexibly connected with the floating pulley group by bearing pin, and the directive wheel is waved with the fast line side Arm is bolted to connection, and the directive wheel is used for the motion for limiting the steel wire rope, prevents the steel cable slot disengaging, described Pinch wheels are fixedly connected with the crown's nest, and one end of the wheel shank of the pinch wheels is fixed with the fast line side Swing Arm mounting seat Connection, the other end of the wheel shank of the pinch wheels is connected by pinch wheels mounting seat with the crown's nest table top, the pinch wheels Fast line side for limiting the steel wire rope prevents the steel cable slot disengaging under applying working condition.
As preferred scheme of the present utility model, one end of the steel wire rope is fixedly connected with dead line anchor, through described Dead line side Swing Arm is wrapped on the floating pulley group and tourist bus, is then wrapped in well drilling hoist through fast line side Swing Arm Roller on.The tourist bus is flexibly connected by the steel wire rope with the floating pulley group, and the floating pulley group includes Multiple pulleys, wherein, the tourist bus also includes multiple pulleys, quantity and the floating pulley group phase to the wirerope-winding Match somebody with somebody, the wirerope-winding is wherein.
As preferred scheme of the present utility model, the both sides of the floating pulley group respectively with 2 Active Compensation cylinders, The top of 2 passive compensation cylinders is connected by bearing pin, and the floating pulley group is slidably connected with the rail assembly.
Job description:
When hull rises, the floating pulley group is moved downward relative to the guide assembly, at this moment described passive benefit The volume for repaying cylinder cavity of resorption diminishes, and liquid therein is pressed towards the accumulator so that gas volume compresses in the accumulator;When When hull declines, situation contrast, the floating pulley group is moved upwards relative to the guide assembly so that the accumulation of energy Gas expansion in device, oil is pressed back into the passive compensation cylinder cavity of resorption again.
When making a trip, the floating pulley group is placed on the table top of the crown's nest, by crown-block heave compensator Tension value be transferred to needed for size and connect after drill string lower brill, until drill bit transfers to bottom hole location, after drill bit is bottomed out, after Near the continuous decentralization tourist bus make it that the stroke of the Active Compensation cylinder and passive compensation cylinder is put wherein, therefore, when from slips In when carrying drill string, the piston rod of the Active Compensation cylinder and passive compensation cylinder can be fully retracted into, i.e., described floating pulley group is fixed On the crown's nest, when drill bit reaches shaft bottom and is sitting in shaft bottom, the piston rod of the Active Compensation cylinder and passive compensation cylinder Start to stretch out, the Active Compensation cylinder and the outstanding power for holding drill string of passive compensation cylinder are equal to its tension force, and this just makes to act on brill Power on head(The pressure of the drill)Equal to the difference of drill string weight and the Active Compensation cylinder and passive compensation cylinder tension force, when drill bit is bored downwards When entering, driller continues progressively action well drilling hoist and transfers the tourist bus, so that the Active Compensation cylinder and passive compensation cylinder Stroke maintain wherein point near.
The Tensity size of the crown-block heave compensator is the air pressure in the Active Compensation cylinder and passive compensation cylinder cylinder Or in the accumulator by the oil pressure of pressure-air control determined, the high pressure gas holder of big volume by pipeline directly and institute State the accumulator 1 that crown-block heave compensator communicates to connect, more pressure-airs are filled with accumulator 1, tension force is just Increase;Otherwise air is discharged into air from high pressure gas holder, tension force is reduced by.During normal drilling, by pneumatic control valve and described Gas pressure in accumulator is controlled, to keep Bottom Hole Bit Weight In A or regulation the pressure of the drill.
Handle under down-hole accident or towage operating mode, the Active Compensation cylinder and passive compensation cylinder can be stopped by control valve Work, the floating pulley group is placed on the crown's nest.
Preventer operation etc. is logged well and transferred to underground work such as, it is necessary to keep underground operation tool or device location phase To the stability in shaft bottom, it is required to be on the Active Compensation cylinder, such as fishing, sliding sleeve operation, lower packet, shaft bottom The underground work such as reaming hole, well logging and gravel pack.
It is described it is passive compensation cylinder can independently of the Active Compensation cylinder carry out separate operaton, now the Active Compensation cylinder with It is dynamic, it is not involved in compensating operation.
Compared with prior art, the beneficial effects of the utility model:
The utility model uses newer arrangement, may be such that tourist bus the Active Compensation cylinder and passive compensation cylinder it Between moved, so as to reduce height, weight and the center of gravity of derrick or crown-block heave compensator structure in itself, improve ship The stressing conditions of body.
Brief description of the drawings
Fig. 1 is the utility model front view;
Fig. 2 is the utility model side view;
Fig. 3 is the utility model top view;
Fig. 4 is the utility model floating pulley group front view;
Fig. 5 is the utility model floating pulley group side view;
Fig. 6 is the utility model floating pulley group top view;
Fig. 7 is the utility model dead line side two station schematic diagrames of Swing Arm;
Fig. 8 is the utility model directive wheel front view;
Fig. 9 is the utility model directive wheel side view;
Figure 10 is the utility model directive wheel top view;
Figure 11 is the utility model pinch wheels front view;
Figure 12 is the utility model pinch wheels side view;
Figure 13 is the utility model pinch wheels top view.
Marked in figure:1- accumulators, 2- crown's nests, 3- waves arm assembly, 31- dead lines side Swing Arm, and 32- fast lines side is shaken Swing arm, 33- directive wheels, 34- pinch wheels, 35- steel wire ropes, 4- guide assemblies, 5- Active Compensation cylinders, 6- passively compensates cylinder, 7- Floating pulley group, 8- tourist buses.
Embodiment
The utility model is described in further detail with reference to embodiment and embodiment, but should not be by this The scope for being interpreted as the utility model aforementioned body is only limitted to following embodiment, all to be realized based on the utility model content Technology belongs to scope of the present utility model.
As shown in Figure 1, Figure 2 and Figure 3, the utility model includes accumulator 1, crown's nest 2, waves arm assembly 3, guide assembly 4th, Active Compensation cylinder 5, passive compensation cylinder 6, floating pulley group 7 and tourist bus 8, accumulator 1 are fixedly connected with day chassis 2, Swing Arm Assembly 3 is flexibly connected with crown's nest 2 and floating pulley group 7 respectively, and guide assembly 4 is fixedly connected with crown's nest 2, Active Compensation cylinder 5 and the cylinder body of passive compensation cylinder 6 be fixedly connected by flange with crown's nest 2, be connected and controlled with hydraulic station by hydraulic line Worked in the presence of system processed, the top of Active Compensation cylinder 5 and passive compensation cylinder 6 is fixedly connected with the two ends of floating pulley group 7, Tourist bus 8 is flexibly connected with floating pulley group 7, waves arm assembly 3 by dead line side Swing Arm 31, fast line side Swing Arm 32, directive wheel 33rd, pinch wheels 34 and steel wire rope 35 are constituted, and one end of steel wire rope 35 is connected with dead line anchor, then pass through dead line side Swing Arm It is wrapped in after 31 in floating pulley group 7 and tourist bus 8, finally by the roller that well drilling hoist is wrapped in after fast line side Swing Arm 32 On, tourist bus is arranged on the bottom of crown's nest 2.
The pulley deflection certain angle of floating pulley group 7 is can be seen that from Fig. 4-Fig. 6, to facilitate the winding of steel wire rope simultaneously Ensure that tourist bus position is not skewed, the both sides of floating pulley group 7 are fixed with Active Compensation cylinder 5 and the passive top for compensating cylinder 6 respectively Connection, Active Compensation cylinder 5 or passive compensation cylinder 6 operationally drives floating pulley group 7 carried out on rail assembly 4 above and below cunning Dynamic, the front and back end of floating pulley group 7 is flexibly connected with dead line side Swing Arm 31 and fast line side Swing Arm 32 respectively, floating pulley group 7 raising and lowering for sliding up and down drive dead line side Swing Arm 31 and fast line side Swing Arm 32, as can be seen from Figure 7.
The end of directive wheel 33 and pinch wheels 34 is can be seen that from Fig. 8 to Figure 13 roller structure, and the structure can be kept away Exempt from steel wire rope 35 and take off groove, and reduce concussion of the steel wire rope 35 in motion process.

Claims (5)

1. half active crown-block heave compensator, it includes:Crown's nest, the accumulator being fixedly connected with the crown's nest, guide rail Component, Active Compensation cylinder and cylinder is passively compensated, and the crown's nest is flexibly connected waves arm assembly, slided with the guide assembly The floating pulley group of dynamic connection, the tourist bus being flexibly connected with the floating pulley group.
2. half active crown-block heave compensator according to claim 1, it is characterised in that:The Active Compensation cylinder is 2 Both sides that are individual and being symmetrically distributed in the crown's nest, the passive compensation cylinder is 2 and is symmetrically distributed in the two of the crown's nest Between side and 2 Active Compensation cylinders, the cylinder body of 2 Active Compensation cylinders and passive compensation cylinder respectively with the crown's nest Table top be fixedly connected, the crown's nest, 2 Active Compensation cylinders and 2 it is described it is passive compensation cylinder median planes same In plane, the floating pulley group is located at the centres of 2 passive compensation cylinders, 2 described passive compensation the distance between cylinders More than the size of the tourist bus.
3. half active crown-block heave compensator according to claim 2, it is characterised in that:The arm assembly that waves includes Dead line side Swing Arm, fast line side Swing Arm, steel wire rope, directive wheel and pinch wheels, one end of dead line side Swing Arm with it is described Crown's nest is flexibly connected, and the other end of dead line side Swing Arm is flexibly connected with the floating pulley group, and the fast line side is shaken One end of swing arm is flexibly connected with the crown's nest, and the other end of fast line side Swing Arm connects with the floating pulley group activity Connect, the directive wheel is fixedly connected with fast line side Swing Arm, and the pinch wheels are fixedly connected with the crown's nest.
4. half active crown-block heave compensator according to claim 3, it is characterised in that:One end of the steel wire rope with Dead line anchor is fixedly connected, and is wrapped in through dead line side Swing Arm in the floating pulley group and tourist bus, then through described Fast line side Swing Arm is wrapped on the roller of well drilling hoist, and the tourist bus passes through the steel wire rope and the floating pulley group activity Connection.
5. half active crown-block heave compensator according to claim 4, it is characterised in that:The two of the floating pulley group Top of the side respectively with 2 Active Compensation cylinders, 2 passive compensation cylinders is connected by bearing pin, the floating pulley group Middle part be slidably connected with the guide assembly.
CN201720150622.1U 2017-02-20 2017-02-20 Half active crown-block heave compensator Active CN206571442U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720150622.1U CN206571442U (en) 2017-02-20 2017-02-20 Half active crown-block heave compensator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720150622.1U CN206571442U (en) 2017-02-20 2017-02-20 Half active crown-block heave compensator

Publications (1)

Publication Number Publication Date
CN206571442U true CN206571442U (en) 2017-10-20

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106837207A (en) * 2017-02-20 2017-06-13 四川宏华石油设备有限公司 Half active crown-block heave compensator
CN108716371A (en) * 2018-04-13 2018-10-30 宝鸡石油机械有限责任公司 The reverse experimental rig of compensation function and its control method of drill string heave compensation system
CN109025854A (en) * 2018-09-28 2018-12-18 西南石油大学 A kind of mounting structure of the mechanically driver type crown-block heave compensator directive wheel for ocean platform drilling well

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106837207A (en) * 2017-02-20 2017-06-13 四川宏华石油设备有限公司 Half active crown-block heave compensator
CN108716371A (en) * 2018-04-13 2018-10-30 宝鸡石油机械有限责任公司 The reverse experimental rig of compensation function and its control method of drill string heave compensation system
CN108716371B (en) * 2018-04-13 2020-04-24 宝鸡石油机械有限责任公司 Compensation function reverse test device of drill string heave compensation system and control method thereof
CN109025854A (en) * 2018-09-28 2018-12-18 西南石油大学 A kind of mounting structure of the mechanically driver type crown-block heave compensator directive wheel for ocean platform drilling well

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