CN211342811U

CN211342811U - Well drilling casing with anti-abrasion function

Info

Publication number: CN211342811U
Application number: CN201921499996.XU
Authority: CN
Inventors: 陈颖超
Original assignee: Chengde Petroleum College
Current assignee: Chengde Petroleum College
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2020-08-25
Anticipated expiration: 2029-09-10

Abstract

The utility model discloses a casing pipe for well drilling with anti-wear function in the technical field of well drilling, which comprises an outer collar, wherein the inner wall of the outer collar is provided with an inner collar, an interlayer of the outer collar and the inner collar is provided with a hollow pipe, the inner wall of the hollow pipe is provided with an inner thread collar, the inner wall of the inner thread collar is in threaded connection with a fastening screw rod, one end of the fastening screw rod extends to the inner side of the inner collar and is provided with a fastening pressure plate, the joint of the fastening screw rod and the fastening pressure plate is provided with a pin shaft, the other end of the fastening screw rod extends to the outer side of the outer collar and is connected with a nut, the surface of a drill rod is sleeved with the outer collar and the inner collar, the outer collar and the inner collar are in threaded connection with the fastening screw rod, the fastening pressure plate can be driven by the fastening screw, the service life of the drill rod is ensured.

Description

Well drilling casing with anti-abrasion function

Technical Field

The utility model relates to a well drilling technical field specifically is a sleeve pipe for well drilling with abrasionproof function.

Background

In the drilling process, the drill pipe body is inevitably contacted with the rock on the well wall, so that the aluminum alloy drill pipe body is abraded or scratched, and even if a large space is left between the pipe column and the well wall, the scratch or the erosion pit is formed on the surface of the alloy drill pipe body due to the high-speed flowing rock debris in the mine. The damage seriously affects the safety of the aluminum alloy drill pipe body, particularly, the stress concentration effect generated at the damaged part promotes the generation of fatigue cracks, the fatigue life of the drill pipe is greatly reduced, and the risk of fatigue failure of the drill pipe is improved. To this end, a casing for drilling with a wear protection function is proposed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sleeve pipe for well drilling with abrasionproof function to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a sleeve pipe for well drilling with abrasionproof function, includes the outer lantern ring, the inner wall of outer lantern ring sets up the interior lantern ring, the outer lantern ring sets up the hollow tube with the intermediate layer of interior lantern ring, the inner wall of hollow tube sets up the internal thread lantern ring, the inner wall threaded connection fastening screw of the internal thread lantern ring, fastening screw's one end extends to the inboard of the interior lantern ring and sets up the fastening clamp plate, fastening screw and fastening clamp plate's junction sets up the round pin axle, fastening screw's the other end extends to the outside of outer lantern ring and connects the nut.

Furthermore, the inner wall of the inner lantern ring is provided with an inner groove matched with the fastening pressing plate, and the fastening pressing plate is movably embedded into the inner wall of the inner groove.

Furthermore, the outer wall of the outer collar is provided with a limiting through groove matched with the nut, and the nut is movably embedded into the inner wall of the limiting through groove.

Furthermore, the end face, far away from the outer wall of the outer sleeve ring, of the nut is provided with a blind hole, the inner wall of the blind hole is provided with four groups of limiting clamping grooves, and the nut is movably connected with clamping rods matched with the four groups of limiting clamping grooves.

Furthermore, reinforcing rib plates are arranged in an annular array in an interlayer of the outer sleeve ring and the inner sleeve ring, and the reinforcing rib plates are triangular stainless steel plates.

Furthermore, the opposite end faces of the two groups of fastening pressing plates are provided with fastening plastic lantern rings, and the radian of the two groups of fastening pressing plates is the same as that of the inner lantern ring.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses cup joint outer lantern ring and interior lantern ring on the surface of drilling rod, outer lantern ring and interior lantern ring threaded connection fastening screw, fastening screw can drive fastening clamp plate pressfitting and fix the drilling rod on the surface of drilling rod, satisfies the drilling rod of fixed different external diameters size simultaneously, effectively strengthens drilling rod abrasionproof function, guarantees the life of drilling rod.

Drawings

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

FIG. 2 is a schematic view of the structure of the outer collar and the inner collar of the present invention;

fig. 3 is a schematic view of the nut structure of the present invention.

In the figure: 1. an outer collar; 2. an inner collar; 3. a hollow tube; 4. an internal thread collar; 5. fastening a screw rod; 6. a pin shaft; 7. fastening a pressure plate; 8. a limiting through groove; 9. an inner groove; 10. a nut; 11. blind holes; 12. limiting clamping grooves.

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 work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a sleeve pipe for well drilling with abrasionproof function, including outer lantern ring 1, lantern ring 2 in the inner wall setting of outer lantern ring 1, outer lantern ring 1 sets up hollow tube 3 with the intermediate layer of interior lantern ring 2, the inner wall of hollow tube 3 sets up internal thread lantern ring 4, the inner wall threaded connection fastening screw 5 of internal thread lantern ring 4, fastening screw 5's one end extends to the inboard of interior lantern ring 2 and sets up fastening clamp plate 7, fastening screw 5 sets up round pin axle 6 with fastening clamp plate 7's junction, the effect of round pin axle 6 lies in fastening clamp plate 7 pressfitting behind the surface of drilling rod, can continue rotatory fastening screw 5 and fastening clamp plate 7 and not move thereupon, fastening screw 5's the other end extends to the outside of outer lantern ring 1 and connects nut 10.

The inner wall of the inner sleeve ring 2 is provided with an inner groove 9 matched with the fastening pressure plate 7, and the fastening pressure plate 7 is movably embedded into the inner wall of the inner groove 9, so that the fastening pressure plate 7 can be embedded into the inner groove 9 when the inner sleeve ring 2 and the outer sleeve ring 1 are not used, and the outer sleeve ring 1 and the inner sleeve ring 2 are not subjected to resistance when the fastening pressure plate 7 is protected and sleeved on a drill rod;

the outer wall of the outer collar 1 is provided with a limiting through groove 8 matched with the screw cap 10, and the screw cap 10 is movably embedded into the inner wall of the limiting through groove 8, so that the screw cap 10 is embedded into the inner wall of the limiting through groove 8 when the fastening screw 5 rotates to the maximum distance;

the end face, far away from the outer wall of the outer sleeve ring 1, of the nut 10 is provided with a blind hole 11, the inner wall of the blind hole 11 is provided with four groups of limiting clamping grooves 12, the nut 10 is movably connected through clamping rods matched with the four groups of limiting clamping grooves 12, and the clamping rods are clamped in the four groups of limiting clamping grooves 12, so that the nut 10 can be driven to drive the fastening screw 5 to rotate more conveniently;

reinforcing rib plates are arranged in an annular array in an interlayer of the outer sleeve ring 1 and the inner sleeve ring 2, the reinforcing rib plates are triangular stainless steel plates, and the overall strength of the outer sleeve ring 1 and the inner sleeve ring 2 can be enhanced through the triangular reinforcing rib plates;

the relative terminal surface of two sets of fastening clamp plates 7 all sets up the fastening plastic lantern ring, and two sets of fastening clamp plates 7 are the same with 2 radians of interior lantern ring for fastening clamp plate 7 is the same with the drilling rod surface radian of pegging graft in interior lantern ring 2, and strengthens stability through fastening plastic lantern ring.

Example (b): the outer wall at the drilling rod is cup jointed to interior lantern ring 2, then through the kelly that matches with nut 10 upper limit draw-in groove 12, drives

nut

10 and 5 rotary motion of fastening screw for fastening screw 5 removes with the 4 threaded connection of internal thread lantern ring, thereby fastening clamp plate 7 pressfitting is fixed the drilling rod on the surface of drilling rod, makes the drilling rod can strengthen its abrasionproof function through outer lantern ring 1 and interior lantern ring 2 at the in-process that uses.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that 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. A well drilling casing with an anti-abrasion function comprises an outer sleeve ring (1), and is characterized in that: the inner wall of outer lantern ring (1) sets up interior lantern ring (2), the intermediate layer of outer lantern ring (1) and interior lantern ring (2) sets up hollow tube (3), the inner wall of hollow tube (3) sets up the internal thread lantern ring (4), the inner wall threaded connection fastening screw (5) of internal thread lantern ring (4), the one end of fastening screw (5) extends to the inboard of interior lantern ring (2) and sets up fastening clamp plate (7), fastening screw (5) and the junction of fastening clamp plate (7) set up round pin axle (6), the other end of fastening screw (5) extends to the outside of outer lantern ring (1) and connects nut (10).

2. A well casing with wear prevention function as claimed in claim 1, wherein: the inner wall of the inner lantern ring (2) is provided with an inner groove (9) matched with the fastening pressing plate (7), and the fastening pressing plate (7) is movably embedded into the inner wall of the inner groove (9).

3. A well casing with wear prevention function as claimed in claim 1, wherein: the outer wall of the outer collar (1) is provided with a limiting through groove (8) matched with the nut (10), and the nut (10) is movably embedded into the inner wall of the limiting through groove (8).

4. A well casing with wear prevention function as claimed in claim 1, wherein: the end face, far away from the outer wall of the outer sleeve ring (1), of the nut (10) is provided with a blind hole (11), the inner wall of the blind hole (11) is provided with four groups of limiting clamping grooves (12), and the nut (10) is movably connected with clamping rods matched with the four groups of limiting clamping grooves (12).

5. A well casing with wear prevention function as claimed in claim 1, wherein: and reinforcing rib plates are arranged in an annular array in an interlayer of the outer sleeve ring (1) and the inner sleeve ring (2), and the reinforcing rib plates are triangular stainless steel plates.

6. A well casing with wear prevention function as claimed in claim 1, wherein: the opposite end faces of the two groups of fastening pressing plates (7) are provided with fastening plastic lantern rings, and the radians of the two groups of fastening pressing plates (7) and the radian of the inner lantern ring (2) are the same.