CN205955714U - Screw pump oil production device with heat mechanism under pump - Google Patents

Abstract

The utility model discloses a screw pump oil production device with heat mechanism under pump, including the multisection that sets up in the pit and top -down connects gradually first electrically conduct pass moment of torsion sucker rod, hollow spiral shell sucker -rod pumping rotor, second can electrically conduct pass the moment of torsion sucker rod, prevent putting deviation correcting device, the electrically conductive quiet conversion connection device of moving and heating device, connect through conductive electric cable between above -mentioned each part and set up and form the electricity in the conductive plugs of each part tip or electrically conductive socket looks interfix dress and connect to threaded connection is fixed in proper order through the connection coupling of setting in two part junctions, this screw pump oil production device with heat mechanism under pump and adoption method have been solved and can only have been heated the viscosity reduction demand in the time of especially satisfying deep well deep thickened oil, high pour -point oil screw pump oil production for the difficult problem of pump top heating in the past when viscous crude, high pour -point oil screw pump oil production.

Description

A kind of screw pump oil production device with heating arrangements under pump

Technical field

The utility model is related to oil and gas exploitation technical field, particularly to a kind of spiral shell with heating arrangements under pump Bar pump oil extracting device.

Background technology

Offshore platform coagulates in high viscosity heavy oil well test discharge opeing and recovery process in combustible ice, height at present, commonly used screw rod Pump, simultaneously for increasing its pump efficiency, needs the viscous crude flowing in pit shaft, high solidifying oily and marine low-temperature oil to be heated, to reduce Its viscosity, prevent wax deposition and be easy to flow.Generally electric heater unit can only heat to screw pump above section, and under pump Partially due to the factor such as rotation can not cross electrical heating, particularly in deep-well, screw pump can not due to reasons such as lift, power limit Under more deeply spend in oil reservoir position or pit shaft, lead to the high solidifying oil of viscous crude to be not easily accessible in pump, make pump efficiency low.

At present, screw pump oil production discharge opeing heater has multiple published technology, such as：Disclosed patent screw pump oil production Electric heater unit (application number：200820123813.X) disclosing a kind of screw pump oil production heating means, its mode of heating adopts Dose heating cable in hollow rod, be only and partly heat on pump；Another disclosed patent oil reservoir electrical heating is recovered the oil Device and its using method (application number：2014 1009 8385.X) disclose a kind of oil reservoir electrical heating oil extracting apptss, include Switch board, cored screw pump etc., its mode of heating is to be close to be fixed with many by multiple strain relief clamps in the outside wall surface of oil pipe Steel armour heating cable etc., there are construction complexity, because cable laying is on oil-pipe external wall, direct and casing-contact, and easily occur Collision is broken de- etc.

Utility model content

The purpose of this utility model be provide a kind of be applied to viscous crude, high solidifying oily and marine low-temperature oil collection there is pump The screw pump oil production device of lower heating arrangements.

Of the present utility model another object is that provide a kind of using the above-mentioned dress of the screw pump oil production with heating arrangements under pump Put the oil production method of realization.

For this reason, technical solutions of the utility model are as follows：

A kind of screw pump oil production device with heating arrangements under pump, including being arranged on down-hole and be sequentially connected from top to bottom More piece first can conductive transmission torque sucker rod, hollow screw pump rotor, second can conductive transmission torque sucker rod, anti-sway correction dress Put, conductive quiet dynamic conversion attachment means and heater, connected by conductive cable between above-mentioned each part and be arranged at each portion The conductive plug of part end or the mutual plug-in mounting of electrically conductive socket form electrical connection, and are connect by being arranged on the connection of two part junctions Hoop threaded fixation successively.

The screw pump oil production device that this has heating arrangements under pump also includes setting and connects successively on the ground and from top to bottom Motor, screw pump drive head and the oil well four-way connecing；Motor is connected with special switch board by cable.

Can conductive transmission torque sucker rod be used for for produced for ground driving head torque power being transferred to bolt special pump, to drive Dynamic discharge opeing produces, and torque power is transferred to device under pump；Pass through the cable of setting and inner side simultaneously, electric power is reached Heater under pump.Specifically, can conductive transmission torque sucker rod include being successively set on from top to bottom an inwall be covered with 2～ Conductive plug in the hollow rod of 3mm thick dielectric layer, energising cable and electrically conductive socket, conductive plug and electrically conductive socket are respectively Arrange and be fixed on hollow rod top and bottom, and make to be formed electricity between conductive plug and electrically conductive socket by the cable that is energized Connect；Or include being successively set on the conduction that an inwall is covered with the hollow rod of 2～3mm thick dielectric layer from top to bottom and insert Head, energising cable and conductive plug, two conductive plugs are respectively provided with and are fixed on hollow rod top and bottom, and pass through Energising cable makes to be formed electrical connection between two conductive plugs.

Hollow screw pump rotor is the hollow-core construction of particular design, interior edge energising cable, the anti-sway deviation correcting device of lower end connection, Conductive quiet dynamic adaptor substitute device and heater；In addition to for discharge opeing, its interior cable, electric power is reached adding under pump Thermal；Specifically, hollow screw pump rotor includes center and offers the rotor body of axially extending bore and be arranged on rotor body It is provided with an electrically conductive socket, two electrically conductive sockets lead in the top connection of top and bottom and lower contact, top connection and lower contact Cross the conductive cable being arranged in rotor body axially extending bore and form electrical connection.

Because screw pump rotor has eccentric angle in rotary course, therefore connect anti-sway correction dress in screw pump rotor lower end Put, eliminate the swing bringing due to eccentric angle in screw pump rotor rotary course, it is to avoid tool tubular column below will be put Dynamic, impact pump efficiency clashes into sleeve pipe with swinging, so that causing the accident；There is the function of electric power transmission simultaneously；Specifically, anti-sway Deviation correcting device includes deviation correction mechanism and power transfer mechanism, and deviation correction mechanism center offers through hole, and power transfer mechanism is arranged simultaneously It is fixed on inside deviation correction mechanism；Wherein, deviation correction mechanism includes upper swivel cougling, the cross hollow joint being sequentially connected from top to bottom With lower swing joint；Cross hollow joint includes a center and offers the cylindrical body of through hole and uniform along body circumferencial direction And four axially vertical with body cylindrical hangers；Upper swivel cougling and lower swing joint are upper with cross hollow joint respectively One group of hangers in offside is flexibly connected, and so that swivel cougling and lower swing joint all can be swung with the hangers connecting for axle； Power transfer mechanism includes conductive plug, conductive cable and the electrically conductive socket being sequentially connected from top to bottom；By being coated on conduction The insulating barrier of plug, conductive cable and electrically conductive socket outer wall and the first pressure cap and the setting that are separately positioned on swivel cougling bottom In swivel cougling on the second pressure cap of lower swing nipple tip makes conductive plug arrange and is fixed on, electrically conductive socket arranges and consolidates It is scheduled in lower swing joint.

Conductive quiet dynamic conversion attachment means adopt running contact structure, built-in thrust bearing, so that the rotary system on top is led to Cross its switch to static, even if its following device not with rotor rotate, extremely swim heater electric power being reached under pump simultaneously Function；Specifically, conductive quiet dynamic conversion attachment means include the conductive copper setting gradually from top to bottom in a rotation outer tube Rod, lever mechanism and quiet linkage；Conductive copper rod offers an axial notch cooperating with conductive plug from top surface；Lever Mechanism includes the spring being arranged in a spring casing and copper conduction lever, and spring casing is arranged on rotation outer tube top and leads to Cross an insulation rubber cushion to separate, copper conduction lever is against on spring and will by the first pressure cap being installed in copper conduction lever Spring retainer and keeps spring to be in compressive state all the time in spring casing；Quiet linkage includes the conductive quiet bar of silvery and opens up There is the T connector of axially extending bore, T connector is arranged on rotation outer tube by two rolling bearings being installed on outside T connector Inner side；The conductive quiet bar of silvery includes tubular top and the cylindrical lower portion of top end opening, the cylindrical lower portion of the conductive quiet bar of silvery It is inserted in the axially extending bore of T junction, grafting is formed at the tubular top of top end opening and copper conduction lever, and in lever machine In the presence of structure inner spring, the conductive quiet bar of silvery remains, with copper conduction lever, the state contacting；Second pressure cap is installed on It is connected on the conductive quiet bar of silvery and with the ring-shaped step of rotation outer tube.

Electric heater unit includes axially arranged electrically heated rod and is arranged on the conductive plug at electrically heated rod top；Specifically Ground, electric heater unit constitutes The electric loop by hollow sucker rod and single-core cable, is additionally provided with an end in the bottom of hollow sucker rod End loop converter, makes electric current produce the multiple effect of collection by the inside of bar body again after terminal converter, so that bar is generated Heat, reaches heating effect.

Above-mentioned first can conductive transmission torque sucker rod, hollow screw pump rotor, second can conductive transmission torque sucker rod, anti-sway The conductive plug of setting and electrically conductive socket structure, size phase in deviation correcting device, conductive quiet dynamic conversion attachment means and heater With.Specifically, conductive plug includes the first copper rod and is arranged on thin copper bar on the first copper rod top surface；Electrically conductive socket includes the second bronze medal Rod, caves inward from the second copper rod bottom surface and offers an axial socket being used for plug-in mounting conductive plug；Open up from thin copper bar top Have one thin copper bar top is divided into the axial deep trouth of two lobes, be provided with a waveform reed in axial deep trouth, make thin copper bar After insertion axial socket, thin copper bar top two-flap type structure expands outwardly under the elastic force effect of reed, with axial socket inwall Remain contact condition；Employing between 2～3mm for a layer thickness is covered with the outer wall of the first copper rod and the second copper rod The insulating barrier that polyethersulfone ketone is made.

Compared with prior art, the screw pump oil production device that this has heating arrangements under pump solves in the past in viscous crude, height Solidifying screwrod pump is only, when recovering the oil, the difficult problem partly heating on pump, particularly can meet deep-well deep-layer heavy crude, high solidifying whelk bar Heating, viscosity reducing demand when pump recovers the oil.

Brief description

Fig. 1 (a) is the first half of the screw pump oil production device downhole hardware with heating arrangements under pump of the present utility model Separation structure schematic diagram；

Fig. 1 (b) is the lower half of the screw pump oil production device downhole hardware with heating arrangements under pump of the present utility model Separation structure schematic diagram；

Fig. 2 is the structural representation with the screw pump oil production device of heating arrangements under pump of the present utility model；

Fig. 3 is the annexation schematic diagram of test string and screw pump before of the present utility model oil recovery.

Specific embodiment

Below in conjunction with the accompanying drawings and specific embodiment is described further to the utility model, but following embodiment is right absolutely not The utility model has any restriction.

As shown in Fig. 2 this screw pump oil production device with heating arrangements under pump is made up of above ground portion and underground part； Wherein, above ground portion includes motor, screw pump drive head and the oil well four-way being sequentially connected from top to bottom；Motor leads to Cross cable to be connected with special switch board；

As shown in Fig. 1 (a) and Fig. 1 (b), the more piece first that underground part includes being sequentially connected from top to bottom can conductive torsion pass Square sucker rod 7, hollow screw pump rotor 8, second can conductive transmission torque sucker rod 9, anti-sway deviation correcting device 10, conductive quiet dynamic conversions Attachment means 11 and heater 12.

First can have two kinds of structures by conductive transmission torque sucker rod 9 by conductive transmission torque sucker rod 7 and second：Can conductive pass Moment of torsion sucker rod includes being successively set on the conduction that an inwall is covered with the hollow rod of 2～3mm thick dielectric layer from top to bottom Plug, energising cable and electrically conductive socket, conductive plug and electrically conductive socket are respectively provided with and are fixed on hollow rod top and bottom End, and make to be formed electrical connection between conductive plug and electrically conductive socket by the cable that is energized；Or include being successively set on from top to bottom One inwall is covered with conductive plug in the hollow rod of 2～3mm thick dielectric layer, energising cable and conductive plug, two conductions Plug is respectively provided with and is fixed on hollow rod top and bottom, and makes to be formed between two conductive plugs by the cable that is energized Electrical connection；.

Can the joint number of conductive transmission torque sucker rod be adapted with the distance on ground to purpose producing horizon, you can by many The conductive plug of conductive transmission torque sucker rod head and the tail and the mutual plug-in mounting of electrically conductive socket the energy by being arranged on the two junction The tubular rod collar of enough activity dismountings is threaded to be fixed as one and has can taking out conductive transmission torque of suitable connecting length Beam hanger 7 is gone here and there.

Hollow screw pump rotor 8 is to be improved on the architecture basics of common screw pump rotor；Specifically, hollow spiral shell Bar pump rotor 8 top and bottom are respectively provided with integrally formed top connection and lower contact, and its center offers one and is used for arranging The axially extending bore of energising cable；It is each provided with an electrically conductive socket in top connection and lower contact, two electrically conductive sockets pass through energising Cable forms electrical connection；Make hollow screw pump rotor 8 upper end pass through electrically conductive socket can conductive to pass with superposed more piece first The conductive plug grafting of sucker rod string bottom that moment of torsion sucker rod 7 is constituted, lower end can conductive transmission torques with positioned at the second of bottom The conductive plug grafting on sucker rod 9 top, and make first can take out conductive transmission torque by being arranged on the connection coupling of link position Sucker rod string that beam hanger 7 is constituted, hollow screw pump rotor 8 and second can the conductive threaded fixation of transmission torque sucker rod 9 three And form stable electrical connection it is ensured that the stable conveying of electric power；

Anti-sway deviation correcting device 10 includes deviation correction mechanism and power transfer mechanism, and deviation correction mechanism center offers through hole, electric power Transmission mechanism arranges and is fixed on inside deviation correction mechanism；Wherein, the upper swing that deviation correction mechanism includes being sequentially connected from top to bottom connects Head, cross hollow joint and lower swing joint；Cross hollow joint includes cylindrical body and the edge that a center offers through hole Four uniform and axially vertical with body cylindrical hangers of body circumferencial direction；Upper swivel cougling and lower swing joint respectively with One group of hangers being located at offside on cross hollow joint is flexibly connected, and makes swivel cougling and the lower swing joint all can be to connect Hangers be axle swing；Power transfer mechanism includes conductive plug, conductive cable and the electrically conductive socket being sequentially connected from top to bottom； By being coated on the insulating barrier of conductive plug, conductive cable and electrically conductive socket outer wall and being separately positioned on upper swivel cougling bottom First pressure cap makes conductive plug arrange and is fixed in swivel cougling with the second pressure cap being arranged on lower swing nipple tip, leads Electrical socket arranges and is fixed in lower swing joint.

Conductive quiet dynamic conversion attachment means include conductive copper rod, the lever setting gradually from top to bottom in a rotation outer tube Mechanism and quiet linkage；Conductive copper rod offers an axial notch cooperating with conductive plug from top surface；Lever mechanism wraps Include the spring being arranged in a spring casing and copper conduction lever, spring casing is arranged on rotation outer tube top and passes through one exhausted Edge rubber cushion separates, and copper conduction lever is against on spring and is limited spring by the first pressure cap being installed in copper conduction lever In spring casing and keep spring to be in compressive state all the time；Quiet linkage includes the conductive quiet bar of silvery and offers axial direction The T connector of through hole, T connector passes through two rolling bearings being installed on outside T connector and is arranged on inside rotation outer tube；Silver Make tubular top and the cylindrical lower portion that conductive quiet bar includes top end opening, the cylindrical lower portion of the conductive quiet bar of silvery is inserted into T The axially extending bore of shape joint is interior, grafting is formed at the tubular top of top end opening and copper conduction lever, and bullet in lever mechanism In the presence of spring, the conductive quiet bar of silvery remains, with copper conduction lever, the state contacting；Second pressure cap is installed on silvery and leads It is connected on the quiet bar of electricity and with the ring-shaped step of rotation outer tube.

Wherein, conductive in the enclosed construction outer layer of conductive copper rod outer layer, spring casing and the first pressure cap composition and silvery The cylindrical lower portion of quiet bar is all coated with insulating barrier；Rotation outer tube lumen loading has insulated enclosure fat；Insulating barrier is divided using superelevation Sub- polyethylene or high density polyethylene (HDPE) are made；Insulated enclosure fat main component is silicone oil.Logical between second pressure cap and rotation outer tube Cross Glais ring and form sealing.

Heater constitutes The electric loop by hollow sucker rod and single-core cable, is additionally provided with one in the bottom of hollow sucker rod End-loopback converter, makes electric current produce the multiple effect of collection by the inside of bar body again after terminal converter, so that bar is given birth to Become heat, reach heating effect.

Above-mentioned first can conductive transmission torque sucker rod 7, hollow screw pump rotor 8, second can conductive transmission torque sucker rod 9, The conductive plug of setting and electrically conductive socket knot in anti-sway deviation correcting device 10, conductive quiet dynamic conversion attachment means 11 and heater 12 Structure, equivalently-sized；Specifically, conductive plug includes the first copper rod and is arranged on thin copper bar on the first copper rod top surface；Electrically conductive socket Including the second copper rod, cave inward from the second copper rod bottom surface and offer an axial socket being used for plug-in mounting conductive plug；From thin copper Excellent top offers an axial deep trouth that thin copper bar top is divided into two lobes, is provided with a waveform spring in axial deep trouth Piece, after making thin copper bar insert axial socket, thin copper bar top two-flap type structure expands outwardly under the elastic force effect of reed, with axle Remain contact condition to slot inwall；A layer thickness is covered with the outer wall of the first copper rod and the second copper rod in 2～3mm Between the insulating barrier made using polyethersulfone ketone.

Additionally, for ensureing to be tightly connected between each part in device, the faying face that each part forms contact is respectively provided with There is at least one sealing ring.

A kind of oil production method realized using the above-mentioned screw pump oil production device with heating arrangements under pump：To connect first There is the test string G.I.H certain depth of different screw pump stator, complete the work such as test, sampling, pressure；When needing screw rod During pump discharge opeing, in test string under enter to have the screw pump oil production device underground part of heating arrangements under pump, and connect and adopt Oily device above ground portion, switch board 16 is passed through anti-explosion terminal box and is connected with the converter of output cable and the driving head 14 on well head top Connect, heated current is delivered to cable under pump to the terminal organ of bottommost by cable, hollow stem inside cable and is heated；Logical Cross heated power cable pass sequentially through more piece first can conductive transmission torque sucker rod 7, hollow screw pump rotor 8, second can be conductive Transmission torque sucker rod 9, anti-sway deviation correcting device 10 and conductive quiet dynamic conversion attachment means 11, and finally power to heater 12, with Shi Qidong screw pump rotor 8, now the viscous crude under pump or high solidifying oil are heated, and its viscosity reduces and easily flows, can mining effectively Go out the high solidifying oil of viscous crude in well.

Specifically, above-mentioned oil production method comprises the following steps that：

S1, by the test string having configured pass through by oil pipe or drilling rod 1 G.I.H purpose depth of stratum, by test After packer 4 on tubing string is set, carry out formation testing, complete test, sampling and pressure work；

Wherein, test string, as shown in figure 3, include bottom testing tool 5, formation testing packer successively from bottom to top 4th, formation test tool valve 3 and screw pump stator 2, pass through between above-mentioned each part oil pipe or drilling rod 1 connect and pass through oil pipe or Drilling rod 1 extends at well head；Screw pump stator 2 bottom inwall is provided with ring-shaped step and is used for limiting screw pump rotor later stage input Put in place；

S2, in test string under enter to have the screw pump oil production device tubing string of heating arrangements under pump, tubing string passes through more piece Can conductive transmission torque sucker rod 7 extend at well head；Wherein, when the screw pump on screw pump rotor 8 bottom with test string is fixed The limiting stand shoulder grafting of sub 2 bottoms after touch, shows that screw pump stator 2 and screw pump rotor 8 are installed in place, by heated power cable Power to heater 12, start heater 12, so that the viscous crude under pump or high solidifying oil is reduced by thermoviscosity, easily flow；Then Motor energising starts screw pump 2 by screw pump drive head and rotates, and mining goes out viscous crude or high solidifying oil in well.

In sum, the screw pump oil production device with heating arrangements under pump of the present utility model, can make cable penetration spiral shell Bar pump sleeve rotor, the quiet dynamic adaptor substitute device of conduction working in the connection of its lower end, anti-sway deviation correcting device and heater, logical When crossing it and passing to power electric, the high solidifying oil of the viscous crude under pump is heated so as to viscosity reduces easily flows, and improves pump efficiency, solves When recovering the oil, the difficult problem partly heating was only on pump in viscous crude, high solidifying screwrod pump in the past, and particularly can meet deep-well deep layer thick Heating, viscosity reducing demand when oil, high solidifying screwrod pump mining.There is compact conformation, easy to adjust it is easy to control, be the high solidifying oil of viscous crude And the ideal equipment of sea low temperature oil layer exploitation.

Claims (8)

1. a kind of screw pump oil production device with heating arrangements under pump is it is characterised in that include being arranged on down-hole and from upper Under the more piece first that is sequentially connected can conductive transmission torque sucker rod (7), hollow screw pump rotor (8), second can conductive transmission torque Sucker rod (9), anti-sway deviation correcting device (10), conductive quiet dynamic conversion attachment means (11) and heater (12), above-mentioned each part Between connect and be arranged at the conductive plug of each ends by conductive cable or the mutual plug-in mounting of electrically conductive socket forms electrical connection, And by being arranged on the connection coupling threaded fixation successively of two part junctions.

2. the screw pump oil production device with heating arrangements under pump according to claim 1 is it is characterised in that also include setting Put the motor (13) being sequentially connected on the ground and from top to bottom, screw pump drive head (14) and oil well four-way (15)；Drive Dynamic motor (13) is connected with special switch board by cable.

3. the screw pump oil production device with heating arrangements under pump according to claim 1 is it is characterised in that can conductive pass Moment of torsion sucker rod includes being successively set on the conduction that an inwall is covered with the hollow rod of 2～3mm thick dielectric layer from top to bottom Plug, energising cable and electrically conductive socket, conductive plug and electrically conductive socket are respectively provided with and are fixed on hollow rod top and bottom End, and make to be formed electrical connection between conductive plug and electrically conductive socket by the cable that is energized；Or include being successively set on from top to bottom One inwall is covered with conductive plug in the hollow rod of 2～3mm thick dielectric layer, energising cable and conductive plug, two conductions Plug is respectively provided with and is fixed on hollow rod top and bottom, and makes to be formed between two conductive plugs by the cable that is energized Electrical connection.

4. the screw pump oil production device with heating arrangements under pump according to claim 3 is it is characterised in that hollow screw rod Pump rotor (8) inclusion center offer axially extending bore rotor body and be arranged on rotor body top and bottom top connection and It is provided with an electrically conductive socket, two electrically conductive sockets are by being arranged on rotor body axially in lower contact, top connection and lower contact Conductive cable in through hole forms electrical connection.

5. the screw pump oil production device with heating arrangements under pump according to claim 1 is it is characterised in that anti-sway correction Device (10) includes deviation correction mechanism and power transfer mechanism, and deviation correction mechanism center offers through hole, and power transfer mechanism is arranged simultaneously It is fixed on inside deviation correction mechanism；Wherein, deviation correction mechanism includes upper swivel cougling, the cross hollow joint being sequentially connected from top to bottom With lower swing joint；Cross hollow joint includes a center and offers the cylindrical body of through hole and uniform along body circumferencial direction And four axially vertical with body cylindrical hangers；Upper swivel cougling and lower swing joint respectively with cross hollow joint on One group of hangers positioned at offside is flexibly connected, and so that swivel cougling and lower swing joint all can be put with the hangers connecting for axle Dynamic；Power transfer mechanism includes conductive plug, conductive cable and the electrically conductive socket being sequentially connected from top to bottom；Led by being coated on The insulating barrier of plug, conductive cable and electrically conductive socket outer wall and be separately positioned on the first pressure cap of swivel cougling bottom and set Put in swivel cougling on the second pressure cap of lower swing nipple tip makes conductive plug arrange and is fixed on, electrically conductive socket is arranged simultaneously It is fixed in lower swing joint.

6. the screw pump oil production device with heating arrangements under pump according to claim 1 is it is characterised in that conduction is quiet dynamic Conversion attachment means (11) includes conductive copper rod, lever mechanism and the quiet bar machine setting gradually from top to bottom in a rotation outer tube Structure；Conductive copper rod offers an axial notch cooperating with conductive plug from top surface；Lever mechanism includes being arranged on a bullet Spring in spring casing and copper conduction lever, spring casing is arranged on rotation outer tube top and is separated by an insulation rubber cushion, Copper conduction lever is against on spring and is protected spring retainer in spring by the first pressure cap being installed in copper conduction lever Cylinder is interior and keeps spring to be in compressive state all the time；Quiet linkage includes the conductive quiet bar of silvery and offers the T-shaped of axially extending bore Joint, T connector passes through two rolling bearings being installed on outside T connector and is arranged on inside rotation outer tube；Silvery conduction is quiet Bar includes tubular top and the cylindrical lower portion of top end opening, and the cylindrical lower portion of the conductive quiet bar of silvery is inserted into T junction Axially extending bore is interior, grafting is formed at the tubular top of top end opening and copper conduction lever, and the effect in lever mechanism inner spring Under, the conductive quiet bar of silvery remains, with copper conduction lever, the state contacting；Second pressure cap is installed on the conductive quiet bar of silvery And be connected with the ring-shaped step of rotation outer tube.

7. the screw pump oil production device with heating arrangements under pump according to claim 1 is it is characterised in that heater (12) axially arranged electrically heated rod and the conductive plug being arranged on electrically heated rod top are included.

8. the screw pump oil production device with heating arrangements under pump according to one of claim 3～7 it is characterised in that Conductive plug includes the first copper rod and is arranged on thin copper bar on the first copper rod top surface；Electrically conductive socket includes the second copper rod, from second Copper rod bottom surface caves inward and offers an axial socket being used for plug-in mounting conductive plug；Offer one from thin copper bar top by thin copper Excellent top is divided into the axial deep trouth of two lobes, is provided with a waveform reed in axial deep trouth, so that thin copper bar is inserted and axially inserts After groove, thin copper bar top two-flap type structure expands outwardly under the elastic force effect of reed, remains with axial socket inwall and connects Tactile state；Employing polyethersulfone ketone system between 2～3mm for a layer thickness is covered with the outer wall of the first copper rod and the second copper rod The insulating barrier becoming.