CN100383363C - Direct ground driving gear of screw pump - Google Patents
Direct ground driving gear of screw pump Download PDFInfo
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- CN100383363C CN100383363C CNB2006101092788A CN200610109278A CN100383363C CN 100383363 C CN100383363 C CN 100383363C CN B2006101092788 A CNB2006101092788 A CN B2006101092788A CN 200610109278 A CN200610109278 A CN 200610109278A CN 100383363 C CN100383363 C CN 100383363C
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Abstract
The invention relates to a device for directly driving the screw pump, while it is mounted on the ground, to solve the problems as large power consumption, hard rotation adjustment, and high maintenance cost, wherein it is characterized in that: changing the rotation axle of power motor of screw pump into hollow axle, to directly transmit the power via using clamper to connect the oil pump rod; the three-way oil tube for outputting oil is connected to the sealing tube of motor axle; the sealing tube and hollow axle have mechanical sealing at the end cover; the oil pump rod and axial head use coil root static sealing; the axial head and hollow motor axle use rubber ring static sealing; the lower end cover is embedded with axial taper bearing to use the upper and lower end cover bearings as radial correction bearing; the flange disc at the well open is mounted with clamp sealing device; the main power circuit of motor is parallel connected to the brake resistance. The invention controls the motor to directly drive the screw pump, with lower energy consumption and continuous speed adjustment.
Description
Technical field:
The present invention relates to a kind of device that is applied in the Lifting Technique field, oil field, relate to a kind of installation device of direct drive screw pump on the ground specifically.
Background technology:
The driving unit on screw pump that generally uses on the oil field is made up of parts such as well head, power motor, belt, reducer, sucker rod sealed packings at present.Working under this drive unit, there are the following problems: one, adjusting the screw pump rotating speed can only finish by changing motor pulley, very inconvenient, and is subjected to the size restrictions of belt pulley, causes the rotating speed of screw pump can not realize continuous linear adjustment.Two,, make nearly 20% power by loss in vain owing to have belt and reducer.Three, accessories such as reducer, belt are fragile in daily production management, and maintenance cost is higher.Four, there is potential safety hazard in the ground drive apparatus when the screw pump rotating speed is higher.Five, the use of the anti-reverse check mechanism of click mechanical type has a strong impact on the application life of screw bolt well lower sucker rod, oil pipe.
Summary of the invention:
The power attenuation that existing driving unit on screw pump in use exists is big, the screw pump rotating speed is adjusted difficulty and operating safety factor is low, the problem that maintenance cost is high in order to solve.The invention provides a kind of direct ground driving gear of screw pump, the directly drive screw pump sucker rod running of this kind direct ground driving gear of screw pump, axial carrying, mechanical seal, static seal and power motor are integrated in one, can directly adjust the screw pump running speed, and do not re-use accessory accessories easy to wear such as reducer, belt, reduce energy loss, reduced maintenance cost, improved operating safety factor.
Technical scheme of the present invention is: this kind direct ground driving gear of screw pump, transmit clamp by moment of torsion, packing gland, packing, spindle nose, O-ring seal, connect steel key, the mechanically-sealing apparatus price fixing, the motor upper cover alignment bearing, motor upper cover, the mechanically-sealing apparatus Moving plate, the sealed tube alignment bearing, motor rotation axis, electric machine casing, sealed tube, the axial carrying cone bearing, the motor bottom end cover, motor bottom end cover alignment bearing, the flange connecting bolt, flange, stationary gland, threeway connects O-ring seal, the slips blowout preventer, the threeway gathering line, flange connects column, the power supply unit of flange and motor constitutes.Will be by the mechanically-sealing apparatus price fixing, the motor upper cover alignment bearing, motor upper cover, the mechanically-sealing apparatus Moving plate, the sealed tube alignment bearing, motor rotation axis, electric machine casing, sealed tube, the axial carrying cone bearing, the motor bottom end cover, the unit that parts such as motor bottom end cover alignment bearing constitute is called hollow shaft motor, be embedded with an axial carrying cone bearing at the motor bottom end cover, motor rotation axis is hollow, a hollow seal pipe is installed in this axle, be fixed with a cover mechanically-sealing apparatus between described sealed tube and the motor rotation axis, be called mechanically-sealing apparatus price fixing and mechanically-sealing apparatus Moving plate, fix by jackscrew between mechanically-sealing apparatus price fixing and the sealed tube, pass through rubber sealing between mechanically-sealing apparatus Moving plate and the motor hollow shaft, mechanically-sealing apparatus price fixing and mechanically-sealing apparatus Moving plate form work plane, realize mechanical seal, be fixed with a sealed tube alignment bearing outside sealed tube and between the inwall of motor rotation axis.Described hollow shaft motor directly is fixed on the screw pump well head flange by the flange connecting bolt, the screw pump sucker rod passes motor rotation axis and transmits the clamp connection by moment of torsion, directly transmit Motor torque by connecting steel key, spindle nose and sucker rod are realized static seal by packing gland, packing, and spindle nose and motor rotation axis are realized static seal by O-ring seal.Described slips blowout preventer is made up of slips and caulking gum two parts, is fixed in the interior pipe of threeway gathering line.
In addition, with the anti-reverse check mechanism cancellation of original ground click, alternate one group of braking resistor of doing star-like connection in parallel on the three-phase master current supply circuit that changes at motor, the input of this braking resistor is controlled by the constant close contact on the main contacts relay with inactive.
The present invention has following beneficial effect: owing to take such scheme, cancelled drive disk assemblies such as reducer in the existing drive unit, belt, transmission mechanism is simplified.It is about 30% to descend with former type of drive contrast electric energy loss, and the regular maintenance expense significantly reduces.Secondly, change high-speed rotary motor into the low speed rotation motor, improved the safety factor of wellhead equipment operation, avoided the generation of security incident.Once more, adopt the anti-reverse technology of electromagnetic braking, prolonged the application life of screw bolt well lower sucker rod, oil pipe.In addition, by the continuous adjustment of special purpose driver realization output speed, manufacturing parameter can be adjusted flexibly, when making things convenient for production management, has improved the crude output of individual well, has prolonged the pump detection period of screw pump.
Description of drawings:
Accompanying drawing 1 is the structure sectional view of mechanical part among the present invention.
Accompanying drawing 2 is electrical schematic diagrams of electric control system major loop among the present invention.
Accompanying drawing 3 is electrical schematic diagrams of motor driver under the one embodiment of the invention.
1-sucker rod among the figure, the 2-moment of torsion transmits clamp, 3-packing gland, the 4-packing, 5-spindle nose, 6-O-ring seal, 7-connects steel key, 8-mechanically-sealing apparatus price fixing, 9-motor upper cover alignment bearing, the 10-motor upper cover, 11-mechanically-sealing apparatus Moving plate, 12-sealed tube alignment bearing, the 13-motor rotation axis, 14-electric machine casing, 15-sealed tube, 16-axial carrying cone bearing, 17-motor bottom end cover, 18-motor bottom end cover alignment bearing, 19-flange connecting bolt, 20-upper flanges dish, the 21-stationary gland, the 22-threeway connects O-ring seal, 23-slips blowout preventer, 24-threeway gathering line, the 25-flange connects column, 26-lower end flange, U1-Single-chip Controlling unit, the U2-IGBT driver element, U3-frequency control unit.
The specific embodiment:
The invention will be further described below in conjunction with accompanying drawing:
The objective of the invention is to develop a kind of oil field direct ground driving gear of screw pump, when mounted, make the screw pump sucker rod pass hollow motor rotation axis, the running of the direct drive screw pump of hollow shaft power motor sucker rod, the axial carrying device and the mechanically-sealing apparatus of screw pump well head are designed in the end cap and hollow shaft of motor, realize that axial carrying, mechanical seal and power motor are integrated in one, adopt electromagnetic brake technology simultaneously, solve screw pump counter-rotating braking.
Based on above-mentioned purpose, design according to following steps:
The one, with reducer and belt cancellation that the conventional screw pump drive is used, the screw pump sucker rod directly passes the hollow shaft of power motor, connects direct transferring power by clamp;
The 2nd, well head flow tee oil pipe directly connects the sealed tube in the core motor axle, realizes mechanical seal at the motor upper cover place.
The 3rd, designed the axial carrying cone bearing at the motor bottom end cover, be used for the axial carrying of screw pump well head, utilize radially alignment bearing of the upper and lower end cap bearing conduct of motor.
The 4th, at wellhead flange dish Position Design slips blowout preventer, need not employ equipment such as crane when machinery check and repair, replacing sealed packing, can directly carry out upkeep operation.
The 5th, in the control device of motor, design electromagnetic brake technology, realize the electromagnetic braking of screw pump sucker rod counter-rotating.
Concrete technical scheme as shown in Figure 1, all make very big improvement at original screw pump drive mechanism and packing_seal position, transmitted clamp 2 by moment of torsion specifically, packing gland 3, packing 4, spindle nose 5, O-ring seal 6, connect steel key 7, mechanically-sealing apparatus price fixing 8, motor upper cover alignment bearing 9, motor upper cover 10, mechanically-sealing apparatus Moving plate 11, sealed tube alignment bearing 12, motor rotation axis 13, electric machine casing 14, sealed tube 15, axial carrying cone bearing 16, motor bottom end cover 17, motor bottom end cover alignment bearing 18, flange connecting bolt 19, upper flanges dish 20, stationary gland 21, threeway connects O-ring seal 22, slips blowout preventer 23, threeway gathering line 24, flange connects column 26, the power supply unit of lower end flange 27 and motor constitutes.
Will be by mechanically-sealing apparatus price fixing 8, motor upper cover alignment bearing 9, motor upper cover 10, mechanically-sealing apparatus Moving plate 11, sealed tube alignment bearing 12, motor rotation axis 13, electric machine casing 14, sealed tube 15, axial carrying cone bearing 16, motor bottom end cover 17, the unit that motor bottom end cover alignment bearing 18 parts such as grade constitute is called hollow shaft motor, be embedded with an axial carrying cone bearing 16 at motor bottom end cover 17, motor rotation axis 13 is hollow, screw pump sucker rod like this, axial loads such as fluid column act on this axial carrying cone bearing 16 by motor-hollow axle, thereby realize the distribution of axial force.A hollow seal pipe 15 is installed in this axle, be fixed with a cover mechanically-sealing apparatus between described sealed tube 15 and the motor rotation axis 13, be called mechanically-sealing apparatus price fixing 8 and mechanically-sealing apparatus Moving plate 11, fix by jackscrew between mechanically-sealing apparatus price fixing 8 and the sealed tube 15, pass through rubber sealing between mechanically-sealing apparatus Moving plate 11 and the motor hollow shaft 13, mechanically-sealing apparatus price fixing 8 and mechanically-sealing apparatus Moving plate 11 form work plane, can bear the fluid pressure of 1～2Mpa, realize mechanical seal.Be fixed with a sealed tube alignment bearing 12 outside hollow seal pipe 15 and between the inwall of motor rotation axis 13, be beneficial to hollow seal pipe 15 centerings, guarantee sealing effectiveness, the bottom is connected with stationary gland 21, and both realize the function that supports and set upright jointly.Connecting O-ring seal 22 and screw pump oil production in the bottom of hollow seal pipe 15 by threeway sets the well head threeway and is connected and seals; Slips blowout preventer 23 is made up of slips and caulking gum two parts, close slips blowout preventer 23 during well workover, slips with sucker rod chucking, caulking gum with sucker rod and oil pipe space sealing, at this moment, Axial Loads such as screw pump sucker rod, fluid column are on slips blowout preventer 23, can remove the well workover that screw pump motor, spindle nose, mechanically-sealing apparatus carry out screw pump and safeguard, and not need to employ workover rig such as crane.
During screw pump power motor energising work, core motor axle 13 transmits clamp 2, spindle nose 5, connects 1 rotation of steel key 7 drive sucker rods by moment of torsion, axial loads such as screw pump sucker rod, fluid column act on by spindle nose 5, motor-hollow axle 13 on the axial carrying cone bearing 16 of motor bottom end cover, realize axial carrying; Spindle nose 5 and sucker rod 1 are realized static seal by packing gland 3, packing 4; Spindle nose 5 and motor-hollow axle 13 are realized static seal by O-ring seal 6; Hollow seal pipe 15 is connected O-ring seal 22 with the well head gathering line by threeway and connects, and realizes mechanical seal by mechanically-sealing apparatus 8,9 between hollow seal pipe 15 motor hollow shafts 13; Slips blowout preventer 23 is opened when the screw pump ordinary production, only is used for unloading and sealing well head when wellhead equipment is safeguarded in well workover.
Described hollow shaft motor directly is fixed on the screw pump well head upper flanges dish 20 by flange connecting bolt 19, screw pump sucker rod 1 passes motor rotation axis 13 and transmits clamp 2 connections by moment of torsion, directly transmit Motor torque by connecting steel key 7, spindle nose 5 and sucker rod 1 are realized static seal by packing gland 3, packing 4, and spindle nose 5 and motor rotation axis 13 are realized static seal by O-ring seal 6.Described slips blowout preventer 23 is made up of slips and caulking gum two parts, is fixed in the interior pipe of threeway gathering line 24.
The concrete flow process of institute's extraction crude oil in this drive unit is: down-hole crude oil flows out well head during screw pump work under the effect of screw pump driving pressure, is flowed out in ground gathering line or other tankage of ground by threeway gathering line 24 on the one hand; On the other hand by the hollow seal pipe 15 in the threeway gathering line 24 inflow motor hollow shafts, because spindle nose 5 and sucker rod 1 are realized static seal by packing gland 3, packing 4; Spindle nose 5 and motor rotation axis 13 are realized static seal by O-ring seal 6; Realize mechanical seal between sealed tube 15 and the motor rotation axis 13, so this part oil stream is stopped.
In order to solve the problem that adopts ratchet, ratchet mechanical structure to damage down-hole sucker rod, oil pipe life-span easily and have potential safety hazard when existing screw bolt well sucker rod surface drive prevents the sucker rod counter-rotating, in the above on the basis of technical scheme, further improve the function that increases a kind of electromagnetic braking and save click, so that can in the time in 45 seconds, electromagnetic torque be reduced gradually, thereby alleviating gradually because of the moment of torsion of sucker rod distortion generation and discharging.Concrete scheme for in the motor power supply unit on the three-phase master current supply circuit of motor alternate one group of braking resistor of doing star-like connection in parallel, the input of this braking resistor with stop using by the control of the constant close contact on the main contacts relay, major loop figure is as shown in Figure 2.Need in the former actuator housing of screw bolt well motor, improve in conjunction with this improvement, finish electromagnetism counter-rotating braking with cooperation.In this actuator housing, form the anti-reverse electro-magnetic braking device of screw bolt well sucker rod by the following units, these unit are respectively Single-chip Controlling unit U1, IGBT driver element U2 and frequency control unit U3, as shown in Figure 3.Wherein Single-chip Controlling unit U1 mainly is made of single-chip microcomputer,, can select 89C52 type single-chip microcomputer for use here.Four signal input parts on the 89C52 type single-chip microcomputer receive respectively and come from three signals that photoelectric position sensor H1, H2, H3 transmit on screw bolt well stall button, the screw pump dc motor, we photoelectric position sensor H1, H2, H3 described here is meant and is installed in the interior electro-optical pickoff with the perception rotor-position of screw pump direct current drive machine stator, when motor rotor rotates, photoelectric position sensor H1, H2, the continuous conducting of H3 and end, these signals are transferred to single-chip microcomputer 89C52 by P011, P012, P013.
Frequency control unit U3 is made up of six groups of insulated gate bipolar transistor npn npns, and these six groups of insulated gate bipolar transistor npn npns connect into three-phase full wave rectifier circuit, and its three-phase exit is as drawing the external screw pump dc motor drive end of drive shell.
IGBT driver element U2 is made up of six groups of TLP250 type IGBT drive circuits, every group driving signal input is connected to the corresponding output end of single-chip microcomputer in the Single-chip Controlling unit, and every group IGBT drives the conducting trigger control end that signal output part is connected to corresponding insulated gate bipolar transistor npn npn in the frequency control unit.
Select for use TLP250 to drive IGBT and carry out direct current generator commutation, speed regulating control.The gate drive voltage of insulated gate bipolar transistor npn npn IGBT is generally 15V, and the shutoff negative bias voltage is 5V, and control circuit and main circuit isolation are realized by the photoelectricity coupling in TLP250 inside.Must know the position of rotor during the control dc motor, three photoelectric position sensors have been adopted in the direct current generator, rotation along with rotor, photoelectric sensor H1, H2, H3 be in turn conducting and ending constantly, these signals are defeated by single-chip microcomputer 89C52 by PO11, PO12, PO13 oral instructions, single-chip microcomputer output 1,2,3,4,5,6 pin are sent the control corresponding level, when 3 pin of the photoelectric coupling circuit of IGBT drive circuit TLP250 inside receive a low level, the gate drive voltage of IGBT is approximately 15V, the IGBT conducting of this road.When otherwise 3 pin received a high level, the gate drive voltage of IGBT was approximately-5V, and this road IGBT ends.Six IGBT drive circuit TLP250 along with incoming level changes, input time interval variation, can control cut-offfing of each IGBT, thereby realize the monitoring and the adjustment of rotating speed.After pressing screw pump stall button; send halt instruction by single-chip microcomputer; under programme-control, six outputs constantly prolong cut-offfing at interval of IGBT and constantly reduce control level, and motor output torque constantly reduces; when being lower than the anti-torque of sucker rod counter-rotating kinetic energy generation; sucker rod begins counter-rotating under motor torque control, through 30 seconds time, IGBT ended fully; sucker rod kinetic energy discharges to finish and stops, and realizes charged shutdown.
After taking such scheme; when needs are shut down; under the control action of single-chip microcomputer; the frequency control unit becomes the torque state of a control from the speed state of a control; electromagnetic torque reduces gradually in 30 seconds; the moment of torsion that drive link distortion is produced is alleviated gradually and is discharged, reduced shock loading thus, has prolonged the application life of sucker rod, oil pick-up tube.During electrical network integral body dead electricity, control circuit relay main contacts disconnects and cuts off drive circuit, the closed braking resistor that inserts of auxiliary contact, the screw pump sucker rod will produce high speed reverse rotation under the effect of elasticity kinetic energy this moment, and motor is in generating state, and the motor winding produces stalling current by braking resistor, the motor speed reversal is reduced, Electric Machine Control sucker rod counter-rotating rotating speed, sucker rod counter-rotating kinetic energy slowly discharges, up to stopping fully.
Owing to take such scheme, cancelled drive disk assemblies such as reducer in the existing drive unit, belt, transmission mechanism is simplified.The one, it is about 30% to descend with former type of drive contrast electric energy loss, and the regular maintenance expense significantly reduces; The 2nd, change high-speed rotary motor into the low speed rotation motor, improved the safety factor of wellhead equipment operation, avoided the generation of security incident; The 3rd, electromagnetic braking anti-reverse The Application of Technology has prolonged application life of screw pump sucker rod, pipe; The 4th, by the continuous adjustment of special purpose driver realization output speed, manufacturing parameter can be adjusted flexibly, when making things convenient for production management, has improved the crude output of individual well, has prolonged the pump detection period of screw pump; The 5th, the application of slips blowout preventer has reduced the plant maintenance workload.
Claims (2)
1. a direct ground driving gear of screw pump transmits clamp (2) by moment of torsion, packing gland (3), packing (4), spindle nose (5), O-ring seal (6), connect steel key (7), mechanically-sealing apparatus price fixing (8), motor upper cover alignment bearing (9), motor upper cover (10), mechanically-sealing apparatus Moving plate (11), sealed tube alignment bearing (12), motor rotation axis (13), electric machine casing (14), sealed tube (15), axial carrying cone bearing (16), motor bottom end cover (17), motor bottom end cover alignment bearing (18), flange connecting bolt (19), upper flanges dish (20), stationary gland (21), threeway connects O-ring seal (22), slips blowout preventer (23), threeway gathering line (24), flange connects column (25), the power supply unit of lower end flange (26) and motor constitutes;
To be called hollow shaft motor by the unit that mechanically-sealing apparatus price fixing (8), motor upper cover alignment bearing (9), motor upper cover (10), mechanically-sealing apparatus Moving plate (11), sealed tube alignment bearing (12), motor rotation axis (13), electric machine casing (14), sealed tube (15), axial carrying cone bearing (16), motor bottom end cover (17), motor bottom end cover alignment bearing (18) constitute, motor upper cover (10), electric machine casing (14), motor bottom end cover (17) are enclosed within on motor rotation axis (13) outer wall; Be embedded with an axial carrying cone bearing (16) at motor bottom end cover (17), motor rotation axis (13) is hollow, a hollow seal pipe of coaxial installation (15) in this axle; Be fixed with a cover mechanically-sealing apparatus between described sealed tube (15) and the motor rotation axis (13), be called mechanically-sealing apparatus price fixing (8) and mechanically-sealing apparatus Moving plate (11), fix by jackscrew between mechanically-sealing apparatus price fixing (8) and the sealed tube (15), pass through rubber sealing between mechanically-sealing apparatus Moving plate (11) and the motor-hollow axle (13), mechanically-sealing apparatus price fixing (8) and mechanically-sealing apparatus Moving plate (11) form work plane, realize mechanical seal; Be fixed with described sealed tube alignment bearing (12) outside sealed tube (15) and between the inwall of motor rotation axis (13); Motor upper cover alignment bearing (9) embeds in the motor upper cover (10), and motor bottom end cover alignment bearing (18) embeds in the motor bottom end cover (17); Threeway connection O-ring seal (22) is used for the sealing between sealed tube (15) and the threeway gathering line (24), and stationary gland (21) is passed through spiral marking connection with the bottom of sealed tube (15);
Described hollow shaft motor directly is fixed on the screw pump well head upper flanges dish (20) by flange connecting bolt (19), screw pump sucker rod (1) passes threeway gathering line (24), sealed tube (15) and spindle nose (5) back successively along the axis of motor rotation axis (13), and to transmit clamp (2) by moment of torsion fixing, spindle nose (5) cooperates with motor rotation axis (13) by connecting steel key (7), motor rotation axis (13) transmits clamp (2), spindle nose (5), connects steel key (7) drive screw pump sucker rod (1) rotation by moment of torsion, thereby directly transmits Motor torque; Spindle nose (5) and sucker rod (1) are realized static seal by packing gland (3), packing (4), and spindle nose (5) and motor rotation axis (13) are realized static seal by O-ring seal (6);
Described slips blowout preventer (23) is made up of slips and caulking gum two parts, is fixed in the interior pipe of threeway gathering line (24); Flange connects column (25) and connects upper and lower end flange (20,26).
2. a kind of direct ground driving gear of screw pump according to claim 1, it is characterized in that: in the described motor power supply unit on the three-phase master current supply circuit of motor alternate one group of braking resistor of doing star-like connection in parallel, the input of this braking resistor is controlled by the constant close contact on the main contacts relay with stopping using.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101092788A CN100383363C (en) | 2006-08-08 | 2006-08-08 | Direct ground driving gear of screw pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101092788A CN100383363C (en) | 2006-08-08 | 2006-08-08 | Direct ground driving gear of screw pump |
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| CN1908434A CN1908434A (en) | 2007-02-07 |
| CN100383363C true CN100383363C (en) | 2008-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006101092788A Active CN100383363C (en) | 2006-08-08 | 2006-08-08 | Direct ground driving gear of screw pump |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103855859A (en) * | 2014-03-04 | 2014-06-11 | 浙江德清西传电气科技有限公司 | Screw pump direct drive motor with mechanical brake |
| CN104481463A (en) * | 2014-11-24 | 2015-04-01 | 马琳琳 | Rotating tube driving screw pump oil production device and application method |
| CN105490591A (en) * | 2016-01-11 | 2016-04-13 | 南京康尼机电股份有限公司 | Outage self-lock apparatus for actuator |
| CN106968643A (en) * | 2017-05-19 | 2017-07-21 | 大庆市晟威机械制造有限公司 | A kind of screw pump direct-driving device of utilization hydraulic braking polished rod |
| CN110336491A (en) * | 2019-08-05 | 2019-10-15 | 南京康尼智控技术有限公司 | Cut off self-lock electric system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2226657Y (en) * | 1994-10-10 | 1996-05-08 | 沈阳新阳机器制造公司 | Screw oil-well pump integral ground drive unit |
| CN2237712Y (en) * | 1995-05-26 | 1996-10-16 | 大庆石油管理局 | Suction matching device for hollow rod rotary bolt pump sleeve |
| CN1683791A (en) * | 2005-03-02 | 2005-10-19 | 胜利油田胜利电器有限责任公司 | Directly driving screw pump device |
| US20060090893A1 (en) * | 2004-11-04 | 2006-05-04 | Schlumberger Technology Corporation | Plunger Lift Apparatus That Includes One or More Sensors |
-
2006
- 2006-08-08 CN CNB2006101092788A patent/CN100383363C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2226657Y (en) * | 1994-10-10 | 1996-05-08 | 沈阳新阳机器制造公司 | Screw oil-well pump integral ground drive unit |
| CN2237712Y (en) * | 1995-05-26 | 1996-10-16 | 大庆石油管理局 | Suction matching device for hollow rod rotary bolt pump sleeve |
| US20060090893A1 (en) * | 2004-11-04 | 2006-05-04 | Schlumberger Technology Corporation | Plunger Lift Apparatus That Includes One or More Sensors |
| CN1683791A (en) * | 2005-03-02 | 2005-10-19 | 胜利油田胜利电器有限责任公司 | Directly driving screw pump device |
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| CN1908434A (en) | 2007-02-07 |
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Effective date of registration: 20200924 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee after: PetroChina Co.,Ltd. Patentee after: Daqing Oilfield Co.,Ltd. Address before: 163453 Heilongjiang Province, Daqing City Ranghulu Changqing business services four district 4 Building No. 13 Patentee before: Daqing Oilfield Co.,Ltd. |