CN106150392A - Can conduct electricity transmission torque sucker rod - Google Patents
Can conduct electricity transmission torque sucker rod Download PDFInfo
- Publication number
- CN106150392A CN106150392A CN201610753133.5A CN201610753133A CN106150392A CN 106150392 A CN106150392 A CN 106150392A CN 201610753133 A CN201610753133 A CN 201610753133A CN 106150392 A CN106150392 A CN 106150392A
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- CN
- China
- Prior art keywords
- sucker rod
- conductive
- rod
- copper bar
- insulating layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 26
- 230000005611 electricity Effects 0.000 title abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 55
- 229910052802 copper Inorganic materials 0.000 claims abstract description 55
- 239000010949 copper Substances 0.000 claims abstract description 55
- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 6
- 230000008878 coupling Effects 0.000 claims description 17
- 238000010168 coupling process Methods 0.000 claims description 17
- 238000005859 coupling reaction Methods 0.000 claims description 17
- 239000004695 Polyether sulfone Substances 0.000 claims description 4
- 150000002576 ketones Chemical class 0.000 claims description 4
- 229920006393 polyether sulfone Polymers 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract description 13
- 230000004888 barrier function Effects 0.000 abstract 1
- 238000009833 condensation Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 241001226615 Asphodelus albus Species 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/003—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings with electrically conducting or insulating means
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a kind of transmission torque sucker rod that conducts electricity include hollow rod and be respectively arranged at its top and bottom the conductive plug connected by cable and electrically conductive socket；Conductive plug includes the first copper rod and the thin copper bar being arranged on copper rod end face, and thin copper bar offers axial deep trouth from end face and becomes two flap-type structures, is provided with a waveform reed in axial deep trouth；Electrically conductive socket includes that the second copper rod and caving inward from the second copper rod bottom surface offers one for the axial socket of plug-in mounting thin copper bar；Insulating barrier it is provided with between hollow rod and conductive structure；This can conduct electricity transmission torque sucker rod and overcome existing drawback, it is possible to meet deep-well deep-layer heavy crude, high solidifying screwrod pump when recovering the oil heating, viscosity reducing conduction moment of torsion and simultaneously heater transmit electric power demand, particularly can provide condition for pump electrical heating can be got over.
Description
Technical Field
The invention relates to the technical field of oil and gas field development, in particular to a conductive transmission torque sucker rod device.
Background
At present, in the liquid drainage and oil extraction process of a high-condensation high-viscosity thick oil well, a screw pump is generally adopted, and meanwhile, in order to increase the pump efficiency, thick oil, high-condensation oil and offshore low-temperature oil flowing into a shaft need to be heated so as to reduce the viscosity, prevent wax deposition and facilitate flowing. The screw pump drive needs the sucker rod to transmit torque, the flow of high-condensation high-viscosity oil in a shaft needs heating, the common method is to adopt a hollow sucker rod to circulate hot oil and hot water to achieve the purposes of transmitting torque and heating to reduce viscosity, the other method is to adopt a cable laid outside a screw pump tubular column to electrify and heat an underground electric heater, but the two methods can only heat the part above the screw pump, and the part below the pump can not be electrically heated due to factors such as rotation, and particularly in a deep well, the screw pump can not be laid at an oil layer part or at a deeper depth in the shaft due to the reasons such as lift, power limitation, and the like, so that the high-condensation oil of the thick oil is difficult to enter the pump, and the pump efficiency is low.
The prior screw pump oil production liquid discharge heating device has the patent technologies:
screw pump oil recovery electric heater unit, patent number: 200820123813.X discloses a screw pump oil production heating method, and the heating mode adopts the mode that a heating cable is filled in a hollow sucker rod and only can heat the part on the pump.
An oil layer electric heating oil extraction device and a using method thereof are disclosed in patent No. 201410098385.X, and the heating mode is that a plurality of steel armored heating cables and the like are tightly adhered and fixed on the outer wall surface of an oil pipe through a plurality of cable clamps. The cable is laid on the outer wall of the oil pipe and directly contacts with the sleeve, so that the cable is easy to collide, break and fall off. To this end, it is necessary to design an electrically conductive torque transmitting sucker rod device that integrates electrical conduction with torque transmission.
Disclosure of Invention
The invention aims to provide an electricity-conducting torque-reducing sucker rod device which is capable of conducting electricity and torque when a high-condensation high-viscosity oil layer and a low-temperature oil layer need to transmit electric power to a bottom layer heating viscosity-reducing device during liquid drainage of a screw pump.
Therefore, the technical scheme of the invention is as follows:
a conductive transmission torque sucker rod device comprises a conductive plug, a power-on cable and a conductive socket which are sequentially arranged in a hollow sucker rod from top to bottom; wherein,
a first insulating layer is coated on the inner wall of the hollow sucker rod; the conductive plug and the conductive socket are respectively arranged and fixed at the top end and the bottom end of the hollow sucker rod, and the conductive plug and the conductive socket are electrically connected through the electrified cable;
the conductive plug comprises a first copper bar and a thin copper bar arranged on the top surface of the first copper bar; the outer wall of the first copper bar is coated with a second insulating layer;
the conductive socket comprises a second copper bar and a third insulating layer coated on the outer wall of the second copper bar, and an axial slot for inserting a conductive plug is formed in the inward concave position of the bottom surface of the second copper bar;
and after the thin copper rod is inserted into the axial slot, the two-petal structure at the upper part of the thin copper rod expands outwards under the elastic force of the reed and is always in contact with the inner wall of the axial slot.
Wherein, the copper rod (including the first copper rod, the second copper rod and the thin copper rod) for electric conduction in the device can be replaced by a silver rod; however, from the viewpoint of cost and power transmission efficiency, a copper rod is preferably used as the copper.
Furthermore, the top end and the bottom end of the hollow sucker rod are respectively connected with a sucker rod coupling which can be movably disassembled; the sucker rod coupling is cylindrical, and the inner wall of the sucker rod coupling is provided with connecting internal threads, so that the hollow sucker rod is fixedly connected with the upper connecting piece or the lower connecting piece through threads.
Furthermore, the inner walls of the top end and the bottom end of the sucker rod coupling are respectively provided with an annular groove provided with a sealing ring.
Furthermore, the first insulating layer, the second insulating layer and the third insulating layer are made of polyether sulfone ketone, and the thickness of the first insulating layer, the second insulating layer and the third insulating layer is 2-3 mm.
Because this but electric conduction transmission moment of torsion sucker rod device carries out the scheme improvement for utilizing current hollow sucker rod, therefore when using, the size of hollow sucker rod is selected according to the discharge capacity of pump and the volume of required transmission moment of torsion, and the size of the other parts of setting in sucker rod body carries out the adjustment of adaptability according to the size of hollow sucker rod, guarantees the normal transmission of moment of torsion when electric power conduction.
In addition, because the length required for the electrically conductive torque-transmitting sucker rod device to be lowered into the well depends on the specific downhole condition, a plurality of electrically conductive torque-transmitting sucker rod devices can be connected with each other through the head-to-tail electrically conductive plugs and the electrically conductive sockets and adjusted to be in a proper connection length. Meanwhile, the conductive transmission torque sucker rod device is an auxiliary mechanism for transmitting torque and electric power from top to bottom, and can also be deformed into similar structures according to needs, such as a conductive transmission torque sucker rod device, which comprises a first conductive plug, a power-on cable and a second conductive plug which are sequentially arranged in a hollow sucker rod from top to bottom. The structure or the conductive transmission torque sucker rod device comprises a first conductive socket, a power-on cable and a second conductive socket which are sequentially arranged in a hollow sucker rod from top to bottom; of course, there are only variations in the way the above-described components are recombined, and in fact the specific structure of the components is not changed.
Compared with the prior art, the conductive transmission torque sucker rod device solves the problem that the prior pump can only partially heat electricity when a thick oil and high-pour-point oil screw pump extracts and discharges liquid, overcomes the defects that the cable is laid on the outer wall of an oil pipe and is easy to collide, break, lose and lose efficacy and the like, forms the conductive transmission torque sucker rod with moderate and adjustable length through the special design of a conductive plug, a conductive plug and a conductive mode, meets the requirements of heating, viscosity reduction and transmission torque and simultaneously conveying electric power by a heater when a deep-well deep thick oil and high-pour-point oil screw pump extracts oil, and particularly provides conditions for over-pumping electric heating.
Drawings
FIG. 1 is a schematic structural view of an electrically conductive torque transmitting sucker rod apparatus of the present invention;
FIG. 2 is a schematic diagram of the electrically conductive plug of the electrically conductive torque-transmitting sucker rod apparatus of the present invention;
FIG. 3 is a schematic diagram of the electrically conductive socket of the electrically conductive torque-transmitting sucker rod apparatus of the present invention.
Detailed Description
The invention will be further described with reference to the following figures and specific examples, which are not intended to limit the invention in any way.
As shown in figure 1, the conductive transmission torque sucker rod device comprises a conductive plug, a power-on cable 8 and a conductive socket which are arranged in a hollow sucker rod 11 from top to bottom in sequence; wherein,
the inner wall of the hollow sucker rod 11 is covered with a first insulating layer 7;
the conductive plug and the conductive socket are respectively arranged at the top end and the bottom end of the hollow sucker rod 11, the electrified cable 8 is vertically arranged in the sucker rod 11, the top end of the electrified cable is fixedly welded with the bottom surface of the conductive plug, and the bottom end of the electrified cable is fixedly welded with the top surface of the conductive socket, so that the conductive plug and the conductive socket are electrically connected; the length of the electrified cable 8 is slightly longer than the distance from the bottom surface of the conductive plug to the top surface of the conductive socket;
as shown in fig. 2, the conductive plug comprises a cylindrical first copper rod 4 and a thin copper rod 2 arranged on the top surface of the cylindrical first copper rod 4, and the outer wall of the cylindrical first copper rod 4 is coated with a second insulating layer 6; the outer diameter of the cylindrical first copper rod 4 coated with the second insulating layer 6 is adapted to the inner diameter of the hollow sucker rod 11 coated with the first insulating layer 7, so that the conductive plug is extruded, sleeved and fixed on the top end of the inner side of the hollow sucker rod 11;
as shown in fig. 3, the conductive socket includes a cylindrical second copper bar 9 and a third insulating layer 12 coated on the outer wall of the cylindrical second copper bar 9, and an axial slot 10 for inserting the conductive plug is formed in the bottom surface of the cylindrical second copper bar 9; the outer diameter of the cylindrical second copper rod 9 coated with the third insulating layer 12 is matched with the inner diameter of the hollow sucker rod 11 coated with the first insulating layer 7, so that the conductive socket is extruded, sleeved and fixed at the bottom end of the inner side of the hollow sucker rod 11;
the thin copper rod 2 is fixed at the center of the top surface of the first copper rod through metal fusion welding, an axial deep groove for dividing the thin copper rod into two sections is formed in the top end of the thin copper rod, and the axial deep groove is almost close to the bottom surface of the thin copper rod; the size of the axial slot 10 is adapted to the size of the thin copper rod 2; a wave-shaped reed 3 is arranged in the axial deep groove, so that after the thin copper rod is inserted into the corresponding conductive socket, namely the axial slot 10, the two-petal structure is outwards unfolded to the maximum extent under the elastic force action of the reed 3 and is always kept in a contact state with the inner wall of the axial slot (10) of the conductive socket;
the first insulating layer 7, the second insulating layer 6 and the third insulating layer 12 are made of polyethersulfone ketone with temperature resistance up to 250 ℃, and the thickness of the polyethersulfone ketone is 2-3 mm; the arrangement of the insulating layer enables the conductive part to be insulated from the sucker rod 11, and simultaneously ensures that the conductive power of the conductive torque sucker rod device can resist 1000V peak voltage and 150I working current;
wherein, the top surface of the first copper bar is flush with the top surface of the hollow sucker rod 11, so that the thin copper bar 2 is exposed outside the hollow sucker rod 11; the bottom surface of the second copper bar 9 is flush with the bottom surface of the hollow sucker rod 11;
in order to avoid the damage of the thin copper rod 2 exposed outside the hollow sucker rod 11, the top end and the bottom end of the hollow sucker rod 11 are respectively provided with a sucker rod coupling 1 which can be movably disassembled; specifically, the sucker rod coupling 1 is a hollow cylindrical structure with internal threads on the inner wall, and the length of the sucker rod coupling is greater than that of the thin copper rod 2;
connecting external threads matched with the connecting internal threads on the inner wall of the sucker rod coupling 1 are arranged on the outer walls of the top end and the bottom end of the hollow sucker rod 11, meanwhile, annular bosses for shape inlet limiting of the sucker rod coupling 1 are respectively processed on the outer walls adjacent to the top end and the bottom end of the hollow sucker rod 11, so that the sucker rod coupling 1 is locally fixed at the top end and the bottom end of the hollow sucker rod 11 in a threaded connection manner, the thin copper rod 2 is ensured to be always positioned in the sucker rod coupling 1 when the conductive transmission torque sucker rod device is in an unconnected installation state, and the conductive plug part is effectively prevented from being damaged;
the inner walls of the top end and the bottom end of the sucker rod coupling 1 are respectively provided with an annular groove provided with a sealing ring 5, so that when the conductive transmission torque sucker rod device is fixedly connected with the upper connecting piece and the lower connecting piece through the sucker rod coupling 1, the connecting parts form sealing connection.
The conductive plug and the conductive socket in the conductive transmission torque sucker rod device are designed into a pair of special structures, so that the purpose of electric connection among components is realized; meanwhile, the conductive plugs and the conductive sockets are respectively arranged at the two ends of the device, so that a combined pair is formed between the conductive plugs and the conductive sockets, namely when the conductive plugs and the conductive sockets are applied, the conductive plugs and the conductive sockets can be sequentially connected end to end through a plurality of conductive torque transmission sucker rod devices, meanwhile, the conductive plugs and the conductive sockets at the end and the end are mutually connected to realize electric connection and carry out adaptive adjustment on the length of the sucker rod device which is put into the well, and the conductive plugs and the conductive sockets can also be connected with other functional components by improving the connection parts of the other; finally, the torque power generated by the screw pump driving head arranged on the ground is transmitted to the special screw pump to drive liquid drainage production, and meanwhile, the electric power is transmitted to a heating device in a shaft or under the pump by a cable in the special screw pump.
Claims (4)
1. A conductive transmission torque sucker rod device is characterized by comprising a conductive plug, a power-on cable (8) and a conductive socket which are sequentially arranged in a hollow sucker rod (11) from top to bottom; wherein,
a first insulating layer (7) is coated on the inner wall of the hollow sucker rod (11); the conductive plug and the conductive socket are respectively arranged and fixed at the top end and the bottom end of the hollow sucker rod (11), and the conductive plug and the conductive socket are electrically connected through the electrified cable (8);
the conductive plug comprises a first copper bar (4) and a thin copper bar (2) arranged on the top surface of the first copper bar (4); the outer wall of the first copper bar (4) is coated with a second insulating layer (6);
the conductive socket comprises a second copper bar (9) and a third insulating layer (12) coated on the outer wall of the second copper bar (9), and an axial slot (10) for inserting a conductive plug is formed in the inward concave position of the bottom surface of the second copper bar (9);
an axial deep groove is formed in the top end of the thin copper rod, the upper portion of the thin copper rod is divided into two sections, a wavy reed (3) is arranged in the axial deep groove, and after the thin copper rod is inserted into the axial slot (10), the two-section type structure on the upper portion of the thin copper rod expands outwards under the elastic force of the reed (3) and is always in contact with the inner wall of the axial slot (10).
2. The electrically conductive torque transmission sucker rod device of claim 1, wherein a detachable sucker rod coupling (1) is connected to the top end and the bottom end of the hollow sucker rod (11); the sucker rod coupling (1) is cylindrical, and the inner wall of the sucker rod coupling is provided with connecting internal threads, so that the hollow sucker rod (11) is fixedly connected with the upper connecting piece or the lower connecting piece through the threads.
3. The electrically conductive torque transmission sucker rod device of claim 2, wherein the sucker rod coupling (1) is provided with an annular groove for arranging the sealing ring (5) on the inner wall of the top end and the inner wall of the bottom end.
4. The electrically conductive torque transmission sucker rod device according to claim 1, characterized in that the first insulating layer (7), the second insulating layer (6) and the third insulating layer (12) are made of polyethersulfone ketone and have a thickness of 2-3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610753133.5A CN106150392A (en) | 2016-08-29 | 2016-08-29 | Can conduct electricity transmission torque sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610753133.5A CN106150392A (en) | 2016-08-29 | 2016-08-29 | Can conduct electricity transmission torque sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106150392A true CN106150392A (en) | 2016-11-23 |
Family
ID=57345060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610753133.5A Pending CN106150392A (en) | 2016-08-29 | 2016-08-29 | Can conduct electricity transmission torque sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106150392A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112054635A (en) * | 2020-08-28 | 2020-12-08 | 王照雨 | AC asynchronous stepless speed regulating motor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4205926A (en) * | 1977-08-15 | 1980-06-03 | Carlson Drexel T | Sucker rod and coupling therefor |
| CN2099833U (en) * | 1991-07-19 | 1992-03-25 | 宋金城 | Integral type electrothermal oil pumping rod column |
| CN2168377Y (en) * | 1993-07-14 | 1994-06-08 | 梁长青 | Combined skin-effect electrothermal device |
| CN2176429Y (en) * | 1993-10-19 | 1994-09-07 | 赵河 | Heater of oil well pump |
| CN101220740A (en) * | 2008-01-25 | 2008-07-16 | 朱成林 | Electric heating apparatus of hollow sucker rod |
| CN205955658U (en) * | 2016-08-29 | 2017-02-15 | 王国良 | Can electrically conduct and pass moment of torsion sucker rod device |
-
2016
- 2016-08-29 CN CN201610753133.5A patent/CN106150392A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4205926A (en) * | 1977-08-15 | 1980-06-03 | Carlson Drexel T | Sucker rod and coupling therefor |
| CN2099833U (en) * | 1991-07-19 | 1992-03-25 | 宋金城 | Integral type electrothermal oil pumping rod column |
| CN2168377Y (en) * | 1993-07-14 | 1994-06-08 | 梁长青 | Combined skin-effect electrothermal device |
| CN2176429Y (en) * | 1993-10-19 | 1994-09-07 | 赵河 | Heater of oil well pump |
| CN101220740A (en) * | 2008-01-25 | 2008-07-16 | 朱成林 | Electric heating apparatus of hollow sucker rod |
| CN205955658U (en) * | 2016-08-29 | 2017-02-15 | 王国良 | Can electrically conduct and pass moment of torsion sucker rod device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112054635A (en) * | 2020-08-28 | 2020-12-08 | 王照雨 | AC asynchronous stepless speed regulating motor |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161123 |