CN217872683U

CN217872683U - Self-locking float collar and float shoe

Info

Publication number: CN217872683U
Application number: CN202121822127.3U
Authority: CN
Inventors: 马国耀; 顾瀛; 赵爱杰; 居建江
Original assignee: Jiangsu Huarisheng Oil And Gas Downhole Tools Co ltd
Current assignee: Jiangsu Huarisheng Oil And Gas Downhole Tools Co ltd
Priority date: 2021-08-06
Filing date: 2021-08-06
Publication date: 2022-11-22
Anticipated expiration: 2031-08-06

Abstract

The utility model discloses a from locking-type float collar float shoe, including float collar casing and float shoe casing, the edge of float collar casing outer wall bottom is seted up flutedly, and the inner wall block of recess is equipped with joint strip, and the fixed sealing flange that is equipped with in edge of joint strip inner wall one side, the intermediate position cover of joint strip outer wall is equipped with the metal tighrening ring. The utility model relates to a from locking-type float collar float shoe is through being provided with the seal structure in joint gap on the device, install in the recess of float collar casing outer wall one side through the joint strip block with this structure upper end, through the butt joint installation of float collar casing with many oil well sleeve pipes, after the installation, through twisting movable bolt make it carry out threaded connection with fixation nut, make it fasten the joint strip block in the extruded, get up the gap seal of two adjacent bushing junction, reduce the inside risk that leads to the oil impure of cement sand infiltration sleeve pipe, thereby improve the practicality of device.

Description

Self-locking type float collar and float shoe

Technical Field

The utility model relates to a technical field of float collar float shoe, in particular to from locking-type float collar float shoe.

Background

The traditional self-locking float collar float shoe is mainly used for equipment for fixedly connecting casing pipes installed in an oil well during industrial oil field exploitation, the float collar float shoe is mainly used for guiding a casing string to smoothly enter the well, the buoyancy force borne by the casing string during casing pipe setting is adjusted, a back pressure valve prevents cement slurry from flowing back into the casing pipe, and the height of a cement plug in the casing pipe is accurately controlled during well cementation, so that the well cementation quality is ensured, the float collar and the float shoe are generally used in a set, the float shoe is arranged at the lowest end of the casing pipe, 1-2 casing pipes are separated between the float collar and the float shoe, and the float collar can be used for being impacted by the cement plug;

in the prior art, when designing and manufacturing this from locking-type float collar float shoe, most of designers can pay attention to the buoyancy of design device and the bearing capacity of device, in order to guarantee to make the work that the oil well sleeve pipe can be normal under the buoyancy of the device supports, guarantee the efficiency of oil development, but when using the device equipment for a long time, if the equipment upper end does not have the seal structure of bushing junction, then can lead to silt in the oil well to get into the fluid wherein through the joint gap between the sleeve pipe when exploiting oil, make the oil that finally obtains impure, can't reach anticipated use purity, thereby reduce the practicality of device.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a from locking-type float collar float shoe to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a from locking-type float collar float shoe, includes float collar casing and float shoe casing, the edge of float collar casing outer wall bottom is seted up flutedly, the inner wall block of recess is equipped with joint strip, the fixed sealing flange that is equipped with in edge of joint strip inner wall one side, and the one side of sealing flange outer wall and the bottom contact of float collar casing, the intermediate position cover of joint strip outer wall is equipped with the metal tighrening ring, the both ends of metal tighrening ring are all fixed and are equipped with the stationary blade, two the screw, two have all been seted up to one side of stationary blade the inner wall of screw all alternates and is equipped with fixing bolt, and the both ends of fixing bolt outer wall respectively with the inner wall threaded connection of two screws.

Preferably, the outer wall of one end of the fixing bolt is sleeved with a fixing nut, and the outer wall of the fixing bolt is in threaded connection with the inner wall of the fixing nut.

Preferably, the fixed first support base that is equipped with in edge of float shoe shells inner wall one side, the card hole has been seted up to the intermediate position of first support base one side, the fixed second support base that is equipped with in intermediate position of float collar shells inner wall.

Preferably, the second supports the fixed metal connecting axle that is equipped with in intermediate position on base top, the both sides of metal connecting axle outer wall one end all alternate and are equipped with the elasticity buckle.

Preferably, one side cover of metal connecting axle outer wall is equipped with the metal separation blade, and the inner wall of metal separation blade and the outer wall fixed connection of metal connecting axle, one side cover of metal connecting axle outer wall is equipped with the spring, and the top fixed connection of the one end of spring and second support base, the other end of spring and one side fixed connection of metal separation blade.

Preferably, the edge of one end of the inner wall of the floating hoop shell is fixedly provided with a rubber strip, and the inner wall of the rubber strip is fixedly provided with an anti-slip sheet.

The utility model discloses a technological effect and advantage:

(1) The utility model discloses a be provided with the seal structure of joint gap on the device, and this structure mainly is by the recess, float collar casing, joint strip, sealing flange, metal fastening ring, the stationary blade, fixing bolt and fixation nut etc. constitute, through installing the joint strip block of this structural upper end in the recess of float collar casing outer wall one side, and through float collar casing with many oil well sleeve pipe butt joints installation, after having installed, make it and fixation nut carry out threaded connection in the screw of metal fastening ring upper end through twisting fixing bolt, make it fasten joint strip block through metal fastening ring in the extruded while, make it can seal up the gap of two adjacent sleeve pipe junctions, reduce the risk that the inside oil impurity that leads to of cement sand infiltration sleeve pipe, thereby improve the practicality of device;

(2) The utility model discloses a be provided with on the device and prevent rotatory structure that drops, and this structure is mainly supported the base by the second, the metal connecting axle, elasticity buckle, a spring, the constitution of rubber strip and antiskid sheet, through with floating hoop casing cover be equipped with on the sheathed tube outer wall of oil recovery person, and the inside metal connecting axle card that has a spring metal separation blade of floating hoop casing goes into the inside of butt joint sheathed tube, it is fixed to make it be connected with adjacent sleeve pipe, and after the card is gone into, elasticity buckle is through its upper end elasticity block in another sheathed tube inside, make it fixed can not drop, and set up the rubber strip that has the antiskid sheet in the bottom of floating hoop casing inner wall, it is rotatory to make the device install difficult slip on the sleeve pipe, lead to the cracked phenomenon of pipe connection, thereby improve device's protectiveness.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the sealing rubber strip and the sealing flange of the present invention;

fig. 3 is a schematic structural diagram of the anti-slip fixing of the rubber strip and the metal connecting shaft of the present invention.

In the figure: 1. a float collar housing; 2. a float shoe housing; 3. sealing rubber strips; 4. sealing the flange; 5. a metal fastening ring; 6. fixing the bolt; 7. fixing a nut; 8. a first support base; 9. a second support base; 10. a metal connecting shaft; 11. an elastic buckle; 12. a metal baffle plate; 13. a spring; 14. a rubber strip; 15. and (4) an anti-slip sheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

The utility model provides a self-locking float collar float shoe as shown in figures 1-3, which comprises a float collar shell 1 and a float collar shell 2, wherein the outer wall cover at one end of a fixing bolt 6 is provided with a fixing nut 7, the outer wall of the fixing bolt 6 is in threaded connection with the inner wall of the fixing nut 7, the edge of one side of the inner wall of the float collar shell 2 is fixedly provided with a first supporting base 8, the middle position of one side of the first supporting base 8 is provided with a clamping hole, the middle position of the inner wall of the float collar shell 1 is fixedly provided with a second supporting base 9, the middle position of the top end of the second supporting base 9 is fixedly provided with a metal connecting shaft 10, and both sides of one end of the outer wall of the metal connecting shaft 10 are all provided with elastic buckles 11 in an alternating way;

as shown in fig. 2, a groove is formed in the edge of the bottom of the outer wall of the floating hoop housing 1, a sealing rubber strip 3 is clamped in the inner wall of the groove, a sealing flange 4 is fixedly arranged at the edge of one side of the inner wall of the sealing rubber strip 3, one side of the outer wall of the sealing flange 4 is in contact with the bottom of the floating hoop housing 1, a metal fastening ring 5 is sleeved at the middle position of the outer wall of the sealing rubber strip 3, fixing pieces are fixedly arranged at two ends of the metal fastening ring 5, screw holes are formed in one sides of the two fixing pieces, fixing bolts 6 are inserted into the inner walls of the two screw holes, and two ends of the outer wall of each fixing bolt 6 are in threaded connection with the inner walls of the two screw holes respectively;

as shown in fig. 3, one side cover of metal connecting axle 10 outer wall is equipped with metal separation blade 12, and the inner wall of metal separation blade 12 and the outer wall fixed connection of metal connecting axle 10, one side cover of metal connecting axle 10 outer wall is equipped with spring 13, and spring 13's one end and the top fixed connection that the second supported base 9, spring 13's the other end and one side fixed connection of metal separation blade 12, the fixed rubber strip 14 that is equipped with in edge of 1 inner wall one end of float collar casing, the fixed antiskid ribbed tile 15 that is equipped with of inner wall of rubber strip 14.

The utility model discloses the theory of operation: when the self-locking type floating collar float shoe in the design scheme is used, firstly, a sealing clamping structure at the upper end of the device is fixedly installed through a metal fastening ring 5 at the upper end of the device, so that a certain sealing effect can be achieved when the device connects a plurality of sleeves, and in the design scheme, through a sealing structure provided with a connecting gap consisting of a groove, a floating collar shell 1, a sealing rubber strip 3, a sealing flange 4, a metal fastening ring 5, a fixing sheet, a fixing bolt 6, a fixing nut 7 and the like, when the self-locking type floating collar float shoe is used, the sealing rubber strip 3 at the upper end of the structure is clamped and installed in the groove at one side of the outer wall of the floating collar shell 1, the plurality of oil well sleeves are in butt joint installation through the floating collar shell 1, after the self-locking type floating collar float shoe is installed, the fixing bolt 6 is screwed to be in threaded connection with the fixing nut 7 in a screw hole at the upper end of the metal fastening ring 5, the sealing rubber strip 3 is clamped and fastened through the metal fastening ring 5 while the floating collar shell 1 is extruded, so that a gap at the joint of two adjacent sleeves can be sealed, the risk of impure petroleum caused by the permeation of cement and sand into the sleeves is reduced, the practicability of the device is improved, the floating collar shell 1 is internally provided with a structure which is formed by a second supporting base 9, a metal connecting shaft 10, an elastic buckle 11, a spring 13, a rubber strip 14 and an anti-rotation and falling-off piece 15, when the floating collar shell 1 is used, the floating collar shell 1 is sleeved on the outer wall of a casing of an oil extractor, the metal connecting shaft 10 with the spring 13 and a metal blocking piece 12 in the floating collar shell 1 is clamped into the butt-joint sleeve to be connected and fixed with the adjacent sleeves, and after the clamping is carried out, the elastic buckle 11 is clamped in the other sleeve through the elasticity of the upper end of the elastic buckle to prevent the elastic buckle from falling off, and the bottom of the inner wall of the floating hoop shell 1 is provided with a rubber strip 14 with an anti-slip sheet 15, so that the device is installed on a sleeve and is not easy to slide and rotate, the phenomenon of conduit connection fracture is caused, and the protection performance of the device is improved.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the record of description and attached drawing.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a from locking-type float collar float shoe, includes float collar casing (1) and float collar casing (2), its characterized in that, the edge of float collar casing (1) outer wall bottom is seted up flutedly, the inner wall block of recess is equipped with joint strip (3), the fixed flange (4) that is equipped with in edge of joint strip (3) inner wall one side, and the one side of flange (4) outer wall and the bottom contact of float collar casing (1), the intermediate position cover of joint strip (3) outer wall is equipped with metal tighrening ring (5), the both ends of metal tighrening ring (5) are all fixed and are equipped with the stationary blade, two the screw has all been seted up to one side of stationary blade, two the inner wall of screw all alternates and is equipped with fixing bolt (6), and the both ends of fixing bolt (6) outer wall respectively with the inner wall threaded connection of two screws.

2. The self-locking float collar and float shoe as claimed in claim 1, wherein the outer wall of one end of the fixing bolt (6) is sleeved with a fixing nut (7), and the outer wall of the fixing bolt (6) is in threaded connection with the inner wall of the fixing nut (7).

3. The self-locking float collar and float shoe as claimed in claim 1, wherein a first supporting base (8) is fixedly arranged at the edge of one side of the inner wall of the float collar housing (2), a clamping hole is formed in the middle of one side of the first supporting base (8), and a second supporting base (9) is fixedly arranged in the middle of the inner wall of the float collar housing (1).

4. The self-locking float collar and float shoe as claimed in claim 3, wherein a metal connecting shaft (10) is fixedly arranged at the middle position of the top end of the second supporting base (9), and elastic buckles (11) are respectively inserted and arranged at two sides of one end of the outer wall of the metal connecting shaft (10).

5. The self-locking float collar and float shoe as claimed in claim 4, wherein a metal blocking piece (12) is sleeved on one side of the outer wall of the metal connecting shaft (10), the inner wall of the metal blocking piece (12) is fixedly connected with the outer wall of the metal connecting shaft (10), a spring (13) is sleeved on one side of the outer wall of the metal connecting shaft (10), one end of the spring (13) is fixedly connected with the top of the second supporting base (9), and the other end of the spring (13) is fixedly connected with one side of the metal blocking piece (12).

6. The self-locking floating collar and floating shoe as claimed in claim 5, characterized in that a rubber strip (14) is fixedly arranged at the edge of one end of the inner wall of the floating collar shell (1), and an anti-skid sheet (15) is fixedly arranged on the inner wall of the rubber strip (14).