CN211230306U - Pen type well-flushing joint - Google Patents
Pen type well-flushing joint Download PDFInfo
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- CN211230306U CN211230306U CN201921740203.9U CN201921740203U CN211230306U CN 211230306 U CN211230306 U CN 211230306U CN 201921740203 U CN201921740203 U CN 201921740203U CN 211230306 U CN211230306 U CN 211230306U
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Abstract
The utility model provides a pen-type washable well joint, which comprises an inner barrel, an outer barrel and a driving component, wherein the side wall of the inner barrel is provided with a well washing port, the outside of the inner barrel is sleeved with a bush, and the outer surface of the bush is provided with a limit lug; the outer barrel is movably sleeved outside the inner barrel, and the inner surface of the outer barrel is connected with an upper limiting piece and a lower limiting piece at intervals; the driving assembly is sleeved outside the inner barrel and located between the upper limiting piece and the lower limiting piece, the driving assembly comprises a track pipe and a reversing pipe, a track is arranged on the track pipe and comprises at least one long groove and at least one short groove which are arranged in parallel along the axial direction of the track pipe, the limiting lug is arranged in the long groove in a sliding mode, a convex edge is arranged on the outer surface of the reversing pipe and arranged in the track in a sliding mode, and the lower limiting piece blocks the well washing port in the state that the convex edge is located in the short groove; and the washing well mouth is communicated with the outside in a state that the lower end of the convex ridge is positioned at the lower part of the long groove. The utility model discloses can also carry out the well-flushing operation under the condition of not playing out oil pipe.
Description
Technical Field
The utility model relates to an oil development technical field, in particular to but pen-type well-flushing connects.
Background
At present, for a part of slightly sand producing wells, sand prevention is often carried out in a mode of suspending a sand anchor under a pump, but through production for a period of time, the conditions of sand blocking of the pump and sand burying of an oil layer can also occur, an oil pipe needs to be lifted at the moment, a well washing pipe column is put into the well washing pipe column again to wash the well, then an oil well pump is put into the well washing pipe column again, the operation procedures are complex, and the construction cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can carry out the pen type washable well joint of well-flushing operation under the condition of not playing oil pipe.
In order to achieve the above object, the utility model provides a pen-type washable well joint, it includes:
the side wall of the inner barrel is provided with a well washing port, the outer part of the inner barrel is sleeved with a lining, the lining is positioned above the well washing port, and the outer surface of the lining is provided with a limiting lug;
the outer cylinder is movably sleeved outside the inner cylinder, the inner surface of the outer cylinder is connected with an upper limiting piece and a lower limiting piece at intervals, and the inner surface of the upper limiting piece and the inner surface of the lower limiting piece are both attached to the peripheral surface of the inner cylinder;
the driving assembly is sleeved outside the inner barrel and located between the upper limiting piece and the lower limiting piece, the driving assembly comprises a track pipe and a reversing pipe, the lower end of the track pipe can abut against the lower limiting piece, a track is arranged on the track pipe, the track comprises at least one long groove and at least one short groove which are arranged in parallel along the axial direction of the track pipe, the upper end of the long groove is flush with and communicated with the upper end of the short groove, the limiting lug is slidably arranged in the long groove, the upper end of the reversing pipe is connected with the upper limiting piece through an elastic piece, the lower end of the reversing pipe abuts against the upper end of the bushing, a convex edge is arranged on the outer surface of the reversing pipe, the convex edge is slidably arranged in the track, and the lower limiting piece blocks the well washing port in a state that the convex edge is located in the short groove; and under the condition that the lower end of the convex ridge is positioned at the lower part of the elongated slot, the lower limiting piece is positioned above the well washing port, and the well washing port is communicated with the outside.
The pen-type washable well joint as described above, wherein said lower stopper is an annular projection provided to protrude from the inner surface of the lower end of said outer barrel.
The pen-type washable well joint comprises a lower limiting piece, a lower limiting piece and a plurality of sealing rings, wherein the lower limiting piece is provided with a plurality of sealing rings, and the sealing rings are arranged on the upper side and the lower side of the well washing port respectively.
The pen-type washable well joint as described above, wherein the upper limiting member is a stopper ring, the outer circumferential surface of the stopper ring is provided with external threads, the inner surface of the upper portion of the outer cylinder is provided with internal threads, and the stopper ring is connected to the outer cylinder by the threaded fit of the external threads and the internal threads.
The pen-type washable well joint comprises a reversing pipe, a lining and a plurality of convex teeth, wherein the lower end of the reversing pipe is circumferentially provided with the plurality of convex teeth, the upper end of the lining is provided with a plurality of grooves corresponding to the convex teeth, and the lining is connected with the reversing pipe through the clamping fit of the corresponding convex teeth and the grooves.
The pen-type washable well joint as described above, wherein a plurality of long grooves and a plurality of short grooves are provided along an axial direction of the track tube, and the plurality of long grooves and the plurality of short grooves are alternately arranged along a circumferential direction of the track tube.
The pen-type washable well joint as described above, wherein a first guiding inclined plane for the rib to slide in is provided on a side wall of the long groove, and a second guiding inclined plane for the rib to slide in is provided on a side wall of the short groove.
A pen-type washable well joint as described above, wherein said resilient member is a spring.
The pen-type washable well joint as described above, wherein the outer peripheral surface of the inner barrel is provided with a ring groove, the ring groove is located below the bushing, and the well-flushing port is located in the ring groove.
A pen-type washable well fitting as described above, wherein the liner is of unitary construction with the inner barrel.
Compared with the prior art, the utility model has the advantages as follows:
the pen-type washable well joint of the utility model can open or close the well washing port by lifting or lowering the pipe column through the driving component, thereby realizing that the well washing channel is opened for well washing operation under the condition of not lifting the oil pipe, and the well washing channel is closed after the well washing process is finished;
the utility model discloses a pen type washable well connects through set up two sets of sealing washers on locating part down, can prevent effectively that the washing well head from being buried by sand.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:
FIG. 1 is a schematic cross-sectional view of a pen-type washable well joint of the present invention;
FIG. 2 is a schematic perspective view of the pen-type washable well joint of FIG. 1 with the outer barrel removed;
FIG. 3 is a schematic perspective view of the inner barrel of the pen-type washable well head shown in FIG. 1;
FIG. 4 is a schematic perspective view of the trace tube of the pen-type washable well joint shown in FIG. 1;
figure 5 is a schematic perspective view of a reversing tube in the pen-type washable well joint shown in figure 1.
The reference numbers illustrate:
1. an inner barrel; 11. a ring groove; 111. washing the well mouth; 12. a bushing; 121. a limiting bump; 122. a groove;
2. an outer cylinder; 21. an upper limiting member; 22. a lower retainer; 221. a seal ring;
3. a drive assembly;
31. a trajectory pipe; 311. a long groove; 3111. a first guide slope; 312. a short slot; 3121. a second guide slope;
32. a reversing tube; 321. a rib; 322. a convex tooth;
33. an elastic member.
Detailed Description
In order to clearly understand the technical solution, purpose and effect of the present invention, the detailed embodiments of the present invention will be described with reference to the accompanying drawings. Where adjective or adverbial modifiers "upper" and "lower", "inner" and "outer" are used merely to facilitate relative reference between groups of terms, and do not describe any particular directional limitation on the modified terms. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1 and 2, the utility model provides a pen-type washable well joint, it includes inner tube 1, urceolus 2 and drive assembly 3, wherein:
as shown in fig. 3, a well-flushing port 111 is provided on a side wall of the inner cylinder 1, specifically, the inner cylinder 1 is a hollow tubular structure with an open upper end and a closed lower end, of course, the inner cylinder 1 may also be a hollow tubular structure with open two ends, but a plug needs to be connected to the lower end of the inner cylinder 1, a well-flushing channel is formed inside the inner cylinder 1, the well-flushing port 111 is located at the lower part of the inner cylinder 1, and a plurality of well-flushing ports 111 are provided at equal intervals along the circumferential direction of the inner cylinder 1, the well-flushing ports 111 form an outlet of the well-flushing channel so that well-flushing liquid can uniformly flow out, a bushing 12 is sleeved outside the inner cylinder 1, no relative movement exists between the bushing 12 and the inner cylinder 1, the bushing 12 is located above the well-flushing port 111, and;
as shown in fig. 1, the outer cylinder 2 is movably sleeved outside the inner cylinder 1, the inner surface of the outer cylinder 2 is connected with an upper stopper 21 and a lower stopper 22 at intervals, the inner surface of the upper stopper 21 and the inner surface of the lower stopper 22 are both attached to the outer peripheral surface of the inner cylinder 1, that is, the inner surface of the outer cylinder 2, the upper stopper 21, the lower stopper 22 and the outer surface of the inner cylinder 1 surround to form an annular accommodating space;
the driving assembly 3 is sleeved outside the inner cylinder 1 and located between the upper limiting member 21 and the lower limiting member 22, that is, the driving assembly 3 is located in the accommodating space, the driving assembly 3 includes a track tube 31 and a reversing tube 32, specifically, the outer diameter of the reversing tube 32 is substantially the same as the outer diameter of the bushing 12, the inner diameter of the track tube 31 is slightly larger than the outer diameter of the reversing tube 32, so that the upper portion of the track tube 31 can be sleeved outside the reversing tube 32, the lower end of the track tube 31 can abut against the lower limiting member 22, that is, the track tube 31 can limit the upward movement of the lower limiting member 22, the lower limiting member 22 can limit the upward movement of the track tube 31, a track is arranged on the track tube 31, as shown in fig. 2 and 4, the track includes at least one long groove 311 and at least one short groove 312 which are arranged in parallel along the axial direction of the track tube 31, the upper end of the long groove 311 is flush with, specifically, long slots 311 and short slots 312 are disposed at an upper end of track pipe 31 at intervals and extend downward in parallel along the axial direction of track pipe 31, the extending length of the long groove 311 is longer than that of the short groove 312, the limiting lug 121 is slidably disposed in the long groove 311, the limiting lug 121 can limit the distance that the track tube 31 moves upward relative to the inner cylinder 1, the upper end of the reversing tube 32 is connected with the upper limiting member 21 through the elastic member 33, the lower end of the reversing tube 32 abuts against the upper end of the bushing 12, the outer surface of the reversing tube 32 is provided with a rib 321, specifically, the rib 321 extends along the axial direction of the reversing tube 32, the length of the rib 321 is longer than that of the short groove 312 and shorter than that of the long groove 311, the rib 321 is slidably disposed in the track, that is, the rib 321 can reciprocate between the long groove 311 and the short groove 312, and in a state where the rib 321 is located in the short groove 312, the lower limiting piece 22 blocks the well washing opening 111, so that the well washing opening 111 is blocked and closed; in a state where the lower end of the rib 321 is positioned below the long groove 311, the lower stopper 22 is positioned above the flushing port 111, and the flushing port 111 is opened to communicate with the wellbore, thereby enabling flushing work.
When in use, the upper end of the outer cylinder 2 of the pen-type washable well joint is connected with the lower end of the sand anchor under the oil well pump to form a pipe column, when in use, the convex rib 321 is positioned in the short groove 312, and at the moment, the lower limiting piece 22 is in a state of plugging the well washing port 111;
when the well washing operation is needed, the pipe column is lowered, the lower end face of the inner cylinder 1 is in contact with a sand surface or a well bottom, the pipe column is lowered continuously, at the moment, the inner cylinder 1 is abutted against the sand surface or the well bottom cannot move downwards continuously, the outer cylinder 2 moves downwards relative to the inner cylinder 1 under the action of the pressure of the pipe column, the upper limiting part 21 and the lower limiting part 22 are driven to move downwards synchronously by the movement of the outer cylinder 2, the track pipe 31 is not limited by the movement of the lower limiting part 22 and moves downwards along the inner cylinder 1 under the action of self gravity, in the moving process of the track pipe 31, the lower end of the track pipe 31 is always abutted against the lower limiting part 22, and the limiting lug 121 can guide the movement of the track pipe 31, so that the convex edge 321 smoothly moves out of the short groove 312, and then the pipe column is rotated, so that the; because the lower end of the reversing pipe 32 is abutted to the upper end of the bush 12, and there is no relative movement tendency between the bush 12 and the inner cylinder 1, the reversing pipe 32 will not move downward relative to the inner cylinder 1, and the movement of the upper limiting member 21 will press the elastic member 33, when the outer cylinder 2 will not move downward relative to the inner cylinder 1 under the action of the elastic member 33, the column will be lifted up, the outer cylinder 2 will move upward relative to the inner cylinder 1 along with the column, the movement of the outer cylinder 2 will drive the upper limiting member 21 and the lower limiting member 22 to move upward synchronously, the upward movement of the lower limiting member 22 will push the track pipe 31 to move upward along the inner cylinder 1, the movement of the track pipe 31 will make the convex edge 321 smoothly insert into the long groove 311, when the lower end of the long groove 311 is abutted to the limiting projection 121, the track pipe 31 will not move upward under the limiting action of the limiting projection 121, at this time, the length of the track pipe 31 sandwiched between the, the lower limiting piece 22 is still positioned above the well washing port 111 after abutting against the track pipe 31, so that the well washing port 111 is opened to communicate with the shaft, and after the upward lifting force is lost, the track pipe 31 cannot move upwards relative to the inner cylinder 1 under the limitation of the track pipe 31 and cannot move downwards relative to the inner cylinder 1 under the action of the elastic piece 33, so that the well washing port 111 is kept in an opened state, namely the state shown in fig. 1 and 2;
when the well washing operation is completed, the tubular column is lowered again, the upper limiting piece 21 and the lower limiting piece 22 are driven to synchronously move downwards by the movement of the outer barrel 2, the lower limiting piece moves to enable the track pipe 31 to lose the limitation and move downwards along the inner barrel 1 under the action of self gravity, in the moving process of the track pipe 31, the lower end of the track pipe 31 is always abutted to the lower limiting piece 22, the limiting lug 121 can guide the movement of the track pipe 31, so that the convex ribs 321 can be smoothly moved out of the long grooves 311, and then the tubular column is rotated to enable the convex ribs 321 to enter the short grooves 312; when the outer cylinder 2 does not move downwards relative to the inner cylinder 1 under the action of the elastic member 33, the column is lifted, the outer cylinder 2 moves upwards relative to the inner cylinder 1 along with the column, the upper limiting member 21 and the lower limiting member 22 are driven by the movement of the outer cylinder 2 to move upwards synchronously, the upward movement of the lower limiting member 22 pushes the track pipe 31 to move upwards along the inner cylinder 1, the movement of the track pipe 31 enables the convex rib 321 to be inserted into the short groove 312 smoothly, when the lower end of the convex rib 321 abuts against the lower end of the short groove 312, the track end cannot move upwards continuously under the limiting action of the convex rib 321, at the moment, the length of the track pipe 31 clamped between the bushing 12 and the lower limiting member 22 is increased, the lower limiting member 22 is in a position for plugging the well-washing port 111 after abutting against the track pipe 31, so that the well-washing port 111 is closed, and, after the lifting action force is exerted, the track pipe 31 cannot move upwards relative to the inner cylinder 1 continuously under the, cannot move downwards relative to the inner barrel 1 under the action of the elastic member 33, so that the well washing port 111 is kept in a closed state;
in the process that the outer cylinder 2 moves up and down relative to the inner cylinder 1, the elastic element 33 can ensure that the reversing pipe 32 is always abutted against the bush 12, so that the position of the lower limiting element 22 can be changed only by positioning the adjusting convex rib 321 in the long groove 311 or the short groove 312, and the well washing port 111 is opened or closed.
The utility model discloses a pen type washable well connects through setting up drive assembly 3 for lift or transfer the tubular column, can open or close and wash well head 111, thereby realized under the condition that does not play oil pipe, also can open the well-flushing passageway and wash the well operation, and close the well-flushing passageway after well-flushing technology accomplishes.
Further, the elastic member 33 is a spring, which has good elasticity and can meet the use requirement of the elastic member 33, and of course, the elastic member 33 may also be a spring plate or a rubber ring with good elasticity, and the description thereof is omitted.
Further, the bush 12 and the inner cylinder 1 are of an integrated structure, so that the reliability of connection between the bush 12 and the inner cylinder 1 can be ensured, and the bush 12 can be prevented from moving relative to the inner cylinder 1.
Further, as shown in fig. 3, the outer circumferential surface of the inner cylinder 1 is provided with a ring groove 11, the ring groove 11 is located below the bushing 12, and the well-flushing opening 111 is located in the ring groove 11, that is, the well-flushing opening 111 is recessed in the outer circumferential surface of the inner cylinder 1, so that the well-flushing opening 111 can be conveniently plugged by the lower stopper 22.
In an embodiment of the present invention, as shown in fig. 1, the lower stopper 22 is an annular boss protruding from the inner surface of the lower end of the outer tube 2, i.e. the lower stopper 22 and the outer tube 2 are integrated to ensure the reliability of the connection between the lower stopper 22 and the outer tube 2, thereby ensuring the reliability of the lower stopper 22 closing the washing well opening 111.
Further, in order to ensure the reliability of the lower stopper 22 for sealing the wellhead washing opening 111, two sealing rings 221 are embedded in the inner surface of the lower stopper 22, and in a state where the wellhead washing opening 111 is blocked by the lower stopper 22, the two sealing rings 221 are respectively located at the upper side and the lower side of the wellhead washing opening 111, that is, the wellhead washing opening 111 is sealed by a bidirectional sealing structure, so as to prevent the wellhead washing opening 111 from being buried by sand.
Further, the upper limiting member 21 is a retaining ring, an external thread (not shown in the figure) is arranged on the outer peripheral surface of the retaining ring, an internal thread (not shown in the figure) is arranged on the inner surface of the upper portion of the outer cylinder 2, the retaining ring is connected with the outer cylinder 2 through the thread fit of the external thread and the internal thread, the thread connection mode is simple, the connection between the outer cylinder 2 and the upper limiting member 21 is facilitated, and the initial pressure of the elastic member 33 is convenient to adjust.
Furthermore, in order to ensure the sealing performance between the baffle ring and the inner cylinder 1, a sealing ring is embedded in the inner surface of the baffle ring, and the baffle ring and the inner cylinder 1 are sealed through the sealing ring.
Of course, the upper stopper 21 may be an annular boss protruding from the inner surface of the upper end of the outer tube 2, the lower stopper 22 may be a stopper, or both the upper stopper 21 and the lower stopper 22 may be stoppers.
The utility model discloses an in one embodiment, as shown in fig. 3 and 5, the lower extreme of switching-over pipe 32 is equipped with a plurality of dogtooths 322 along circumference, the upper end of bush 12 is equipped with a plurality of recesses 122 corresponding with each dogtooth 322, through the joint cooperation of the dogtooth 322 that corresponds and recess 122, bush 12 meets with switching-over pipe 32, the cooperation of dogtooth 322 and recess 122, can enough ensure the reliability of butt between switching-over pipe 32 and bush 12, can avoid the relative inner tube 1 rotation of switching-over pipe 32 again, thereby the accuracy of bead 321 removal between elongated slot 311 and short groove 312 has been guaranteed.
In a preferred embodiment of the present invention, as shown in fig. 4, a plurality of long grooves 311 and a plurality of short grooves 312 are disposed along the axial direction of the track pipe 31, and the plurality of long grooves 311 and the plurality of short grooves 312 are alternately disposed along the circumferential direction of the track pipe 31, so that the protruding ribs 321 can smoothly move between the long grooves 311 and the short grooves 312, thereby facilitating the opening and closing operation of the well-flushing port 111.
Preferably, the number of the long slots 311 is equal to the number of the short slots 312, and a plurality of spaced ribs 321 may be provided on the reversing tube 32 in the axial direction, and the number of the ribs 321 may be equal to or less than the number of the short slots 312.
Further, in order to facilitate the movement of the protruding rib 321 between the long groove 311 and the short groove 312, as shown in fig. 4, a first guiding inclined surface 3111 for facilitating the sliding of the protruding rib 321 is disposed on a side wall of the long groove 311, and a second guiding inclined surface 3121 for facilitating the sliding of the protruding rib 321 is disposed on a side wall of the short groove 312, so that the protruding rib 321 can smoothly enter the long groove 311 along the first guiding inclined surface 3111 and can also smoothly enter the short groove 312 along the second guiding inclined surface 3121, thereby facilitating the operation of replacing the protruding rib 321 from the long groove 311 into the short groove 312 or replacing the short groove 312 into the long groove 311.
The working process of the pen-type washable well joint provided by the utility model is specifically described below with reference to the accompanying drawings:
when in use, the upper end of the outer cylinder 2 of the pen-type washable well joint is connected with the lower end of the sand anchor under the oil well pump to form a pipe column, when in use, the convex rib 321 is positioned in the short groove 312, and at the moment, the lower limiting piece 22 is in a state of plugging the well washing port 111;
when the well washing operation is needed, the pipe column is lowered, the lower end face of the inner cylinder 1 is in contact with a sand surface or a well bottom, the pipe column is lowered continuously, at the moment, the inner cylinder 1 is abutted against the sand surface or the well bottom cannot move downwards continuously, the outer cylinder 2 moves downwards relative to the inner cylinder 1 under the action of the pressure of the pipe column, the upper limiting piece 21 and the lower limiting piece 22 are driven by the movement of the outer cylinder 2 to move downwards synchronously, the track pipe 31 is not limited by the movement of the lower limiting piece 22 and moves downwards along the inner cylinder 1 under the action of self gravity, in the moving process of the track pipe 31, the lower end of the track pipe 31 is always abutted against the lower limiting piece 22, and the limiting lug 121 can guide the movement of the track pipe 31, so that the convex edge 321 smoothly moves out of the short groove 312 and smoothly enters the long groove 311 along the second guide inclined; because the lower end of the reversing pipe 32 is abutted to the upper end of the bush 12, and there is no relative movement tendency between the bush 12 and the inner cylinder 1, the reversing pipe 32 will not move downward relative to the inner cylinder 1, and the movement of the upper limiting member 21 will press the elastic member 33, when the outer cylinder 2 will not move downward relative to the inner cylinder 1 under the action of the elastic member 33, the column will be lifted up, the outer cylinder 2 will move upward relative to the inner cylinder 1 along with the column, the movement of the outer cylinder 2 will drive the upper limiting member 21 and the lower limiting member 22 to move upward synchronously, the upward movement of the lower limiting member 22 will push the track pipe 31 to move upward along the inner cylinder 1, the movement of the track pipe 31 will make the convex edge 321 smoothly insert into the long groove 311, when the lower end of the long groove 311 is abutted to the limiting projection 121, the track pipe 31 will not move upward under the limiting action of the limiting projection 121, at this time, the length of the track pipe 31 sandwiched between the, the lower limiting piece 22 is still positioned above the well washing port 111 after abutting against the track pipe 31, so that the well washing port 111 is opened to communicate with the shaft, and after the upward lifting force is lost, the track pipe 31 cannot move upwards relative to the inner cylinder 1 under the limitation of the track pipe 31 and cannot move downwards relative to the inner cylinder 1 under the action of the elastic piece 33, so that the well washing port 111 is kept in an opened state, namely the state shown in fig. 1 and 2;
when the well washing operation is completed, the pipe column is lowered again, the upper limiting piece 21 and the lower limiting piece 22 are driven to synchronously move downwards by the movement of the outer cylinder 2, the track pipe 31 is not limited by the movement of the lower limiting piece and moves downwards along the inner cylinder 1 under the action of self gravity, in the moving process of the track pipe 31, the lower end of the track pipe 31 is always abutted to the lower limiting piece 22, and the limiting lug 121 can guide the movement of the track pipe 31, so that the convex edge 321 is smoothly moved out of the long groove 311 and smoothly enters the short groove 312 along the first guiding inclined surface 3111; when the outer cylinder 2 does not move downwards relative to the inner cylinder 1 under the action of the elastic member 33, the column is lifted, the outer cylinder 2 moves upwards relative to the inner cylinder 1 along with the column, the movement of the outer cylinder 2 drives the upper limiting member 21 and the lower limiting member 22 to move upwards synchronously, the upward movement of the lower limiting member 22 pushes the track pipe 31 to move upwards along the inner cylinder 1, the movement of the track pipe 31 enables the convex rib 321 to be inserted into the short groove 312 smoothly, when the lower end of the convex rib 321 abuts against the lower end of the short groove 312, the track end cannot move upwards continuously under the limiting action of the convex rib 321, at this time, the length of the track pipe 31 clamped between the bushing 12 and the lower limiting member 22 is increased, so that the lower limiting member 22 is in a position for plugging the wellhead washing 111 after abutting against the track pipe 31, and the two sealing rings 221 on the lower limiting member 22 are respectively located at the upper side and the lower side of the wellhead washing 111, so that the, when the lifting force is lost, the trace pipe 31 cannot move upwards relative to the inner cylinder 1 under the restriction of the trace pipe 31 and cannot move downwards relative to the inner cylinder 1 under the action of the elastic member 33, so that the well-flushing port 111 is kept in a closed state;
in the process that the outer cylinder 2 moves up and down relative to the inner cylinder 1, the elastic element 33 can ensure that the reversing pipe 32 is always abutted against the lining 12, so that the length of the track pipe 31 arranged between the lining 12 and the lower limiting element 22 is changed by positioning the adjusting convex rib 321 in the long groove 311 or the short groove 312, thereby changing the position of the lower limiting element 22 and further realizing the opening or closing of the well washing port 111.
To sum up, the pen-type washable well joint of the utility model can open or close the well washing port by lifting or lowering the pipe column through the driving component, thereby realizing that the well washing channel is opened for well washing operation under the condition that the oil pipe is not lifted out, and the well washing channel is closed after the well washing process is finished;
the utility model discloses a pen type washable well connects through set up two sets of sealing washers on locating part down, can prevent effectively that the washing well head from being buried by sand.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention. Moreover, it should be noted that the components of the present invention are not limited to the above-mentioned integral application, and various technical features described in the present invention can be selected to be used alone or in combination according to actual needs, so that the present invention naturally covers other combinations and specific applications related to the invention of the present invention.
Claims (10)
1. A pen-type washable well joint, comprising:
the side wall of the inner barrel is provided with a well washing port, the outer part of the inner barrel is sleeved with a lining, the lining is positioned above the well washing port, and the outer surface of the lining is provided with a limiting lug;
the outer cylinder is movably sleeved outside the inner cylinder, the inner surface of the outer cylinder is connected with an upper limiting piece and a lower limiting piece at intervals, and the inner surface of the upper limiting piece and the inner surface of the lower limiting piece are both attached to the peripheral surface of the inner cylinder;
the driving assembly is sleeved outside the inner barrel and located between the upper limiting piece and the lower limiting piece, the driving assembly comprises a track pipe and a reversing pipe, the lower end of the track pipe can abut against the lower limiting piece, a track is arranged on the track pipe, the track comprises at least one long groove and at least one short groove which are arranged in parallel along the axial direction of the track pipe, the upper end of the long groove is flush with and communicated with the upper end of the short groove, the limiting lug is slidably arranged in the long groove, the upper end of the reversing pipe is connected with the upper limiting piece through an elastic piece, the lower end of the reversing pipe abuts against the upper end of the bushing, a convex edge is arranged on the outer surface of the reversing pipe, the convex edge is slidably arranged in the track, and the lower limiting piece blocks the well washing port in a state that the convex edge is located in the short groove; and under the condition that the lower end of the convex ridge is positioned at the lower part of the elongated slot, the lower limiting piece is positioned above the well washing port, and the well washing port is communicated with the outside.
2. The pen-type washable well joint according to claim 1,
the lower limiting piece is an annular boss which is convexly arranged on the inner surface of the lower end of the outer barrel.
3. The pen-type washable well joint according to claim 2,
the inner surface of the lower limiting piece is embedded with two sealing rings which are arranged at intervals, and the two sealing rings are respectively positioned at the upper side and the lower side of the well washing port in the state that the well washing port is blocked by the lower limiting piece.
4. The pen-type washable well joint according to claim 1,
the upper limiting piece is a blocking ring, external threads are arranged on the peripheral surface of the blocking ring, internal threads are arranged on the inner surface of the upper portion of the outer barrel, and the blocking ring is connected with the outer barrel through the threaded fit of the external threads and the internal threads.
5. The pen-type washable well joint according to claim 1,
the lower end of the reversing pipe is circumferentially provided with a plurality of convex teeth, the upper end of the bushing is provided with a plurality of grooves corresponding to the convex teeth, and the bushing is connected with the reversing pipe through the corresponding clamping fit of the convex teeth and the grooves.
6. The pen-type washable well joint according to claim 1,
and a plurality of long grooves and a plurality of short grooves are arranged along the axial direction of the track pipe, and the long grooves and the short grooves are alternately arranged along the circumferential direction of the track pipe.
7. The pen-type washable well joint according to claim 6,
and a first guide inclined plane convenient for the convex edge to slide in is arranged on one side wall of the long groove, and a second guide inclined plane convenient for the convex edge to slide in is arranged on one side wall of the short groove.
8. The pen-type washable well joint according to claim 1,
the elastic piece is a spring.
9. The pen-type washable well joint according to any one of claims 1 to 8,
the outer peripheral face of inner tube is equipped with the annular, the annular is located the below of bush, the well-flushing mouth is located in the annular.
10. The pen-type washable well joint according to any one of claims 1 to 8,
the bush and the inner barrel are of an integrated structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921740203.9U CN211230306U (en) | 2019-10-17 | 2019-10-17 | Pen type well-flushing joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921740203.9U CN211230306U (en) | 2019-10-17 | 2019-10-17 | Pen type well-flushing joint |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115365949A (en) * | 2022-09-26 | 2022-11-22 | 泸州职业技术学院 | Grinding device for machine-building design |
| CN115405247A (en) * | 2021-05-28 | 2022-11-29 | 中国石油天然气股份有限公司 | Receive and release controllable cutting device in pit |
-
2019
- 2019-10-17 CN CN201921740203.9U patent/CN211230306U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115405247A (en) * | 2021-05-28 | 2022-11-29 | 中国石油天然气股份有限公司 | Receive and release controllable cutting device in pit |
| CN115405247B (en) * | 2021-05-28 | 2023-09-08 | 中国石油天然气股份有限公司 | Downhole cutting device with controllable retraction and extension |
| CN115365949A (en) * | 2022-09-26 | 2022-11-22 | 泸州职业技术学院 | Grinding device for machine-building design |
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