CN212583667U

CN212583667U - Novel automatic grouting float collar float shoe capable of swirling flow

Info

Publication number: CN212583667U
Application number: CN202021424784.8U
Authority: CN
Inventors: 万宏辉; 张雷; 李崇芹
Original assignee: Jiangsu Saiwei Petroleum Technology Co ltd
Current assignee: Jiangsu Saiwei Petroleum Technology Co ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-02-23
Anticipated expiration: 2030-07-17

Abstract

The utility model relates to a novel but automatic grout float collar float shoe of flowing, it includes the body, from top to bottom fixed mounting pad that is provided with in proper order in the body, go up supporting seat and under bracing seat, first through-hole has been seted up on the mounting pad, the second through-hole has been seted up on the last supporting seat, be equipped with adjusting part between mounting pad and the last supporting seat, be equipped with whirl subassembly in the body, whirl subassembly includes the center pin of being connected and is fixed in the epaxial helical blade of center with last supporting seat and under bracing seat equal rotation, a plurality of whirl holes have been seted up on the lateral wall of center pin correspondence body. The drilling fluid that this application was injected into in the body flows through first through-hole and second through-hole downwards in proper order to on punching to the helical blade, with this drive center pin and helical blade synchronous revolution, the rotatory turbulent flow of drilling fluid is constantly thrown away the body by the whirl hole this moment, realizes the washing of the wall of a well, makes the frictional resistance between sleeve pipe and the wall of a well reduce, and the sheathed tube of being convenient for is gone into down, has the effect that reduces the well cementation risk.

Description

Novel automatic grouting float collar float shoe capable of swirling flow

Technical Field

The application relates to the technical field of drilling equipment, in particular to a novel rotatable automatic grouting float collar float shoe.

Background

Well cementation is an important operation in the drilling process, and the operation process is as follows: and (2) putting a casing string with a certain size into the well, injecting cement slurry around the casing string, and fixing the casing on the well wall to avoid the casing from being corroded, wherein the float collar and float shoe device is an important device in the casing putting process.

At present, chinese utility model patent of publication No. CN210178330U discloses a spacing claw formula is from irritating float collar float shoe, including the installation body, the one end of installation piece is coaxial to be equipped with the third and leads to the groove, the bottom coaxial coupling that the groove was led to the third has the second to lead to the groove, the bottom coaxial coupling that the groove was led to the second is equipped with first logical groove, first logical inslot is coaxial to be equipped with the montant, the coaxial fixedly connected with roof of montant one end that the groove was led to the third, the bottom coaxial coupling of roof has reset spring, reset spring's other end coaxial coupling has annular mounting panel, the other end of montant is located the lower extreme of installation piece, be located coaxial fixedly connected with spheroid on the montant of installation piece lower extreme, the top of first montant all. When going on the operation of casing pipe down, under the combined action of reset spring and montant, the spheroid reciprocates to carry out quick sealed to the bottom that leads to the groove first, prevent the grout refluence. However, in the process of oil field well cementation and casing running, the frictional resistance of the casing is increased due to the mud on the well wall, which is not beneficial to running the casing, thereby increasing the risk of well cementation.

With respect to the related art among the above, the inventors consider that there is a drawback in that the risk of cementing increases.

SUMMERY OF THE UTILITY MODEL

In order to reduce the risk of well cementation, this application provides a novel automatic grout float collar float shoe that can whirl.

The application provides a but novel automatic grout float collar float shoe of whirl adopt following technical scheme:

the utility model provides a novel but automatic grout float collar float shoe of whirl, includes the body, from top to bottom fixes gradually in the body and is provided with mount pad, last supporting seat and under bracing seat, first through-hole has been seted up on the mount pad, go up and has seted up the second through-hole on the supporting seat, the mount pad with go up and be provided with control between the supporting seat the adjusting part that first through-hole opened and shut, be provided with the whirl subassembly in the body, the whirl subassembly include with go up the supporting seat and the under bracing seat all rotates the center pin of connection and is fixed in helical blade on the center pin lateral wall, the center pin corresponds a plurality of whirl holes have been seted up on the lateral wall of body.

Through adopting above-mentioned technical scheme, at the well cementation in-process, inject drilling fluid into the body, drilling fluid pushes down the adjusting part and makes first through-hole open, again downwards flow through first through-hole and second through-hole in proper order, and strike on the helical blade, with this drive center pin and helical blade synchronous revolution, the rotatory turbulent flow of drilling fluid this moment, and continuous throws away the body by the whirl hole, in order to wash the wall of a well, with this reduce the frictional resistance between sleeve pipe and the wall of a well, be convenient for the entering of sheathed tube, thereby the risk of well cementation has been reduced.

Preferably, the second through hole is a tapered inclined hole with a section diameter gradually decreasing from top to bottom.

Through adopting above-mentioned technical scheme, because the diameter of second through-hole reduces gradually, when drilling fluid flows through the second through-hole, the velocity of flow of drilling fluid crescent, pressure increase when making it flow out the second through-hole to increased the drilling fluid and to the impetus of whirl subassembly, improved the rotatory turbulent flow of drilling fluid, with this improvement to the cleaning performance of the wall of a well.

Preferably, an upper rotating groove is formed in the bottom surface of the upper supporting seat, a lower rotating groove is formed in the top surface of the lower supporting seat, and bearings fixedly connected with the end portions of the central shaft are fixedly mounted in the upper rotating groove and the lower rotating groove.

Through adopting above-mentioned technical scheme, the center pin passes through the bearing and rotates with last supporting seat and lower supporting seat to be connected, and when the center pin rotated, the ball in the bearing rolled, had reduced the frictional force between center pin and last supporting seat and the lower supporting seat to this improves center pin pivoted flexibility, thereby is favorable to the rotatory turbulent flow of drilling fluid.

Preferably, the adjusting part comprises a plugging block for plugging the first through hole and a compression spring fixedly arranged between the plugging block and the upper supporting seat, and the plugging block is in plugging fit with the first through hole.

Through adopting above-mentioned technical scheme, when injecting drilling fluid in the body, the drilling fluid pushes down and moves the shutoff piece, and compression spring is compressed, and the shutoff piece moves down, makes first through-hole open, and the drilling fluid passes through first through-hole downflow to this realizes the control that adjusting part opened and shut first through-hole.

Preferably, the diameter of the cross section of the first through hole is gradually reduced from top to bottom, and the plugging block is in a circular truncated cone shape matched with the first through hole.

By adopting the technical scheme, when slurry is poured into the pipe body to perform well cementation, the flow rate of the poured slurry is different, and the pressure of the slurry on the blocking block exists, so that the downward moving positions of the blocking block are different, the adjustment of the size of the gap between the first through hole and the blocking block is realized, the adjustment of the self-pouring speed is realized, different self-pouring speeds can be selected according to different working conditions, the pressure-bouncing and the waiting of the slurry are facilitated, and the construction is convenient.

Preferably, a protection pad made of an elastic material is fixedly arranged on the side wall of the blocking block.

Through adopting above-mentioned technical scheme, the protection pad is made by rubber, and rubber has good elasticity and texture soft, and when the first through-hole of shutoff piece upwards removed the shutoff, elastic deformation takes place for the protection pad to form the buffering to shutoff piece and first through-hole, prevent that the shutoff piece from striking the mount pad and leading to damaging, and support tightly with the inside wall of first through-hole, reach good sealed, prevent that mud from recharging.

Preferably, a limiting groove is formed in the top surface of the upper supporting seat, a limiting cylinder is fixedly arranged on the bottom surface of the plugging block, the side wall of the lower end of the limiting cylinder is attached to the side wall of the limiting groove, and the limiting cylinder is matched with the limiting groove in a sliding mode.

Through adopting above-mentioned technical scheme, when the shutoff piece reciprocated, spacing section of thick bamboo slided in the spacing groove, and the limiting displacement of spacing section of thick bamboo in vertical side only carries out the ascending removal of spacing section of thick bamboo this moment limiting groove, prevents that the shutoff piece from taking place the incline to ensure the shutoff effect of shutoff piece.

Preferably, a hemispherical guide head is integrally formed at the bottom end of the tube body.

Through adopting above-mentioned technical scheme, when the body was gone into, in the guide inserted well by hemispherical direction head guide, the direction head played good guide effect, was favorable to the inserting of body, was convenient for be under construction.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the drilling fluid injected into the pipe body flows downwards through the first through hole and the second through hole in sequence and is punched on the spiral blades, so that the central shaft and the spiral blades are driven to rotate synchronously, the drilling fluid rotates turbulently and is continuously thrown out of the pipe body through the rotational flow holes to clean the well wall, the frictional resistance between the sleeve and the well wall is reduced, the sleeve is convenient to drop, and the risk of well cementation is reduced;

2. the flow velocity of the drilling fluid flowing through the second through hole is gradually increased, and the driving force borne by the rotational flow component is increased, so that the rotational turbulence of the drilling fluid is improved, the drilling fluid is favorably discharged, and the cleaning effect of the drilling fluid on the well wall is enhanced;

3. drilling fluid in the body pushes down and moves the shutoff piece, and compression spring is compressed, and the shutoff piece moves down, makes first through-hole open, and drilling fluid passes through first through-hole downflow, realizes the control that adjusting part opened and shut to first through-hole.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present application.

Description of reference numerals: 1. a pipe body; 11. a mounting seat; 111. a first through hole; 12. an upper support base; 121. a second through hole; 122. a limiting groove; 123. an upper rotating groove; 13. a lower support seat; 131. a lower rotating groove; 14. a guide head; 15. a swirl hole; 2. an adjustment assembly; 21. a plugging block; 211. a protection pad; 22. a compression spring; 23. a limiting cylinder; 3. a swirl assembly; 31. a central shaft; 311. a bearing; 32. a helical blade.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses a novel automatic grouting float collar float shoe capable of swirling flow. Referring to fig. 1, the novel rotational flow automatic grouting float collar float shoe comprises a pipe body 1, a mounting seat 11, an upper support seat 12, a lower support seat 13, an adjusting assembly 2 and a rotational flow assembly 3. The cross section of the pipe body 1 is circular and is fixedly arranged at the lower end of the sleeve. A guide head 14 is integrally formed at the bottom end of the pipe body 1, the guide head 14 is hemispherical, and when the pipe body 1 is guided by the guide head 14 to enter a well, the guide effect of the guide head 14 is beneficial to the insertion of the pipe body 1, so that the construction is convenient.

Referring to fig. 1, the mounting seat 11, the upper supporting seat 12 and the lower supporting seat 13 are sequentially disposed in the tube body 1 from top to bottom, the mounting seat 11, the upper supporting seat 12 and the lower supporting seat 13 are disc-shaped, and the outer side walls thereof are attached to and fixedly connected with the inner side wall of the tube body 1. First through-hole 111 has been seted up at the disc center of mount pad 11, and first through-hole 111 all communicates with the top surface and the bottom surface of mount pad 11, and the transversal personally submitting of first through-hole 111 is circular, and its diameter is crescent from top to bottom. A plurality of second through holes 121 are formed in the upper supporting seat 12, the second through holes 121 are communicated with the top surface and the bottom surface of the upper supporting seat 12, and the cross section of each second through hole 121 is circular. In this embodiment, there are eight second through holes 121, and the eight second through holes 121 are uniformly distributed along the circumferential direction of the upper support 12.

Referring to fig. 1, the adjusting assembly 2 is disposed between the mounting seat 11 and the upper supporting seat 12, and the adjusting assembly 2 includes a blocking block 21, a compression spring 22 and a limiting cylinder 23. The plugging block 21 is in a circular truncated cone shape, is coaxially arranged with the mounting base 11, and is in insertion fit with the first through hole 111. Compression spring 22 sets up between plugging block 21 and last supporting seat 12, compression spring 22's upper end and the bottom surface fixed connection of plugging block 21, lower extreme and the top surface fixed connection of last supporting seat 12. When drilling fluid is not injected into the pipe body 1, the plugging block 21 is positioned in the first through hole 111 to plug the first through hole 111; when injecting drilling fluid in the body 1, drilling fluid pushes down the plugging block 21, and the plugging block 21 pushes the compression spring 22 and moves down, so that the first through hole 111 is opened, and the control of the adjusting component 2 on opening and closing the first through hole 111 is realized. The fixed protection pad 211 that is provided with of lateral wall of shutoff piece 21, protection pad 211 are made by rubber, and when shutoff piece 21 rebound, protection pad 211 takes place elastic deformation and supports tightly with the inside wall of first through-hole 111, plays buffering and sealed dual effect.

Referring to fig. 1, the stopper cylinder 23 is cylindrical and is disposed outside the compression spring 22. The top surface of the upper supporting seat 12 is provided with a limiting groove 122, the limiting groove 122 is circular, and the axis of the limiting groove 122 coincides with the axis of the upper supporting seat 12. The upper end of the limiting cylinder 23 is fixedly connected with the bottom surface of the plugging block 21, the lower end is inserted into the limiting groove 122 and attached to the side wall of the limiting groove 122, and the limiting cylinder 23 is matched with the limiting groove 122 in a sliding manner. When the plugging block 21 moves up and down, the limiting cylinder 23 is limited by the limiting groove 122 and only slides in the vertical direction, so that the plugging block 21 is prevented from deflecting, and the plugging effect is ensured.

Referring to fig. 1, the swirler assembly 3 includes a central shaft 31 and a helical vane 32. The central shaft 31 has a cylindrical shape and is arranged coaxially with the tubular body 1. The central shaft 31 is disposed between the upper support 12 and the lower support 13, and is rotatably connected to both the upper support 12 and the lower support 13. The helical blade 32 is spirally wound around the central shaft 31 and is fixedly connected to the outer side wall of the central shaft 31. The central shaft 31 is provided with a plurality of swirl holes 15 on the side wall corresponding to the pipe body 1, and the openings of the swirl holes 15 are circular. When drilling fluid is injected into the pipe body 1, the drilling fluid flows through the first through hole 111 and the second through hole 121 downwards in sequence and is punched to the helical blades 32, so that the central shaft 31 and the helical blades 32 are driven to rotate synchronously, and the drilling fluid rotates turbulently and is continuously thrown out of the pipe body 1 through the rotational flow holes 15 to clean the well wall, so that the frictional resistance between the sleeve and the well wall is reduced, and the risk of well cementation is reduced.

Referring to fig. 1, an upper rotation groove 123 is formed on the bottom surface of the upper support base 12, a lower rotation groove 131 is formed on the top surface of the lower support base 13, and openings of the upper rotation groove 123 and the lower rotation groove 131 are circular and are coaxially arranged with the central shaft 31. Bearings 311 are fixedly arranged at both ends of the central shaft 31, and the bearing 311 at the upper end of the central shaft 31 is arranged in the upper rotating groove 123 and is fixedly connected with the upper rotating groove 123; the bearing 311 at the lower end thereof is disposed in the lower rotating groove 131 and is fixedly connected with the lower rotating groove 131. When the central shaft 31 rotates, the bearings 311 reduce the friction between the central shaft 31 and the upper and lower support bases 12 and 13, thereby improving the flexibility of the rotation of the central shaft 31.

Referring to fig. 1, the diameter of second through-hole 121 from top to bottom reduces gradually, is the inclined hole of throat for the drilling fluid velocity of flow through second through-hole 121 crescent, the driving force that whirl subassembly 3 received increases, thereby has improved the rotatory turbulent flow of drilling fluid, is favorable to drilling fluid to obtain discharging in order to strengthen its cleaning performance to the wall of a well.

The utility model provides a but novel automatic grout float collar float shoe of whirl implement the principle and do: when drilling fluid is injected into the pipe body 1, the drilling fluid flows through the first through hole 111 and the second through hole 121 downwards in sequence and is punched to the helical blades 32, so that the central shaft 31 and the helical blades 32 are driven to rotate synchronously, and the drilling fluid rotates turbulently and is continuously thrown out of the pipe body 1 through the rotational flow holes 15 to clean the well wall, so that the frictional resistance between the casing pipe and the well wall is reduced, the casing pipe is convenient to insert, and the risk of well cementation is reduced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a but novel automatic grout float collar float shoe of whirl which characterized in that: comprises a pipe body (1), wherein a mounting seat (11), an upper supporting seat (12) and a lower supporting seat (13) are fixedly arranged in the pipe body (1) from top to bottom in sequence, a first through hole (111) is arranged on the mounting seat (11), a second through hole (121) is arranged on the upper supporting seat (12), an adjusting component (2) for controlling the opening and closing of the first through hole (111) is arranged between the mounting seat (11) and the upper supporting seat (12), a rotational flow component (3) is arranged in the pipe body (1), the rotational flow component (3) comprises a central shaft (31) which is rotationally connected with the upper supporting seat (12) and the lower supporting seat (13) and a helical blade (32) which is fixed on the side wall of the central shaft (31), the central shaft (31) corresponds to the side wall of the pipe body (1) and is provided with a plurality of swirl holes (15).

2. The novel automatic grouting float collar float shoe capable of swirling according to claim 1, characterized in that: the second through hole (121) is a necking inclined hole with the section diameter gradually reduced from top to bottom.

3. The novel automatic grouting float collar float shoe capable of swirling according to claim 1, characterized in that: the utility model discloses a bearing (311) that go up supporting seat (12) and have offered on the bottom surface of going up supporting seat (123), have offered down on the top surface of lower carriage (13) and have rotated groove (131), go up rotate groove (123) with down rotate equal fixed mounting in groove (131) have with center pin (31) tip fixed connection's bearing (311).

4. The novel automatic grouting float collar float shoe capable of swirling according to claim 1, characterized in that: adjusting part (2) including the shutoff blocking piece (21) and the fixed setting in of first through-hole (111) blocking piece (21) with go up compression spring (22) between supporting seat (12), blocking piece (21) with first through-hole (111) are pegged graft the cooperation.

5. The novel automatic grouting float collar float shoe capable of swirling according to claim 4, characterized in that: the cross-sectional diameter of first through-hole (111) reduces from top to bottom gradually, shutoff piece (21) be with first through-hole (111) assorted round platform form.

6. The novel automatic grouting float collar float shoe capable of swirling according to claim 4, characterized in that: and a protective pad (211) made of elastic material is fixedly arranged on the side wall of the blocking block (21).

7. The novel automatic grouting float collar float shoe capable of swirling according to claim 4, characterized in that: the top surface of going up supporting seat (12) has been seted up spacing groove (122), fixed spacing section of thick bamboo (23) that is provided with on the bottom surface of shutoff piece (21), the lateral wall of spacing section of thick bamboo (23) lower extreme with the lateral wall laminating of spacing groove (122), just spacing section of thick bamboo (23) with spacing groove (122) cooperation of sliding.

8. The novel automatic grouting float collar float shoe capable of swirling according to claim 1, characterized in that: the bottom end of the tube body (1) is integrally formed with a hemispherical guide head (14).