CN215169847U

CN215169847U - Downhole tool clamping device

Info

Publication number: CN215169847U
Application number: CN202120908608.XU
Authority: CN
Inventors: 杨文博
Original assignee: Yanchang Oil Field Co Ltd
Current assignee: Yanchang Oil Field Co Ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2021-12-14
Anticipated expiration: 2031-04-29

Abstract

The utility model discloses a downhole tool clamping device, including lower ring body, lower ring body is the annular shape, sets up the ring body directly over the ring body down, goes up the ring body and is the same with lower ring body size, it all sets up the boss with the radial outer surface relative position of lower ring body to go up the ring body, go up and correspond the welding steel band between the boss of ring body and lower ring body, the through-hole is radially laid to lower ring body, through-hole threaded connection lead screw, the lead screw runs through down the ring body and extends to the centre of a circle, the lead screw is close to the one end link plate in the lower ring body centre of a circle, the lead screw is kept away from the one end in the lower ring body centre of a circle and is set up rotatory handle. The utility model has the advantages of simple overall structure, the practicality is strong, and it is not strong to have solved current clamping device stability, and the limited problem of centre gripping scope has improved the stability when centre gripping.

Description

Downhole tool clamping device

Technical Field

The utility model belongs to the technical field of oil borehole operation equipment, a instrument clamping device in pit is related to.

Background

Oil and natural gas bury in the oil gas layer of tens of meters to several kilometers underground, want the oil well for establishing an oil gas passageway between ground and underground oil gas layer, extract oil and natural gas, in case instruments such as drill bit easily drop in the inside of oil well in the exploitation in-process, prior art accomplishes the work of lifting by crane with the help of anchor clamps and loop wheel machine usually, instrument clamping device in the pit adopts claw type anchor clamps to realize the clamping effect mostly, clamping device can't carry out the centre gripping to the strange drill bit of shape or instrument, compatibility is relatively poor, clamping range is limited, the condition that the anchor clamps pine takes off to lead to the instrument drill bit to drop easily appears, the effect of centre gripping is not stable enough, there is certain limitation during the use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a downhole tool clamping device has solved current clamping device stability not strong enough, the problem that the centre gripping scope is limited.

The utility model provides an adopted technical scheme is, an instrument clamping device in pit, including lower ring body, lower ring body is the annular shape, set up the ring body directly over the lower ring body, it is the same with lower ring body size to go up the ring body, it all sets up the boss with the radial outside surface relative position of lower ring body to go up the ring body, go up and correspond the welding steel band between the boss of ring body and lower ring body, the through-hole is radially laid to lower ring body, through-hole threaded connection lead screw, the lead screw runs through down the ring body and extends to the centre of a circle, the lead screw is close to the one end link plate in the lower ring body centre of a circle, the lead screw is kept away from the one end in the lower ring body centre of a circle and is set up rotatory handle.

The utility model is also characterized in that,

the through holes distributed in the radial direction of the lower ring body are arranged in a staggered mode with the reinforcing blocks.

And a reinforcing rod is arranged between the two opposite steel belts.

The outer part of the upper ring body is provided with a through hole.

The through hole is located the external one end of lower ring and sets up the internal thread seat, and the through hole is located the internal one end of lower ring and sets up the support, welds the internal thread ring on the support, and through hole and internal thread seat, internal thread ring all pass through the female connection lead screw.

A turntable is arranged between the screw rod and the connecting clamp plate.

The end part of the clamping plate close to the circle center of the lower ring body is of a concave structure.

The beneficial effects of the utility model are that, the utility model discloses a combine last ring body and lower ring body to be in the same place, through the inside anchor clamps that are equipped with impulse type of ring body under, be equipped with the space that can hold drill bit or other instruments between last ring body and the lower ring body, put into the first half of instrument between last ring body and lower ring body, thereby when the instrument of centre gripping irregular shape, the different steady centre gripping cylindrical drill bit or irregular shape's instrument of coming of the reach of utilizing the lead screw, it is not strong enough to have solved current clamping device stability, the problem that the centre gripping scope is restricted, improved the compatibility among the clamping process in the very big degree, the convenience is stronger.

Drawings

Fig. 1 is a schematic structural view of a downhole tool clamping device of the present invention;

fig. 2 is a bottom view of a lower ring body of a downhole tool clamping device of the present invention;

FIG. 3 is a schematic view of a reinforcement bar structure of a downhole tool clamping device of the present invention;

fig. 4 is a partially enlarged view of a in fig. 3.

In the figure, 1, an upper ring body, 2, a lower ring body, 3, a steel belt, 4, a reinforcing block, 5, a reinforcing rod, 6, a through hole, 7, a drill bit, 8, an internal thread seat, 9, a screw rod, 10, a rotating handle, 11, a rotating disc, 12, a clamping plate, 13, a bracket and 14, an internal thread ring.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

The utility model relates to a downhole tool clamping device, as shown in figure 1, including lower ring body 2, lower ring body 2 is the annular shape, set up ring body 1 directly over lower ring body 2, it is the same with lower ring body 2 size to go up ring body 1, it all sets up boss 4 with the radial surface relative position of lower ring body 2 to go up ring body 1, it corresponds welding steel band 3 to go up between boss 4 of ring body 1 and lower ring body 2, the through-hole is radially laid to lower ring body 2, through-hole threaded connection lead screw 9, lead screw 9 runs through down ring body 2 and extends to the centre of a circle, lead screw 9 is close to the one end connecting clamp 12 in the centre of a circle of lower ring body 2, the one end in the centre of a circle of ring body 2 sets up rotatory handle 10 under lead screw 9 keeps away from.

Through-hole and the crisscross setting of boss 4 that lay of ring body 2 footpath down for the atress structure is more reasonable between lead screw 9 and the steel band 3, thereby leads to ring body 2 atress more even down, and the practicality is stronger.

Set up stiffener 5 between two relative steel bands 3, as shown in fig. 3, the utility model discloses an embodiment sets up four lead screws 9, and stiffener 5 is the X shape, through stiffener 5 that is equipped with between steel band 3, has improved intensity between the steel band 3, avoids appearing the condition of rocking at the in-process that clamping device promoted, and stability is stronger.

The outer part of the upper ring body 1 is provided with a through hole 6 which is convenient for connecting an external rope or a hanging device.

The through-hole is located the outside one end of ring body 2 down and sets up interior screw thread seat 8, as shown in fig. 4, the through-hole is located the inside one end of ring body 2 down and sets up support 13, welds interior screw thread ring 14 on the support 13, and through-hole and interior screw thread seat 8, interior screw thread ring 14 all bear lead screw 9 with inside simultaneously from the through-hole outside of ring body 2 down to intensity when having improved the use.

Set up carousel 11 between lead screw 9 and the splice plate 12, the tip that splice plate 12 is close to the 2 centre of a circle of lower ring body is the indent structure, and carousel 11 is used for the 12 angles of solid fixed splint, promotes angle adaptability and clamping stability when irregular instrument centre gripping through rotatable carousel 11 splice screw 9 and splint 12, and after 7 or outside instruments at splint 12 centre gripping drill bits, continuously rotate lead screw 9 and apply the clamp force with this. As shown in figure 2, the cylindrical drill bit 7 is clamped and placed in the clamping plates 12, and the drill bit 7 can be hung on the clamping plates 12, so that the purpose of pulling up the drill bit 7 is achieved, the situation that the drill bit is loosened easily due to clamping by using a clamp is avoided, and the stability during clamping is greatly improved.

The utility model relates to a clamping device's of downhole tool theory of operation: the device is formed by combining an upper ring body 1 and a lower ring body 2, the space between the upper ring body 1 and the lower ring body 2 is utilized to place the upper half part of a drill bit 7 or a tool, a plurality of screw rods 9 are arranged in the lower ring body 2, the screw rods 9 are mutually independent, a clamping plate 12 is attached to the drill bit 7 or the tool by sequentially rotating the screw rods 9, the drill bit 7 or the tool with an irregular shape is stably clamped by utilizing different telescopic distances of the screw rods 9, and the compatibility in the clamping process is greatly improved; an internal thread seat 8 and an internal thread ring 14 are respectively arranged inside and outside the lower ring body 2, and a screw rod 9 is inserted into the internal thread seat 8 and the internal thread ring 14, so that the use strength is improved; go up and set up steel band 3 and stiffener 5 between ring body 1 and the lower ring body 2, avoid the in-process that clamping device promoted to appear the condition of rocking, stability is stronger.

The utility model relates to a clamping device of downhole tool's working process does: the upper part of the drill bit 7 or the tool is placed between the upper ring body 1 and the lower ring body 2, then the four screw rods 9 are sequentially rotated, the clamping plate 12 is attached below the drill bit 7 or the tool, the main clamping plate 12 is clamped by means of the protruding part of the drill bit 7 or the outside of the tool, when the upper ring body 1 and the lower ring body 2 ascend, the drill bit 7 or the tool can be hung on the clamping plate 12, and therefore the drill bit 7 or the tool is pulled up to complete clamping operation.

The utility model discloses a device is solved and is had petroleum downhole tool clamping device on the market now and easily appear the anchor clamps pine and take off the condition that leads to the instrument to drop, and the effect of centre gripping is not stable enough, has certain limitation during the use, the utility model discloses a clamping device overall structure is simple compact, can carry out the centre gripping to the drill bit or the instrument of the strange shape, has improved the compatibility among the centre gripping process in the very big degree, makes things convenient for the staff to use, and the convenience is stronger, has reduced maintenance and cost.

Claims

1. A downhole tool clamping device is characterized by comprising a lower ring body (2), wherein the lower ring body (2) is in a circular ring shape, an upper ring body (1) is arranged right above the lower ring body (2), the upper ring body (1) and the lower ring body (2) have the same size, reinforcing blocks (4) are arranged at the opposite positions of the radial outer surfaces of the upper ring body (1) and the lower ring body (2), a steel belt (3) is correspondingly welded between the reinforcing blocks (4) of the upper ring body (1) and the lower ring body (2), the lower ring body (2) is radially provided with through holes which are in threaded connection with a screw rod (9), the screw rod (9) penetrates through the lower ring body (2) and extends towards the circle center, one end of the screw rod (9) close to the circle center of the lower ring body (2) is connected with the clamping plate (12), and a rotary handle (10) is arranged at one end of the screw rod (9) far away from the circle center of the lower ring body (2).

2. A downhole tool clamping device according to claim 1, wherein the radially arranged through holes of the lower ring body (2) are staggered with the reinforcement blocks (4).

3. A downhole tool clamping device according to claim 1, wherein a reinforcement bar (5) is arranged between the two opposing steel strips (3).

4. A downhole tool clamping device according to claim 1, wherein the upper ring body (1) is externally provided with perforations (6).

5. The downhole tool clamping device according to claim 1, wherein an internal thread seat (8) is arranged at one end of the through hole, which is located outside the lower ring body (2), and a support (13) is arranged at one end of the through hole, which is located inside the lower ring body (2), and an internal thread ring (14) is welded on the support (13), and the through hole, the internal thread seat (8) and the internal thread ring (14) are connected with the screw rod (9) through internal threads.

6. A downhole tool clamping device according to claim 1, wherein a rotary disc (11) is arranged between the screw spindle (9) and the connecting jaw (12).

7. A downhole tool clamping device according to claim 1, wherein the end of the clamping plate (12) near the centre of the lower ring (2) is concave.