CN106194136B - A kind of screw pump oil production device and its oil production method with pump lower heating mechanism - Google Patents
A kind of screw pump oil production device and its oil production method with pump lower heating mechanism Download PDFInfo
- Publication number
- CN106194136B CN106194136B CN201610754890.4A CN201610754890A CN106194136B CN 106194136 B CN106194136 B CN 106194136B CN 201610754890 A CN201610754890 A CN 201610754890A CN 106194136 B CN106194136 B CN 106194136B
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- conductive
- screw pump
- pump
- rod
- electrically conductive
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
- E21B43/2401—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection by means of electricity
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B36/00—Heating, cooling, insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/006—Combined heating and pumping means
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B36/00—Heating, cooling, insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/04—Heating, cooling, insulating arrangements for boreholes or wells, e.g. for use in permafrost zones using electrical heaters
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
- F04D13/10—Units comprising pumps and their driving means the pump being electrically driven for submerged use adapted for use in mining bore holes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D3/00—Axial-flow pumps
- F04D3/02—Axial-flow pumps of screw type
Abstract
The invention discloses a kind of screw pump oil production devices and its oil production method with pump lower heating mechanism, attachment device and heating device are changed including in underground and the from top to bottom electrically conductive transmission torque sucker rod of sequentially connected more piece first, hollow screw pump rotor, the second electrically conductive transmission torque sucker rod, anti-sway deviation correcting device, conductive quiet turn is arranged, the conductive plug of each ends is connected and be set between above-mentioned each component by conductive cable or electrically conductive socket mutually inserts formation electrical connection, and the connection coupling by the way that two component junctions are arranged in successively is threadedly coupled fixation；It solves the problems, such as that being only the upper part of pump when viscous crude, high solidifying screwrod pump recover the oil in the past heats using method by what the above-mentioned screw pump oil production device with pump lower heating mechanism and the application device were realized, is especially able to satisfy deep-well deep-layer heavy crude, heating, viscosity reducing demand when high solidifying screwrod pump recovers the oil.
Description
Technical field
The present invention relates to oil and gas exploration technology field, in particular to a kind of screw pump with pump lower heating mechanism
Extracting device of oil and its oil production method.
Background technique
Offshore platform generallys use screw rod in combustible ice, high solidifying high viscosity heavy oil well test drain and recovery process at present
Pump, while to increase its pump efficiency, it needs to heat the viscous crude flowed into pit shaft, high solidifying oil and marine low-temperature oil, to reduce
Its viscosity prevents wax deposition and convenient for flowing.Usual electric heater unit can only heat screw pump above section, and under pumping
Partially due to the factors such as rotation cannot cross electric heating, especially in deep-well, screw pump cannot due to lift, power limit etc.
Under in oil reservoir position or pit shaft deeper depth, cause viscous crude height coagulate oil be not easily accessible in pump, keep pump efficiency low.
Currently, screw pump oil production drain heating device has multiple published technologies, such as: publication screw pump oil production
Electric heater unit (application number: 200820123813.X) discloses a kind of screw pump oil production heating means, and heating method uses
Heating cable is dosed in hollow rod, is only the upper part of pump and is heated；Another publication oil reservoir electric heating is recovered the oil
Device and its application method (application number: 2,014 1009 8385.X) disclose a kind of oil reservoir electrical heating oil extracting apptss, include
Control cabinet, cored screw pump etc., heating method be oil pipe outside wall surface by multiple strain relief clamps abutting be fixed with more
Steel armour heats cable etc., and it is complicated that there are constructions, since cable laying is on oil-pipe external wall, directly and casing-contact, easily occurs
Collision is broken de- etc.
Summary of the invention
The object of the present invention is to provide a kind of suitable for viscous crude, high solidifying oil and marine low-temperature oil acquisition have pump lower plus
The screw pump oil production device of heat engine structure.
It is real using the above-mentioned screw pump oil production device with pump lower heating mechanism that it is a further object of the present invention to provide a kind of
Existing oil production method.
For this purpose, technical solution of the present invention is as follows:
A kind of screw pump oil production device with pump lower heating mechanism, including be arranged and be sequentially connected in underground and from top to bottom
The electrically conductive transmission torque sucker rod of more piece first, hollow screw pump rotor, the second electrically conductive transmission torque sucker rod, anti-sway correction dress
Set, conductive quiet turn changes attachment device and heating device, by conductive cable connection and be set to each portion between above-mentioned each component
The conductive plug or electrically conductive socket of part end mutually insert formation electrical connection, and the connection by the way that two component junctions are arranged in connects
Hoop is successively threadedly coupled and fixes.
It further includes that setting successively connects on the ground and from top to bottom that this, which has the screw pump oil production device of pump lower heating mechanism,
Driving motor, screw pump drive head and the oil well four-way connect；Driving motor is connect by cable with dedicated control cabinet.
Electrically conductive transmission torque sucker rod is used to for torque power produced by the driving head of ground to be transferred to bolt special pump, to drive
Dynamic drain production, and torque power is transferred to the lower device of pump；Simultaneously by the cable of setting and inside, electric power is reached
Heating device under pump.Specifically, electrically conductive transmission torque sucker rod include be successively set on from top to bottom an inner wall be covered with 2~
Conductive plug, energization cable and electrically conductive socket in the hollow rod of 3mm thick dielectric layer, conductive plug and electrically conductive socket difference
It is arranged and is fixed on hollow rod top and bottom end, and makes to form electricity between conductive plug and electrically conductive socket by energization cable
Connection；Or the conduction being covered in the hollow rod of 2~3mm thick dielectric layer including being successively set on an inner wall from top to bottom is inserted
Head, energization cable and conductive plug, two conductive plugs are respectively set and are fixed on hollow rod top and bottom end, and pass through
Energization cable makes to form electrical connection between two conductive plugs.
Hollow structure of the hollow screw pump rotor for special designing, interior edge energization cable, the anti-sway deviation correcting device of lower end connection,
Conductive quiet dynamic adaptor substitute device and heating device；Except in addition to drain, in cable, electric power reaches to pump is lower to be added
Thermal；Specifically, hollow screw pump rotor includes that center offers the rotor body of axially extending bore and is arranged in rotor body
The top connection and lower contact on top and bottom end, an electrically conductive socket is provided in top connection and lower contact, and two electrically conductive sockets are logical
It crosses the conductive cable being arranged in rotor body axially extending bore and forms electrical connection.
Since screw pump rotor has eccentric angle in rotary course, anti-sway correction dress is connected in screw pump rotor lower end
It sets, eliminates since eccentric angle bring is swung in screw pump rotor rotary course, tool tubular column below is avoided to put
It is dynamic, it influences pump efficiency and swings to hit casing, so that causing the accident；Has 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 the inside of deviation correction mechanism；Wherein, deviation correction mechanism includes sequentially connected upper swivel cougling, cross hollow connector from top to bottom
With lower swing connector；Cross hollow connector includes that a center offers the cylindrical body of through-hole and is evenly distributed with along ontology circumferencial direction
And the axially vertical four cylindrical hangers with ontology；Upper swivel cougling and lower swing connector are upper with cross hollow connector respectively
One group of hangers in opposite side is flexibly connected, and swing swivel cougling and lower swing connector can with the hangers axis of connection；
Power transfer mechanism includes sequentially connected conductive plug, conductive cable and electrically conductive socket from top to bottom；By being coated on conduction
Plug, conductive cable and electrically conductive socket outer wall insulating layer and be separately positioned on the first pressure cap and the setting of swivel cougling bottom end
In the second pressure cap of lower swing nipple tip conductive plug is set and is fixed in upper swivel cougling, electrically conductive socket is arranged and consolidates
It is scheduled in lower swing connector.
Conductive quiet turn changes attachment device using running contact structure, and built-in thrust bearing keeps the rotary system on top logical
It crosses it and switchs to static, even if its following device is not rotated with rotor, while electric power is reached the heating device under pump by cruel trip
Function；Specifically, it includes the conductive copper set gradually from top to bottom in a rotation outer cylinder that conductive quiet turn, which changes attachment device,
Stick, lever mechanism and quiet linkage；Conductive copper rod offers one and the mutually matched axial notch of conductive plug from top surface；Lever
Mechanism includes the spring being arranged in a spring casing and copper conduction lever, and the setting of spring casing is at the top of rotation outer cylinder and leads to
It crosses an insulation rubber mat to separate, copper conduction lever is against on spring and the first pressure cap by being installed in copper conduction lever will
Spring retainer is in spring casing and keeping spring to be in compressive state always；Quiet linkage includes the conductive quiet bar of silvery and opens up
There is the T connector of axially extending bore, T connector is by two rolling bearing being installed on the outside of T connector settings in rotation outer cylinder
Inside；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 into the axially extending bore of T junction, the tubular top of top end opening and the formation grafting of copper conduction lever, and in lever machine
Under the action of structure inner spring, the conductive quiet bar of silvery remains the state of contact with copper conduction lever；Second pressure cap is installed on
It is connected and fixed on the conductive quiet bar of silvery and with the ring-shaped step of rotation outer cylinder.
Electric heater unit includes the electrically heated rod being axially arranged and the conductive plug that is arranged at the top of electrically heated rod；Specifically
Ground, electric heater unit constitute electrical circuit by hollow sucker rod and single-core cable, are additionally provided with an end in the bottom of hollow sucker rod
End loop converter makes electric current collect multiple effect by generating again by the inside of bar body after terminal converter, makes bar and generate
Heat reaches heating effect.
It is above-mentioned first electrically conductive transmission torque sucker rod, hollow screw pump rotor, the second electrically conductive transmission torque sucker rod, anti-sway
Deviation correcting device, conductive quiet turn change the conductive plug being arranged in attachment device and heating device and electrically conductive socket structure and size phase
Together.Specifically, conductive plug includes the first copper rod and the setting thin copper bar on the first copper rod top surface；Electrically conductive socket includes the second bronze medal
Stick is recessed inwardly from the second copper rod bottom surface and offers one for inserting the axial socket of conductive plug；It is opened up from thin copper bar top
There is an axial deep trouth that thin copper bar top is divided into two valves, a waveform reed is provided in axial deep trouth, makes thin copper bar
After being inserted into axial socket, thin copper bar top two-flap type structure expands outwardly under the elastic force effect of reed, with axial socket inner wall
Remain contact condition；Use of a layer thickness between 2~3mm is covered on the outer wall of the first copper rod and the second copper rod
Insulating layer made of polyethersulfone ketone.
It is a kind of to be adopted using what the screw pump oil production device with pump lower heating mechanism according to claim 1 was realized
Oily method, comprises the following specific steps that:
S1, by configured test string by the purpose depth of stratum by oil pipe or drilling rod G.I.H, pass through test
After packer on tubing string is set, formation testing is carried out, complete test, sampling and surveys pressure work；
Wherein, test string, as shown in figure 3, include from bottom to top successively bottom testing tool, formation testing packer,
Formation test tool valve and screw pump stator are connected and are passed through by oil pipe or drilling rod oil pipe between above-mentioned each component or drilling rod prolongs
It extends at well head；Screw pump stator bottom end inner wall is equipped with ring-shaped step for limiting screw pump rotor later period investment in place；
S2, tripping in has the screw pump oil production device tubing string of pump lower heating mechanism in test string, and tubing string passes through more piece
Electrically conductive transmission torque sucker rod extends at well head；Wherein, when the screw pump stator on screw pump rotor bottom end and test string
The limiting stand shoulder grafting of bottom end after touch, shows that screw pump stator and screw pump rotor are installed in place, by heated power cable to adding
Thermal power supply, starts heating device, reduces the viscous crude under pump or high solidifying oil by thermoviscosity, easily flows；Then driving motor
It is powered and screw pump rotation is started by screw pump drive head, mining goes out viscous crude or high solidifying oil in well.
Compared with prior art, this have pump lower heating mechanism screw pump oil production device and its use method to solve with
Toward the problem for being only the upper part heating of pump when viscous crude, high solidifying screwrod pump recover the oil, be especially able to satisfy deep-well deep-layer heavy crude,
Heating, viscosity reducing demand when the solidifying screwrod pump of height recovers the oil.
Detailed description of the invention
Fig. 1 (a) is the top half knot of the screw pump oil production device downhole hardware with pump lower heating mechanism of the invention
Structure schematic diagram；
Fig. 1 (b) is the lower half portion knot of the screw pump oil production device downhole hardware with pump lower heating mechanism of the invention
Structure schematic diagram；
Fig. 2 is the structural schematic diagram of the screw pump oil production device with pump lower heating mechanism of the invention；
Fig. 3 is the connection relationship diagram of test string and screw pump before oil recovery of the invention.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is described further, but following embodiments are absolutely not to this hair
It is bright to have any restrictions.
As shown in Fig. 2, there is the screw pump oil production device of pump lower heating mechanism to be made of above ground portion and underground part for this；
Wherein, above ground portion includes sequentially connected driving motor, screw pump drive head and oil well four-way from top to bottom；Driving motor is logical
Cable is crossed to connect with dedicated control cabinet；
As shown in Fig. 1 (a) and Fig. 1 (b), underground part includes the electrically conductive torsion pass of sequentially connected more piece first from top to bottom
Square sucker rod 7, hollow screw pump rotor 8, the second electrically conductive transmission torque sucker rod 9, anti-sway deviation correcting device 10, conductive quiet turn are changed
Attachment device 11 and heating device 12.
There are two types of structures: electrically conductive biography for first electrically conductive transmission torque sucker rod 7 and the second electrically conductive tool of transmission torque sucker rod 9
Torque sucker rod includes the conduction for being successively set on an inner wall from top to bottom and being covered in the hollow rod of 2~3mm thick dielectric layer
Plug, energization cable and electrically conductive socket, conductive plug and electrically conductive socket are respectively set and are fixed on hollow rod top and bottom
End, and make to be formed between conductive plug and electrically conductive socket by energization cable and be electrically connected；Or including being successively set on from top to bottom
One inner wall is covered with conductive plug, energization cable and conductive plug in the hollow rod of 2~3mm thick dielectric layer, two conductions
Plug is respectively set and is fixed on hollow rod top and bottom end, and makes to be formed between two conductive plugs by energization cable
Electrical connection；.
The joint number of electrically conductive transmission torque sucker rod is adapted at a distance from ground to purpose producing horizon, can by more
The conductive plug and electrically conductive socket of conductive transmission torque sucker rod head and the tail mutually insert and the energy by the way that the two junction is arranged in
The tubular rod collar threaded connection of enough activity disassemblies is fixed as an electrically conductive transmission torque with suitable connection length and takes out
Beam hanger 7 is gone here and there.
Hollow screw pump rotor 8 is to be improved in the structure basis of common screw pump rotor；Specifically, hollow spiral shell
Integrally formed top connection and lower contact is respectively set in 8 top of bar pump rotor and bottom end, and its center offers one for being arranged
The axially extending bore of energization cable；An electrically conductive socket is each provided in top connection and lower contact, two electrically conductive sockets pass through energization
Cable forms electrical connection；8 upper end of hollow screw pump rotor is set to pass through electrically conductive socket and the electrically conductive biography of superposed more piece first
Conductive plug grafting, lower end and the second electrically conductive transmission torque for being located at lower part for the sucker rod string bottom end that torque sucker rod 7 is constituted
The conductive plug grafting on 9 top of sucker rod, and the connection coupling by the way that link position is arranged in takes out the first electrically conductive transmission torque
Sucker rod string, hollow screw pump rotor 8 and the second electrically conductive 9 three of transmission torque sucker rod that beam hanger 7 is constituted are threadedly coupled and fix
And stable electrical connection is formed, guarantee electric power stablizes conveying；
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 is arranged and is fixed on the inside of deviation correction mechanism；Wherein, deviation correction mechanism includes that sequentially connected upper swing from top to bottom connects
Head, cross hollow connector and lower swing connector；Cross hollow connector includes cylindrical body and the edge that a center offers through-hole
Four uniformly distributed and axially vertical with ontology cylindrical hangers of ontology circumferencial direction；Upper swivel cougling and lower swing connector respectively with
One group of hangers on cross hollow connector positioned at opposite side is flexibly connected, and makes swivel cougling and lower swing connector can be with connection
Hangers be axis swing；Power transfer mechanism includes sequentially connected conductive plug, conductive cable and electrically conductive socket from top to bottom；
By being coated on the insulating layer of conductive plug, conductive cable and electrically conductive socket outer wall and being separately positioned on upper swivel cougling bottom end
First pressure cap and the second pressure cap that lower swing nipple tip is arranged in make conductive plug be arranged and be fixed in swivel cougling, lead
Electrical socket is arranged and is fixed in lower swing connector.
It includes the conductive copper rod set gradually from top to bottom in a rotation outer cylinder, lever that conductive quiet turn, which changes attachment device,
Mechanism and quiet linkage；Conductive copper rod offers one and the mutually matched axial notch of conductive plug from top surface；Lever mechanism packet
The spring being arranged in a spring casing and copper conduction lever are included, the setting of spring casing is at the top of rotation outer cylinder and exhausted by one
Edge rubber mat separates, and copper conduction lever is against on spring and the first pressure cap by being installed in copper conduction lever limits spring
In spring casing and spring is kept to be in compressive state always；Quiet linkage includes the conductive quiet bar of silvery and offers axial direction
The T connector of through-hole, T connector is by two rolling bearing being installed on the outside of T connector settings on the inside of rotation outer cylinder；Silver
The conductive quiet bar of system 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
In the axially extending bore of shape connector, the tubular top of top end opening and the formation grafting of copper conduction lever, and the bullet in lever mechanism
Under the action of spring, the conductive quiet bar of silvery remains the state of contact with copper conduction lever；Second pressure cap is installed on silvery and leads
It is connected and fixed on the quiet bar of electricity and with the ring-shaped step of rotation outer cylinder.
Wherein, conductive in the enclosed construction outer layer and silvery of conductive copper rod outer layer, spring casing and the first pressure cap composition
The cylindrical lower portion of quiet bar is coated with insulating layer；Rotation outer cylinder lumen loading has insulated enclosure rouge；Insulating layer is using superelevation point
Sub- polyethylene or high density polyethylene (HDPE) are made；Insulated enclosure rouge main component is silicone oil.Lead between second pressure cap and rotation outer cylinder
It crosses Glais ring and forms sealing.
Heating device constitutes electrical circuit 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 collect multiple effect by generating again by the inside of bar body after terminal converter, makes bar and give birth to
At heat, reach heating effect.
Above-mentioned first electrically conductive transmission torque sucker rod 7, hollow screw pump rotor 8, the second electrically conductive transmission torque sucker rod 9,
Anti-sway deviation correcting device 10, conductive quiet turn change the conductive plug and electrically conductive socket knot being arranged in attachment device 11 and heating device 12
Structure, size are identical；Specifically, conductive plug includes the first copper rod and the setting thin copper bar on the first copper rod top surface；Electrically conductive socket
Including the second copper rod, it is recessed inwardly from the second copper rod bottom surface and offers one for inserting the axial socket of conductive plug；From thin copper
Stick top offers an axial deep trouth that thin copper bar top is divided into two valves, and a waveform spring is provided in axial deep trouth
Piece, after so that thin copper bar is inserted into axial socket, thin copper bar top two-flap type structure expands outwardly under the elastic force effect of reed, with axis
Contact condition is remained to slot inner wall；A layer thickness is covered on the outer wall of the first copper rod and the second copper rod in 2~3mm
Between using insulating layer made of polyethersulfone ketone.
In addition, being respectively provided on the faying face that each component forms contact to guarantee to be tightly connected between each component in device
There is at least one of sealing ring.
A kind of oil production method realized using the above-mentioned screw pump oil production device with pump lower heating mechanism: first will connection
There is the test string G.I.H certain depth of different screw pump stator, completes test, sampling, surveys the work such as pressure；When needing screw rod
When pumping drain, tripping in has the screw pump oil production device underground part of pump lower heating mechanism in test string, and connects and adopt
Oily device above ground portion, control cabinet 16 are connected by the converter of anti-explosion terminal box and output cable and the driving head 14 on well head top
It connects, the terminal organ of cable to bottommost that heated current is sent under pump by cable, hollow stem inside cable is heated；It is logical
Crossing heated power cable, to pass sequentially through the electrically conductive transmission torque sucker rod 7 of more piece first, hollow screw pump rotor 8, second electrically conductive
Transmission torque sucker rod 9, anti-sway deviation correcting device 10 and conductive quiet turn change attachment device 11, and finally power to heater 12, together
Shi Qidong screw pump rotor 8, viscous crude under pumping at this time or high solidifying oil are heated, and viscosity reduces easily flowing, can effectively mining
The solidifying oil of viscous crude height in well out.
Specifically, specific step is as follows for above-mentioned oil production method:
S1, by configured test string by the purpose depth of stratum by 1 G.I.H of oil pipe or drilling rod, pass through test
After packer 4 on tubing string is set, formation testing is carried out, complete test, sampling and surveys pressure work；
Wherein, test string, as shown in figure 3, including successively bottom testing tool 5, formation testing packer from bottom to top
4, formation test tool valve 3 and screw pump stator 2, connected by oil pipe or drilling rod 1 between above-mentioned each component and by oil pipe or
Drilling rod 1 extends at well head；2 bottom end inner wall of screw pump stator is equipped with ring-shaped step for limiting screw pump rotor later period investment
In place；
S2, tripping in has the screw pump oil production device tubing string of pump lower heating mechanism in test string, and tubing string passes through more piece
Electrically conductive transmission torque sucker rod 7 extends at well head；Wherein, when the screw pump on 8 bottom end of screw pump rotor and test string is fixed
The limiting stand shoulder grafting of sub 2 bottom ends after touch, shows that screw pump stator 2 and screw pump rotor 8 are installed in place, passes through heated power cable
It powers to heating device 12, starts heating device 12, reduce the viscous crude under pump or high solidifying oil by thermoviscosity, easily flow；Then
Driving motor, which is powered, starts the rotation of screw pump 2 by screw pump drive head, and mining goes out viscous crude or high solidifying oil in well.
In conclusion the screw pump oil production device with pump lower heating mechanism of the invention, can make cable penetration screw pump
Sleeve rotor, passes through it at the quiet dynamic adaptor substitute device of conduction, anti-sway deviation correcting device and the heating device that work in the connection of its lower end
When passing to power electric, the viscous crude height under pumping coagulates oil and is heated, and reduces its viscosity by easily flowing, improves pump efficiency, solves previous
It is only the problem of the upper part heating of pump when viscous crude, high solidifying screwrod pump recover the oil, is especially able to satisfy deep-well deep-layer heavy crude, height
Heating, viscosity reducing demand when solidifying screwrod pump mining.It is easy to adjust with compact-sized, it is easily controllable, it is the solidifying oil of viscous crude height and sea
The ideal equipment of upper low temperature oil layer exploitation.
Claims (8)
1. a kind of screw pump oil production device with pump lower heating mechanism, which is characterized in that including setting in underground and from upper and
Under the electrically conductive transmission torque sucker rod (7) of sequentially connected more piece first, hollow screw pump rotor (8), the second electrically conductive transmission torque
Sucker rod (9), anti-sway deviation correcting device (10), conductive quiet turn change attachment device (11) and heating device (12), above-mentioned each component
Between by conductive cable connect and be set to each ends conductive plug or electrically conductive socket mutually insert formation be electrically connected,
And the connection coupling by the way that two component junctions are arranged in successively is threadedly coupled fixation；
Anti-sway deviation correcting device (10) includes deviation correction mechanism and power transfer mechanism, and deviation correction mechanism center offers through-hole, and electric power passes
Transfer mechanism is arranged and is fixed on the inside of deviation correction mechanism；Wherein, deviation correction mechanism include from top to bottom sequentially connected upper swivel cougling,
Cross hollow connector and lower swing connector；Cross hollow connector includes that a center offers the cylindrical body of through-hole and along ontology
Four uniformly distributed and axially vertical with ontology cylindrical hangers of circumferencial direction；Upper swivel cougling and lower swing connector respectively with cross
One group of hangers on hollow connector positioned at opposite side is flexibly connected, and makes swivel cougling and lower swing connector can be with the extension of connection
Ear is axis swing；Power transfer mechanism includes sequentially connected conductive plug, conductive cable and electrically conductive socket from top to bottom；Pass through
Be coated on conductive plug, conductive cable and electrically conductive socket outer wall insulating layer and be separately positioned on the first of swivel cougling bottom end
Pressure cap and the second pressure cap that lower swing nipple tip is arranged in make conductive plug be arranged and be fixed in swivel cougling, and conduction is inserted
Seat is arranged and is fixed in lower swing connector.
2. the screw pump oil production device with pump lower heating mechanism according to claim 1, which is characterized in that further include setting
Set on the ground and from top to bottom sequentially connected driving motor (13), screw pump drive head (14) and oil well four-way (15)；It drives
Dynamic motor (13) are connect by cable with dedicated control cabinet.
3. the screw pump oil production device with pump lower heating mechanism according to claim 1, which is characterized in that electrically conductive biography
Torque sucker rod includes the conduction for being successively set on an inner wall from top to bottom and being covered in the hollow rod of 2~3mm thick dielectric layer
Plug, energization cable and electrically conductive socket, conductive plug and electrically conductive socket are respectively set and are fixed on hollow rod top and bottom
End, and make to be formed between conductive plug and electrically conductive socket by energization cable and be electrically connected；Or including being successively set on from top to bottom
One inner wall is covered with conductive plug, energization cable and conductive plug in the hollow rod of 2~3mm thick dielectric layer, two conductions
Plug is respectively set and is fixed on hollow rod top and bottom end, and makes to be formed between two conductive plugs by energization cable
Electrical connection.
4. the screw pump oil production device with pump lower heating mechanism according to claim 3, which is characterized in that hollow screw rod
Pump rotor (8) include center offer the rotor body of axially extending bore and be arranged in rotor body top and bottom end top connection and
An electrically conductive socket is provided in lower contact, top connection and lower contact, two electrically conductive sockets are by setting in rotor body axial direction
Conductive cable in through-hole forms electrical connection.
5. the screw pump oil production device with pump lower heating mechanism according to claim 1, which is characterized in that conductive quiet dynamic
Conversion attachment device (11) includes conductive copper rod, lever mechanism and the quiet bar machine set gradually from top to bottom in a rotation outer cylinder
Structure；Conductive copper rod offers one and the mutually matched axial notch of conductive plug from top surface；Lever mechanism includes being arranged in a bullet
Spring and copper conduction lever in spring casing, the setting of spring casing separate at the top of rotation outer cylinder and through an insulation rubber mat,
Copper conduction lever is against on spring and the first pressure cap by being installed in copper conduction lever protects spring retainer in spring
In cylinder and spring is kept to be in compressive state always；Quiet linkage includes the conductive quiet bar of silvery and the T-type for offering axially extending bore
Connector, T connector is by two rolling bearing being installed on the outside of T connector settings on the inside of rotation outer cylinder；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
In axially extending bore, the tubular top of top end opening and the formation grafting of copper conduction lever, and in the effect of lever mechanism inner spring
Under, the conductive quiet bar of silvery remains the state of contact with copper conduction lever；Second pressure cap is installed on the conductive quiet bar of silvery
And it is connected and fixed with the ring-shaped step of rotation outer cylinder.
6. the screw pump oil production device with pump lower heating mechanism according to claim 1, which is characterized in that heating device
(12) conductive plug for including the electrically heated rod being axially arranged and being arranged at the top of electrically heated rod.
7. according to the described in any item screw pump oil production devices with pump lower heating mechanism of claim 3~6, feature exists
In conductive plug includes the first copper rod and the setting thin copper bar on the first copper rod top surface；Electrically conductive socket includes the second copper rod, from the
Two copper rod bottom surfaces, which are recessed inwardly, offers one for inserting the axial socket of conductive plug；Offering one from thin copper bar top will be thin
Copper rod top is divided into the axial deep trouth of two valves, and a waveform reed is provided in axial deep trouth, keeps thin copper bar insertion axial
After slot, thin copper bar top two-flap type structure expands outwardly under the elastic force effect of reed, remains with axial socket inner wall
Contact condition；It is covered with a layer thickness on the outer wall of the first copper rod and the second copper rod and uses polyethersulfone ketone between 2~3mm
Manufactured insulating layer.
8. a kind of oil recovery realized using the screw pump oil production device with pump lower heating mechanism according to claim 1
Method, which is characterized in that comprise the following specific steps that:
S1, by configured test string by the purpose depth of stratum by oil pipe or drilling rod (1) G.I.H, pass through testing tube
After packer (4) on column is set, formation testing is carried out, complete test, sampling and surveys pressure work；
Wherein, test string includes successively bottom testing tool (5), formation testing packer (4), formation testing work from bottom to top
Have valve (3) and screw pump stator (2), is connected between above-mentioned each component by oil pipe or drilling rod (1) and pass through oil pipe or drilling rod (1)
It extends at well head；Screw pump stator (2) bottom end inner wall is equipped with ring-shaped step and puts into for limiting the screw pump rotor later period
Position；
S2, tripping in has the screw pump oil production device tubing string of pump lower heating mechanism in test string, and tubing string can be led by more piece
Fax torque sucker rod (7) extends at well head；Wherein, when the screw pump on screw pump rotor (8) bottom end and test string is fixed
The limiting stand shoulder grafting of sub (2) bottom end after touch, shows that screw pump stator (2) and screw pump rotor (8) are installed in place, dynamic by heating
Power cable is powered to heating device (12), is started heating device (12), reduces the viscous crude under pump or high solidifying oil by thermoviscosity, easily
Flowing；Then driving motor is powered through screw pump drive head starting screw pump (2) rotation, and mining goes out viscous crude or Gao Ning in well
Oil.
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| CN106639898B (en) * | 2017-01-04 | 2019-05-24 | 北京赛诺凤凰能源科技有限公司 | It is a kind of to cross line helicoid hydraulic motor |
| CN107187755A (en) * | 2017-07-04 | 2017-09-22 | 山东普利龙压力容器有限公司 | Discrete device and oil tank of train discharge integrating device |
| CN109611343B (en) * | 2018-09-25 | 2020-12-11 | 合肥凯石投资咨询有限公司 | Multistage permanent magnet brushless motor water pump |
| CN111379556A (en) * | 2018-12-27 | 2020-07-07 | 中国石油天然气股份有限公司 | Method and device for judging fault type of screw pump well |
| CN112652930B (en) * | 2020-11-30 | 2022-05-24 | 中国石油天然气集团有限公司 | Contact type wire passing motor conversion offset assembly and electric signal transmission method |
| CN113853036B (en) * | 2021-09-24 | 2022-05-24 | 二重（德阳）重型装备有限公司 | Pyrolysis equipment rotor electrical heating structure |
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