A segmented connected double hollow sucker rod

Abstract

The present invention discloses a segmented connected double hollow sucker rod, which belongs to the field of sucker rods and comprises a sucker rod component, the top end of the sucker rod component is rotatably installed with a connecting joint component, the connecting joint component is used to combine multiple sucker rod components to form a sucker rod body, the bottom end of the sucker rod body is sleeved with an impact head component, the sucker rod component comprises a first cylinder, a second cylinder is fixedly installed inside the first cylinder, a first chamber is provided inside the second cylinder, a second chamber is formed between the first cylinder and the second cylinder, and the steam in the inner channel is always kept in a positive pressure state by arranging a third cylinder and a fourth cylinder, so that the steam temperature inside the inner channel can be increased due to the pressurization, and the heat loss during transportation is further offset, and the hot steam is transported upward from the bottom end of the outer channel, which can heat the deep oil at the same time and can also ensure that the oil inside the wellbore is stably heated at the same time.

Description

Technical Field

[0001] The invention relates to the field of sucker rods, and more particularly to a segmented connected double hollow sucker rod. Background Art

[0002] Double hollow sucker rods are generally composed of two hollow tubes. The inner and outer tubes are combined together to form a hollow cylinder with a hollow hole in the middle. There is a jump thorn between the inner and outer tubes, which can effectively prevent the inner and outer tubes from being misaligned. In addition, it also has special two-way sealing to withstand large pulling force and long-term conversion of kinetic energy and potential energy.

[0003] The double hollow sucker rod itself is not used directly for pumping oil, but is used as an auxiliary tool for heating and viscosity reduction to improve the fluidity of crude oil, making it easier to extract. In heavy oil production, due to the high viscosity and poor fluidity of crude oil, direct extraction is often difficult. Therefore, a double hollow sucker rod closed cycle heating process is adopted.

[0004] When transporting heat carriers, traditional double hollow sucker rods often suffer from large heat loss during transportation, resulting in the heat carrier temperature being low when it is transported to the bottom and unable to heat the oil at the bottom.

[0005] In view of this, in order to solve the above-mentioned shortcomings, the present invention produces a segmented connected double hollow sucker rod. Summary of the invention

[0006] In view of the problems existing in the prior art, the purpose of the present invention is to provide a segmented connected double hollow sucker rod, which can reduce heat loss during transportation and heat hot steam to make it have higher energy.

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A segmented connected double hollow sucker rod, comprising a sucker rod component, a connection joint component is rotatably mounted on the top end of the sucker rod component, the connection joint component is used to combine multiple sucker rod components to form a sucker rod body, and an impact head component is sleeved on the bottom end of the sucker rod body;

[0009] The sucker rod component includes a first cylinder, a second cylinder is fixedly installed inside the first cylinder, a first chamber is provided inside the second cylinder, a second chamber is formed between the first cylinder and the second cylinder, a third cylinder is slidably clamped on the lower end of the interior of the first cylinder, a fourth cylinder is fixedly installed inside the third cylinder, a third chamber is provided inside the fourth cylinder, a fourth chamber is formed between the third and fourth cylinders, the fourth cylinder is slidably sleeved on the outer surface of the second cylinder, a pressure limiting component is fixedly installed on the upper end of the interior of the sucker rod component, a plurality of evenly distributed through grooves are opened on the fourth cylinder, and a first connecting cylinder is fixedly installed on the bottom end of the fourth cylinder.

[0010] Furthermore, a fifth cylinder is fixedly installed on the top of the third cylinder, a rigid spring is fixedly connected between the fifth cylinder and the first cylinder, the pressure limiting component is located above the fifth cylinder, and a plurality of evenly distributed connecting plates are fixedly installed on the upper surface of the fifth cylinder, a latch tooth is integrally formed at the top of the connecting plate, and the latch tooth is used to cooperate with the pressure limiting component to generate impact force.

[0011] Furthermore, the pressure limiting component includes a fixed inclined plate, which is fixedly installed on the inner wall of the first cylinder, a rotating ring is rotatably installed in the middle of the fixed inclined plate, and a plurality of evenly distributed blocking blocks are fixedly installed on the inner side of the rotating ring, one side of the blocking block is inclined, and a matching inclined plate is fixedly installed on the upper surface of one end of the blocking block close to the inclined surface, an annular groove is provided on the matching inclined plate, the lower surface of the latch tooth is fitted with the surface of the matching inclined plate, and a plurality of protrusions matching with the annular groove are fixedly installed on the lower surface of the latch tooth.

[0012] Furthermore, the connecting joint component includes a connecting shell, the interior of the connecting shell is provided with an inner locking cylinder through a threaded fit, a blocking ring is fixedly installed at the inner circle of the inner locking cylinder, and a plurality of evenly distributed L-shaped connecting parts are fixedly installed on the upper surface of the blocking ring, a bracket is fixedly installed at the inner bottom end of the connecting shell, a third connecting cylinder is fixedly installed on the bracket, the third connecting cylinder is connected to the first chamber, and the inner locking cylinder is connected to the second chamber, a plurality of slots corresponding to the L-shaped connecting parts are opened on the upper surface of the connecting shell, and a plurality of matching bevel blocks corresponding to the L-shaped connecting parts are fixedly installed on the lower end of the outer surface of the first cylinder.

[0013] Furthermore, the impact head component includes an impact cylinder, which is sleeved on the outer bottom end of the first cylinder, and an impact drill bit is rotatably installed on the bottom end of the impact cylinder. A second connecting cylinder is fixedly installed on the middle part of the upper surface of the impact drill bit, and a plurality of evenly distributed impact inclined plates are fixedly installed on the outer lower surface of the impact drill bit.

[0014] Furthermore, a plurality of evenly distributed first inclined plates are fixedly mounted on the lower end of the outer surface of the impact cylinder, spoilers are integrally formed on the first inclined plates, and a second inclined plate is fixedly mounted on the upper end of the outer surface of the impact cylinder.

[0015] Furthermore, two symmetrical sealing rings are provided above the impact cylinder, and a plurality of L-shaped clamps distributed in a ring are fixedly installed on the upper surface of the impact cylinder. The two sealing rings are hinged to each other, and a plurality of L-shaped clamps are clamped by the sealing rings. The sealing rings are slidably sleeved on the outer surface of the first cylinder.

[0016] Furthermore, the plurality of first inclined plates are all installed in an upward-inclined manner, and the plurality of second inclined plates are installed in a downward-inclined manner.

[0017] Furthermore, a plurality of evenly distributed spiral grooves are provided inside the impact cylinder, and the spiral grooves are used in conjunction with a matching inclined block on the lowest first cylinder, and a mesh for filtering is provided on the second inclined plate.

[0018] Furthermore, the first chambers inside two adjacent sucker rod components are interconnected, the second chambers inside two adjacent sucker rod components are interconnected, and the first chamber and the second chamber are sealed to each other.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. This device is provided with the third cylinder and the fourth cylinder so that the steam in the inner channel is always kept in a positive pressure state, and the steam temperature inside the inner channel can be increased due to the pressurization, which further offsets the heat loss during transportation. The hot steam is transported upward from the bottom of the outer channel, which can heat the deep oil at the same time and ensure that the oil inside the wellbore is stably heated.

[0021] 2. The device is provided with a pressure-limiting component. When the sucker rod body is broken due to excessive tension or excessive bending during use, the L-shaped connector will be stuck in the groove when it rises, so that the matching bevel block can still be supported by the connecting shell when it breaks. Moreover, because the third connecting cylinder and the first connecting cylinder are located in the middle of the connecting shell and are not easily damaged, when the connecting shell and the inner locking cylinder are damaged, the third connecting cylinder and the first connecting cylinder can provide additional tension, thereby providing multiple protections to prevent the sucker rod components from breaking inside the wellbore.

[0022] 3. This device sets a first inclined plate. When the impact cylinder is driven by steam to move back and forth, the first inclined plate is set upward, so the surrounding heated oil can be pulled into the wellbore. In addition, the extension of the impact cylinder can pull the oil in the distance to the front for easier absorption.

[0023] 4. Because the device is provided with a spiral groove, when the impact cylinder is pushed, the spiral groove slides on the outside of the matching inclined block, and then the impact cylinder will generate a rotational force, causing the impact cylinder to rotate. In conjunction with the spoiler block on the first inclined plate, it can continuously disturb the surrounding heated oil, so that the oil around the impact cylinder will be driven to circulate, thereby making the heating area wider and the heat exchange efficiency between oil and steam higher.

[0024] 5. The device is provided with a second inclined plate. Because the second inclined plate is of downward-inclined design, it can filter impurities inside the wellbore under reciprocating push-pull cycles and push them out of the wellbore at the same time, thereby preventing impurities from entering the wellbore, preventing blockage and damage to the device, and improving the purity of the recovered oil. In addition, with the reciprocating impact of the impact head component, the debris on the path can be broken, making it easier for the sucker rod to penetrate into the oil well. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the connection structure of the sucker rod component, the impact head component, and the connection joint component in the present invention;

[0027] Figure 3 It is a schematic diagram of the cross-section structure of the sucker rod component in the present invention;

[0028] Figure 4 It is a schematic diagram of the connection structure between the third cylinder and the fourth cylinder in the present invention;

[0029] Figure 5 It is a schematic diagram of the structure of the impact head component in the present invention;

[0030] Figure 6 It is a schematic diagram of the cross-section structure of the connection shell in the present invention;

[0031] Figure 7 It is a structural schematic diagram of the connecting joint component in the present invention;

[0032] Figure 8 It is a structural schematic diagram of the pressure limiting component in the present invention;

[0033] Fig. 9 It is a schematic diagram of the connection structure between the present invention and the wellbore;

[0034] Fig.10 It is a schematic diagram of the structure of the spiral groove of the present invention.

[0035] Description of the numbers in the figure:

[0036] 1. Sucker rod component; 2. Impact head component; 3. Connecting joint component; 4. Pressure limiting component; 11. First cylinder; 12. Second cylinder; 13. Third cylinder; 14. Fourth cylinder; 15. Fifth cylinder; 16. Rigid spring; 21. Impact cylinder; 22. Impact drill bit; 23. Spiral groove; 24. Sealing clamp; 25. First inclined plate; 26. Second inclined plate; 31. Connecting shell; 32. Inner locking cylinder; 33. Bracket ; 34, blocking ring; 41, fixed inclined plate; 42, rotating ring; 43, blocking block; 44, matching inclined plate; 111, matching inclined block; 141, through groove; 142, first connecting tube; 151, connecting plate; 152, latching teeth; 211, L-shaped clamping piece; 221, second connecting tube; 222, impact inclined plate; 251, spoiler block; 311, clamping groove; 331, third connecting tube; 341, L-shaped connecting piece; 441, annular groove. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0038] See also Figures 1 to 9 A segmented connected double hollow sucker rod comprises a sucker rod component 1, a connecting joint component 3 is rotatably installed at the top of the sucker rod component 1, the connecting joint component 3 is used to combine multiple sucker rod components 1 to form a sucker rod body, the bottom end of the sucker rod body is sleeved with an impact head component 2, the sucker rod component 1 comprises a first barrel 11, a second barrel 12 is fixedly installed inside the first barrel 11, a first chamber is formed inside the second barrel 12, a second chamber is formed between the first barrel 11 and the second barrel 12, a third barrel 13 is slidably clamped at the lower end of the first barrel 11, and the third barrel 13 is fixedly installed inside A fourth cylinder 14 is installed, and a third chamber is formed inside the fourth cylinder 14. A fourth chamber is formed between the third cylinder 13 and the fourth cylinder 14. The fourth cylinder 14 is slidably sleeved on the outer surface of the second cylinder 12. A pressure limiting component 4 is fixedly installed on the upper end of the inner part of the sucker rod component 1. A plurality of evenly distributed through grooves 141 are opened on the fourth cylinder 14. A first connecting cylinder 142 is fixedly installed on the bottom end of the fourth cylinder 14. The first chambers inside two adjacent sucker rod components 1 are interconnected, and the second chambers inside two adjacent sucker rod components 1 are interconnected, and the first chamber and the second chamber are sealed to each other.

[0039] When actually using, first connect the impact head component 2 with one of the sucker rod components 1, then use the clamping device on the ground to clamp the sucker rod component 1 and put it into the wellbore of the pumping well, then connect another sucker rod component 1 with the connecting joint component 3 inside the wellbore, and after the connection is completed, send it into the wellbore, so as to reciprocately connect multiple sucker rod components 1 to form a sucker rod body, and there is an oil pumping channel between the sucker rod body and the wellbore, and the oil pump is connected to the oil pumping channel using a pipeline, so as to realize the oil pumping effect, and the first chambers inside the multiple sucker rod components 1 are connected to each other The second chambers inside the multiple sucker rod components 1 are interconnected to form an outer channel. In actual use, high-temperature steam is input into the inner channel through the ground device. The steam passes through the inner channel and enters the interior of the impact head component 2, and is transported to the outer channel through the interior of the impact head component 2. Then, the steam releases heat in the outer channel and returns to the inside of the ground device for reheating. The impact head component 2 can heat the deep oil to reduce its viscosity, making it easier to extract. When the steam flows in the outer channel, it can heat the oil inside the wellbore to reduce its viscosity.

[0040] When transporting high-temperature steam, because the oil is often located deeper underground, the steam often generates heat loss during transportation, resulting in low heating efficiency of the deep oil and failure to reduce its viscosity, which is extremely inconvenient when extracting. Therefore, the device sets a pressure-limiting component 4 and an impact head component 2, and the steam circulates through the inner channel, which is isolated from the external environment, thereby reducing the heat loss between the steam and the environment and increasing the transportable distance. The impact head component 2 can pressurize the steam inside the inner channel. Only when the pressure exceeds the threshold of the pressure-limiting component 4 will the inner channel be connected to the outer channel, so that the steam in the inner channel always maintains a positive pressure state, and the steam temperature inside the inner channel can be increased due to the pressurization, further offsetting the heat loss during transportation. The hot steam is transported upward from the bottom of the outer channel, which can simultaneously heat the deep oil and ensure that the oil inside the wellbore is stably heated.

[0041] A fifth cylinder 15 is fixedly installed on the top of the third cylinder 13, a rigid spring 16 is fixedly connected between the fifth cylinder 15 and the first cylinder 11, the pressure limiting component 4 is located above the fifth cylinder 15, and a plurality of evenly distributed connecting plates 151 are fixedly installed on the upper surface of the fifth cylinder 15, a latch tooth 152 is integrally formed at the top of the connecting plate 151, and the latch tooth 152 is used to cooperate with the pressure limiting component 4 to generate impact force.

[0042] The pressure limiting component 4 includes a fixed inclined plate 41, which is fixedly mounted on the inner wall of the first cylinder 11. A rotating ring 42 is rotatably mounted in the middle of the fixed inclined plate 41. A plurality of evenly distributed blocking blocks 43 are fixedly mounted on the inner side of the rotating ring 42. One side of the blocking block 43 is inclined. A matching inclined plate 44 is fixedly mounted on the upper surface of one end of the blocking block 43 close to the inclined surface. An annular groove 441 is provided on the matching inclined plate 44. The lower surface of the latch tooth 152 is fitted with the surface of the matching inclined plate 44. A plurality of protrusions matching with the annular groove 441 are fixedly mounted on the lower surface of the latch tooth 152.

[0043] When in use, the steam will generate thrust on the impact head component 2. When the thrust exceeds the threshold of the pressure limiting component 4, the thrust exceeds the friction between the latch tooth 152 and the matching inclined plate 44, and then the connecting plate 151 will produce elastic deformation, so that the latch tooth 152 and the matching inclined plate 44 lose the connection effect. The annular groove 441 is used to increase the friction between the matching inclined plate 44 and the latch tooth 152, and then the second cylinder 12 is pushed under the action of high-pressure steam. When the second cylinder 12 is pushed, it will drive the third cylinder 13 and the fourth cylinder 14 to descend, so that the impact head component 2 can generate impact force. When it is actually used. When the steam inside the inner channel is released, the steam pressure is low because of its fast flow rate inside the inner channel. Under the action of the rigid spring 16, the fifth cylinder 15 is pulled up again. At the same time, the latch tooth 152 rises and contacts the inclined surface of the blocking block 43. The latch tooth 152 will push the blocking block 43, and the blocking block 43 drives the rotating ring 42 to rotate. A torsion spring is fixedly connected between the rotating ring 42 and the fixed inclined plate 41. When the latch tooth 152 rises above the blocking block 43, the blocking block 43 and the matching inclined plate 44 will re-lock the latch tooth 152 under the action of the torsion spring, so as to realize cyclic impact.

[0044] The connecting joint component 3 includes a connecting shell 31, the interior of the connecting shell 31 is provided with an inner locking cylinder 32 through a threaded fit, a blocking ring 34 is fixedly installed at the inner circle of the inner locking cylinder 32, and a plurality of evenly distributed L-shaped connecting members 341 are fixedly installed on the upper surface of the blocking ring 34, a bracket 33 is fixedly installed at the inner bottom end of the connecting shell 31, a third connecting cylinder 331 is fixedly installed on the bracket 33, the third connecting cylinder 331 is connected to the first chamber, and the inner locking cylinder 32 is connected to the second chamber, a plurality of card grooves 311 corresponding to the L-shaped connecting member 341 are opened on the upper surface of the connecting shell 31, and a plurality of matching inclined blocks 111 corresponding to the L-shaped connecting member 341 are fixedly installed on the lower end of the outer surface of the first cylinder 11.

[0045] When splicing, align the matching bevel block 111 on the adjacent first cylinder 11 with the slot 311 on the connecting shell 31 and then insert it into the connecting shell 31 until the matching bevel block 111 is blocked by the blocking ring 34. At this time, rotate the connecting shell 31, and the L-shaped connecting piece 341 will clamp the matching bevel block 111. As the connecting shell 31 continues to rotate, the inner locking cylinder 32 and the L-shaped connecting piece 341 will gradually drive the matching bevel block 111 and the first cylinder 11 to descend. At the same time, the third connecting cylinder 331 is engaged with the first connecting cylinder 142. As the connecting shell 31 rotates, the third connecting cylinder 331 and the first connecting cylinder 142 are gradually tightened, and the inner locking cylinder 32 will gradually drive the first cylinder 11 to descend and tightly press it with the bracket 33, thereby realizing the connection between multiple sucker rod components 1.

[0046] The present invention provides a connecting joint component 3. When the sucker rod body is broken due to excessive tension or excessive bending during use, since the inner locking cylinder 32 and the connecting shell 31 are the main load-bearing components, when it breaks, the threads between the inner locking cylinder 32 and the connecting shell 31 are often worn out and lose their function first. At this time, the cooperating inclined block 111 will drive the L-shaped connecting piece 341 and the blocking ring 34 to rise rapidly. Since the L-shaped connecting piece 341 is L-shaped, when the L-shaped connecting piece 341 rises, it will be stuck by the groove 311, and then the cooperating inclined block 111 can still be supported by the connecting shell 31. Moreover, since the third connecting cylinder 331 and the first connecting cylinder 142 are located in the middle of the connecting shell 31 and are not easily damaged, when the connecting shell 31 and the inner locking cylinder 32 are damaged, the third connecting cylinder 331 and the first connecting cylinder 142 can provide additional tension, thereby providing multi-layer protection to prevent the sucker rod component 1 from breaking inside the wellbore.

[0047] The impact head component 2 includes an impact cylinder 21, which is sleeved on the outer bottom end of the first cylinder 11. An impact drill bit 22 is rotatably installed on the bottom end of the impact cylinder 21. A second connecting cylinder 221 is fixedly installed in the middle of the upper surface of the impact drill bit 22. A plurality of evenly distributed impact inclined plates 222 are fixedly installed on the outer lower surface of the impact drill bit 22. Two symmetrical sealing clamps 24 are provided above the impact cylinder 21. A plurality of annularly distributed L-shaped clamps 211 are fixedly installed on the upper surface of the impact cylinder 21. The two sealing clamps 24 are hinged to each other. A plurality of L-shaped clamps 211 are clamped by the sealing clamps 24. The sealing clamps 24 are slidably sleeved on the outer surface of the first cylinder 11.

[0048] When the impact head component 2 is pushed to produce an impact, the impact inclined plate 222 can break through obstacles along the way, and with the reciprocating impact, the impact inclined plate 222 can drive the impact drill bit 22 to rotate, further increasing the crushing effect. During installation, the second connecting cylinder 221 is connected to the first connecting cylinder 142 on the fourth cylinder body 14 at the bottom. When the impact drill bit 22 is driven to rotate by the second connecting cylinder 221, the connection between the second connecting cylinder 221 and the first connecting cylinder 142 can be made tighter.

[0049] A plurality of evenly distributed first inclined plates 25 are fixedly installed at the lower end of the outer surface of the impact cylinder 21, and a spoiler block 251 is integrally formed on the first inclined plate 25. A second inclined plate 26 is fixedly installed at the upper end of the outer surface of the impact cylinder 21, and a mesh for filtering is provided on the second inclined plate 26. A plurality of evenly distributed spiral grooves 23 are provided inside the impact cylinder 21, and the spiral grooves 23 are used in conjunction with the matching inclined block 111 on the lowest first cylinder 11. The plurality of first inclined plates 25 are all installed in an upward inclined manner, and the second inclined plate 26 is installed in a downward inclined manner.

[0050] When the impact cylinder 21 is driven by steam to move back and forth, because the first inclined plate 25 is set upward, the surrounding heated oil can be pulled into the wellbore, and because the impact cylinder 21 is extended, the oil in the distance can be pulled to the front for easier absorption.

[0051] Because the device is provided with the spiral groove 23, when the impact cylinder 21 is pushed, the spiral groove 23 slides on the outside of the matching inclined block 111, and then the impact cylinder 21 generates a rotational force, causing the impact cylinder 21 to rotate, and cooperates with the spoiler block 251 on the first inclined plate 25 to continuously disturb the surrounding heated oil, so that the oil around the impact cylinder 21 will be driven to circulate, thereby making the heating area wider and making the heat exchange efficiency between oil and steam higher.

[0052] When in use, the second inclined plate 26 and the first inclined plate 25 are both located inside the wellbore. When the impact head component 2 is pushed, the first inclined plate 25 extends to the outside of the wellbore, and with the reciprocating push of the impact head component 2, it can pull the heated oil outside into the wellbore, while the second inclined plate 26 is always located inside the wellbore, and the second inclined plate 26 is a downward-inclined design, which can filter impurities inside the wellbore under reciprocating push and pull, and at the same time be pushed out of the wellbore, which can prevent impurities from entering the wellbore, prevent blockage and damage to the device, and improve the purity of the recovered oil.

[0053] Working principle: When in actual use, first sleeve the impact cylinder 21 on the outer bottom end of one of the first cylinders 11, slide the matching inclined block 111 into the spiral groove 23, and then rotate the impact drill bit 22 to connect the second connecting cylinder 221 with the first connecting cylinder 142, and then tighten the sealing clamp ring 24 with screws, and clamp all the second connecting cylinders 221, so as to complete the connection between the impact head component 2 and the sucker rod component 1;

[0054] Then, use the clamping device on the ground to clamp the sucker rod component 1 and put it into the wellbore of the pumping well, and then connect another sucker rod component 1 to the connecting joint component 3 inside the wellbore. After the connection is completed, send it into the wellbore, so as to reciprocate and connect multiple sucker rod components 1 to form a sucker rod body. There is an oil pumping channel between the sucker rod body and the wellbore, and the oil pump is connected to the oil pumping channel using a pipeline. The first chambers inside the multiple sucker rod components 1 are interconnected to form an inner channel, and the second chambers inside the multiple sucker rod components 1 are interconnected to form an outer channel. In actual use, high-temperature steam is input into the interior of the inner channel through the ground device, and then passes through the inner channel and enters the interior of the impact head component 2, and is transported to the interior of the outer channel through the interior of the impact head component 2, and then the steam releases heat in the outer channel and returns to the inside of the ground device for reheating.

[0055] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A segmented connected double hollow sucker rod, comprising a sucker rod component (1), characterized in that: A connecting joint component (3) is rotatably mounted on the top end of the sucker rod component (1), and the connecting joint component (3) is used to combine a plurality of sucker rod components (1) to form a sucker rod body, and an impact head component (2) is sleeved on the bottom end of the sucker rod body; The sucker rod component (1) comprises a first cylinder (11), a second cylinder (12) is fixedly installed inside the first cylinder (11), a first chamber is provided inside the second cylinder (12), a second chamber is formed between the first cylinder (11) and the second cylinder (12), a third cylinder (13) is slidably mounted on the lower end of the first cylinder (11), a fourth cylinder (14) is fixedly installed inside the third cylinder (13), a third chamber is provided inside the fourth cylinder (14), a fourth chamber is formed between the third cylinder (13) and the fourth cylinder (14), the fourth cylinder (14) is slidably sleeved on the outer surface of the second cylinder (12), a pressure limiting component (4) is fixedly installed on the upper end of the sucker rod component (1), a plurality of evenly distributed through grooves (141) are provided on the fourth cylinder (14), and a first connecting cylinder (142) is fixedly installed on the bottom end of the fourth cylinder (14); A fifth cylinder (15) is fixedly mounted on the top of the third cylinder (13); a rigid spring (16) is fixedly connected between the fifth cylinder (15) and the first cylinder (11); the pressure limiting component (4) is located above the fifth cylinder (15); a plurality of evenly distributed connecting plates (151) are fixedly mounted on the upper surface of the fifth cylinder (15); a latching tooth (152) is integrally formed at the top of the connecting plate (151); the latching tooth (152) is used to cooperate with the pressure limiting component (4) to generate an impact force; The pressure limiting component (4) comprises a fixed inclined plate (41), the fixed inclined plate (41) being fixedly mounted on the inner wall of the first cylinder (11), a rotating ring (42) being rotatably mounted in the middle of the fixed inclined plate (41), a plurality of evenly distributed blocking blocks (43) being fixedly mounted on the inner side of the rotating ring (42), one side of the blocking block (43) being arranged in an inclined shape, a matching inclined plate (44) being fixedly mounted on the upper surface of one end of the blocking block (43) close to the inclined surface, an annular groove (441) being formed on the matching inclined plate (44), the lower surface of the latching tooth (152) being in contact with the surface of the matching inclined plate (44), and a plurality of protrusions matching with the annular groove (441) being fixedly mounted on the lower surface of the latching tooth (152).

2. The segmented connected double hollow sucker rod according to claim 1, characterized in that: The connecting joint component (3) comprises a connecting shell (31), the interior of the connecting shell (31) is provided with an inner locking cylinder (32) through threaded engagement, a blocking ring (34) is fixedly mounted at the inner ring of the inner locking cylinder (32), a plurality of evenly distributed L-shaped connecting members (341) are fixedly mounted on the upper surface of the blocking ring (34), a bracket (33) is fixedly mounted at the inner bottom end of the connecting shell (31), a third connecting cylinder (331) is fixedly mounted on the bracket (33), the third connecting cylinder (331) is communicated with the first chamber, the inner locking cylinder (32) is communicated with the second chamber, a plurality of slots (311) corresponding to the L-shaped connecting members (341) are formed on the upper surface of the connecting shell (31), and a plurality of matching inclined blocks (111) corresponding to the L-shaped connecting members (341) are fixedly mounted on the lower end of the outer surface of the first cylinder (11).

3. The segmented connected double hollow sucker rod according to claim 2, characterized in that: The impact head component (2) comprises an impact cylinder (21), the impact cylinder (21) being sleeved on the outer bottom end of the first cylinder (11), an impact drill bit (22) being rotatably mounted on the bottom end of the impact cylinder (21), a second connecting cylinder (221) being fixedly mounted on the middle of the upper surface of the impact drill bit (22), and a plurality of evenly distributed impact inclined plates (222) being fixedly mounted on the outer lower surface of the impact drill bit (22).

4. The segmented connected double hollow sucker rod according to claim 3, characterized in that: A plurality of evenly distributed first inclined plates (25) are fixedly mounted on the lower end of the outer surface of the impact cylinder (21), a spoiler block (251) is integrally formed on the first inclined plate (25), a second inclined plate (26) is fixedly mounted on the upper end of the outer surface of the impact cylinder (21), and a plurality of evenly distributed spiral grooves (23) are formed inside the impact cylinder (21).

5. The segmented connected double hollow sucker rod according to claim 4, characterized in that: Two symmetrical sealing clamps (24) are arranged above the impact cylinder (21); a plurality of L-shaped clamps (211) distributed in an annular shape are fixedly mounted on the upper surface of the impact cylinder (21); the two sealing clamps (24) are hinged to each other; the plurality of L-shaped clamps (211) are clamped by the sealing clamps (24); and the sealing clamps (24) are slidably sleeved on the outer surface of the first cylinder (11).

6. The segmented connected double hollow sucker rod according to claim 5, characterized in that: The plurality of first inclined plates (25) are all installed in an upward-inclined manner, and the second inclined plates (26) are installed in a downward-inclined manner.

7. The segmented connected double hollow sucker rod according to claim 6, characterized in that: The second inclined plate (26) is provided with meshes for filtering, and the spiral groove (23) is used in conjunction with a matching inclined block (111) on the lowermost first cylinder (11).

8. The segmented connected double hollow sucker rod according to claim 7, characterized in that: The first chambers inside two adjacent sucker rod components (1) are interconnected, the second chambers inside two adjacent sucker rod components (1) are interconnected, and the first chamber and the second chamber are sealed to each other.

Images