CN213838510U

CN213838510U - Hollow sucker rod guider

Info

Publication number: CN213838510U
Application number: CN202022863030.9U
Authority: CN
Inventors: 王力; 翟博良; 王瑞城
Original assignee: Beijing Zhongneng Wanqi Energy Technology Service Co ltd
Current assignee: Beijing Zhongneng Wanqi Energy Technology Service Co ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-07-30
Anticipated expiration: 2030-12-03

Abstract

The application provides a hollow sucker rod guider, and relates to the technical field of coal bed methane mining processes. Wherein, hollow sucker rod director includes: the ball head assembly comprises a rod body and two ball heads, the two ball heads are respectively arranged at two opposite ends of the rod body, the outer diameter of each ball head is larger than that of the rod body, and a first pipeline penetrating through the rod body and the ball heads is arranged in the ball head assembly; the number of the ball head sleeves is two, the ball head sleeves comprise a first end and a second end which are arranged oppositely, and second pipelines penetrating through the first end and the second end are formed in the ball head sleeves; the first end sleeve is arranged outside the bulb, and a first movable gap is formed between the outer surface of the bulb and the tube wall of the second pipeline so that the bulb sleeve and the bulb can rotate relative to each other by a preset angle; the second end is formed with the connector, the connector is used for being connected with hollow sucker rod.

Description

Hollow sucker rod guider

Technical Field

The application relates to the technical field of coal bed gas mining processes, in particular to a hollow sucker rod guider.

Background

Coal bed gas is developed in China as an unconventional energy source very quickly, with the continuous improvement of technology, an L-shaped horizontal well is becoming a main production well type in coal bed gas development, and most of the L-shaped horizontal wells are drained and mined by screw pumps. Because the coal bed gas well produces less water, clear water needs to be injected from the ground, and therefore the coal dust in the well is taken out of the ground. The traditional water reinjection system is to hang an aluminum-plastic pipe outside an oil pipe. However, because the trajectory inclination angle of the L-shaped horizontal well is relatively large, the externally-hung aluminum-plastic pipe is particularly easy to wear or flatten in the construction process, and some joint parts are also very easy to break, so that the operation of reinjection water is often impossible. Through improving a water injection system for many times and using the hollow sucker rod in the drainage and production of the L-shaped horizontal well, the problem that the water injection system can not normally inject water frequently is thoroughly solved, and the problem that the pump is blocked by pulverized coal is greatly reduced. However, if a hollow sucker rod is to be used to drive a screw pump, a hollow sucker rod guide is indispensable.

Disclosure of Invention

It is an object of an embodiment of the present application to provide a hollow sucker rod guide to enable a hollow sucker rod to be used to drive a screw pump.

In order to solve the above technical problem, an embodiment of the present application provides the following technical solutions:

this application first aspect provides a hollow sucker rod director, and this hollow sucker rod director includes: the ball head assembly comprises a rod body and two ball heads, the two ball heads are respectively arranged at two opposite ends of the rod body, the outer diameter of each ball head is larger than that of the rod body, and a first pipeline penetrating through the rod body and the ball heads is arranged in the ball head assembly;

the number of the ball head sleeves is two, the ball head sleeves comprise a first end and a second end which are arranged oppositely, and second pipelines penetrating through the first end and the second end are formed in the ball head sleeves;

the first end sleeve is arranged outside the bulb, and a first movable gap is formed between the outer surface of the bulb and the tube wall of the second pipeline so that the bulb sleeve and the bulb can rotate relative to each other by a preset angle;

the second end is formed with the connector, the connector is used for being connected with hollow sucker rod.

In some modified embodiments of the first aspect of the present application, the two ball head sleeves are a first ball head sleeve and a second ball head sleeve, respectively;

the hollow sucker rod guider still includes: the ball head assembly is sleeved outside the central hose through the first pipeline, the central hose comprises a third end and a fourth end which are oppositely arranged, the third end penetrates out of one end of the first pipeline, extends and is fixed in the second pipeline in the first ball head sleeve, and the fourth end penetrates out of the other end of the first pipeline;

and the locking assembly is used for fixing the fourth end in the second pipeline of the second ball head sleeve.

Specifically, the locking assembly includes:

the locking sleeve is arranged in the second pipeline, the locking sleeve is positioned between the connector and the bulb, a third pipeline and a fourth pipeline are arranged in the locking sleeve, the third pipeline is positioned at one end, close to the bulb, of the locking sleeve, the cross-sectional area of the pipe wall of the third pipeline is gradually reduced along a first direction, the connector points to the bulb in the first direction, and an internal thread is arranged on the fourth pipeline;

the locking head, be provided with the fifth pipeline in the locking head, the locking head passes through the fifth pipeline cover is located the outside of center hose, the locking head is including relative first end and the second end that sets up, the surface of first end along first direction cross sectional area reduces gradually, first end is located the locking head is close to the one end of bulb, be provided with a plurality of bar breachs on the first end, the bar breach is followed the first direction extends, be provided with the external screw thread on the second end, wherein, first end with third pipeline interference fit, the second end with fourth pipeline screw-thread fit.

Specifically, the second end part deviates from one end of the first end part and is provided with a clamping notch.

Specifically, the method further comprises the following steps: the spacer sleeve, the quantity of spacer sleeve is two, two the spacer sleeve sets up respectively in two the bulb cover in the second pipeline, be located locking Assembly with between the bulb, the spacer sleeve is established the outside of center hose, the bulb with distance between the locking Assembly is greater than the distance of spacer sleeve along first direction, wherein, first direction by the connector is directional the bulb.

Specifically, the rod body includes first rod body and second rod body, the one end of first rod body with the one end threaded connection of second rod body, the one end that the second rod body was kept away from to first rod body is provided with one the bulb, the one end that the first rod body was kept away from to the second rod body is provided with one the bulb.

Specifically, first pipeline is kept away from the one end of connector is provided with spacing arch, the bulb set up in spacing arch is close to one side of connector, spacing arch is located the surface of the body of rod, just the body of rod with be formed with the second clearance between the spacing arch.

Specifically, the ball head sleeve is provided with a plurality of limiting holes along the circumferential direction;

the ball head is provided with a plurality of limiting grooves along the circumferential direction of the ball head, and the limiting grooves correspond to the limiting holes one by one;

the ball head sleeve is further provided with a limiting key, the limiting key is fixed in the limiting hole and extends into the limiting groove, and a third movable gap is formed between the limiting key and the limiting groove.

Specifically, the preset angle is greater than or equal to 0 ° and less than or equal to 15 °.

Specifically, the connecting head is provided with an internal thread for connecting with an external thread at the end of the hollow sucker rod.

Compare in prior art, the hollow sucker rod director that this application first aspect provided, through making the deflection that produces preset angle between bulb cover and the bulb subassembly, consequently, connect in the director when hollow sucker rod, then can guarantee after getting into oil pipe that hollow sucker rod enters into the oblique section of making of L type horizontal well smoothly, in addition, the hollow sucker rod director that this application provided is hollow structure, be provided with first pipeline in the bulb subassembly promptly, and be provided with the second pipeline in the bulb cover, first pipeline passes through the water delivery passageway looks UNICOM in second pipeline and the hollow sucker rod, consequently, the director can be used for carrying production water, production water passes through in director and hollow sucker rod.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present application will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present application are illustrated by way of example and not by way of limitation in the figures of the accompanying drawings and in which like reference numerals refer to similar or corresponding parts and in which:

FIG. 1 is a schematic diagram illustrating the structure of a hollow sucker rod guide provided by an embodiment of the present application;

FIG. 2 is a schematic diagram illustrating the structure of a ball head assembly of a hollow sucker rod guide provided by an embodiment of the present application;

FIG. 3 schematically illustrates another schematic structural view of a ball head assembly of a hollow sucker rod guide provided by an embodiment of the present application;

FIG. 4 schematically illustrates yet another structural schematic of the ball head assembly of the hollow sucker rod guide provided by the embodiments of the present application;

FIG. 5 is a schematic diagram illustrating a ball end cover structure of a hollow sucker rod guide according to an embodiment of the present application;

FIG. 6 is a schematic diagram illustrating the structure of the locking sleeve of the hollow sucker rod guide provided by the embodiment of the present application;

FIG. 7 is a schematic diagram illustrating the structure of the locking head of the hollow sucker rod guide according to the embodiment of the present application;

FIG. 8 is another schematic structural view of the locking head of the hollow sucker rod guide provided in the embodiments of the present application;

FIG. 9 is a schematic view of another embodiment of the locking head of the hollow sucker rod guide provided by the present application;

FIG. 10 schematically illustrates a schematic structural view of a spacer sleeve of a hollow sucker rod guide provided by an embodiment of the present application;

the reference numbers illustrate:

ball joint subassembly 1, the body of rod 11, first body of rod 111, the second body of rod 112, bulb 12, first bulb 121, second bulb 122, spacing groove 123, first pipeline 13, bulb cover 2, connector 21, first bulb cover 22, second bulb cover 23, spacing arch 24, spacing hole 25, second pipeline 26, locking Assembly 3, lock sleeve 31, third pipeline 311, fourth pipeline 312, lock head 32, first end 321, bar breach 3211, second end 322, joint breach 3221, spacer sleeve 4.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which this application belongs.

The present application provides in a first aspect a hollow sucker rod guide, as shown in fig. 1 to 10, comprising: the ball head assembly 1 comprises a rod body 11 and two ball heads 12, the two ball heads 12 are respectively arranged at two opposite ends of the rod body 11, the outer diameter of each ball head 12 is larger than that of the rod body 11, and a first pipeline 13 penetrating through the rod body 11 and the ball heads 12 is arranged in the ball head assembly 1; the number of the ball head sleeves 2 is two, each ball head sleeve 2 comprises a first end and a second end which are arranged oppositely, and a second pipeline 26 penetrating through the first end and the second end is formed in each ball head sleeve 2; the first end sleeve is arranged outside the ball head 12, and a first movable gap is formed between the outer surface of the ball head 12 and the pipe wall of the second pipeline 26 so that the ball head sleeve 2 and the ball head 12 can rotate relative to each other by a preset angle; the second end is formed with connector 21, connector 21 is used for being connected with hollow sucker rod.

Wherein, as shown in fig. 1 and fig. 2, the circumference side of bulb 12 is the arc, the body of rod 11 is the cylinder type, bulb cover 2 can overlap the surface at bulb 12, and be formed with first free gap between the pipe wall of bulb 12 and the inside second pipeline 26 of bulb cover 2, therefore, swing joint between bulb 12 and the bulb cover 2, and can rotate preset angle relatively between bulb 12 and the bulb cover 2, the second end that bulb cover 2 kept away from bulb assembly 1 is provided with connector 21, be connected with the hollow sucker rod when connector 21, the inside water channel of hollow sucker rod can be UNICOM with second pipeline 26.

Specifically, in an L-shaped horizontal well, if a sucker rod is to be used to drive a screw pump, the sucker rod guide and the sucker rod may be arranged at an interval, and the sucker rod at one end is connected to a rotor of the screw pump. The hollow sucker rod is of a hollow structure, a water delivery channel is arranged in the hollow sucker rod, and clear water can be delivered through the water delivery channel. And the hollow sucker rod guider is internally provided with a first pipeline 13 and a second pipeline 26, the first pipeline 13 is communicated with the second pipeline 26, when the connector 21 is connected with the hollow sucker rod, the water delivery channel of the hollow sucker rod can be communicated with the second pipeline 26, at the moment, the first pipeline 13, the second pipeline 26 are communicated with the water delivery channel, and the first pipeline 13 and the second pipeline 26 can be used for water delivery together with the water delivery channel. Wherein, because hollow sucker rod can't buckle, can relative rotation preset the angle between bulb cover 2 and the bulb subassembly 1 of the hollow sucker rod director that provides in this application, be connected through hollow sucker rod director between two adjacent hollow sucker rods, and then can relative rotation between the two, the hollow sucker rod of being convenient for passes the section of making one's angle and enters into the horizontal segment. The hollow sucker rod director that this embodiment provided can carry out the omnidirectional skew, has satisfied the skew requirement that hollow sucker rod made the slope section at L type horizontal well, and hollow sucker rod in this application is hollow structure simultaneously, not only can supply production water to pass through, and it compares in non-hollow director, and torsion resistance increase has reduced taking off of director disconnected.

In some modified embodiments of the first aspect of the present application, as shown in fig. 1, the two ball sockets 2 are a first ball socket 22 and a second ball socket 23; the hollow sucker rod guider still includes: the ball head assembly 1 is sleeved outside the central hose through the first pipeline 13, the central hose comprises a third end and a fourth end which are oppositely arranged, the third end penetrates out of one end of the first pipeline 13, extends and is fixed in the second pipeline 26 in the first ball head sleeve 22, and the fourth end penetrates out of the other end of the first pipeline 13; a locking assembly 3, said locking assembly 3 being configured to fix said fourth end in said second pipe 26 of said second bulb sleeve 23.

Wherein, the central hose can be a high-pressure hose of 25 MPa. The central hose portion is located in the first pipe 13, and a third end of the central hose portion can be fixed in the first bulb sleeve 22 by a fixing component, and the third end and the first bulb sleeve 22 can be non-detachably connected. And the fourth end is fixed in the second pipeline 26 through the locking component 3, wherein, the locking component 3 is detachably connected with the second bulb cover 23, and the third end of the central hose can also be detachably fixed in the first bulb cover 22 through the locking component 3. The inside transfer passage that is provided with of center hose, when the center hose is fixed in bulb cover 2, hollow sucker rod connects on connector 21 simultaneously, hollow sucker rod's water delivery passageway can with the transfer passage looks UNICOM in the center hose, at this moment, transfer passage is used for carrying production water. Wherein, the center hose is made by corrosion resistant material, and bulb cover 2 and ball head subassembly 1 are made by metal material, carry the production water by the center hose and can avoid hollow sucker rod director to be corroded, influence the life of hollow sucker rod director.

Specifically, as shown in fig. 1, 6 to 8, the locking assembly 3 includes: the locking sleeve 31 is arranged in the second pipeline 26, the locking sleeve 31 is located between the connector 21 and the ball head 12, a third pipeline 311 and a fourth pipeline 312 are arranged in the locking sleeve 31, the third pipeline 311 is located at one end, close to the ball head 12, of the locking sleeve 31, the cross-sectional area of the pipe wall of the third pipeline 311 is gradually reduced along a first direction, the connector 21 points to the ball head 12 in the first direction, and internal threads are arranged on the fourth pipeline 312; the locking head 32, be provided with the fifth pipeline in the locking head 32, the locking head 32 passes through the fifth pipeline cover is located the outside of center hose, the locking head 32 includes relative first end 321 and the second end 322 that sets up, the surface of first end 321 along first direction cross sectional area reduces gradually, first end 321 is located the locking head 32 is close to the one end of bulb 12, be provided with a plurality of bar breachs 3211 on the first end 321, bar breach 3211 is followed the first direction extends, be provided with the external screw thread on the second end 322, wherein, first end 321 with third pipeline 311 interference fit, second end 322 with fourth pipeline 312 screw-thread fit.

As shown in fig. 6 and 7, the direction indicated by the arrow a is a first direction, the first direction is directed toward the ball head 12 along the connecting head 21, and the first direction and the axis of the ball head sleeve 2 can satisfy a parallel condition. The cross-sectional area of the tube wall of the third tube 311 is gradually decreased along the first direction, and the cross-section of the third tube 311 may be circular, in which case the inner diameter of the third tube 311 is gradually decreased along the first direction. While the outer surface of the first end portion 321 has a cross-sectional area that gradually decreases along the first direction, the cross-sectional area of the outer surface of the first end portion 321 may be circular, that is, the outer diameter of the first end portion 321 gradually decreases along the first direction. The locking sleeve 31 and the locking head 32 are made of metal material, one end of the bar-shaped notch 3211 on the locking head 32 extends to the end of the first end 321 departing from the second end 322, and an opening is formed at the end of the first end 321 departing from the second end 322, therefore, the bar-shaped notch 3211 is not a closed notch in the application, and the bar-shaped notches 3211 separate the first end 321 into a plurality of pressure pieces. Wherein the inner diameter of the third pipe 311 is smaller than the outer diameter of the first end 321. When fixing the center hose, the locking sleeve 31 may be first welded in the second pipe 26, so that the locking sleeve 31 is fixedly connected to the head sleeve 2, and the two are relatively fixed. Then establish the lock sleeve 31 cover at the fourth end, and gradually with in the lock sleeve 31 is along first direction screw in lock sleeve 31 gradually, the external screw thread of second tip 322 cooperatees with the internal thread on the fourth pipeline 312, along with lock sleeve 31 is close to bulb 12 gradually, first tip 321 also enters into third pipeline 311 gradually, because the size of first tip 321 is greater than the size of third pipeline 311, consequently along with first tip 321 gets into in the third pipeline 311, the first tip 321 can be extruded gradually to the pipe wall of third pipeline 311, make two adjacent pressure pieces approach gradually, with the extrusion of bar breach 3211, make the size of bar breach 3211 reduce, and simultaneously, a plurality of pressure pieces are close to the central hose to the axis of locking head 32 gradually and extrude, and then fix the central hose in locking head 32 gradually. The bar-shaped gap 3211 may extend from the first end 321 to the second end 322, which is not particularly limited herein. The number of the strip-shaped notches 3211 can be 6, and the notches are uniformly arranged along the circumferential direction of the locking head 32.

Specifically, as shown in fig. 1, 7 and 9, a clamping notch 3221 is disposed at an end of the second end portion 322 facing away from the first end portion 321.

The number of the clamping notches 3221 may be two, the two clamping notches 3221 are arranged oppositely, the clamping notches 3221 may be clamped with other clamps, and a user may screw the locking head 32 into the locking sleeve 31 by operating the clamps.

Specifically, as shown in fig. 1 and 10, the method further includes: spacer 4, the quantity of spacer 4 is two, two spacer 4 sets up respectively in two bulb cover 2 in the second pipeline 26, be located locking component 3 with between bulb 12, spacer 4 cover is established the outside of center hose, bulb 12 with distance between the locking component 3 is greater than the distance of spacer 4 along first direction, wherein, first direction by connector 21 is directional bulb 12.

Wherein, a preset distance is formed between the locking component 3 and the ball head 12, so that the locking component 3 is prevented from blocking the rotation of the ball head 12. Wherein the spacer 4 is arranged between the ball head 12 and the locking assembly 3. The distance between the locking component 3 and the ball head 12 in this embodiment is greater than the size of the locking component 3 along the first direction, so that the locking component 3 cannot press the spacer 4 onto the ball head 12, and further the spacer 4 can be prevented from blocking the rotation of the ball head 12. Wherein, be provided with the sixth pipeline in the spacer 4, two spacer 4 are first spacer 4 and second spacer 4 respectively, and first spacer 4 sets up in the second pipeline 26 of first bulb cover 22, and second spacer 4 sets up in the second pipeline 26 of second bulb cover 23. In this embodiment, be provided with spacer 4 between locking Assembly 3 and bulb 12, when producing relative rotation between spacer 4 and bulb 12, the center hose that is located spacer 4 is the first section, and the center hose that is located the first pipeline 13 of bulb subassembly 1 is the second section, and the junction of first section and second section takes place to buckle, provides the space of buckling for the buckling of center hose through setting up spacer 4, avoids between locking Assembly 3 and the bulb 12 the distance too near and lead to the unable bending of center hose.

Specifically, as shown in fig. 2 and 3, the shaft 11 includes a first shaft 111 and a second shaft 112, one end of the first shaft 111 is in threaded connection with one end of the second shaft 112, one end of the first shaft 111, which is far away from the second shaft 112, is provided with one of the ball heads 12, and one end of the second shaft 112, which is far away from the first shaft 111, is provided with one of the ball heads 12.

The two bulbs 12 are a first bulb 121 and a second bulb 122, respectively, wherein the first bulb 121 is disposed at one end of the first rod 111 far away from the second rod 112, and is disposed in the first bulb sleeve 22, and the second bulb 122 is disposed at the first end of the second rod 112 far away from the first rod 111, and is disposed in the second bulb sleeve 23, which can be connected by a thread between the first rod 111 and the second rod 112, i.e., one of the first rod 111 and the second rod 112 is disposed with an internal thread, and the other is disposed with an external thread, which are connected by a thread fit.

Specifically, as shown in fig. 5, first pipeline 13 is kept away from the one end of connector 21 is provided with spacing arch 24, bulb 12 set up in spacing arch 24 is close to one side of connector 21, spacing arch 24 is located the surface of the body of rod 11, just the body of rod 11 with be formed with the second clearance between the spacing arch 24.

Wherein, the first rod 111 and the first ball head 121 form a first ball head piece, the second rod 112 and the second ball head 122 form a second ball head piece, when assembling the hollow sucker rod guider, the first ball head sleeve 22 can be firstly sleeved outside the first ball head 121 of the first ball head piece, and the second ball head sleeve is arranged outside the second ball head 122 of the second ball head piece, the specific operation process is as follows, taking the second ball head piece as an example, one end of the second rod 112 far away from the second ball head 122 enters the second pipeline 26 at one end of the second ball head sleeve 23 far away from the limiting protrusion 24, the second ball head 122 is pushed to make the second ball head 122 gradually approach the limiting protrusion 24, because the limiting protrusion 24 is arranged in the second pipeline 26, the second ball head 122 cannot slide out of the second pipeline 26. At this moment, the limiting protrusion 24 is located on the outer surface of the rod body 11, and a second movable gap is formed between the rod body 11 and the limiting protrusion 24, so that the limiting protrusion 24 cannot collide with the outer surface of the rod body 11, thereby ensuring that the ball head assembly 1 can rotate relative to the ball head sleeve 2, and preventing the limiting protrusion 24 from blocking the ball head assembly 1 from rotating. The first ball head sleeve 22 is sleeved outside the first ball head 121, the second ball head sleeve 23 is sleeved outside the second ball head 122, so that the first rod 111 is connected with the second rod 112, and then the spacer sleeve 4, the locking sleeve 31 and the locking head 32 are sequentially installed. Wherein, the installation about the center hose can be by following two kinds of modes, the first, set up back in first bulb cover 22 at first spacer 4, fix the third end of center hose in first bulb cover 22, and be fixed in first bulb cover 22 through fixed subassembly in, the fourth end of center hose passes first spacer 4, bulb subassembly 1 and second spacer 4 in proper order, fixes the fourth end in second bulb cover 23 through locking Assembly 3 at last. The second is in first spacer 4 sets up in first bulb cover 22 to and second spacer 4 sets up in second bulb cover 23 back, wears to establish two bulb cover 2 and bulb subassembly 1 with the center hose in, then will fix the third end of center hose in first bulb cover 22 respectively through two locking Assembly 3, and fix the fourth end in second bulb cover 23.

Specifically, as shown in fig. 4 and 5, the ball head sleeve 2 is provided with a plurality of limiting holes 25 along the circumferential direction thereof; the ball head 12 is provided with a plurality of limiting grooves 123 along the circumferential direction, and the limiting grooves 123 correspond to the limiting holes 25 one by one; the ball head sleeve 2 is further provided with a limiting key, the limiting key is fixed in the limiting hole 25 and extends into the limiting groove 123, and a third movable gap is formed between the limiting key and the limiting groove 123.

Wherein, after bulb 12 installed in bulb cover 2, spacing groove 123 is corresponding with spacing hole 25, then welds spacing key in spacing hole 25, and at this moment, spacing key can the joint in spacing groove 123, and is formed with the third clearance between spacing key and the spacing groove 123 to guarantee to form between bulb 12 and the bulb cover 2 and produce relative rotation. Wherein, when the rotor of screw pump drove hollow sucker rod and rotates, hollow sucker rod can drive bulb cover 2 and rotate, and can make bulb cover 2 drive bulb subassembly 1 through spacing key-type connection between bulb cover 2 and bulb 12 and rotate, plays the effect of transmission moment of torsion. The number of the limiting grooves 123 is 4, and the limiting grooves are uniformly arranged along the circumferential direction of the ball head 12. The number of the corresponding limiting holes 25 is four, and the limiting holes are uniformly arranged along the circumferential direction of the ball head sleeve 2.

In the working process, the rotating angle between the ball head assembly 1 and the ball head sleeve 2 is usually larger than 7 degrees and smaller than 8 degrees, and the preset angle is larger than 0 degree and smaller than 15 degrees, so that the requirement of the rotating angle between the ball head assembly 1 and the ball head sleeve 2 can be met.

Specifically, as shown in fig. 1, the connector 21 is provided with an internal thread for connecting with an external thread at the end of the hollow sucker rod.

Wherein, the outside at hollow sucker rod both ends is provided with the external screw thread, and behind hollow sucker rod installed in connector 21, the tip of hollow sucker rod is contradicted and is kept away from the one end of bulb 12 at lock sleeve 31. At the moment, the water delivery channel on the hollow sucker rod is communicated with the delivery channel in the central hose.

The hollow sucker rod guider provided by the embodiment can be flexibly bent at the deflecting section of the horizontal well, and the eccentric wear of the sucker rod on an oil pipe is avoided. In addition, in the prior art, the sucker rod is of a non-hollow structure, the guider is also of a non-hollow structure, the production water passes through the annular space between the sucker rod and the oil pipe, and the production water directly passes through the hollow sucker rod and the sucker rod guider in the application, and the cross-sectional area of the water delivery channel in the hollow sucker rod and the delivery channel of the central hose in the hollow sucker rod guider is smaller than that of the annular space between the sucker rod and the oil pipe in the prior art, so that the water pressure, the water speed and the like in the water delivery channel are larger than those in the prior art under the condition of the same water quantity, and therefore, after the hollow sucker rod guider and the hollow sucker rod provided by the application are used, the capacity of carrying the pulverized coal and the coal blocks by the production water is increased, and the possibility of carrying the pulverized coal out of the production water on the ground can be further improved. Besides, because buggy and coal cinder are taken out ground in the annular space between sucker rod and oil pipe among the prior art, consequently the coal cinder of big granule blocks easily between sucker rod and oil pipe, in case the coal cinder is opened and will cause the card pump between sucker rod and oil pipe, need carry out the operation, and in this application because buggy and coal cinder etc. are taken away in hollow sucker rod and hollow sucker rod director inside, can not wander away between sucker rod and oil pipe, consequently can avoid blocking the pump, and then can reduce the operation number of times, reduce the shut-in time, the gas production volume has been increased, the exploitation cost has been saved. In addition, the hollow sucker rod guider provided by the embodiment can be made of stainless steel materials, so that the embrittlement effect of hydrogen sulfide on the sucker rod guider is greatly reduced, and the service life of the hollow sucker rod guider is prolonged.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A hollow sucker rod guider, which is characterized by comprising:

the ball head assembly comprises a rod body and two ball heads, the two ball heads are respectively arranged at two opposite ends of the rod body, the outer diameter of each ball head is larger than that of the rod body, and a first pipeline penetrating through the rod body and the ball heads is arranged in the ball head assembly;

2. The hollow sucker rod guide of claim 1,

the two ball head sleeves are respectively a first ball head sleeve and a second ball head sleeve;

3. The hollow sucker rod guide of claim 2,

the locking assembly includes:

4. The hollow sucker rod guide of claim 3, wherein the end of the second end portion facing away from the first end portion is provided with a snap notch.

5. The hollow sucker rod guide of claim 2, further comprising: the spacer sleeve, the quantity of spacer sleeve is two, two the spacer sleeve sets up respectively in two the bulb cover in the second pipeline, be located locking Assembly with between the bulb, the spacer sleeve is established the outside of center hose, the bulb with distance between the locking Assembly is greater than the distance of spacer sleeve along first direction, wherein, first direction by the connector is directional the bulb.

6. The hollow sucker rod guide of claim 1,

the club body comprises a first club body and a second club body, one end of the first club body is in threaded connection with one end of the second club body, one end, far away from the second club body, of the first club body is provided with the bulb, and one end, far away from the first club body, of the second club body is provided with the bulb.

7. The hollow sucker rod guide of claim 1,

the first pipeline is kept away from one end of the connector is provided with a limiting protrusion, the ball head is arranged on one side, close to the connector, of the limiting protrusion, the limiting protrusion is located on the outer surface of the rod body, and a second movable gap is formed between the rod body and the limiting protrusion.

8. The hollow sucker rod guide of claim 1,

the ball head sleeve is provided with a plurality of limiting holes along the circumferential direction;

9. The hollow sucker rod guide of claim 1,

the preset angle is greater than or equal to 0 degrees and less than or equal to 15 degrees.

10. The hollow sucker rod guide of claim 1,

the connecting head is provided with an internal thread which is used for being connected with an external thread at the end part of the hollow sucker rod.