CN103775033B - Electric submersible pump driven by linear motor without moving pipe column and method - Google Patents
Electric submersible pump driven by linear motor without moving pipe column and method Download PDFInfo
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- CN103775033B CN103775033B CN201310114276.8A CN201310114276A CN103775033B CN 103775033 B CN103775033 B CN 103775033B CN 201310114276 A CN201310114276 A CN 201310114276A CN 103775033 B CN103775033 B CN 103775033B
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 57
- 238000007789 sealing Methods 0.000 claims abstract description 49
- 239000003129 oil well Substances 0.000 claims abstract description 41
- 238000005086 pumping Methods 0.000 claims abstract description 11
- 238000007689 inspection Methods 0.000 claims abstract description 5
- 230000008569 process Effects 0.000 claims abstract description 5
- 210000002445 nipple Anatomy 0.000 claims description 27
- 238000003032 molecular docking Methods 0.000 claims description 20
- 230000000694 effects Effects 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 6
- 210000000664 rectum Anatomy 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 206010059875 Device ineffective Diseases 0.000 claims description 2
- 238000000605 extraction Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004873 anchoring Methods 0.000 abstract 3
- 210000001503 joint Anatomy 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 53
- 238000001514 detection method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000010009 beating Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
An electric submersible pump driven by a linear motor without moving a tubular column and a method thereof relate to the technical field of oil extraction in oil fields. When the pump is put down, the pumping rod is connected with the lowering mechanism, and the anti-jack, the sealing anchoring mechanism and the oil well pump are sequentially connected and then put into the well. After the sealing anchoring of the anti-jacking cam and the oil well pump and the butt joint of the plunger and the linear motor rotor are completed, the linear motor can be started to lift. When the pump needs to be inspected, the sucker rod is used for lowering the bailing device to lift the anti-jacking and sealing anchoring mechanism and the oil well pump, so that the pump inspection operation is carried out without lifting an oil pipe and a linear motor in the well. The invention has the beneficial effects that: by means of few lifting and next trip of the pipe column, the well repair operation cost is reduced, the well repair operation period is shortened, the situation that the cable is damaged possibly in the process of lifting and dropping the oil pipe is avoided, and the economic loss is reduced.
Description
Technical field
The present invention relates to oil extraction in oil field technical field, the method driving submersible electric pump oil recovery particularly to linear electric motors, it is
A kind of fixed tubular column removes linear electric motors and drives submersible electric pump and method.
Background technology
Linear electric motors drive reciprocating submersible electric pump to succeed in developing in 2004, enter within 2005 oil field and carry out scene examination
Test, perfect through the improvement of 7 years, push away factory in oil field at homes such as grand celebrations and use.This technology has China's independent intellectual property right, is
International pioneering energy-saving oil extraction equipment, abroad there is no correlation technique.
Linear electric motors drive its operation principle of reciprocating submersible electric pump tubular column structure be：Linear electric motors drive reciprocating latent oil
Pump top is connected with oil pipe, and bottom is coupled successively with linear electric motors and centralizer, slips into oil reservoir, using power cable by ground
To down-hole linear motor, linear motor rotor drives connected oil pump plunger piston to make to power delivery after control system frequency conversion
Pump, realize crude oil lifting.
At present, linear electric motors drive reciprocating submersible electric pump need to propose oil pipe, linear electric motors and cable in pump detection and workover,
Operating cost is higher, easily causes cable bad.For this reason, the present invention take the lead in state, inside and outside propose and solve linear electric motors drive
Reciprocating submersible electric pump fixed tubular column carries out the problem of pump detection and workover.
Linear electric motors drive reciprocating oil immersed pump in field use, can mainly have the advantage of following four aspect：
1st, energy-saving effect is obvious.Using intermittent power supply mode, average amount of electricity saving is up to more than 50%.
2nd, there is not pipe, the bar eccentric wear problem of beam type sucker rod pump Lifting Technique, be more suitable for directional well, horizontal well.
3rd, can achieve Based Intelligent Control.Can join by button adjusting using in ground control cabinet, parameter adjustment is simple and convenient；If joined
Set long distance control system, can achieve the function of long-range monitoring and operation.
4th, meet the requirement of environmental protection.Drive reciprocating oil immersed pump oil pumping to there is not beam type sucker rod pump using linear electric motors to lift
, therefore just there is not oil leak at packing in the packing_seal problem of the technology of liter yet.
Due to having some advantage above compared with beam type sucker rod pump Lifting Technique, linear electric motors drive reciprocating latent oil
Pump is with a wide range of applications in oil field.
During current oil field produces, using insert pump carry out production with the oil well pump of other forms compared with achievable motionless pipe
Post carries out the function of pump detection and workover, so can reduce workover treatment cost, reduces duty cycle.Insert pump fixed tubular column is carried out
The function of well workover is to be realized by the seal anchor of insert pump, by sucker rod, oil well pump noumenal seat is encapsulated in outer work
Make cylinder.Equally, this device can be applicable to linear electric motors driving reciprocating oil immersed pump and realizes the function that fixed tubular column carries out operation.Directly
Line Motor drive reciprocating oil immersed pump carries out pump detection and workover using fixed tubular column and need to solve Railway Project：
1st, linear electric motors under pump for the power resources of linear electric motors driving reciprocating oil immersed pump lifting, can in upstroke
Oil well pump body can be ejected outer working tube, cause the inoperable problem of oil well pump.
2nd, how reliably to seal the problem of grappling.
3rd, how to transfer and bailing problem.
4th, linear motor rotor and linear electric motors drive the problem how reciprocating oil immersed pump takes off, connects in down-hole.
At present, the linear electric motors that oil field uses drive reciprocating submersible electric pump identical with the tubular column structure of common tubing pump,
When examining pump, cable, oil pipe, oil well pump, linear electric motors and other downhole tools need to be proposed.
The shortcoming of prior art：Current technology workover treatment cost compared with using fixed tubular column operation is of a relatively high,
Duty cycle is longer, carries, is likely to result in cable bad during lower tubular column.
Content of the invention
In order to overcome the deficiencies in the prior art, the present invention provides a kind of fixed tubular column to remove linear electric motors and drives submersible electric pump
And method.
A kind of fixed tubular column removes the method that linear electric motors drive submersible electric pump, connects decentralization machine by sucker rod during lower pump
Structure, anti-top and sealing anchor mechanism, oil well pump are sequentially connected rear G.I.H, complete anti-top cam, the sealing anchor of oil well pump
Linear electric motors can be started after the docking of fixed and plunger and linear motor rotor to be lifted, utilize under sucker rod when needing inspection pump
Put bailing device and propose anti-top and sealing anchor mechanism, oil well pump, carry out pump detection and workover it is not necessary to upper portable cable, oil pipe and well
Interior linear electric motors.
The technical solution used in the present invention is：A kind of fixed tubular column removes linear electric motors and drives submersible electric pump, including down-hole
Working portion, throwing mechanism and bailing mechanism composition,
Throwing mechanism is formed by throwing in seating nipple a, shear pin b and pressure cap 5, throws in seating nipple a and connects shear pin b and pressure cap 5；Carry
Drag for mechanism to be made up of top connection c, dipper d, briquetting e, stage clip f and slips g, top connection c connects dipper d, dipper d connects fishing head
4, briquetting e connect stage clip f and slips g, and slips g connects fishing head 4；
Underground work part is linear electric motors 27 and linear motor rotor 28, and linear electric motors 27 connect linear electric motors centralizer
29, linear electric motors centralizer 29 is arranged in sleeve pipe 1, and power cable 3 connects linear electric motors 27, and linear electric motors 27 connect screen casing
26, linear motor rotor 28 connects plunger 21 by jump ring 25, connects travelling valve ball 22 and travelling valve seat 23, pump barrel in plunger 21
24 are connected valve seat 20 and standing valve pressed joint 18, and there are fixed valve ball 19, standing valve pressed joint in fixed valve base 20 upper end
18 other end connects central tube 7, and central tube 7 connects packing ring 12, sealing ring 13, spacer ring 14, hold-down ring 15, jump ring 16 and baffle ring
17, outer working tube 11 connection screen casing 26, the other end connected pipes 2 of outer working tube 11, the inside connection fishing head 4 of central tube 7,
Pressure cap 5, spring 6, fixture block 8, cam 9 and pin 10, the mesopore of pressure cap 5 connects fishing head 4 and spring 6.
A kind of fixed tubular column removes the method that linear electric motors drive submersible electric pump, is connected with sucker rod and throw in work during construction
Cylinder a upper end fastener for sucker rod, by Bao Kuos the whole devices including oil well pump along along oil pipe subordinate enter, complete decentralization after, utilization
Electric mover is docked by the overtravel of linear electric motors with oil pump plunger piston, judges anti-upper ejection device, sealing device all normal works
After work, above carry sucker rod and shear pin b is cut off, propose sucker rod and throw in seating nipple a, complete to throw in work.
After bailing device and fishing head 4 docking, fishing head 4 promotes slips g so that stage clip f compresses, slips g bottom platform
Dipper d internal diameter larger part is moved on rank, slips g bottom step internal diameter becomes big, fishing head 4 enters the internal rear compression spring f of slips g and pushes away
Dynamic slips g moves down, and fishing head 4 is successfully docked with bailing device, above carries sucker rod and is proposed that anti-top, sealing anchor mechanism and straight line
Motor drive reciprocating submersible electric pump.
Complete to be docked when pumping pump work by jump ring, disengage during inspection pump；The impulse stroke of linear motor rotor
For 1.23m, range can reach 1.3m, and overtravel length is 0.07m；The overtravel of available linear motor rotor realizes post
Plug 21 and the docking of linear motor rotor 28, that is, utilize electric mover overtravel 0.07m upwards when docking, jump ring (25) is preset at
The bottleneck of linear motor rotor (28), motor using overtravel by mover upper end to entering oil pump plunger piston (21) lower end, jump ring
(25) stress because of limited space, external diameter diminishes, and linear motor rotor (28) carries jump ring (25) and enters plunger (21) lower end
Open behind inside, be finally completed docking
When carrying out lower pump operation, when cam (9) and oil pipe (2) contact internal walls, cam (9) is under force around pin
Sub (10) rotate to contract, and cam (9) is upper to push up fixture block (8), and fixture block (8) forces spring-compressed, now anti-top cam, sealing anchor
Fixed part can be smoothly descending along the middle part duct of outer working tube 11；When anti-top cam, sealing anchor portion continue traveling downwardly, due to
Channel diameter becomes big, and now under the elastic force of spring acts on, cam 9 rotates around pin 10, and cam 9 position is fixed；Meanwhile,
Because the external diameter under bottom jump ring 16 naturalness is more than the latus rectum at outer working tube internal minimum inner diameter, card during descending
Spring 16 is under external force to contract, descending in the presence of upper pressure, when come downwards to be relatively large in diameter at latus rectum when, jump ring
16 recover shape under its own resilient effect, complete the grappling of oil well pump, play restriction and take out axial direction in oil pumping process for the pump barrel
The effect of motion；Sealing ring plays sealing function, prevents under pump upper liquid direction of flow pump；When oil well pump has upper top trend,
Position-limiting action can play in this mechanism, it is to avoid its abjection outer working tube is it is ensured that oil well pump normal work.
Beneficial effects of the present invention：By carrying less, lower one-trip string thus realizing reduces cost, reduce workover treatment week
Phase；Avoid carry, the situation of cable bad that lower oil pipe is likely to result in occurs, and reduces economic loss.
Brief description
When considered in conjunction with the accompanying drawings, by referring to detailed description below, can more completely more fully understand the present invention with
And easily learn the adjoint advantage of many of which, but accompanying drawing described herein is used for providing a further understanding of the present invention,
Constitute the part of the present invention, the schematic description and description of the present invention is used for explaining the present invention, does not constitute to this
Bright improper restriction, such as figure are wherein：
Fig. 1 is that the linear electric motors that the present invention adopts drive reciprocating oil immersed pump tubular column structure schematic diagram.
Fig. 2 is throwing mechanism schematic diagram.Throw in seating nipple a；Shear pin b;
Fig. 3 is bailing structural scheme of mechanism.Joint C；Dipper d；Briquetting e；Stage clip f；Slips g;
Fig. 4 is that down-hole linear motor drives the anti-top of reciprocating oil immersed pump and sealing anchor mechanism schematic diagram.
Fig. 5 is anti-top cam, sealing anchor portion schematic diagram.
Fig. 6 be down-hole take off, connection mechanism schematic diagram.
The present invention is further described with reference to the accompanying drawings and examples.
Specific embodiment
Obviously, those skilled in the art belong to the guarantor of the present invention based on the many modifications and variations that spirit of the invention is done
Shield scope.
Embodiment 1：As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, the function of the present invention passes through following sections mechanism
Realize：Throwing mechanism is formed by throwing in seating nipple a, shear pin b and pressure cap 5, throws in seating nipple a and connects shear pin b and pressure cap 5, bailing
Mechanism is made up of top connection c, dipper d, briquetting e, stage clip f and slips g, and top connection c connects dipper d, and dipper d connects fishing head 4,
Briquetting e connects stage clip f and slips g, and slips g connects fishing head 4.
Linear electric motors 27 and linear motor rotor 28, linear electric motors 27 connect linear electric motors centralizer 29, and linear electric motors are helped
Positive device 29 is arranged in sleeve pipe 1, and power cable 3 connects linear electric motors 27, and linear electric motors 27 connect screen casing 26.
Underground work part is linear electric motors 27 and linear motor rotor 28, and linear electric motors 27 connect linear electric motors centralizer
29, linear electric motors centralizer 29 is arranged in sleeve pipe 1, and power cable 3 connects linear electric motors 27, and linear electric motors 27 connect screen casing
26, linear motor rotor 28 connects plunger 21 by jump ring 25, connects travelling valve ball 22 and travelling valve seat 23 in plunger 21, fixing
The other end of valve pressed joint 18 connects central tube 7, and central tube 7 connects packing ring 12, sealing ring 13, spacer ring 14, hold-down ring 15, card
Spring 16 and baffle ring 17, outer working tube 11 connects screen casing 26, the other end connected pipes 2 of outer working tube 11, and the inside of central tube 7 is even
Connect fishing head 4, pressure cap 5, spring 6, fixture block 8, cam 9 and pin 10, the mesopore of pressure cap 5 connects fishing head 4 and spring 6.
Embodiment 2：As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, fixed tubular column removes linear electric motors and drives latent oil electricity
Pump and method,
Throwing mechanism:Seating nipple a is connected by shear pin b with pressure cap 5.
Bailing mechanism:Top connection c top is transferred after being connected with sucker rod by screw thread from oil pipe, makees in sucker rod gravity
With under, fishing head 4 top conical surface push card watt g is up along the internal conical surface of dipper d, and spring is compressed, when the distance of two lobe slips
When reaching certain value, the position shown in Fig. 3, fishing head 4 and the success of bailing device under slips g, will be pushed under spring force
Docking, fishing head 4 is pinned by slips g, now above carries sucker rod and can achieve bailing.
Down-hole linear motor drives the anti-top of reciprocating oil immersed pump and sealing anchor mechanism;This mechanism is by anti-top cam, sealing
Anchor portion Fig. 5 and outer working tube 11 form,
By the outer working tube 11 shown in Fig. 1 with oil pipe G.I.H precalculated position.Anti- top cam shown in Fig. 5, sealing anchor
Determine the pressure cap 5 of part and be connected by shear pin with throwing in seating nipple a, lower thread be connected with oil well pump top screw thread after under enter oil
Pipe.
When carrying out lower pump operation, when cam 9 and oil pipe 2 contact internal walls, cam 9 revolves around pin 10 under force
Turn to contract, cam 9 pushes up fixture block 8, fixture block 8 forces spring-compressed, now the anti-top cam shown in Fig. 5, sealing anchor portion
Dividing can be smoothly descending along the middle part duct of outer working tube 11.Anti- top cam shown in as Fig. 5, sealing anchor portion continue traveling downwardly to
During position shown in Fig. 4, because channel diameter becomes big, now under the elastic force of spring acts on, cam 9 rotates to figure around pin 10
Show position, cam 9 position is fixed.Meanwhile, because the external diameter under bottom jump ring 16 naturalness is more than during descending
Latus rectum at outer working tube internal minimum inner diameter shown in Fig. 4, jump ring 16 under external force to contract, in upper pressure
Descending under effect, when come downwards to shown in Fig. 5 when being relatively large in diameter at latus rectum, jump ring 16 its own resilient effect under recover shape,
Complete the grappling of oil well pump, play the effect limiting axially-movable in oil pumping process for the oil pumping barrel.Sealing ring 13 plays close
Envelope acts on, and prevents under pump upper liquid direction of flow pump.When oil well pump has upper top trend, this device can play position-limiting action, keeps away
Exempt from its abjection outer working tube it is ensured that oil well pump normal work.
When needing to examine pump, above carrying fishing head 4 and fixture block 8 is compressible spring 6, when fixture block 8 above carries to cam more than 9
When, cam 9 rotates to seating nipple around pin 10 under Gravitative Loads, now can be by the anti-top cam shown in Fig. 6, sealing anchor
Fixed part and bottom oil well pump carry to ground.
Oil well pump and linear electric motors take off, connection mechanism.As shown in Figure 6.This mechanism is motor-driven by plunger 21, jump ring 25 and straight-line electric
Son 28 composition.
Linear electric motors drive reciprocating submersible electric pump with sealing and anchor portion G.I.H, are completing sealing, grappling
The position of pump determines therewith afterwards.The impulse stroke of linear motor rotor is 1.23m, and range can reach 1.3m, is out of the line
Cheng Changdu is 0.07m.The overtravel of available linear motor rotor realizes the docking of plunger and linear motor rotor.
Embodiment 3：As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, fixed tubular column removes linear electric motors and drives latent oil electricity
Pump, including underground work part, throwing mechanism and bailing mechanism composition,
Underground work part is by sleeve pipe 1, oil pipe 2, power cable 3, fishing head 4, pressure cap 5, spring 6, central tube 7, fixture block
8th, cam 9, pin 10, outer working tube 11, packing ring 12, sealing ring 13, spacer ring 14, hold-down ring 15, jump ring 16, baffle ring 17, fixation
Valve pressed joint 18, fixed valve ball 19, fixed valve base 20, plunger 21, travelling valve ball 22, travelling valve seat 23, pump barrel 24, jump ring
25th, screen casing 26, linear electric motors 27, linear motor rotor 28 and linear electric motors centralizer 29 form；Throwing mechanism is by throwing in work
Cylinder a, shear pin b and pressure cap 5 form；Bailing mechanism is made up of top connection c, dipper d, briquetting e, stage clip f and slips g.
There are throwing mechanism, bailing mechanism, down-hole uncoupling mechanism, anti-top and sealing anchor mechanism, bailing and throw in technique etc.
Part：
Throwing mechanism：Throwing mechanism is formed by throwing in seating nipple a, shear pin b and pressure cap 5.Throw in seating nipple a and pressure cap 5 leads to
Cross shear pin b to be connected, during construction, connect, with sucker rod, the fastener for sucker rod throwing in seating nipple a upper end, will be complete including oil well pump
Part device is sent into inside oil pipe, after completing decentralization, using linear electric motors overtravel by electric mover and oil pump plunger piston pair
Connect, after judging anti-upper ejection device, the whole normal work of sealing device, above carry sucker rod and shear pin b is cut off, propose sucker rod and throwing
Put seating nipple a, complete to throw in work.
Throwing mechanism：Throwing mechanism is formed by throwing in seating nipple a, shear pin b and pressure cap 5, throws in seating nipple a and pressure cap 5 leads to
Cross shear pin b to connect, during construction, connect, with sucker rod, the fastener for sucker rod throwing in seating nipple a upper end, will be complete including oil well pump
Part device is sent into inside oil pipe, after completing decentralization, using linear electric motors overtravel by electric mover and oil pump plunger piston pair
Connect, after judging anti-upper ejection device, the whole normal work of sealing device, above carry sucker rod and shear pin b is cut off, propose sucker rod and throwing
Put seating nipple a, complete to throw in work.
Bailing mechanism：Bailing mechanism is made up of top connection c, dipper d, briquetting e, stage clip f and slips g.Bailing device and beating
When dragging for 4 docking, fishing head 4 promotes slips g so that stage clip f compression, slips g bottom step moves to dipper d internal diameter larger
Place, slips g bottom step internal diameter becomes big, and fishing head 4 enters the internal rear compression spring f of slips g and promotes slips g to move down, fishing head 4 with
Bailing device successfully docks, and fishing head 4 is pinned by slips g；Now, above carry sucker rod to release oil well pump grappling and make anti-ejection device
Ineffective, it is proposed that the anti-top in down-hole and sealing anchor mechanism, linear electric motors drive reciprocating submersible electric pump.
Down-hole takes off, connection mechanism：Down-hole takes off, connection mechanism is made up of plunger 21, jump ring 25 and linear motor rotor 28.This mechanism
Function is completed by jump ring, is docked when pumping pump work, disengages during inspection pump.The impulse stroke of linear motor rotor is
1.23m, range can reach 1.3m, and overtravel length is 0.07m.The overtravel of available linear motor rotor realizes plunger
21 and the docking of linear motor rotor 28, that is, utilize electric mover overtravel 0.07m upwards when docking, jump ring (25) is preset at directly
The bottleneck of line electric mover (28), motor using overtravel by mover upper end to entering oil pump plunger piston (21) lower end, jump ring
(25) stress because of limited space, external diameter diminishes, and linear motor rotor (28) carries jump ring (25) and enters plunger (21) lower end
Open behind inside, be finally completed docking.
Anti- top and sealing anchor mechanism：Anti- top and sealing anchor mechanism are by fishing head 4, pressure cap 5, spring 6, central tube 7, card
Block 8, cam 9, pin 10, outer working tube 11, packing ring 12, sealing ring 13, spacer ring 14, hold-down ring 15, jump ring 16 and 17 groups of baffle ring
Become.When carrying out lower pump operation, when cam (9) and oil pipe (2) contact internal walls, cam (9) is under force around pin
(10) rotate to contract, cam (9) is upper to push up fixture block (8), and fixture block (8) forces spring-compressed, now anti-top cam, sealing grappling
Part can be smoothly descending along the middle part duct of outer working tube 11；When anti-top cam, sealing anchor portion continue traveling downwardly, due to hole
Road diameter becomes big, and now under the elastic force of spring acts on, cam 9 rotates around pin 10, and cam 9 position is fixed.Meanwhile, exist
Because the external diameter under bottom jump ring 16 naturalness is more than at the outer working tube internal minimum inner diameter shown in Fig. 4 during descending
Latus rectum, jump ring 16 is under external force to contract, descending in the presence of upper pressure, when coming downwards to the diameter shown in Fig. 4
Compared with when at big orifice, jump ring 16 recovers shape under its own resilient effect, completes the grappling of oil well pump, plays restriction and takes out pump barrel and exists
The effect of the axially-movable in oil pumping process.Sealing ring 13 plays sealing function, prevents under pump upper liquid direction of flow pump.Work as oil well pump
When having upper top trend, position-limiting action can play in this mechanism, it is to avoid its abjection outer working tube is it is ensured that oil well pump normal work.
Embodiment 4：As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6:
A kind of fixed tubular column removes the method that linear electric motors drive submersible electric pump, throws in processing step：
Step 1：On ground, jump ring 25 is preset at the bottleneck shown in Fig. 6 of linear motor rotor 28, is linear electric motors
Mover is docked with oil well pump prepares.
Step 2：Anti- top cam, sealing anchor portion and linear electric motors are driven reciprocating submersible electric pump to carry out by screw thread
Connect；Main purpose is to ensure that the bailing of oil well pump, prevents upper top, the sealing enforcement in down-hole for the grappling function.
Step 3：By throw in seating nipple a and pressure cap 5 be fixed as shown in Figure 2 by shear pin b it is ensured that delivery device with take out
Oil pump and its effectively connection of relevant accessory device, are ready for throwing in work.
Step 4：Linear electric motors centralizer 29, linear electric motors 27, screen casing 26, outer working tube 11 and oil pipe 2 are sequentially connected
G.I.H, power cable 3 together enters down with oil pipe.
Step 5：It is threaded connection rear G.I.H by throwing in seating nipple a top with sucker rod, complete close shown in Fig. 4
Envelope, grappling, complete to enter work under oil well pump and auxiliary equipment by this processing step.
Step 6：Above carry sucker rod to cut off shear pin, propose sucker rod and throw in seating nipple a, complete oil well pump and throw in technique
Step.
Step 7：Start motor, complete plunger 21 and the docking of linear motor rotor 28 can enter production.
Step 8：Bailing processing step：
Step 8.1：Start motor, linear motor rotor 28 is deviate from plunger 21 it is also possible to above carry sucker rod to complete the two
Disengage.
Step 8.2：Using sucker rod by the bailing mechanism G.I.H shown in Fig. 3, complete bailing mechanism and fishing head 4
Docking.
Step 8.3：Above carry sucker rod, make anti-top divide ineffective, jump ring 16 to release to contract and can carry after grappling
Go out oil well pump, complete bailing technique.
As described above, being explained to embodiments of the invention, but as long as essentially without depart from this
Bright inventive point and effect can have a lot of deformation, and this will be readily apparent to persons skilled in the art.Therefore, this
The variation of sample is also integrally incorporated within protection scope of the present invention.
Claims (3)
1. a kind of fixed tubular column remove linear electric motors drive reciprocating submersible electric pump it is characterised in that include underground work part,
Throwing mechanism and bailing mechanism；
Throwing mechanism is formed by throwing in seating nipple, shear pin and pressure cap, throws in seating nipple and pressure cap is connected by shear pin, throw in work
Sucker rod is connect, bailing mechanism is made up of top connection, dipper, briquetting, stage clip and slips, top connection top and sucker rod phase on cylinder
Even, lower end connects dipper, connects successively in the internal briquetting of dipper, stage clip and slips；
Underground work part is linear electric motors and linear motor rotor, and linear electric motors bottom connects linear electric motors centralizer, straight line
Linear electric motors are anchored in sleeve pipe motor centralizer, and linear electric motors upper end is connected with screen casing, and screen casing connects outer working tube, outer work
Make cylinder upper end to be connected with oil pipe, power cable connects the electrical control cubicles on linear electric motors and ground；
Linear motor rotor is connected with plunger by uncoupling jump ring (25), connects travelling valve ball and travelling valve seat in plunger；Pump barrel
Upper end be connected valve seat and standing valve pressed joint, the inside of fixed valve base and standing valve pressed joint is equipped with standing valve
Ball, the other end of standing valve pressed joint connects central tube, and central tube connects packing ring, sealing ring, spacer ring, hold-down ring, grappling card
Spring (16) and baffle ring, outer working tube connects screen casing, the other end connected pipes of outer working tube, the top of central tube and pressure cap phase
Even, internally fishing head, spring, fixture block, cam and pin are sequentially connected, and the mesopore of pressure cap connects fishing head and spring.
2. a kind of fixed tubular column remove linear electric motors drive submersible electric pump method it is characterised in that：During construction with sucker rod even
Connect throw in seating nipple (a) upper end fastener for sucker rod, by the whole devices including oil well pump in oil pipe subordinate enter, complete
After grappling, linear motor rotor is docked by the overtravel using linear electric motors with oil pump plunger piston, judges anti-upper ejection device, sealing
After the whole normal work of device, above carry sucker rod and shear pin (b) is cut off, propose sucker rod and throw in seating nipple (a), complete to throw in
Work；
When bailing mechanism and fishing head (4) docking, fishing head (4) promotes slips (g) so that stage clip (f) compression, and slips (g) is
Dipper (d) internal diameter larger part is moved on the step of lower end, slips (g) bottom step internal diameter becomes big, and fishing head (4) enters slips
G () internal rear compression spring (f) promotes slips (g) to move down, fishing head (4) is pinned by slips (g), and fishing head (4) is become with bailing mechanism
Work(docks；Now, above carrying sucker rod makes anti-ejection device ineffective and releases oil well pump grappling, oil pump plunger piston (21) and straight line
The anti-top in after electric mover (28) disengages it is proposed that down-hole and sealing anchor mechanism, reciprocating oil immersed pump；
Complete to be docked when pumping pump work by uncoupling jump ring (25), disengage during inspection pump：The work of linear motor rotor
Stroke is 1.23m, and range can reach 1.3m, and overtravel length is 0.07m；The overtravel of available linear motor rotor is real
Existing plunger (21) and the docking of linear motor rotor (28), that is, surpassed using the 0.07m that linear motor rotor moves upwards when docking
Stroke, uncoupling jump ring (25) is preset at the bottleneck of linear motor rotor (28), and linear electric motors utilize overtravel by linear electric motors
To entering oil pump plunger piston (21) lower end, because limited space and variable force, external diameter diminishes uncoupling jump ring (25), straight-line electric for mover upper end
Motor-driven son (28) carries after uncoupling jump ring (25) enters plunger (21) lower end inside opens, and is finally completed docking；
When carrying out lower pump operation, when cam (9) and oil pipe (2) contact internal walls, cam (9) is under force around pin
(10) rotate to contract, cam (9) is upper to push up fixture block (8), and fixture block (8) forces spring-compressed, now anti-top cam, sealing grappling
Part can be smoothly descending along the middle part duct of outer working tube (11)；When anti-top cam, sealing anchor portion continue traveling downwardly, due to
Channel diameter becomes big, and now under the elastic force of spring acts on, cam (9) rotates around pin (10), and cam (9) position is fixed；With
This simultaneously, because the external diameter under grappling jump ring (16) naturalness is more than at outer working tube internal minimum inner diameter during descending
Latus rectum, grappling jump ring (16) is under external force to contract, descending in the presence of upper pressure, when coming downwards to diameter relatively
When at big orifice, grappling jump ring (16) recovers shape under its own resilient effect, completes the grappling of oil well pump, plays restriction oil pumping
The effect of axially-movable in oil pumping process for the pump barrel, sealing ring (13) plays sealing function, prevents under pump upper liquid direction of flow pump,
When oil well pump has upper top trend, position-limiting action can play in this mechanism, it is to avoid its abjection outer working tube it is ensured that oil well pump just
Often work.
3. a kind of fixed tubular column according to claim 2 removes the method that linear electric motors drive submersible electric pump, and its feature exists
In：
Throw in processing step：
1), on ground, uncoupling jump ring (25) is preset at the bottleneck of linear motor rotor (28), is linear motor rotor and take out
Oil pump docking is prepared；
2), anti-top cam, sealing anchor portion and linear electric motors are driven reciprocating submersible electric pump to be attached by screw thread；Protect
The bailing of card oil well pump, anti-upper top, the sealing enforcement in down-hole for the grappling function；
3), will throw in seating nipple (a) and pressure cap (5) is fixed by shear pin (b) it is ensured that delivery device and oil well pump and its phase
Close the effectively connection of auxiliary device, be ready for throwing in work；
4), successively by under linear electric motors centralizer (29), linear electric motors (27), screen casing (26), outer working tube (11) and oil pipe (2)
Enter in well, power cable (3) together enters down with oil pipe；
5), seating nipple (a) top will be thrown in and sucker rod will be threaded connection rear G.I.H, complete sealing, grappling, by this
Processing step completes to enter work under oil well pump and auxiliary equipment；
6), above carry sucker rod to cut off shear pin, propose sucker rod and throw in seating nipple (a), complete oil well pump and throw in processing step；
7), start linear electric motors, complete plunger (21) and the docking of linear motor rotor (28) can enter production；
Bailing processing step：
1), start linear electric motors, linear motor rotor (28) abjection plunger (21) above carries sucker rod and completes the two disengagement；
2), utilize sucker rod by bailing mechanism G.I.H, complete bailing mechanism and the docking of fishing head (4)；
3), above carrying sucker rod, making anti-top divide ineffective, grappling jump ring (16) to release after grappling i.e. it is proposed that taking out to contract
Oil pump, completes bailing technique.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310114276.8A CN103775033B (en) | 2013-04-03 | 2013-04-03 | Electric submersible pump driven by linear motor without moving pipe column and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310114276.8A CN103775033B (en) | 2013-04-03 | 2013-04-03 | Electric submersible pump driven by linear motor without moving pipe column and method |
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| CN103775033B true CN103775033B (en) | 2017-02-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115434668B (en) * | 2021-06-02 | 2024-05-28 | 中国石油天然气股份有限公司 | Submersible electric plunger pump and throwing process and bailing process thereof |
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| US6322331B1 (en) * | 1998-11-10 | 2001-11-27 | Baker Hughes Incorporated | Tubular junction for tubing pump |
| CN1563715A (en) * | 2004-04-21 | 2005-01-12 | 王善政 | Electrical submersible, permanent-magnet straight reciprocating pump |
| CN1664368A (en) * | 2005-04-05 | 2005-09-07 | 大庆油田有限责任公司 | Small displacement high lift reciprocating submersible electric pump |
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| CN103775033A (en) | 2014-05-07 |
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