CN211623679U - Wear-proof ultra-long oil well pump - Google Patents
Wear-proof ultra-long oil well pump Download PDFInfo
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- CN211623679U CN211623679U CN202020198799.0U CN202020198799U CN211623679U CN 211623679 U CN211623679 U CN 211623679U CN 202020198799 U CN202020198799 U CN 202020198799U CN 211623679 U CN211623679 U CN 211623679U
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- 239000003129 oil well Substances 0.000 title claims abstract description 68
- 238000005086 pumping Methods 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 230000007423 decrease Effects 0.000 claims description 6
- 238000005299 abrasion Methods 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 12
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 106
- 238000000605 extraction Methods 0.000 description 6
- 239000010779 crude oil Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model provides an anti-abrasion ultra-long oil well pump, which relates to the technical field of oil exploitation equipment and comprises a plunger device and a pump cylinder device; the plunger device is used for moving along the oil pumping channel of the pump barrel device; the pump cylinder device comprises a pump cylinder and an oil pipe; the number of the pump cylinders is at least two, any two pump cylinders are connected through an oil pipe, the plunger and the pump cylinders can wear, but the oil pipe and the plunger device do not wear, and the length of the plunger device is greater than that of the pump cylinders, so that in the use process, the plunger device is in contact wear with the pump cylinders in a longer whole course, the pump cylinders are in contact wear with the plunger device in a shorter and discontinuous way, the wear cycle of the plunger device and the pump cylinders is more average after the use, the service lives of the plunger device and the pump cylinders are equivalent, the sealing surface is prolonged by utilizing the plunger device, the service life of the oil-well pump is longer, the technical problems of pump cylinder waste and poor economy of the oil-well pump in the prior art are solved.
Description
Technical Field
The utility model belongs to the technical field of oil development equipment technique and specifically relates to a abrasionproof decreases overlength oil-well pump is related to.
Background
Mechanical equipment is used to lift crude oil in a well to the ground in the process of extracting the oil from a stratum, and an oil pump is a main oil extraction device. The oil well pump is a special reciprocating pump, the power is transmitted to the underground from the ground through the sucker rod, so that the plunger of the oil well pump reciprocates up and down to lift the crude oil in the oil well to the ground along the oil pipe; along with the increase of the exploitation depth of an oil well, the stroke of an oil well pump is longer and longer, and it needs to be explained that a plunger of the oil well pump moves up and down in a pump cylinder once to form one stroke, and in order to realize an ultra-long stroke, a long pump cylinder is needed.
In order to realize long stroke, the oil well pump in the prior art needs to be connected by more than 5 pump cylinders with the length of more than or equal to 10 meters, and the length of the sealing surface of the plunger is more than or equal to 1.5 meters. In the using process, because the length of the plunger is shorter, the plunger is worn by contacting with the pump barrel in the whole process, the pump barrel is longer and discontinuous and worn by contacting with the plunger, the pump barrel of the oil well pump generally adopts a chrome-plated pump barrel which has the characteristic of high hardness and wear resistance, and the plunger of the oil well pump generally adopts a spray welding plunger which has low hardness and has the characteristic of non-wear resistance relative to the plunger of the pump barrel; it can be seen that the pump barrel is the most valuable part of all the parts of the pump, and the plunger is of lower value.
However, in the process of the whole-course abrasion of the plunger, the plunger is damaged prematurely due to abrasion, and the pump cylinder can be used continuously, but the whole oil-well pump is scrapped due to the damage of the plunger, so that the oil-well pump in the prior art has the problems of incomplete use and high cost due to the fact that the pump cylinder is wasted.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an abrasionproof decreases overlength oil-well pump to alleviate the extravagant pump cylinder that exists among the prior art, the oil-well pump uses incompletely, technical problem with high costs.
The utility model provides a pair of abrasionproof decreases overlength oil-well pump, include: plunger means and pump barrel means;
the plunger device is positioned in the oil pumping channel of the pump barrel device and is used for moving along the oil pumping channel of the pump barrel device;
the pump cylinder device comprises a pump cylinder and an oil pipe; the number of the pump cylinders is at least two, any two pump cylinders are connected through the oil pipe, and the plunger device is in sealing fit with the pump cylinders; the length of any one pump cylinder is smaller than that of the plunger device, the length of the oil pipe is smaller than that of the plunger device, and the inner diameter of the oil pipe is larger than the outer diameter of the plunger device, so that when the plunger device moves to the oil pipe position, a gap is formed between the plunger device and the oil pipe.
In a preferred embodiment of the present invention, the plunger device comprises a plunger living hinge, a first section of plunger and a second section of plunger; the first section plunger and the second section plunger are connected through the plunger hinge joint, and the plunger hinge joint is used for enabling the first section plunger and the second section plunger to deflect relatively.
In the preferred embodiment of the present invention, the length of the first section of plunger is greater than the length of the second section of plunger, and the second section of plunger is located at one end of the pump cylinder device near the bottom of the oil well.
In a preferred embodiment of the present invention, one end of the second section of plunger is provided with a through hole, the plunger movable joint is inserted into the through hole, and the side wall of the second section of plunger close to the through hole is provided with a stepped groove, one end of the plunger movable joint is clamped with the stepped groove, and the plunger movable joint can deflect in a horizontal direction relative to the stepped groove;
and one end of the plunger movable joint extending out of the second section of plunger is connected with the thread of the first section of plunger.
In a preferred embodiment of the present invention, the stepped groove of the second section plunger is arc-shaped.
In a preferred embodiment of the present invention, the plunger device further comprises a first control valve and a second control valve;
the first control valve is positioned between the plunger joint and the first section plunger, and the first control valve is connected with the first section plunger;
the number of the second control valves is two, one second control valve is connected with one end, away from the plunger movable joint, of the first plunger section, and the other second control valve is connected with one end, away from the plunger movable joint, of the second plunger section.
Optionally, at least one of the first control valve and the second control valve at the end of the first section of the plunger remote from the plunger joint remains.
In a preferred embodiment of the present invention, the length of the pump cylinder is less than the length of the oil pipe, and the total length of the oil pipe and the adjacent pump cylinder is greater than the length of the plunger device.
In a preferred embodiment of the present invention, a first joint is disposed at an end of the oil pipe away from the bottom of the oil well, an end of the pump cylinder is inserted into the first joint, and the pump cylinder is connected with the first joint through a screw thread;
the other end of the oil pipe is provided with a threaded section, the other end of the pump barrel is provided with a second joint, and the oil pipe is inserted into the adjacent pump barrel through the threaded section and is in threaded connection with the second joint of the pump barrel.
In a preferred embodiment of the present invention, the end of the pump barrel inserted into the first joint is tapered.
In the preferred embodiment of the present invention, the device further comprises a fixed valve device;
the fixed valve device is connected with the pump cylinder device positioned at the bottom of the oil well.
The utility model provides a pair of abrasionproof decreases overlength oil-well pump, include: plunger means and pump barrel means; the plunger device is positioned in the oil pumping channel of the pump barrel device and used for moving along the oil pumping channel of the pump barrel device so as to lift crude oil in an oil well to the ground along an oil pipe by using the movement of the plunger device; the pump cylinder device comprises a pump cylinder and an oil pipe; the number of the pump cylinders is at least two, any two pump cylinders are connected through an oil pipe, and the plunger device is in sealing fit with the pump cylinders; the length of any pump cylinder is smaller than that of the plunger device, the length of the oil pipe is smaller than that of the plunger device, and the inner diameter of the oil pipe is larger than the outer diameter of the plunger device, so that when the plunger device moves to the position of the oil pipe, a gap is formed between the plunger device and the oil pipe; the plunger device and the pump cylinder move through sealing fit, namely, abrasion is generated by the movement between the plunger and the pump cylinder, but because the abrasion is not generated between the oil pipe and the plunger device, moreover, because the length of the plunger device is greater than that of the pump cylinder and the length of the oil pipe is less than that of the plunger device, the plunger device can be in contact wear with the pump cylinder for a longer whole course in the use process, the pump barrel can be contacted and abraded with the plunger device in a short and intermittent way due to the indirect arrangement of the oil pipe, the oil well pump provided by the utility model can meet the condition that the abrasion period of the plunger device and the pump barrel is more even and the service life of the plunger device and the pump barrel is equal as proved by actual use conditions, the plunger device is utilized to prolong the sealing surface, so that the service life of the oil well pump is longer, and the technical problems of pump cylinder waste, incomplete use of the oil well pump and high cost in the prior art are solved; because a plurality of pump cylinders can be adopted, oil extraction with any stroke can be realized, and therefore oil extraction with an ultra-long stroke is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of an initial state of the anti-abrasion ultra-long oil well pump according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a first intermediate state of the anti-wear ultra-long oil well pump according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a second intermediate state of the anti-wear ultra-long oil well pump according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a pump cylinder device of an anti-abrasion ultra-long oil well pump provided in the embodiment of the present invention;
fig. 5 is a schematic structural diagram of a split state of a pump cylinder device of an anti-abrasion ultra-long oil well pump provided in the embodiment of the present invention;
fig. 6 is a schematic structural view of a plunger device of an anti-wear ultra-long oil well pump according to an embodiment of the present invention;
fig. 7 is a schematic view of a partially enlarged structure of a plunger device of an anti-wear ultra-long oil well pump according to an embodiment of the present invention;
fig. 8 is a schematic structural view of a standing valve device of an anti-wear ultra-long oil well pump according to an embodiment of the present invention.
Icon: 100-a pump barrel device; 101-a pump cylinder; 102-tubing; 103-a linker; 200-a plunger device; 201-plunger joint; 202-first section plunger; 203-a second section of plunger; 204-a first control valve; 205-a second control valve; 206-step groove; 300-fixed valve means.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that fig. 1 is a schematic structural diagram of an initial state of the anti-abrasion ultra-long oil well pump according to an embodiment of the present invention; fig. 2 is a schematic structural view of a first intermediate state of the anti-wear ultra-long oil well pump according to an embodiment of the present invention; fig. 3 is a schematic structural view of a second intermediate state of the anti-wear ultra-long oil well pump according to an embodiment of the present invention; fig. 1 provides an initial state showing that the plunger device 200 is just completely inserted into the cylinder device 100, wherein the plunger device 200 can be in contact with the cylinder 101 of the cylinder device 100 near the oil wellhead; FIG. 2 provides a first intermediate state showing the plunger assembly 200 moving along the rod path of the barrel assembly 100, wherein the end of the plunger assembly 200 moving toward the bottom of the well enters the second barrel 101 position, and the plunger assembly 200 enters the first tubing 102 position near the port; FIG. 3 provides a second intermediate condition where the plunger assembly 200 is positioned adjacent the bottom of the well at the end of the well that moves into the second tubing 102, and where the plunger assembly 200 is positioned adjacent the port at the end of the second barrel 101; in this embodiment, the number of the pump barrels 101 and the number of the oil pipes 102 can be specifically selected for different oil well depths.
As shown in fig. 1 to 8, the wear-proof ultra-long oil well pump provided in this embodiment includes: plunger device 200 and pump barrel device 100; the plunger device 200 is positioned in the pumping channel of the pump barrel device 100, and the plunger device 200 is used for moving along the pumping channel of the pump barrel device 100; the pump barrel device 100 comprises a pump barrel 101 and an oil pipe 102; the number of the pump cylinders 101 is at least two, any two pump cylinders 101 are connected through the oil pipe 102, and the plunger device 200 is in sealing fit with the pump cylinders 101; the length of any one of the pump cylinders 101 is less than that of the plunger device 200, the length of the oil pipe 102 is less than that of the plunger device 200, and the inner diameter of the oil pipe 102 is greater than the outer diameter of the plunger device 200, so that when the plunger device 200 moves to the position of the oil pipe 102, a gap is formed between the plunger device 200 and the oil pipe 102.
It should be noted that, since the overall structure of the oil well pump is cylindrical, the structures of the pump barrel device 100, the oil pumping channel of the pump barrel device 100 and the plunger device 200 are all cylindrical, and will not be described herein again; in this embodiment, the plunger channel is used as a reciprocating path along the oil pumping channel of the pump barrel device 100, and the inner wall of the oil pumping channel of the pump barrel device 100 is tightly fitted and matched with the outer wall of the plunger device 200, so that the plunger device 200 can be ensured to perform sealed reciprocating motion along the extending direction of the oil pumping channel of the pump barrel device 100; the pump cylinder device 100 is lowered into the oil well along with the oil pipe 102, and the plunger device 200 is connected to the sucker rod and then lowered to a specific position of the oil well along the pump cylinder device 100 to perform oil extraction.
In this embodiment, pump barrel devices 100 with different total lengths are provided for different depths of oil wells, and in order to meet the length requirement of the pump barrel device 100, a plurality of pump barrels 101 and a plurality of oil pipes 102 may be sequentially connected, wherein the pump barrels 101 and the oil pipes 102 are arranged at intervals, that is, any two adjacent pump barrels 101 are connected by one oil pipe 102, wherein one oil pipe 102 is used for performing anti-wear buffering between two adjacent pump barrels 101, and the length of the plunger device 200 is respectively greater than the lengths of the pump barrels 101 and the oil pipes 102, so that the plunger device 200 can perform contact wear with the pump barrels 101 in a longer whole course, and the pump barrels 101 can perform contact wear with the plunger device 200 due to the reduction in length and the buffering of the oil pipes 102 in a shorter course; with the contact wear of plunger device 200 full range and pump barrel 101 among the prior art, can improve plunger device 200's life, and then make plunger device 200 equal with the life of pump barrel 101, improved the whole rate of utilization of oil-well pump.
The super long oil-well pump of abrasionproof decreases that this embodiment provides includes: plunger device 200 and pump barrel device 100; the plunger device 200 is positioned in the pumping channel of the pump barrel device 100, and the plunger device 200 is used for moving along the pumping channel of the pump barrel device 100 so as to lift crude oil in an oil well to the ground along the oil pipe 102 by using the movement of the plunger device 200; the pump cylinder device 100 comprises a pump cylinder 101 and an oil pipe 102; the number of the pump cylinders 101 is at least two, any two pump cylinders 101 are connected through the oil pipe 102, and the plunger device 200 is in sealing fit with the pump cylinders 101; the length of any pump cylinder 101 is less than that of the plunger device 200, the length of the oil pipe 102 is less than that of the plunger device 200, and the inner diameter of the oil pipe 102 is greater than the outer diameter of the plunger device 200, so that when the plunger device 200 moves to the position of the oil pipe 102, a gap is formed between the plunger device 200 and the oil pipe 102; the plunger device 200 and the pump barrel 101 move in a sealing fit manner, that is, the movement between the plunger and the pump barrel 101 generates abrasion, but because no abrasion is generated between the oil pipe 102 and the plunger device 200, and because the length of the plunger device 200 is greater than that of the pump barrel 101, and the length of the oil pipe 102 is less than that of the plunger device 200, in the using process, the plunger device 200 can be in contact abrasion with the pump barrel 101 for a longer whole distance, and the pump barrel 101 can be in contact abrasion with the plunger device 200 for a shorter time and an interruption due to the indirect arrangement of the oil pipe 102, the practical use condition proves that the oil well pump provided by the embodiment can meet the requirement that the abrasion periods of the plunger device 200 and the pump barrel 101 are more even, the service lives of the plunger device and the pump barrel are equivalent, the sealing surface is prolonged by using the plunger device 200, so that the service life of the oil well pump is, the oil well pump is not used completely, and the cost is high; because a plurality of pump cylinders 101 can be adopted, oil extraction with any stroke can be realized, and therefore oil extraction with an ultra-long stroke can be realized.
Based on the above embodiments, further, in the preferred embodiment of the present invention, the plunger device 200 includes a plunger movable joint 201, a first section plunger 202 and a second section plunger 203; the first section plunger 202 and the second section plunger 203 are connected by a plunger joint 201, and the plunger joint 201 is used for enabling the first section plunger 202 and the second section plunger 203 to deflect relatively.
The first section plunger 202 and the second section plunger 203 are movably connected through a plunger joint 201, the plunger joint 201 serves as a connecting structure of the first section plunger 202 and the second section plunger 203, the plunger joint 201 has an automatic rotation adjusting function, the plunger joint 201 is internally provided with the movable connecting structure, and the plunger joint 201 has a tilting movement mode in the horizontal direction by using the movable connecting structure, in other words, the plunger joint 201 can enable the first section plunger 202 and the second section plunger 203 to deflect in the vertical direction.
In this embodiment, because the two adjacent pump barrels 101 are connected through the oil pipe 102, and the inner diameters of the oil pipe 102 and the pump barrels 101 are different, when the pump barrels 101 and the oil pipe 102 are installed, the pumping channel formed inside the pump barrels 101 and the oil pipe 102 has a deviation angle at the connection, and the first section of plunger 202 or the second section of plunger 203 moves to the oil pipe 102, there is a clearance fit between the first section of plunger 202 or the second section of plunger 203 and the oil pipe 102, so that a slight angle deviation occurs during the movement, in order to avoid interference when the first section of plunger 202 or the second section of plunger 203 moves to the connection, the plunger joint 201 can make the first section of plunger 202 and the second section of plunger 203 deflect along with the deviation angle, that is, the second section of plunger 203 tilts along with the deviation angle, and the first section of plunger 202 still moves along the vertical direction, when the first section of plunger 202 moves to this position, the first section of plunger 202 also deflects and fits along with the deviation angle, and at this time, the second section of plunger 203 is located at the inner wall of the oil pumping channel, and the second section of plunger 203 moves vertically again.
In the preferred embodiment of the present invention, the length of the first section of plunger 202 is greater than the length of the second section of plunger 203, and the second section of plunger 203 is located at the end of the barrel assembly 100 near the bottom of the well.
In this embodiment, the first section of plunger 202 adopts long plunger, and second section of plunger 203 adopts short plunger, and the second is as the one end that enters into the oil well moreover, and first section of plunger 202 is as the one end that is close to the oil well head, and wherein, the one end that second section of plunger 203 was kept away from to first section of plunger 202 is provided with the sucker rod screw thread, and first section of plunger 202 passes through the sucker rod screw thread and is connected with the sucker rod.
In the preferred embodiment of the present invention, the length of the pump barrel 101 is less than the length of the oil pipe 102, and the total length of the oil pipe 102 and the adjacent pump barrel 101 is greater than the length of the plunger device 200.
The first section of plunger 202 is used as a long plunger, the length of the first section of plunger 202 is greater than or equal to that of the oil pipe 102, and because the first section of plunger 202 and the second section of plunger 203 are used as the plunger device 200 to reciprocate along the oil pumping channel of the pump barrel device 100, and the oil pipe 102 and the plunger device 200 are in clearance fit, in order to ensure the sealing continuity in the oil pumping process, when the first section of plunger 202 or the second section of plunger 203 is separated from the previous pump barrel 101, the second section of plunger 203 or the first section of plunger 202 needs to be ensured to be in sealing contact with the next pump barrel 101, so that the oil driven by the plunger device 200 can be always in sealing.
In this embodiment, the cylinder devices 100 are connected in sequence by multiple groups, each group of cylinder devices 100 includes a cylinder 101 and an oil pipe 102, wherein the first section of plunger 202 is used as a long plunger to be matched and sealed with the cylinder 101 of the first group of cylinder devices 100, the sealing section is the length of the short cylinder 101, and the part of the first section of plunger 202 exceeding the cylinder 101 and the second section of plunger 203 are not matched in the oil pipe 102 in a sealing manner; when the plunger device 200 moves to the second section of plunger 203 and enters the second group of cylinder devices 100, the redundant part of the first section of plunger 202 is in the cylinder 101 of the first group of cylinder devices 100 and is matched and sealed with the cylinder 101; the synchronized second section plunger 203 is sealingly connected to the cylinders 101 of the second set of cylinder assemblies 100.
In the preferred embodiment of the present invention, one end of the second section plunger 203 is provided with a through hole, the plunger movable joint 201 is inserted into the through hole, and the side wall of the second section plunger 203 close to the through hole is provided with a stepped groove 206, one end of the plunger movable joint 201 is connected with the stepped groove 206, and the plunger movable joint 201 can deflect in the horizontal direction relative to the stepped groove 206; the end of the plunger joint 201 extending out of the second plunger segment 203 is connected with the thread of the first plunger segment 202.
In this embodiment, the plunger joint 201 is in a T-shaped structure, wherein the T-shaped end of the plunger joint 201 is clamped in the stepped groove 206 of the second section plunger 203, the outer diameter of the T-shaped end of the plunger joint 201 is smaller than the inner diameter of the stepped groove 206, and the outer diameter of the plunger joint 201 extending out of the through hole of the second section plunger 203 is also smaller than the inner diameter of the through hole, so that when the plunger joint 201 is in contact with the stepped groove 206 in the vertical direction, the plunger joint 201 has a movement space with deflection inclination in the horizontal direction; because the plunger joint 201 moves along the pumping channel of the pump barrel device 100 along with the first section plunger 202 and the second section plunger 203, when the first section plunger 202 is interfered by the inner wall of the pumping channel, the received deflection force is transmitted to the plunger joint 201, the plunger joint 201 deflects obliquely relative to the through hole of the second section plunger 203 and the stepped groove 206 according to the direction of the deflection force, and then the plunger joint 201 can adjust the relative deflection between the first section plunger 202 and the second section plunger 203 in the vertical direction, so that the first section plunger 202 and the second section plunger 203 are arranged at an included angle.
In order to make the plunger movable joint 201 more smooth when inclined and deflected and avoid the plunger movable joint 201 from colliding and interfering with the side wall of the stepped groove 206 of the second section plunger 203, in the preferred embodiment of the present invention, the stepped groove 206 of the second section plunger 203 is arc-shaped; the plunger movable joint 201 can deflect obliquely more conveniently by using the arc-shaped stepped groove 206 to contact with the plunger movable joint 201.
It should be noted that the stepped groove 206 is arranged at a right angle, the arc shape of the stepped groove 206 is located at a direct inner angle position, and the arc shape can make the plunger movable joint 201 move more smoothly, but when the plunger movable joint 201 tilts and deflects more than the arc-shaped part, the inner wall of the stepped groove 206 interferes with the plunger movable joint 201, and thus the plunger movable joint 201 can be ensured to be located in the stepped groove 206 all the time.
In the preferred embodiment of the present invention, the plunger device 200 further comprises a first control valve 204 and a second control valve 205; the first control valve 204 is positioned between the plunger joint 201 and the first section of plunger 202, and the first control valve 204 is connected with the first section of plunger 202; two second control valves 205 are provided, one second control valve 205 being connected to the end of the first section plunger 202 remote from the plunger joint 201, and the other second control valve 205 being connected to the end of the second section plunger 203 remote from the plunger joint 201.
Optionally, the first control valve 204 and the second control valve 205 belong to a valve pair of the plunger device 200, and since the valve pair belongs to the existing structure of the oil well pump, the description thereof will be omitted.
In the preferred embodiment of the present invention, a first joint 103 is disposed at an end of the oil pipe 102 away from the bottom of the oil well, one end of the pump barrel 101 is inserted into the first joint 103, and the pump barrel 101 is connected to the first joint 103 by a screw thread; the other end of the oil pipe 102 is provided with a threaded section, the other end of the pump barrel 101 is provided with a second joint, and the oil pipe 102 is inserted into the adjacent pump barrel 101 through the threaded section and is in threaded connection with the second joint of the pump barrel 101.
In this embodiment, because the pump cylinder 101 and the oil pipe 102 are vertically placed in the oil well, in order to ensure the sealing performance of the overall connection, wherein in order to ensure the sealing performance of the connection between the pump cylinder 101 and the oil pipe 102, an outer oil pipe thread is arranged at one end of the pump cylinder 101, and an inner oil pipe thread is arranged in the first joint 103 of the oil pipe 102, so that the adjacent pump cylinders 101 and the oil pipes 102 are fixedly connected through the oil pipe threads; further, the other end of the pump barrel 101 is provided with a second joint, the second joint is fixedly connected with the pump barrel 101, the adjacent oil pipe 102 is inserted into the second joint, an inner oil pipe thread is arranged in the second joint, and an outer oil pipe thread is arranged at one end of the oil pipe 102 close to the second joint, so that the adjacent pump barrel 101 and the oil pipe 102 are fixedly connected through the oil pipe thread.
In order to ensure that the pump cylinder 101 can be inserted into the inner wall of the first joint 103, in the preferred embodiment of the present invention, the end of the pump cylinder 101 inserted into the first joint 103 is tapered.
In the preferred embodiment of the present invention, the present invention further comprises a fixed valve device 300; the fixed valve device 300 is connected to the pump cylinder device 100 located at the bottom of the oil well.
In this embodiment, since the oil pipe 102 is at the vertically downward end, the fixed valve device 300 needs to be fixedly connected with the oil pipe 102 at the bottom of the oil well, the end of the fixed valve device 300 away from the bottom of the oil well is provided with an inner oil pipe thread, and the oil pipe 102 at the bottom of the oil well is fixedly connected with the fixed valve device 300 through an outer oil pipe thread.
Specifically, the plunger device 200 is placed in the oil pumping channel of the cylinder device 100 through the sucker rod, at this time, the first section of plunger 202 is in fit seal with the cylinder 101 of the first group of cylinder devices 100, the seal section is the length of the cylinder 101, and the lower part of the first section of plunger 202 and the second section of plunger 203 are not in seal fit in the oil pipe 102 of the first group of cylinder devices 100; when the plunger device 200 descends until the second plunger 203 enters the second group of cylinder devices 100, the upper part of the first plunger 202 is in the short cylinder 101 of the first group of cylinder devices 100 and is matched and sealed with the cylinder 101; the plunger device 200 continues to move downwards, the second plunger 203 enters the pump cylinder 101 of the second group of pump cylinder devices 100 to form a matching seal, the upper part of the first plunger 202 is still in the pump cylinder 101 of the first group of pump cylinder devices 100 to form a matching seal with the pump cylinder 101, and although the two pump cylinders 101 are not coaxial, the plunger joint 201 can automatically adjust the deviation of the first plunger 202 and the second plunger 203 at the moment, so that the first plunger 202 and the second plunger 203 are respectively matched with the pump cylinder 101 in the two pump cylinders 101 and can flexibly move. The plunger assembly 200 continues to travel downward, and when the first section of plunger 202 fully enters the tubing 102 of the first set of barrel assemblies 100, the second section of plunger 203 fully enters the barrel 101 of the second set of barrel assemblies 100 to form a mating seal, the seal segment being the length of the second section of plunger 203. The plunger device 200 continues to move downwards, the first section of plunger 202 enters the pump cylinder 101 of the second group of pump cylinder devices 100, and the plunger joint 201 can automatically adjust the deviation of the first section of plunger 202 and the second section of plunger 203, so that the first section of plunger 202 and the second section of plunger 203 are matched with the pump cylinder 101 in the pump cylinder 101; similarly, the plunger device 200 passes through the second and lower sets of the pump barrel devices 100 in sequence; in addition, since the ascending process of the plunger device 200 is similar to the descending process, the description thereof will not be repeated.
The anti-abrasion ultra-long oil well pump provided by the embodiment has the advantages of convenience in operation, easiness in processing, flexibility in movement, long service life, low manufacturing cost and high cost performance; the pump cylinder device 100 is formed by connecting several sets of pump cylinders 101 and oil pipes 102 through oil pipe threads, and is more convenient to use in an oil production field. The pump cylinder 101 provided by the embodiment does not need a special blank pipe as the standard pump cylinder 101, and does not need repeated straightening and special processing in the production process, so that the pump cylinder is easier to process; the first section of plunger 202 and the second section of plunger 203 are movably connected by the plunger movable joint 201, so that the plunger device 200 can smoothly pass through the pump cylinder device 100 without blocking, and the plunger device has good passing performance and flexible movement without blocking; through the length cooperation of the pump barrel 101 and the first section of plunger 202, the wear cycle between the first section of plunger 202 and the pump barrel 101 is more matched, so that the service lives of the first section of plunger 202 and the pump barrel 101 are equivalent, the sealing surface of the first section of plunger 202 is prolonged, the service life is longer, and the technical effects of low manufacturing cost and longer service life are realized.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. The utility model provides an abrasionproof decreases overlength oil-well pump which characterized in that includes: plunger means and pump barrel means;
the plunger device is positioned in the oil pumping channel of the pump barrel device and is used for moving along the oil pumping channel of the pump barrel device;
the pump cylinder device comprises a pump cylinder and an oil pipe; the number of the pump cylinders is at least two, any two pump cylinders are connected through the oil pipe, and the plunger device is in sealing fit with the pump cylinders; the length of any one pump cylinder is smaller than that of the plunger device, the length of the oil pipe is smaller than that of the plunger device, and the inner diameter of the oil pipe is larger than the outer diameter of the plunger device, so that when the plunger device moves to the oil pipe position, a gap is formed between the plunger device and the oil pipe.
2. The wear resistant ultra long pump of claim 1 wherein said plunger means comprises a plunger living joint, a first plunger segment and a second plunger segment; the first section plunger and the second section plunger are connected through the plunger hinge joint, and the plunger hinge joint is used for enabling the first section plunger and the second section plunger to deflect relatively.
3. The wear resistant pump of claim 2, wherein said first section of plunger is longer than said second section of plunger, said second section of plunger being located at an end of said barrel assembly adjacent to the bottom of the well.
4. The anti-wear ultra-long oil well pump according to claim 3, wherein a through hole is formed at one end of the second section of plunger, the plunger movable joint is inserted into the through hole, a stepped groove is formed in a side wall of the second section of plunger close to the through hole, one end of the plunger movable joint is clamped with the stepped groove, and the plunger movable joint can deflect in the horizontal direction relative to the stepped groove;
and one end of the plunger movable joint extending out of the second section of plunger is connected with the thread of the first section of plunger.
5. The anti-wear ultra-long oil well pump of claim 4, wherein the stepped groove of the second section of plunger is arc-shaped.
6. The wear resistant pump of claim 2, wherein the plunger assembly further comprises a first control valve and a second control valve;
the first control valve is positioned between the plunger joint and the first section plunger, and the first control valve is connected with the first section plunger;
the number of the second control valves is two, one second control valve is connected with one end, away from the plunger movable joint, of the first plunger section, and the other second control valve is connected with one end, away from the plunger movable joint, of the second plunger section.
7. The wear resistant pump of claim 2, wherein the length of said barrel is less than the length of said tubing, and the total length of said tubing and adjacent said barrel is greater than the length of said plunger assembly.
8. The anti-wear ultra-long oil well pump according to claim 7, wherein a first joint is arranged at one end of the oil pipe away from the bottom of the oil well, one end of the pump cylinder is inserted into the first joint, and the pump cylinder is connected with the first joint through threads;
the other end of the oil pipe is provided with a threaded section, the other end of the pump barrel is provided with a second joint, and the oil pipe is inserted into the adjacent pump barrel through the threaded section and is in threaded connection with the second joint of the pump barrel.
9. The wear-resistant ultra-long oil well pump as claimed in claim 8, wherein the pump cylinder is tapered at one end thereof inserted into the first joint.
10. The wear resistant pump of any of claims 1-9, further comprising a stationary valve assembly;
the fixed valve device is connected with the pump cylinder device positioned at the bottom of the oil well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202020198799.0U CN211623679U (en) | 2020-02-24 | 2020-02-24 | Wear-proof ultra-long oil well pump |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020198799.0U CN211623679U (en) | 2020-02-24 | 2020-02-24 | Wear-proof ultra-long oil well pump |
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| CN211623679U true CN211623679U (en) | 2020-10-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111140479A (en) * | 2020-02-24 | 2020-05-12 | 胜利油田胜机石油装备有限公司 | Wear-proof ultra-long oil well pump |
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2020
- 2020-02-24 CN CN202020198799.0U patent/CN211623679U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111140479A (en) * | 2020-02-24 | 2020-05-12 | 胜利油田胜机石油装备有限公司 | Wear-proof ultra-long oil well pump |
| CN111140479B (en) * | 2020-02-24 | 2025-02-18 | 胜利油田胜机石油装备有限公司 | Anti-wear extra-long oil pump |
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Inventor after: Lv Fengmei Inventor before: Yuan Jie Inventor before: Xue Tao Inventor before: Lv Fengmei Inventor before: Su Qingxin Inventor before: Xie Wenxian Inventor before: Guo Liqian Inventor before: Sun Zhe Inventor before: Pu Hao Inventor before: Deng Yuhua Inventor before: Wang Jun |