CN112112578A - Hollow sucker rod of anti-deflection - Google Patents
Hollow sucker rod of anti-deflection Download PDFInfo
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- CN112112578A CN112112578A CN202011318159.XA CN202011318159A CN112112578A CN 112112578 A CN112112578 A CN 112112578A CN 202011318159 A CN202011318159 A CN 202011318159A CN 112112578 A CN112112578 A CN 112112578A
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 32
- 239000007787 solid Substances 0.000 claims abstract description 20
- 239000003129 oil well Substances 0.000 claims abstract description 6
- 239000003814 drug Substances 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 4
- 238000000605 extraction Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000013043 chemical agent Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000012377 drug delivery Methods 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- 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
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- 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
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/005—Heater surrounding production tube
-
- 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
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/006—Combined heating and pumping means
-
- 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
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/04—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones using electrical heaters
-
- 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
- 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a deflection-preventing hollow sucker rod which comprises a solid pipe and a plurality of hollow pipes, wherein the hollow pipes are sequentially connected through a connecting structure, the solid pipe is connected with the hollow pipe at the tail end, and an oil well pump is connected below the solid pipe; the connecting structure comprises a circumferential block, the outer surface of the circumferential block is provided with an upper thread and a lower thread, and the inner surfaces of the two side ends of the hollow pipe are provided with threads; the connecting structure further comprises a peripheral plate, the peripheral plate is arranged between the two hollow pipes which are connected, grooves are formed in two end portions of each hollow pipe, the grooves of the two hollow pipes which are connected are communicated, and the peripheral plate is arranged in the two communicated grooves. Compared with the traditional hollow sucker rod, the hollow sucker rod has the advantages that the overall quality of the hollow sucker rod is improved by the connecting structure, so that the hollow sucker rod cannot be driven to deflect by oil pressure.
Description
Technical Field
The invention relates to the technical field of hollow sucker rods, in particular to an anti-deflection hollow sucker rod.
Background
When oil extraction equipment is used for pumping oil, the produced oil is viscous or contains more impurities, so that the oil is adhered to the wall of the oil cylinder in the process of rising in the oil cylinder, and further the production efficiency and the equipment safety are influenced.
In the prior art, wall oil is adhered to the wall of an oil cylinder in a hollow sucker rod mode, and specifically, the adhesion of the oil is reduced by adding chemical agents into a hollow pipe or heating the hollow sucker rod.
However, in the process of using, the hollow sucker rod is lighter in weight compared with the solid structure due to the hollow structure, and may deflect along with the oil pressure pump under the action of oil pressure in the oil extraction process, thereby resulting in the poor oil extraction effect.
Disclosure of Invention
The invention aims to provide a hollow sucker rod capable of preventing deflection so as to solve the problems of the prior art, which are proposed in the background art and can cause deflection.
In order to achieve the purpose, the invention provides the following technical scheme:
a deflection-preventing hollow sucker rod comprises a solid pipe and a plurality of hollow pipes, wherein the hollow pipes are sequentially connected through a connecting structure, the solid pipe is connected with the hollow pipe at the tail end, and an oil well pump is connected below the solid pipe;
the connecting structure comprises a circumferential block, the outer surface of the circumferential block is provided with an upper thread and a lower thread, the inner surfaces of the two side ends of the hollow pipes are provided with threads, one thread of the two connected hollow pipes is connected with the upper thread, and the other thread of the two connected hollow pipes is connected with the lower thread;
the connecting structure further comprises a peripheral plate, the peripheral plate is arranged between the two hollow pipes which are connected, grooves are formed in two end portions of each hollow pipe, the grooves of the two hollow pipes which are connected are communicated, and the peripheral plate is arranged in the two communicated grooves.
Advantageously or exemplarily, the peripheral plate is of a thermally expansive material and is configured to: when the hollow sucker rod pumps oil in the oil cylinder environment, the inner diameter of the peripheral plate is smaller than the outer diameter of the groove of the hollow pipe in the temperature environment of the oil cylinder.
Advantageously or exemplarily, the connecting structure further comprises an inner tube, a plurality of the circumferential blocks are arranged on the inner tube at equal intervals, and a through hole penetrating along the tube direction of the inner tube is arranged in the inner tube; the inner pipe is inserted into the hollow areas of a plurality of hollow pipes which are connected in sequence.
Advantageously or exemplarily, further comprises a power supply, a positive cable connected to the positive pole of the power supply, and a negative cable connected to the negative pole of the power supply, the positive cable and the negative cable extending downwards along the tube of the inner tube,
the positive cable is provided with a positive branch cable at a position corresponding to the circumferential block, and the positive branch cable is electrically connected with the hollow pipe above the circumferential block;
and the negative cable is provided with a negative branch cable at the position corresponding to the circumferential block, and the negative branch cable is electrically connected with the hollow pipe below the circumferential block.
Advantageously or exemplarily, the top of said inner tube corresponds to the top of the first hollow tube and the bottom of said inner tube corresponds to the bottom of the last hollow tube; a negative branch cable is arranged at the position, close to the top, of the inner pipe, and the negative branch cable is connected between the top of the first hollow pipe and the negative cable; and a positive branch cable is arranged at the position of the inner tube close to the bottom of the inner tube and is connected between the bottom of the last hollow tube and the positive cable.
Beneficially or exemplarily, the inner tube is provided with a top cover corresponding to the negative branch cable near the top, the negative branch cable is routed along the top cover and is connected to the negative cable, the outer diameter of the top cover exceeds the outer diameter of the hollow tube, and the top cover is provided with a mounting structure for mounting to an oil cylinder; the positive branch cable of the inner tube, which is close to the bottom, is provided with a bottom cover, and the positive branch cable is wired along the bottom cover and branches from the positive cable to extend to the last hollow tube.
Advantageously or exemplarily, the inner tube is provided with a through hole in the vertical direction, and a one-way valve is arranged between the hollow tube and the solid tube.
Advantageously or exemplarily, the one-way valve comprises an inlet channel connected with the through hole, and an inclined movable door is rotatably connected to the end of the inlet channel and abuts against the inlet channel to block the inlet channel; a medicine supply channel obliquely extending to the outer wall of the one-way valve is arranged below the movable door, a spring is arranged at the rotating joint of the movable door and the tail end of the inlet channel, and the spring is configured as follows: when the movable door blocks the medicament from falling from the through hole, the spring is twisted.
Advantageously or exemplarily, a rectangular horizontal platform is arranged in the middle of the end of the inlet channel, four movable doors are arranged and are respectively and rotatably connected to four side surfaces of the rectangular horizontal platform, and the movable doors are matched with each other to block the inlet channel; each horizontal platform is correspondingly provided with a medicine supply channel.
Compared with the prior art, the invention has the beneficial effects that:
compared with the traditional hollow sucker rod, the hollow sucker rod has the advantages that the overall quality of the hollow sucker rod is improved by the connecting structure, so that the hollow sucker rod cannot be driven to deflect by oil pressure.
In addition, when one of them section receives the effect of oil, takes place to damage or the adhesion condition is comparatively serious, can select to dismantle before next oil recovery and change this section, need not to change sucker rod whole, and cost of maintenance is low.
Drawings
FIG. 1 is a cross-sectional view of a hollow sucker rod of the present invention with the purpose of preventing deflection.
FIG. 2 is a schematic view of a deflection protected hollow sucker rod of the present invention assembled within an oil cylinder.
FIG. 3 is a sectional view taken along the line A-A in FIG. 1 of a hollow sucker rod with deflection prevention according to the present invention.
FIG. 4 is a schematic diagram of the routing of an anti-deflection hollow sucker rod according to the present invention.
In the figure:
1-a solid tube;
2-hollow pipe; 21-a groove;
3-a linking structure; 31-an inner tube; 32-a circumferential block; 33-peripheral plate; 34-a through hole; 35-a top cover; 36-a bottom cover;
4-oil well pump;
5-positive cable; 51-positive branch cable;
6-a negative cable; 61-negative branch cable;
7-a one-way valve; 71-an inlet channel; 72-a movable door; 73-a drug delivery channel; 74-horizontal table;
8-oil cylinder.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a deflection-preventing hollow sucker rod comprises a solid pipe 1 and a plurality of hollow pipes 2, wherein the hollow pipes 2 are sequentially connected through a connecting structure 3, the solid pipe 1 is connected with the hollow pipe 2 at the tail end, and an oil well pump 4 is connected below the solid pipe 1; the connecting structure 3 comprises a circumferential block 32, the outer surface of the circumferential block 32 is provided with an upper thread and a lower thread, the inner surfaces of the two side ends of the hollow pipes 2 are provided with threads, one of the two connected hollow pipes 2 is connected with the upper thread at one side end of the hollow pipe 2, and the other one of the two connected hollow pipes 2 is connected with the lower thread at the other side end of the hollow pipe 2; the connecting structure 3 further comprises a peripheral plate 33, the peripheral plate 33 is arranged between the two hollow pipes 2 which are connected, the two ends of each hollow pipe 2 are provided with grooves 21, the grooves 21 of the two hollow pipes 2 which are connected are communicated, and the peripheral plate 33 is arranged in the two communicated grooves 21.
The hollow sucker rod of the embodiment comprises a solid pipe 1 and a plurality of hollow pipes 2, wherein the hollow pipes 2 are connected through a connecting structure 3, specifically, when the hollow sucker rod of the embodiment is installed, one hollow pipe 2 is firstly screwed into an upper thread of one end of a circumferential block 32, then the other hollow pipe 2 is screwed into a lower thread of the other end of the circumferential block 32, and the steps are repeated until all the hollow pipes 2 are connected into a whole.
Then, the solid tube 1 is connected to the hollow tube 2 at the tail end, and the oil pump 4 is assembled below the solid tube 1.
When oil extraction, the hollow sucker rod of this embodiment is installed on oil extraction equipment, and then, hollow sucker rod is transferred and is got into oil cylinder 8, and oil-well pump 4 in the hollow sucker rod works, takes out the oil below oil cylinder 8. In the process of pumping oil, oil is gradually lifted upwards from the area between the outer wall of the hollow sucker rod and the inner wall of the oil cylinder 8, the height of the oil surface is higher and higher until the oil surface rises to the outlet of the oil cylinder 8, and the oil is collected and collected at the outlet of the oil cylinder 8.
Compared with the traditional hollow sucker rod, the hollow sucker rod has the advantages that the connecting structure 3 improves the overall quality of the hollow sucker rod, and the hollow sucker rod cannot be driven to deflect by oil pressure.
In addition, when one of them section receives the effect of oil, takes place to damage or the adhesion condition is comparatively serious, can select to dismantle before next oil recovery and change this section, need not to change sucker rod whole, and this embodiment can also realize that cost of maintenance is low.
In the present embodiment, after the circumferential blocks 32 are screwed, there may be a gap between the end surfaces of the hollow pipes 2, so that the present embodiment is further provided with the peripheral plate 33, after the hollow pipes 2 are connected into a whole, the peripheral plate 33 is provided at the periphery between the hollow pipes 2, and the gap that may exist is eliminated by the cooperation of the peripheral plate 33 and the groove 21. Meanwhile, due to the close fit between the peripheral plate 33 and the groove 21, oil cannot pass between the peripheral plate 33 and the groove 21 even if it penetrates between the peripheral plate 33 and the groove wall of the groove 21, so that the sealing performance of the present embodiment is good.
In one embodiment, there is provided an embodiment of the peripheral plate 33 and the recess 21, wherein the peripheral plate 33 is made of a heat expandable material and is configured to: when the hollow sucker rod pumps oil in the environment of the oil cylinder 8, the inner diameter of the peripheral plate 33 is smaller than the outer diameter of the groove 21 of the hollow pipe 2 in the temperature environment of the oil cylinder 8.
During assembly, the peripheral plate 33 is cooled, and the outer diameter of the peripheral plate 33 made of a thermal expansion material is reduced while the inner diameter is increased; after cooling, the peripheral plate 33 is sleeved in the groove 21, after the temperature of the peripheral plate 33 is recovered to be normal, the peripheral plate 33 expands, the inner diameter is reduced, the outer diameter is increased, the inner side surface is tightly attached to the groove 21, and the outer diameter is preferably configured to be flush with the outer side surface of the hollow pipe 2.
This embodiment utilizes expend with heat and contract with cold's mode to realize being connected of peripheral board 33 and recess 21, and joint strength is stable, and along with time lapse, the relative effect of the surface molecule of peripheral board 33 medial surface and recess 21 is stronger and stronger, and joint strength is higher, makes sealing performance good between hollow tube 2.
In one embodiment, in order to fix the relative positions of the circumferential blocks 32, the connecting structure 3 further comprises an inner tube 31, wherein a plurality of circumferential blocks 32 are arranged on the inner tube 31 at equal intervals, and through holes 34 penetrating along the tube direction of the inner tube 31 are formed in the inner tube 31; the inner pipe 31 is inserted into the hollow regions of a plurality of hollow pipes 2 connected in series.
In one embodiment, the oil between the oil cartridge 8 and the hollow sucker rod is heated by electrical heating to avoid the oil from adhering to the hollow sucker rod or the inner wall of the oil cartridge 8. Specifically, the hollow sucker rod further comprises a power supply, a positive cable 5 connected with the positive electrode of the power supply and a negative cable 6 connected with the negative electrode of the power supply, wherein the positive cable 5 and the negative cable 6 extend downwards along the tube direction of the inner tube 31, a positive branch cable 51 is arranged at the position, corresponding to the circumferential block 32, of the positive cable 5, and the positive branch cable 51 is electrically connected with the hollow tube 2 above the circumferential block 32; the negative cable 6 is provided with a negative branch cable 61 at the position corresponding to the circumferential block 32, and the negative branch cable 61 is electrically connected with the hollow tube 2 below the circumferential block 32.
In the electric heating process, current flows out from the positive pole of the power supply and flows out to the positive branch cable 51 through the positive cable 5, and at the positive branch cable 51, the current is divided into two parts: one part of the water flows into the positive branch cable 51 and flows upwards through the pipe wall of the hollow pipe 2, and then flows back to the negative pole of the power supply from a negative branch cable 61 to form a loop; another part continues down the positive cable 5, branching off at each positive branch cable 51.
In the prior art, adhesion is prevented by using an electric heating mode, but in the prior art, a hollow tube is generally directly electrified, and current is conducted to the outer surface of the hollow tube by using a skin effect so as to heat the outer surface. Compared with the traditional electric heating mode, the electric heating device is provided with the multiple sections of hollow pipes 2, each section of hollow pipe 2 independently forms a loop with a power supply, namely, the hollow pipes 2 are connected in parallel, the current of each hollow pipe 2 is larger than that of the mode of connecting all the hollow pipes 2 in series, and the heating value is higher.
In one embodiment, an adjustable resistor is arranged on each negative branch cable 61, and the heating amount of each hollow tube 2 is regulated by the adjustable resistor, so that the hollow tube 2 with high adhesion degree can be effectively and pertinently heated.
In one embodiment, the top of the inner tube 31 corresponds to the top of the first hollow tube 2, and the bottom of the inner tube 32 corresponds to the bottom of the last hollow tube 2; a negative branch cable 61 is arranged at the position of the inner pipe 31 close to the top of the inner pipe, and the negative branch cable 61 is connected between the top of the first hollow pipe 2 and the negative cable 6; a positive branch cable 51 is arranged at the position of the inner pipe 31 close to the bottom of the inner pipe, and the positive branch cable 51 is connected between the bottom of the last hollow pipe 2 and the positive cable 5.
In the present embodiment, the first hollow tube 2 and the last hollow tube 2 are provided with circuit circuits so as to be heated.
In one embodiment, the inner tube 31 is provided with a top cover 35 corresponding to the negative branch cable 61 near the top, the negative branch cable 61 is routed along the top cover 35 and connected to the negative cable 6, the outer diameter of the top cover 35 exceeds the outer diameter of the hollow tube 2, and the top cover has a mounting structure for mounting to the oil cylinder 8; the inner tube 31 is provided with a bottom cover 36 near the positive branch cable 51 at the bottom, and the positive branch cable 51 is routed along the bottom cover 36 and branches from the positive cable 5 to the last hollow tube 2.
This embodiment sets up top cap 35 and bottom 36, when making things convenient for the cable of first hollow tube 2 and last hollow tube 2 to walk the line, can improve hollow sucker rod's wholeness.
In one embodiment, a structure for adding chemical agents to prevent oil adhesion is further provided, specifically, a through hole 34 is formed in the vertical direction of the inner tube 31, and a check valve 7 is arranged between the hollow tube 2 and the solid tube 1.
When adding medicine, the medicine is added from the top end of the through hole 34, flows out of the hollow sucker rod through the one-way valve 7, enters between the hollow sucker rod and the oil cylinder 8, reacts with the oil, reduces the adhesion performance of the oil and removes impurities in the oil.
In one embodiment, the check valve 7 includes an inlet channel 71 connected to the through hole 34, an inclined movable door 72 is rotatably connected to a distal end of the inlet channel 71, and the movable door 72 abuts against the inlet channel 71 to block the inlet channel 71; a medicine supply channel 73 obliquely extending to the outer wall of the one-way valve 7 is arranged below the movable door 72, and a spring is arranged at the rotating connection position of the movable door 72 and the tail end of the inlet channel 71 and is configured as follows: the spring is twisted when the shutter 72 blocks the medicament from falling from the through hole 34.
The embodiment is used for intermittently adding medicine and reducing the dosage. During medicine adding, the medicine falls from the through hole 34 and falls onto the movable door 72, when the medicine amount is accumulated to a certain degree, the spring at the joint of the movable door 72 and the inlet channel 71 is twisted, the movable door 72 rotates, the medicine enters the medicine supply channel 73, enters the oil between the hollow sucker rod and the oil cylinder 8 through the medicine supply channel 73 and reacts with the oil, and then the movable door 72 rebounds under the action of the spring to block the inlet channel 71 again.
After entering the oil, the agent diffuses and well reacts with the oil near the outlet of the drug supply channel 73. When the oil level rises for a certain distance, the medicine is accumulated to a certain amount at the movable door 72, the spring is twisted again under the action of the medicine, the movable door 72 rotates, and the medicine enters the medicine supply channel 73.
In a further embodiment, the spring constant of the spring is arranged to ensure that the intermittent dosing time of the medicament enables the oil to react effectively with the medicament.
In one embodiment, a rectangular horizontal platform 74 is disposed at the middle of the end of the inlet channel 71, four movable doors 72 are disposed and rotatably connected to four sides of the rectangular horizontal platform 74, and the movable doors 72 are matched with each other to block the inlet channel 71; each horizontal platform 74 is correspondingly provided with a medicine supply channel 73.
This embodiment can add the agent into the oil from four directions of the check valve 7 uniformly in the circumferential direction of the inlet passage 71, so that the oil can react with the agent comprehensively.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (9)
1. The anti-deflection hollow sucker rod is characterized by comprising a solid pipe (1) and a plurality of hollow pipes (2), wherein the hollow pipes (2) are sequentially connected through a connecting structure (3), the solid pipe (1) is connected with the hollow pipe (2) at the tail end, and an oil well pump (4) is connected below the solid pipe (1);
the connecting structure (3) comprises a circumferential block (32), the outer surface of the circumferential block (32) is provided with an upper thread and a lower thread, the inner surfaces of the two side ends of the hollow pipes (2) are provided with threads, one thread of the two connected hollow pipes (2) is connected with the upper thread, and the other thread of the two connected hollow pipes is connected with the lower thread;
connection structure (3) still include peripheral board (33), peripheral board (33) are located between two hollow tube (2) that link to each other, be equipped with recess (21) on two tip of hollow tube (2), recess (21) that link to each other two hollow tube (2) communicate with each other, peripheral board (33) are located in two communicating recesses (21).
2. The anti-deflection hollow sucker rod of claim 1 wherein the peripheral plate (33) is of a thermally expansive material and is configured to: when the hollow sucker rod pumps oil in the environment of the oil cylinder (8), the inner diameter of the peripheral plate (33) is smaller than the outer diameter of the groove (21) of the hollow pipe (2) in the temperature environment of the oil cylinder (8).
3. The sucker rod of claim 1, wherein the connecting structure (3) further comprises an inner tube (31), a plurality of circumferential blocks (32) are arranged on the inner tube (31) at equal intervals, and through holes (34) are formed in the inner tube (31) and penetrate through the inner tube in the tube direction;
the inner pipe (31) is inserted into the hollow area of a plurality of hollow pipes (2) which are connected in sequence.
4. The sucker rod of claim 3, further comprising a power source, a positive cable (5) connected to the positive pole of the power source, and a negative cable (6) connected to the negative pole of the power source, wherein the positive cable (5) and the negative cable (6) extend downwards along the tube of the inner tube (31),
the positive cable (5) is provided with a positive branch cable (51) at the position corresponding to the circumferential block (32), and the positive branch cable (51) is electrically connected with the hollow pipe (2) above the circumferential block (32);
the negative cable (6) is provided with a negative branch cable (61) at the position corresponding to the circumferential block (32), and the negative branch cable (61) is electrically connected with the hollow pipe (2) below the circumferential block (32).
5. The anti-deflection hollow sucker rod of claim 4, wherein the top of the inner tube (31) corresponds to the top of the first hollow tube (2), and the bottom of the inner tube (32) corresponds to the bottom of the last hollow tube (2);
a negative branch cable (61) is arranged at the position, close to the top, of the inner pipe (31), and the negative branch cable (61) is connected between the top of the first hollow pipe (2) and the negative cable (6);
and a positive branch cable (51) is arranged at the position, close to the bottom, of the inner pipe (31), and the positive branch cable (51) is connected between the bottom of the last hollow pipe (2) and the positive cable (5).
6. The hollow sucker rod of claim 5, wherein the inner tube (31) is provided with a top cover (35) corresponding to a negative branch cable (61) near the top, the negative branch cable (61) is routed along the top cover (35) and is connected to the negative cable (6), the outer diameter of the top cover (35) exceeds the outer diameter of the hollow tube (2) and is provided with a mounting structure for mounting to an oil cylinder (8);
the bottom cover (36) is arranged on the anode branch cable (51) of the inner tube (31) close to the bottom, and the anode branch cable (51) is routed along the bottom cover (36) and branches from the anode cable (5) to extend to the last hollow tube (2).
7. The sucker rod of claim 1, wherein the inner tube (31) has a through hole (34) in the vertical direction, and a check valve (7) is arranged between the hollow tube (2) and the solid tube (1).
8. The sucker rod of claim 7, wherein the check valve (7) comprises an inlet channel (71) connected with the through hole (34), the end of the inlet channel (71) is rotatably connected with an inclined movable door (72), and the movable door (72) abuts against the inlet channel (71) to block the inlet channel (71);
a medicine supply channel (73) obliquely extending to the outer wall of the one-way valve (7) is arranged below the movable door (72), and a spring is arranged at the rotating connection position of the movable door (72) and the tail end of the inlet channel (71) and is configured to: the spring is twisted when the movable door (72) blocks the medicine from falling from the through hole (34).
9. The sucker rod of claim 8, wherein the central portion of the end of the inlet channel (71) is provided with a rectangular horizontal platform (74), the number of the movable doors (72) is four, the four movable doors are respectively rotatably connected to the four rectangular side surfaces of the horizontal platform (74), and the movable doors (72) are matched with each other to block the inlet channel (71);
each horizontal platform (74) is correspondingly provided with a medicine supply channel (73).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011318159.XA CN112112578A (en) | 2020-11-23 | 2020-11-23 | Hollow sucker rod of anti-deflection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011318159.XA CN112112578A (en) | 2020-11-23 | 2020-11-23 | Hollow sucker rod of anti-deflection |
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| Publication Number | Publication Date |
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| CN112112578A true CN112112578A (en) | 2020-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011318159.XA Withdrawn CN112112578A (en) | 2020-11-23 | 2020-11-23 | Hollow sucker rod of anti-deflection |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3859503A (en) * | 1973-06-12 | 1975-01-07 | Richard D Palone | Electric heated sucker rod |
| CN2078370U (en) * | 1990-11-30 | 1991-06-05 | 大庆石油管理局第十采油厂 | Hollow sucker rod oil-extraction installation |
| CN2177794Y (en) * | 1993-07-27 | 1994-09-21 | 高迺科 | Hollow sucker rod |
| CN2203351Y (en) * | 1994-06-03 | 1995-07-12 | 李守良 | Combined line-frequency skin electrothermal pumping rod |
| CN1149902A (en) * | 1994-05-25 | 1997-05-14 | 若克斯韦尔国际有限公司 | Double walled insulated tubing and method for installing same |
| RU2088754C1 (en) * | 1993-02-22 | 1997-08-27 | Даганг Петролеум Машинери Плант оф Даганг Петролеум Административ Бьюроу | Injection equipment |
| CN1497126A (en) * | 2002-09-26 | 2004-05-19 | ϣ���¿˶��� | Sucker rod and sealing short joint assembly with improved sealing device and liquid hollow torque transmission |
| CN1782325A (en) * | 2004-12-02 | 2006-06-07 | 山东创新石油技术有限公司 | Method for low frequency large current heating raw oil in oil wel pipe string |
| CN2851516Y (en) * | 2005-09-30 | 2006-12-27 | 贺波 | Antiwear protector for oil pumping pipe |
| CN201246154Y (en) * | 2008-08-27 | 2009-05-27 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Thermal extraction seal plug |
| CN201687411U (en) * | 2010-04-27 | 2010-12-29 | 无锡法斯特能源开发科技有限公司 | Anti-corrosion coupling coaxial with oil pipe |
| CN102086758A (en) * | 2010-12-31 | 2011-06-08 | 江苏常宝钢管股份有限公司 | Integral-assembling type heat-insulating oil pipe connection structure |
| CN102121353A (en) * | 2010-12-31 | 2011-07-13 | 江苏常宝钢管股份有限公司 | Split assembly heat-insulating oil pipe connecting structure |
| CN202325453U (en) * | 2011-08-31 | 2012-07-11 | 中国石油天然气股份有限公司 | Geothermal superconducting heat transfer wax removal and prevention sucker rod |
| CN102787828A (en) * | 2011-05-18 | 2012-11-21 | 中国石油化工集团公司 | Method for integrating segregated completion and acid cleaning inflated packing of horizontal well |
| CN202689964U (en) * | 2012-06-21 | 2013-01-23 | 中国石油化工股份有限公司 | Casing thread connecting structure for heat production well |
| CN202767903U (en) * | 2012-09-27 | 2013-03-06 | 郭金明 | Hollow heat carrier sucker rod |
| CN103696703A (en) * | 2013-11-25 | 2014-04-02 | 江苏胜大石油设备制造股份有限公司 | Heat-insulating oil pipe used for small-caliber oil well |
| CN204457699U (en) * | 2014-12-30 | 2015-07-08 | 中国石油天然气股份有限公司 | Under-pump liquid blending system |
| RU2560040C1 (en) * | 2014-06-03 | 2015-08-20 | Открытое акционерное общество "Татнефть" имени В.Д. Шашина | Development method of high-viscosity oil and bitumen deposit |
| CN207080205U (en) * | 2017-07-18 | 2018-03-09 | 中国石油天然气股份有限公司 | Hollow sucker rod pit shaft charge device |
| CN208294440U (en) * | 2017-12-21 | 2018-12-28 | 熊小艳 | A kind of Novel sucker rod |
| CN209637702U (en) * | 2019-01-17 | 2019-11-15 | 任丘市奥源石油科技有限公司 | The anti-bias mill apparatus of electric heating sucker rod stabilizing |
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2020
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| US3859503A (en) * | 1973-06-12 | 1975-01-07 | Richard D Palone | Electric heated sucker rod |
| CN2078370U (en) * | 1990-11-30 | 1991-06-05 | 大庆石油管理局第十采油厂 | Hollow sucker rod oil-extraction installation |
| RU2088754C1 (en) * | 1993-02-22 | 1997-08-27 | Даганг Петролеум Машинери Плант оф Даганг Петролеум Административ Бьюроу | Injection equipment |
| CN2177794Y (en) * | 1993-07-27 | 1994-09-21 | 高迺科 | Hollow sucker rod |
| CN1149902A (en) * | 1994-05-25 | 1997-05-14 | 若克斯韦尔国际有限公司 | Double walled insulated tubing and method for installing same |
| CN2203351Y (en) * | 1994-06-03 | 1995-07-12 | 李守良 | Combined line-frequency skin electrothermal pumping rod |
| CN1497126A (en) * | 2002-09-26 | 2004-05-19 | ϣ���¿˶��� | Sucker rod and sealing short joint assembly with improved sealing device and liquid hollow torque transmission |
| CN1782325A (en) * | 2004-12-02 | 2006-06-07 | 山东创新石油技术有限公司 | Method for low frequency large current heating raw oil in oil wel pipe string |
| CN2851516Y (en) * | 2005-09-30 | 2006-12-27 | 贺波 | Antiwear protector for oil pumping pipe |
| CN201246154Y (en) * | 2008-08-27 | 2009-05-27 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Thermal extraction seal plug |
| CN201687411U (en) * | 2010-04-27 | 2010-12-29 | 无锡法斯特能源开发科技有限公司 | Anti-corrosion coupling coaxial with oil pipe |
| CN102086758A (en) * | 2010-12-31 | 2011-06-08 | 江苏常宝钢管股份有限公司 | Integral-assembling type heat-insulating oil pipe connection structure |
| CN102121353A (en) * | 2010-12-31 | 2011-07-13 | 江苏常宝钢管股份有限公司 | Split assembly heat-insulating oil pipe connecting structure |
| CN102787828A (en) * | 2011-05-18 | 2012-11-21 | 中国石油化工集团公司 | Method for integrating segregated completion and acid cleaning inflated packing of horizontal well |
| CN202325453U (en) * | 2011-08-31 | 2012-07-11 | 中国石油天然气股份有限公司 | Geothermal superconducting heat transfer wax removal and prevention sucker rod |
| CN202689964U (en) * | 2012-06-21 | 2013-01-23 | 中国石油化工股份有限公司 | Casing thread connecting structure for heat production well |
| CN202767903U (en) * | 2012-09-27 | 2013-03-06 | 郭金明 | Hollow heat carrier sucker rod |
| CN103696703A (en) * | 2013-11-25 | 2014-04-02 | 江苏胜大石油设备制造股份有限公司 | Heat-insulating oil pipe used for small-caliber oil well |
| RU2560040C1 (en) * | 2014-06-03 | 2015-08-20 | Открытое акционерное общество "Татнефть" имени В.Д. Шашина | Development method of high-viscosity oil and bitumen deposit |
| CN204457699U (en) * | 2014-12-30 | 2015-07-08 | 中国石油天然气股份有限公司 | Under-pump liquid blending system |
| CN207080205U (en) * | 2017-07-18 | 2018-03-09 | 中国石油天然气股份有限公司 | Hollow sucker rod pit shaft charge device |
| CN208294440U (en) * | 2017-12-21 | 2018-12-28 | 熊小艳 | A kind of Novel sucker rod |
| CN209637702U (en) * | 2019-01-17 | 2019-11-15 | 任丘市奥源石油科技有限公司 | The anti-bias mill apparatus of electric heating sucker rod stabilizing |
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Application publication date: 20201222 |