CN214403521U

CN214403521U - Free rotation guide type reaming casing floating shoe assembly

Info

Publication number: CN214403521U
Application number: CN202022553534.0U
Authority: CN
Inventors: 赵付海; 张自平
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-07
Filing date: 2020-11-07
Publication date: 2021-10-15
Anticipated expiration: 2030-11-07

Abstract

A free rotation guide type reaming casing float shoe assembly belongs to the technical field of oil field oil well float shoes, overcomes the defects of the prior art, and has the structural relationship that a rotation guide head is fixedly connected with a rotating body through trapezoidal threads; the rotating body is rotationally connected with three rows of circular grooves of the inner hole at the left end of the body through steel balls; the inner circle of the stop ring is fixedly connected with the left end thread of the valve core support through threads, and the right end of the valve core support is fixedly connected with the body through external threads; the valve core is positioned in the valve core support, and the right sealing surface of the valve core is attached to the sealing surface of the valve seat through a valve core spring; the valve seat is fixed in the body through external threads; the right end of the body is connected with the sleeve by screw threads.

Description

Free rotation guide type reaming casing floating shoe assembly

Technical Field

The utility model belongs to the technical field of oil field oil well float shoe technique and specifically relates to a free rotation guide type reaming sleeve pipe float shoe assembly.

Background

In the process of well cementation and casing running of an oil and gas field, when necking, steps and unclean well holes occur in the well, a common hemispherical guide shoe is large in contact area and large in friction force, so that a casing string is difficult to normally enter the well, the situation of casing clamping can be caused in serious situations, and well cementation construction can be seriously influenced.

Disclosure of Invention

The utility model aims at providing a free rotation guide type reaming sleeve float shoe assembly, which overcomes the defects of the prior art, and the utility model aims to realize the free rotation guide type reaming sleeve float shoe assembly, which comprises a rotation guide head, a rotator, a first sealing ring, a steel ball, a stop ring, a pin shaft, a stop spring, a valve core support, a valve core spring, a valve core, a second sealing ring, a valve seat, a body, a hard alloy diamond-shaped block and an alloy block, wherein the rotation guide head is fixedly connected with the rotator by trapezoidal threads; the rotating body is rotationally connected with the three rows of circular grooves of the inner hole at the left end of the body through steel balls; the stop ring is positioned in the body and can slide under the condition of pin shaft limitation; a gap is reserved between the end surface of the left end of the stop ring and the end surface of the right end of the rotating body; the pin shaft is fixed in the long groove, the stop spring is positioned in the body, and two ends of the stop spring are respectively connected with the right end surface of the stop ring and the step in the body; the inner circle of the stop ring is fixedly connected with the left end thread of the valve core support through threads, and the right end of the valve core support is fixedly connected with the body through external threads; the valve core is positioned in the valve core support, and the right sealing surface of the valve core is attached to the sealing surface of the valve seat through a valve core spring; the valve seat is fixed in the body through external threads; the middle of the valve seat and the body is sealed by a second sealing ring; the right end of the body is connected with the sleeve through threads; the hard alloy diamond blocks are welded on the periphery of the body by a brazing technology, and the right row of the hard alloy diamond blocks and the left end of the spiral edge are arranged in a superposition way; the tail part of the hard alloy diamond block is positioned at the left end part of the spiral edge; the pin shaft is fixed on the body through threaded connection, and the right end of the spiral edge is connected with an alloy block.

The rotary guide head is in a shape that the front end is small and the rear end is large, and one surface of the rotary guide head is provided with an inclination in a circular arc shape; the outer part of the three guide grooves is provided with three guide grooves which are uniformly distributed around the circumference; the periphery of the rotary guide head is provided with three liquid outlet holes, the periphery of each liquid outlet hole is provided with a counter bore, and the three liquid outlet holes are uniformly distributed around the circumference.

The periphery of the rotating body is provided with a first sealing ring, the right end face of the rotating body is provided with a first stop boss and a first stop groove, and the outer circumference of the right end of the rotating body is provided with three rows of circular grooves.

Six long grooves are uniformly distributed on the periphery of the stop ring, and a second stop boss and a second stop groove are formed at the left end of the stop ring.

The periphery of the body is provided with raised spiral edges, the spiral edges are six sides, and the six sides are uniformly arranged.

The hard alloy diamond blocks are axially arranged in two rows, six equal parts of the hard alloy diamond blocks are arranged on the circumference, and the six equal parts of the hard alloy diamond blocks are uniformly distributed; and a groove is formed in the middle of the valve core support 8.

The application method of the utility model is that the left end of the moving ring is provided with the second stop lug boss and the second stop groove, and a gap is arranged between the end surface of the left end of the stop ring and the end surface of the right end of the rotating body; normally go into the well during operation, front end rotator and rotatory guide head can be relative the body free rotation, finish when the well cementation, when boring this instrument internals, when boring the case support and removing the groove in the middle of, the case support is separated from the groove, stop spring promotes the retaining ring towards the left end, cause the second locking boss and the groove of retaining ring left end and the first locking boss and the groove of rotator right-hand member to combine, under the effect of round pin axle, the rotator is fixed with the relative body of rotatory guide head, can not free rotation again, can bore smoothly and remove the residual material.

The utility model has the following significance: the device has reasonable structure, the rotating body has an inclined plane structure to play a guiding role, and the rotating body can freely rotate, so that the device is suitable for the whole well entering angle, the surface of the hard alloy is welded, the blocking in the well can be repaired by lifting up and down or rotating and the like, the reaming effect is realized, the guide groove of the tool can discharge drilling fluid, scraps and the like, the sleeve can be smoothly strung in the well, and the pipe blocking phenomenon is avoided; the internal connection structure of the device can facilitate drilling and removing after well entering, and the phenomenon that the drill bit slips when drilling and removing can not occur.

Drawings

FIG. 1 is a front view of a free-wheeling guided reaming casing float shoe assembly.

FIG. 2 is a cross-sectional view of a free-wheeling guided reaming casing float shoe assembly.

FIG. 3 is a structural diagram showing the connection between the rotating body and the stopper ring.

In the figure 1, a rotary guide head 2, a rotary body 3, a first sealing ring 4, a steel ball 5, a stop ring 6, a pin shaft 7, a stop spring 8, a valve core support 9, a valve core spring 10, a valve core 11, a second sealing ring 12, a valve seat 13, a body 14, a thread 15, a groove 16, a long groove 17, a liquid outlet hole 18, a flow guide groove 19, a hard alloy diamond block 20, a spiral edge 21, an alloy block 22, a first stop boss and groove 23 and a second stop boss and groove 23.

Detailed Description

Embodiment 1, the utility model discloses a rotatory guide head 1, rotator 2, first sealing washer 3, steel ball 4, retaining ring 5, round pin axle 6, retaining spring 7, case support 8, case spring 9, case 10, second sealing washer 11, valve seat 12, body 13, carbide diamond-shaped block 19, alloy piece 21, rotatory guide head 1 and rotator 2 are by trapezoidal thread fixed connection; the rotating body 2 is rotationally connected with three rows of circular grooves of the inner hole at the left end of the body 13 through steel balls 4; the stop ring 5 is positioned inside the body 13, and the stop ring 5 can slide under the condition of the limit of the pin shaft 6; a gap is reserved between the end surface of the left end of the stop ring 5 and the end surface of the right end of the rotating body 2; the pin shaft 6 is fixed in the long groove 16, the stop spring 7 is positioned in the body 13, and two ends of the stop spring 7 are respectively connected with the right end surface of the stop ring 5 and the step in the body 13; the inner circle of the stop ring 5 is fixedly connected with the left end thread of the valve core support 8 through threads, and the right end of the valve core support 8 is fixedly connected with the body 13 through external threads; the valve core 10 is positioned in the valve core support 8, and the right sealing surface of the valve core 10 is attached to the sealing surface of the valve seat 12 through the valve core spring 9; the valve seat 12 is fixed inside the body 13 through external threads; the middle of the valve seat 12 and the body 13 is sealed by a second sealing ring 11; the right end of the body 13 is connected with the sleeve through threads 14; the hard alloy diamond blocks 19 are welded on the periphery of the body 13 by a brazing technology, and the right row of the hard alloy diamond blocks 19 and the left end of the spiral edge 20 are arranged in a superposition way; the tail part of the hard alloy diamond block 19 is positioned at the left end part of the spiral edge 20; the pin shaft 6 is fixed on the body 13 through threaded connection, and the right end of the spiral edge 20 is connected with an alloy block 21.

Example 2, the shape of the rotary guide head 1 is small at the front and big at the back, and one surface has a slope of an elliptical shape: the outer part of the device is provided with three diversion trenches 18, and the three diversion trenches 18 are uniformly distributed around the circumference; the periphery of the rotary guide head 1 is provided with three liquid outlet holes 17, the periphery of the liquid outlet holes 17 is provided with counter bores, and the three liquid outlet holes 17 are uniformly distributed around the circumference.

In embodiment 3, the first sealing ring 3 is arranged on the periphery of the rotating body 2, the stop boss and the groove 22 are arranged on the right end surface of the rotating body 2, and three rows of circular grooves are arranged on the outer periphery of the right end of the rotating body 2.

In embodiment 4, six long grooves 16 are uniformly distributed on the periphery of the stop ring 5, and a second stop boss and a groove 23 are arranged at the left end of the stop ring 5.

In example 5, the periphery of the body 13 is provided with a raised spiral edge 20, and the spiral edge 20 is six sides which are uniformly arranged.

In example 6, the cemented carbide diamonds 19 are arranged in two rows in the axial direction, six equal parts of the cemented carbide diamonds 19 are arranged on the circumference, and the six equal parts of the cemented carbide diamonds 19 are uniformly distributed.

In embodiment 7, a groove 15 is arranged in the middle of the valve core support 8.

Claims

1. The utility model provides a free rotation guide formula reaming sleeve pipe float shoe assembly, it includes rotation guide head (1), rotator (2), first sealing washer (3), steel ball (4), retaining ring (5), round pin axle (6), retaining spring (7), case support (8), case spring (9), case (10), second sealing washer (11) disk seat (12), body (13), carbide diamond-shaped piece (19), alloy piece (21), characterized by: the rotary guide head (1) is fixedly connected with the rotary body (2) through trapezoidal threads; the rotating body (2) is rotationally connected with three rows of circular grooves of the inner hole at the left end of the body (13) through steel balls (4); the stop ring (5) is positioned in the body (13), and the stop ring (5) can slide under the condition of limiting of the pin shaft (6); a gap is arranged between the end surface of the left end of the stop ring (5) and the end surface of the right end of the rotating body (2); the pin shaft (6) is fixed in the long groove (16), the stop spring (7) is positioned in the body (13), and two ends of the stop spring (7) are respectively connected with the right end surface of the stop ring (5) and the step in the body (13); the inner circle of the stop ring (5) is fixedly connected with the left end thread of the valve core support (8) through threads, and the right end of the valve core support (8) is fixedly connected with the body (13) through external threads; the valve core (10) is positioned in the valve core support (8), and the right sealing surface of the valve core (10) is attached to the sealing surface of the valve seat (12) through a valve core spring (9); the valve seat (12) is fixed inside the body (13) through external threads, and the middle of the valve seat (12) and the body (13) is sealed by a second sealing ring (11); the right end of the body (13) is connected with the sleeve through a thread (14); the hard alloy diamond blocks (19) are welded on the periphery of the body (13) by a brazing technology, and the right row of the hard alloy diamond blocks (19) is arranged in a manner of being superposed with the left end of the spiral edge (20); the tail part of the hard alloy diamond block (19) is positioned at the left end part of the spiral edge (20); the pin shaft (6) is fixed on the body (13) through threaded connection, and the right end of the spiral edge (20) is connected with an alloy block (21).

2. The free-wheeling guided reaming casing float shoe assembly of claim 1, wherein: the shape of the rotary guide head (1) is that the front is small and the back is big, and one surface has an oval inclination; the outer part of the device is provided with three diversion trenches (18), and the three diversion trenches (18) are uniformly distributed around the circumference; the periphery of the rotary guide head (1) is provided with three liquid outlet holes (17), the periphery of each liquid outlet hole (17) is provided with a counter bore, and the three liquid outlet holes (17) are uniformly distributed around the circumference.

3. The free-wheeling guided reaming casing float shoe assembly of claim 1, wherein: the periphery of the rotating body (2) is provided with a first sealing ring (3), the right end face of the rotating body (2) is provided with a first stop boss and a groove (22), and the outer circumference of the right end of the rotating body (2) is provided with three rows of circular grooves.

4. The free-wheeling guided reaming casing float shoe assembly of claim 1, wherein: six long grooves (16) are uniformly distributed on the periphery of the stop ring (5), and a second stop boss and a second stop groove (23) are formed in the left end of the stop ring (5).

5. The free-wheeling guided reaming casing float shoe assembly of claim 1, wherein: the periphery of the body (13) is provided with a raised spiral edge (20), the spiral edge (20) is six sides, and the six sides are uniformly arranged.

6. The free-wheeling guided reaming casing float shoe assembly of claim 1, wherein: the hard alloy diamond blocks (19) are axially arranged in two rows, six equal parts of the hard alloy diamond blocks (19) are arranged on the circumference, and the six equal parts of the hard alloy diamond blocks (19) are uniformly distributed.

7. The free-wheeling guided reaming casing float shoe assembly of claim 1, wherein: and a groove (15) is formed in the middle of the valve core support (8).