CN202181865U - Continuous oil pipe heave compensation device - Google Patents
Continuous oil pipe heave compensation device Download PDFInfo
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- CN202181865U CN202181865U CN2011202950814U CN201120295081U CN202181865U CN 202181865 U CN202181865 U CN 202181865U CN 2011202950814 U CN2011202950814 U CN 2011202950814U CN 201120295081 U CN201120295081 U CN 201120295081U CN 202181865 U CN202181865 U CN 202181865U
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Abstract
The utility model discloses a continuous oil pipe heave compensation device comprising a oil pipe winding drum arranged on a floating body, and a lifting device used for lifting the load hung on an oil pipe, a loading suspension point is arranged between the oil pipe winding drum and the load and used for guiding the oil pipe guided from the oil pipe winding drum to the traction direction needed by the load, the lifting device is connected with a measuring device which is used for determining the current undulatory motion, and connected with a central controller, the floating body is provided with a guiding pipe mechanism which can adjust the length of the oil pipe between the oil pipe winding drum and the loading suspension point, the guide pipe mechanism is used for preserving and retracting the length of the oil pipe section between the oil pipe winding drum and the loading suspension point, and when the heave compensation is realized, the tension force between the oil pipe winding drum and the loading suspension point is kept constant, so that the fatigue damage caused by the reciprocating winding and unwinding of the oil pipe winding drum is avoided, and the service life of the oil pipe can be prolonged.
Description
Technical field
But the utility model relates to a kind of compensation arrangement of heave buoyancy aid overhanging cable rope, especially in the oil-well drilling equipment field, is arranged on the coiled tubing heave compensator on the marine drilling buoyancy aid.
Background technology
Increasingly mature along with the fast development of marine petroleum exploitation and coiled tubing technology, existing increasing at present coiled tubing rig is used and floating drilling platform.Floating drilling platform produces heave movement periodically up and down under the effect of wave; The heave movement of floating drilling platform causes whole well system to produce heave movement up and down thereupon; Acceleration that this periodicity heave movement brings has increased tension force suffered on the coiled tubing; If coiled tubing is operated near its limit allowable stress, may causes the tension force of coiled tubing to exceed its allowable stress, thereby cause the destruction of coiled tubing.
In addition, this periodicity heave movement also can cause the instability of the pressure of the drill, thereby is unfavorable for creeping into; Even the damage drilling tool, therefore, must increase heave compensator on the coiled tubing drilling system at ocean platform; Offset the acceleration that heave movement brings, the destruction that prevents coiled tubing.
Application number is: 200910203462.2, the applying date is: the patent of invention on May 21st, 2009 " having the initiatively crane control system of fluctuation compensation " discloses a kind of initiatively crane control system of fluctuation compensation that has; Be used to be arranged on the crane on the buoyancy body; Said crane comprises and is used to promote the lifting gear that is suspended on the load on the rope; Said crane control system has: measurement mechanism, and said measurement mechanism is confirmed current undulatory motion according to sensing data; Prediction unit, said prediction unit are predicted the motion in future of load suspension point with reference to determined current undulatory motion and with reference to the undulatory motion model; And load path control, said load path control push up based on institute survey the load suspension point motion and activate the lifting gear of said crane, compensate the motion that load is caused by wave at least in part thus.Pass through prediction unit; Can consider the motion in future of load suspension point based on determined current undulatory motion and undulatory motion model; Thereby when activating lifting gear, load suspension point this moves through the variation of rope lengths and is compensated, and load is divided a word with a hyphen at the end of a line along expectation path.But still there is following weak point in it: crane control system is put toward rewinding under the traction of cord segment at lifting gear between rope drum and the load suspension point when carrying out the active fluctuation compensation, is prone to rope is caused fatigue damage; Simultaneously, let slip at volume that the suffered tension force of rope increases greatly in the journey, rope is prone to because of suffered tension force very easily exceeds its allowable stress rope damaged.Especially in field of petroleum exploitation, the intensity of the oil pipe that is adopted on the coiled tubing rig is lower, very easily causes stress fatigue or damage because of pulsating stress and stress are excessive.
The utility model content
The purpose of the utility model provides a kind of when the active fluctuation compensation, and coiled tubing is fully through putting and in compensation process toward rewinding on the coiled tubing reel, and the suffered tension force of coiled tubing is heave compensator more uniformly.
To achieve these goals; The technical scheme that the utility model adopts is: a kind of coiled tubing heave compensator; Comprise the oil pipe reel that is arranged on the buoyancy aid, and be used to promote the lifting gear that is suspended on the load on the oil pipe, be provided with the load suspension point between said oil pipe reel and the load; Said load suspension point will be in order to will be directed to the required lead of load from the oil pipe that the oil pipe reel is derived; Said lifting gear is connected with measurement mechanism, and said measurement mechanism is in order to confirm current undulatory motion, and said measurement mechanism links to each other with central controller; Said buoyancy aid is provided with conduit mechanism, the length of oil pipe between said conduit mechanism's scalable oil pipe reel and the load suspension point.
Said conduit mechanism comprises cantilever and conduit device, and said cantilever one end and buoyancy aid are hinged, and said conduit device is arranged on the free end of cantilever, is provided with conduit institutional adjustment oil cylinder between said cantilever and buoyancy aid.Adopt such structure, hinged through cantilever and buoyancy aid, under the driving of guiding mechanism adjustment oil cylinder; The conduit device that is positioned at cantilever free end is with cantilevered swing; Make the conduit device to contact, and can promote oil pipe, regulate the length of the oil pipe section between oil pipe reel and load suspension point with oil pipe.Wherein, the conduit device can be the pulley that is hinged on cantilever free end.
Said oil pipe is provided with injection head, and said buoyancy aid is provided with the injection head leading truck, is provided with injection head adjustment oil cylinder between said buoyancy aid and injection head, and said injection head can vertically relatively move at the injection head leading truck.Adopting such structure, is the load suspension point with the injection head, and oil pipe realizes being directed to the required lead of load through injection head, and matches with injection head down at the injection head leading truck, realization relatively moving vertically.
Said cantilever is coaxial hinged with the oil pipe reel.Adopt such structure, can make conduit mechanism when regulating the length of the oil pipe section between oil pipe reel and load suspension point, conduit mechanism is fixed to the amplification of the thrust that oil pipe applies, and further increases the durability of oil pipe.
Said measurement mechanism is an acceleration transducer.Adopt such structure, the hull heave information measured according to acceleration transducer feeds back to central processing unit and handles and compensate.
Said conduit institutional adjustment oil cylinder links to each other with proportional reversing valve, and said proportional reversing valve is connected to fuel tank, and the control end of said proportional reversing valve links to each other with central controller.Adopt such structure, the heave signal of buoyancy aid drives conduit mechanism through first solenoid operated directional valve after treatment and compensates.When buoyancy aid descends; Tubing length between oil pipe reel and load increases; In order to keep the suffered tension force of oil pipe and basicly stable at the tubing length of down-hole; Proportional reversing valve drives the conduit mechanism urges injection head also traction oil pipe that rises, and makes the length increase of the oil pipe section between oil pipe reel and load suspension point, the tension force that the balance oil pipe is suffered and be positioned at the tubing length of down-hole; This moment, the oil pipe that is positioned at the down-hole curled because of the length increase causes oil pipe if do not adopt guiding device that oil pipe is compensated, and damaged oil pipe thereby very easily bump with oil pipe object on every side;
When going up and down on the buoyancy aid; The contraction in length of the oil pipe between oil pipe reel and load; In order to keep the suffered tension force of oil pipe and basicly stable at the tubing length of down-hole; The passing ratio reversal valve keeps or switching-over drives that conduit mechanism urges injection head rises and the traction oil pipe to valve, and the length of the oil pipe section between oil pipe reel and load suspension point is reduced, the tension force that the balance oil pipe is suffered and be positioned at the tubing length of down-hole; This moment, the oil pipe that is positioned at the down-hole was die-offed because of length, and the load of drilling well head is mentioned, and influences operate as normal if do not adopt guiding device that oil pipe is compensated; Simultaneously, tensile deformation takes place when receiving pulling force in oil pipe, when pulling force surpasses the allowable stress of oil pipe, very easily damages oil pipe and even oil pipe is broken.
Be provided with bidirectional balanced valve between said proportional reversing valve and the conduit institutional adjustment oil cylinder; Be provided with first overflow valve between said proportional reversing valve and fuel tank; Be provided with first hydraulic pump between said first overflow valve and the proportional reversing valve; Be provided with one way valve between said first overflow valve and the proportional reversing valve, said first hydraulic pump is provided with first motor that links to each other with central controller.Adopt such structure, can make compensation process more steady, further increase the life-span and the durability of oil pipe.
Said injection head adjustment oil cylinder links to each other with solenoid operated directional valve, and said solenoid operated directional valve is connected to fuel tank, and the control end of said solenoid operated directional valve links to each other with central controller; Said injection head adjustment oil cylinder links to each other with proportion magnetic valve, and said proportion magnetic valve links to each other with fuel tank, and the control end of said proportion magnetic valve links to each other with central controller; Adopt such structure, can be further the oil pipe of section between injection head and the load be compensated, the suffered tension force of oil pipe of section between injection head and the load is being changed in the scope by a small margin.
Said proportion magnetic valve comprises first input end, second input, first output and second output and control end; The rod chamber of said injection head adjustment oil cylinder links to each other with second input of proportion magnetic valve; The rodless cavity of said injection head adjustment oil cylinder links to each other with first output of proportion magnetic valve, and the first input end of said proportion magnetic valve all links to each other with fuel tank with second output.Adopt such structure, can make the compensation process of section between injection head and the load more steady, further increase the life-span and the durability of oil pipe.
Be connected with the first accumulator group on the rodless cavity of said injection head adjustment oil cylinder, be connected with the second accumulator group on the rod chamber of said injection head adjustment oil cylinder, the control end of the said first accumulator group and the second accumulator group all is connected with central controller.Adopt such structure, can make between injection head and the load compensation process of section more steady, further increase the life-span and the durability of oil pipe, pressure oscillation that simultaneously can also absorbing high-frequency.
Be connected with first pressure sensor on the rodless cavity of said injection head adjustment oil cylinder, be connected with second pressure sensor on the rod chamber of said injection head adjustment oil cylinder, said first pressure sensor all is connected with central controller with second pressure sensor.Adopt such structure, can make the motion of injection head adjustment oil cylinder more accurate, make the compensation process of section between injection head and the load more steady, further increase the life-span and the durability of oil pipe.
Be connected with first proportional pressure control valve on the rodless cavity of said injection head adjustment oil cylinder; Be connected with second proportional pressure control valve on the rod chamber of said injection head adjustment oil cylinder, the control end of said first proportional pressure control valve and second proportional pressure control valve all is connected with central controller.Adopt such structure, hydraulic system is carried out overload protection, further increase the application life and the durability of oil pipe through first overflow valve and second overflow valve.
Be provided with second hydraulic pump between the first input end of said proportion magnetic valve and the fuel tank; Said second hydraulic pump links to each other with second motor; The control end of said second motor links to each other with central controller; Be parallel with second overflow valve between the said proportion magnetic valve and second hydraulic pump, be provided with one way valve between said second overflow valve and the proportion magnetic valve.Adopt such structure, hydraulic control system is more stable.
All be parallel with one way valve on said first proportional pressure control valve and second proportional pressure control valve.
In sum, owing to adopted technique scheme, the beneficial effect of the utility model is:
1, in the heave compensation process, reducing the direct mode of rotating the oil pipe reel of employing compensates; The conduit mechanism bigger through radius of curvature realizes compensation; Avoid oil pipe oil pipe when directly rotating oil pipe reel folding and unfolding compensation folding, thereby increased the application life of oil pipe.
2, in prior art, only oil pipe is carried out direct folding and unfolding through the oil pipe reel; Through conduit mechanism the length of oil pipe section between oil pipe reel and the load suspension point is reserved and folding and unfolding; When realizing the sedimentation compensation, keep the tensile force of oil pipe section between oil pipe reel and the load suspension point constant.
3, when wave hour, the amplitude of heave compensation is less, can keep under the situation that the oil pipe reel do not rotate, the length of directly regulating oil pipe through conduit mechanism realizes compensation, has avoided that oil pipe is back and forth folding on the oil pipe reel to cause fatigue damage; When wave is big; The amplitude of heave compensation is bigger; Only the curtailment through conduit mechanism adjusting oil pipe compensates with realization, at this moment, at first cushions compensation through conduit mechanism; Oil pipe drives further compensation of oil pipe reel rotation in buffering compensation back, and the impact in the time of can avoiding heave acts directly on the oil pipe.
Description of drawings
The utility model will explain through example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is the structural representation of the utility model coiled tubing heave compensator;
Fig. 2 is the structural representation of the utility model coiled tubing heave compensator when compensating;
Fig. 3 is the lateral view of the utility model coiled tubing heave compensator;
Fig. 4 is the hydraulic system sketch map of the utility model coiled tubing heave compensator;
Fig. 5 is the control sketch of the utility model coiled tubing heave compensator.
Wherein: oil pipe reel-1; Oil pipe-2; Conduit device-3; Conduit institutional adjustment oil cylinder-4; Buoyancy aid-5; Injection head leading truck-6; Injection head-7; Injection head adjustment oil cylinder-8; Cantilever-9; Measurement mechanism-10; Central controller-11; First motor-21; First hydraulic pump-22; Fuel tank-23; First overflow valve-24; One way valve-25; Proportional reversing valve-26; Bidirectional balanced valve-27; Second motor-28; Second hydraulic pump-29; First pressure sensor-301; Second pressure sensor-302; Solenoid operated directional valve-31; The first accumulator group-321; The second accumulator group-322; Second overflow valve-33; Proportion magnetic valve-34; First proportional pressure control valve-351; Second proportional pressure control valve-352; Conduit mechanism-36.
The specific embodiment
Disclosed all characteristics in this manual, or the step in disclosed all methods or the process except mutually exclusive characteristic and/or the step, all can make up by any way.
Disclosed arbitrary characteristic in this manual (comprising any accessory claim, summary and accompanying drawing) is only if special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, only if special narration, each characteristic is an example in a series of equivalences or the similar characteristics.
To shown in Figure 5, the utility model coiled tubing heave compensator comprises oil pipe reel 1 and conduit mechanism 36, the length of oil pipe 2 between conduit mechanism 36 scalable oil pipe reels 1 and the load suspension point like Fig. 1; Oil pipe reel 1 is arranged on the buoyancy aid 5, and the oil pipe 2 in the oil pipe reel 1 is realized guiding via conduit mechanism 36, and oil pipe 2 is provided with injection head 7; Wherein, injection head 7 is the load suspension point between oil pipe reel 1 and oil pipe 2, and is preferred; The load suspension point here also can be fixed pulley, movable pulley etc.; With the injection head that is applied in the drilling well field 7 as the load suspension point, can be under the sea during drilling well, with drill bit as load; The moment of torsion of drill bit is provided by the power drilling tool of down-hole, and the pressure of the drill provides by injecting 7.The coiled tubing of operation on the sea is continuous thin-wall circular tube, and coiled tubing 2 is connected with the power drilling tool of down-hole, becomes the load of whole device.At non-drillng operation during the stage; Above-mentioned coiled tubing 2 normally is wrapped on the oil pipe reel 1, and before beginning drilling well work, the oil pipe 2 that needs will be wrapped on the oil pipe reel 1 is drawn on the injection head 7; After drilling well is accomplished, again oil pipe 2 is recovered on the oil pipe reel 1 from injection head 7.Be connected with injection head leading truck 6 on the buoyancy aid 5, but injection head 7 relatively moves with in the vertical direction after injection head leading truck 6 matches.Injection head 7 will be in order to being directed to the required lead of load from the oil pipe 2 that oil pipe reel 1 is derived; Injection head 7 links to each other with an end of injection head adjustment oil cylinder 8; The other end of injection head adjustment oil cylinder 8 is connected with buoyancy aid 5, and injection head 7 can move up and down at the driving lower edge injection head leading truck 6 that injection head is adjusted oil cylinder 8.
Conduit institutional adjustment oil cylinder 4 links to each other with conduit organization hydraulic pressure control system; Conduit organization hydraulic pressure control system comprises fuel tank 23, and fuel tank 23 is connected with first hydraulic pump, 22, the first hydraulic pumps 22 and is provided with first motor 21; First motor 21 drives first hydraulic pump 22 with the pressurization of the hydraulic oil in the fuel tank 23 output; The output of first hydraulic pump 22 is connected with the output that is provided with one way valve 25, the first hydraulic pumps 22 between proportional reversing valve 26, the first hydraulic pumps 22 and the proportional reversing valve 26 and links to each other with the first input end of proportional reversing valve 26; First output of proportional reversing valve 26 links to each other with conduit institutional adjustment oil cylinder 4; The output of conduit institutional adjustment oil cylinder 4 links to each other with second input of proportional reversing valve 26, and second output of proportional reversing valve 26 links to each other with fuel tank 23, constitutes closed loop.
Preferably, between proportional reversing valve 26 and conduit institutional adjustment oil cylinder 4, be provided with bidirectional balanced valve 27; First output of proportional reversing valve 26 links to each other with the first input end of bidirectional balanced valve 27; First output of bidirectional balanced valve 27 links to each other with the input of conduit institutional adjustment oil cylinder 4; The output of conduit institutional adjustment oil cylinder 4 links to each other with second input of bidirectional balanced valve 27, second output of bidirectional balanced valve 27 link to each other proportional reversing valve 26 second input link to each other.Preferably, between second output of the output of first hydraulic pump 22 and proportional reversing valve 26, be provided with first overflow valve 24.
Accomplish the adjustment of conduit mechanisms through one way valve 25, proportional reversing valve 26, bidirectional balanced valve 27 back supplying duct institutional adjustment oil cylinders 4 after first hydraulic pump 22 that conduit organization hydraulic pressure control system is driven by first motor 21 pressurizes the hydraulic oil in the fuel tank 23, the main effect of first overflow valve 24 is maximum working pressures of restriction system.Passing ratio reversal valve 26 is realized the control to conduit institutional adjustment oil cylinder 4, and then realizes that injection head 7 and 1 oil pipe 2 tension force of oil pipe reel keep, and accomplish the heave compensation work of oil pipe 2.
Injection head hydraulic pressure Adjustment System comprises second hydraulic pump 29 that links to each other with fuel tank 23; Second hydraulic pump 29 is provided with second motor 28; Second motor 28 drives second hydraulic pump 29 with the pressurization of the hydraulic oil in the fuel tank 23 output; The output of second hydraulic pump 29 links to each other with the first input end of proportion magnetic valve 34, and first output of proportion magnetic valve 34 links to each other with the input of injection head adjustment oil cylinder 8, and the output of injection head adjustment oil cylinder 8 links to each other with second input of proportion magnetic valve 34; Second output of proportion magnetic valve 34 links to each other with fuel tank 23, constitutes closed loop.Wherein, the keying degree of proportion magnetic valve 34 adjustable, have an equilibrium function.
Preferably; Between the input that first output and the injection head of proportion magnetic valve 34 are adjusted oil cylinder 8, be connected with first proportional pressure control valve 351 and solenoid operated directional valve 31 successively; First proportional pressure control valve 351 and solenoid operated directional valve 31 all link to each other with central controller 11; Wherein, solenoid operated directional valve 31 is the reversal valves that can realize the completely open and close function, on first proportional pressure control valve 351, is parallel with one way valve 25.Between second input of the output of injection head adjustment oil cylinder 8 and proportion magnetic valve 34, be provided with second proportional pressure control valve, 352, the second proportional pressure control valves 352 and link to each other, on second proportional pressure control valve 352, be parallel with one way valve 25 with central controller 11.Preferably, the input at injection head adjustment oil cylinder 8 is provided with the first accumulator group 321 and first pressure sensor 301; Output at injection head adjustment oil cylinder 8 is provided with the second accumulator group 322 and second pressure sensor 302; The first accumulator group 321, the second accumulator group 322, first pressure sensor 301 and second pressure sensor 302 all link to each other with central controller 11.Preferably, between fuel tank 23 and hydraulic pressure delivery side of pump, be provided with second overflow valve 33.
Second hydraulic pump 29 is the compensated pump of injection head adjustment oil cylinder 8; For injection head adjustment oil cylinder 8 provides pressure oil; Second motor 28 drives second hydraulic pump 29 high-voltage oil liquid is supplied with injection head adjustment oil cylinder 8 through one way valve 25 and proportion magnetic valve 34 backs; Wherein injection head adjustment oil cylinder 8 is that oil cylinder after being connected by two rod chambers merges and forms, and the input of injection head adjustment oil cylinder 8 and the second accumulator group 322, second pressure sensor 302, one way valve 25, second proportional pressure control valve 352 link to each other and then link to each other with second input port of proportion magnetic valve 34;
After being connected, the rodless cavity of two injection head adjustment oil cylinders 8 links to each other with solenoid operated directional valve 31 1 ends; The reversal valve other end and pressure sensor, the first accumulator group 321, one way valve 25, first proportional pressure control valve 351 link to each other, and one way valve 25 and first proportional pressure control valve, 351 parallel connection backs link to each other with first output of proportion magnetic valve 34.
According to the heave compensation principle, when buoyancy aid 5 rose, bucking-out system should be offset buoyancy aid 5 oil pipe 2 that causes that rises and receive tensile, and promptly oil pipe 2 should move downward under the drive of injection head adjustment oil cylinder 8.Lifting gear is connected with measurement mechanism 10 like first motor 21 and second motor 28, and measurement mechanism 10 is confirmed the state of current undulatory motion, and is preferred, and measurement mechanism 10 can be arranged in the middle part of the reaching all around of buoyancy aid 5.When measurement mechanism 10 detected buoyancy aid 5 rising signals is arranged, checkout gear passed to central controller 11 with the signals such as acceleration that record and handles, and starts the main motor of two oil pumps simultaneously, i.e. first motor 21 and second motor 28.Because buoyancy aid 5 drives on the oil pipe 2 and moves; This moment, piston rod was regained according to the pressure balance relation, and the rod chamber internal pressure should reduce; This moment, the second accumulator group 322 was adjusted the rod chamber topping up of oil cylinder 8 to injection head; Pressure oil is through the P → B oil circuit of proportion magnetic valve 34 simultaneously, and promptly the oil circuit between first input end to the second input of proportion magnetic valve 34 drives injection head 7 through the rod chamber that gets into injection head adjustment oil cylinders 8 behind the one way valve 25 and moves down; Central controller 11 comes that injection head adjustment oil cylinder 8 is carried out real-time regulated and realizes compensation control through the duty that the signal of gathering pressure sensor comes control ratio electromagnetic valve 34; Simultaneously; The rodless cavity pressure of injection head adjustment oil cylinder 8 raises; The first accumulator group 321 is carried out accumulation of energy, rise to the setting pressure of first proportional pressure control valve 351 when the rodless cavity internal pressure after, first proportional pressure control valve 351 is opened overflows; Fluid is through the A → T oil circuit of proportion magnetic valve 34, and promptly first output → second output oil circuit flows back to fuel tank 23.The first accumulator group 321 and the second accumulator group 322 simultaneously can also absorbing high-frequency pressure oscillation.
When descending under the effect of buoyancy aid 5 at wave, bucking-out system should be offset buoyancy aid 5 oil pipe 2 that causes that descends and descend with buoyancy aid 5, and oil pipe 2 moves upward under the drive of injection head adjustment oil cylinder 8.When measurement mechanism 10 detected buoyancy aid 5 dropping signal is arranged, measurement mechanism 10 passed to central controller 11 with the signals such as acceleration that record and handles, and starts the main motor of two oil pumps simultaneously, i.e. first motor 21 and second motor 28.Because buoyancy aid 5 drives oil pipe 2 and moves down; Concern according to pressure balance this moment; The first accumulator group 321 is to the rodless cavity topping up of injection head adjustment oil cylinder 8; Rodless cavity bar cavity pressure reduces, and the piston rod of injection head adjustment oil cylinder 8 stretches out, and the high-voltage oil liquid that the while hydraulic pump is got is through the P → A oil circuit of one way valve 25 passing ratio electromagnetic valves 34; Be first input end → first output oil circuit, again through the rodless cavity fuel feeding of one way valve 25 to injection head adjustment oil cylinder 8, be the first accumulator group, 321 topping ups simultaneously; The rod chamber pressure of injection head adjustment this moment oil cylinder 8 rises; 322 accumulation of energys of the second accumulator group; Rise to the setting pressure of second proportional pressure control valve 352 as the bar cavity pressure after; Second proportional pressure control valve 352 is opened overflow, and fluid is through the B → T oil circuit of proportion magnetic valve 34, and promptly second input → second output oil circuit flows back to fuel tank 23.The first accumulator group 321, the second accumulator group 322 simultaneously can also absorbing high-frequency pressure oscillation.
Because the piston rod of injection head adjustment oil cylinder 8 stretches out; In order to keep the tensile force of 1 on injection head 7 and oil pipe reel; The piston rod of conduit institutional adjustment this moment oil cylinder 4 is regained; The hydraulic oil of being got by first hydraulic pump 22 passes through one way valve 25, proportional reversing valve 26, the bidirectional balanced valve 27 back rod chambers that get into conduit institutional adjustment oil cylinders 4, realizes that conduit mechanism 36 moves down.The displacement that conduit mechanism 36 moves down is that conduit institutional adjustment oil cylinder 4 strokes are that passing ratio reversal valve 26 is controlled, and the working pressure range of conduit institutional adjustment oil cylinder 4 is realized through adjusting first overflow valve 24.
Control section mainly comprises central controller 11 and measurement mechanism 10, and measurement mechanism 10 passes to detected signal element and after central controller 11 is analyzed oil pipe 2 carried out heave compensation.Central controller 11 is mainly used in and calculates and send instruction.Each parts links to each other in central controller 11 and conduit organization hydraulic pressure control system and the injection head hydraulic pressure Adjustment System; Central controller 11 comes position and the openings of sizes of control ratio reversal valve 26 to come that injection head adjustment oil cylinder 8 is carried out real-time regulated through the signal of gathering pressure sensor to reach compensation control; Central controller 11 links to each other with measurement mechanism 10; Measurement mechanism 10 is mainly used in measurement and changes the physical parameters such as acceleration that produced because of buoyancy aid 5 heaves, and measurement mechanism 10 passes to central controller 11 with the signals such as acceleration that record and handles.
The working method of the utility model oil pipe heave compensator is following: when doing heave movement under the effect of buoyancy aid 5 at wave; Buoyancy aid 5 measurement mechanisms 10 pass to central controller 11 with detection signal; After central controller 11 carries out the signal operation processing; The aperture position of passing ratio electromagnetic valve 34 changes to be realized injection head adjustment oil cylinder 8 displacements control, thereby has accomplished the compensation of the heave movement that oil pipe 2 in the work is carried out indirectly.The control of 26 pairs of conduit institutional adjustments of passing ratio reversal valve oil cylinder 4 simultaneously realizes that 1 oil pipe 2 tension force of injection head 7 to oil pipe reel keep, and accomplish the heave compensation work of oil pipe 2.
When buoyancy aid 5 was done ascending motion under wave action, the piston rod of injection head adjustment oil cylinder 8 was regained, and moves downward together with oil pipe 2 relative buoyancy aids 5 thereby drive injection head 7; Meanwhile, conduit institutional adjustment oil cylinder 4 piston rods stretch out, and conduit mechanism 36 is ejected; Thereby upwards jack-up is next with oil pipe 2; Can guarantee like this that when injection head 7 moves downward oil pipe reel 1 need not be regained oil pipe 2, thereby has kept the tensile force of 7 oil pipes 2 of oil pipe reel 1 to injection head constant.
When buoyancy aid 5 was done descending motion under wave action, the piston rod of injection head adjustment oil cylinder 8 stretched out, and moves upward together with oil pipe 2 relative buoyancy aids 5 thereby drive injection head 7; Meanwhile, conduit institutional adjustment oil cylinder 4 piston rods are regained, and have also kept the tensile force of 7 oil pipes 2 of oil pipe reel 1 to injection head constant; Conduit mechanism 36 is pulled back; The oil pipe 2 that ejects is slowly put down, can guarantee like this when injection head 7 moves upward, oil pipe reel 1 need not be emitted oil pipe 2.
Injection head drive unit and oil pipe reel 1 drive unit have neither part nor lot in compensation in whole process, oil pipe 2 can not prolong the application life of oil pipe 2 because of owing to the injection head drive unit is put the fatigue damage that causes toward rewinding yet.
Injection head adjustment oil cylinder 8 moves down and has caused intersegmental oil pipe 2 tensile forces of injection head 7 to cylinder to reduce; Oil pipe 2 is loosening; In order to overcome this phenomenon; In 8 actions of injection head adjustment oil cylinder; The unlatching of central controller 11 control first motor 21, hydraulic oil stretch out the piston rod of conduit institutional adjustment oil cylinder 4 after through one way valve 25, proportional reversing valve 26, bidirectional balanced valve 27, and oil pipe remains the tensile force of the oil pipe 2 of 7 of oil pipe reel 1 and injection heads under the effect of conduit mechanism 36.The displacement of conduit institutional adjustment oil cylinder 4 is that position and the openings of sizes through central controller 11 control ratio direction valves decides.
When hydraulic power and control system dead electricity; Solenoid operated directional valve 31 resets under spring action; Cut off the oil circuit of 8 of the first accumulator group 321 and injection head adjustment oil cylinders, play the loss protecting effect, guarantee that injection head adjustment oil cylinder 8 injection head adjustment oil cylinder 8 under the system cut-off situation keeps original position.
Like this, in whole compensating motion process, compensating motion is mainly controlled injection head adjustment oil cylinder 8 and is realized with conduit institutional adjustment oil cylinder 4.Injection head adjustment oil cylinder 8 can compensate the heave movement that wave causes at vertical direction, and the then main tensile force of oil pipe reel 1 and 7 oil pipes 2 of injection head that in whole compensation process, keeps of conduit institutional adjustment oil cylinder 4 remains constant.
When wave hour, the amplitude of heave compensation is less, can keep under the situation that oil pipe reel 1 do not rotate, the length of directly regulating oil pipes 2 through conduit mechanism 36 realizes compensation, has avoided that oil pipe 2 is back and forth folding on oil pipe reel 1 to cause fatigue damage.
When wave is big; The amplitude of heave compensation is bigger; Only the curtailment through conduit mechanism 36 adjusting oil pipes 2 compensates with realization, at this moment, at first cushions compensation through conduit mechanism 36; Oil pipe 2 drives further compensation of oil pipe reel 1 rotation in buffering compensation back, and the impact in the time of can avoiding heave acts directly on the oil pipe.
The utility model is not limited to the aforesaid specific embodiment.The utility model expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (10)
1. coiled tubing heave compensator; Comprise the oil pipe reel (1) that is arranged on the buoyancy aid (5); And be used for promoting the lifting gear that is suspended on the load on the oil pipe (2), being provided with the load suspension point between said oil pipe reel (1) and the load, said load suspension point will be in order to being directed to the required lead of load from the oil pipe (2) that oil pipe reel (1) is derived; Said lifting gear is connected with measurement mechanism (10); Said measurement mechanism (10) links to each other with central controller (11), it is characterized in that: said buoyancy aid (5) is provided with conduit mechanism (36), the length of oil pipe (2) between said conduit mechanism (36) scalable oil pipe reel (1) and the load suspension point.
2. coiled tubing heave compensator according to claim 1; It is characterized in that: said conduit mechanism (36) comprises cantilever (9) and conduit device (3); Said cantilever (9) one ends and buoyancy aid (5) are hinged; Said conduit device (3) is arranged on the free end of cantilever (9), is provided with conduit institutional adjustment oil cylinder (4) between said cantilever (9) and buoyancy aid (5).
3. coiled tubing heave compensator according to claim 1; It is characterized in that: said oil pipe (2) is provided with injection head (7); Said buoyancy aid (5) is provided with injection head leading truck (6); Be provided with injection head adjustment oil cylinder (8) between said buoyancy aid (5) and injection head (7), said injection head (7) can vertically relatively move in injection head leading truck (6).
4. coiled tubing heave compensator according to claim 2; It is characterized in that: said oil pipe (2) is provided with injection head (7); Said buoyancy aid (5) is provided with injection head leading truck (6); Be provided with injection head adjustment oil cylinder (8) between said buoyancy aid (5) and injection head (7), said injection head (7) can vertically relatively move in injection head leading truck (6).
5. coiled tubing heave compensator according to claim 2 is characterized in that: said cantilever (9) is coaxial hinged with oil pipe reel (1).
6. coiled tubing heave compensator according to claim 4 is characterized in that: said cantilever (9) is coaxial hinged with oil pipe reel (1).
7. coiled tubing heave compensator according to claim 1 is characterized in that: said measurement mechanism (10) is an acceleration transducer.
8. according to the described coiled tubing heave compensator of arbitrary claim in the claim 2,4,5 or 6; It is characterized in that: said conduit institutional adjustment oil cylinder (4) links to each other with proportional reversing valve (26); Said proportional reversing valve (26) is connected to fuel tank (23), and the control end of said proportional reversing valve (26) links to each other with central controller (11).
9. coiled tubing heave compensator according to claim 8; It is characterized in that: be provided with bidirectional balanced valve (27) between said proportional reversing valve (26) and the conduit institutional adjustment oil cylinder (4); Be provided with first overflow valve (24) between said proportional reversing valve (26) and fuel tank (23); Be provided with first hydraulic pump (22) between said first overflow valve (24) and the proportional reversing valve (26); Be provided with one way valve (25) between said first overflow valve (24) and the proportional reversing valve (26), said first hydraulic pump (22) is provided with first motor (21) that links to each other with central controller (11).
10. coiled tubing heave compensator according to claim 8; It is characterized in that: said injection head adjustment oil cylinder (8) links to each other with solenoid operated directional valve (31); Said solenoid operated directional valve (31) is connected to fuel tank (23), and the control end of said solenoid operated directional valve (31) links to each other with central controller (11);
Said injection head adjustment oil cylinder (8) links to each other with proportion magnetic valve (34), and said proportion magnetic valve (34) links to each other with fuel tank (23), and the control end of said proportion magnetic valve (34) links to each other with central controller (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202950814U CN202181865U (en) | 2011-08-15 | 2011-08-15 | Continuous oil pipe heave compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202950814U CN202181865U (en) | 2011-08-15 | 2011-08-15 | Continuous oil pipe heave compensation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202181865U true CN202181865U (en) | 2012-04-04 |
Family
ID=46174907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202950814U Expired - Fee Related CN202181865U (en) | 2011-08-15 | 2011-08-15 | Continuous oil pipe heave compensation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202181865U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305039A (en) * | 2011-08-15 | 2012-01-04 | 四川宏华石油设备有限公司 | Continuous oil pipe heave compensation device |
| CN103590438A (en) * | 2013-11-20 | 2014-02-19 | 上海中联重科桩工机械有限公司 | Oil pipe reel system of underground diaphragm wall hydraulic grab and underground diaphragm wall groove forming machine |
| CN112681992A (en) * | 2021-01-06 | 2021-04-20 | 中海油田服务股份有限公司 | Shipborne coiled tubing equipment and offshore operation system |
-
2011
- 2011-08-15 CN CN2011202950814U patent/CN202181865U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305039A (en) * | 2011-08-15 | 2012-01-04 | 四川宏华石油设备有限公司 | Continuous oil pipe heave compensation device |
| CN102305039B (en) * | 2011-08-15 | 2014-04-23 | 四川宏华石油设备有限公司 | Continuous oil pipe heave compensation device |
| CN103590438A (en) * | 2013-11-20 | 2014-02-19 | 上海中联重科桩工机械有限公司 | Oil pipe reel system of underground diaphragm wall hydraulic grab and underground diaphragm wall groove forming machine |
| CN112681992A (en) * | 2021-01-06 | 2021-04-20 | 中海油田服务股份有限公司 | Shipborne coiled tubing equipment and offshore operation system |
| CN112681992B (en) * | 2021-01-06 | 2023-08-15 | 中海油田服务股份有限公司 | Offshore operation system |
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| 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: 20120404 Termination date: 20130815 |