CN213297865U - Flexible contact type underground stabilizer - Google Patents

Abstract

The utility model discloses a flexible contact is stabilizer in pit, including outer shell pipe, outer shell pipe surface has seted up spacing spout, stopper and No. two stoppers are installed to the inside thread slipping of spacing spout, the eye-splice is equipped with between stopper and No. two stoppers and rights the soft board, it all inlays at the soft board both ends and has linked up the hasp to right, link up through bolted connection between hasp and a stopper and No. two stoppers, the outer shell pipe both ends have all welded linking flange. The utility model discloses a positioning bolt of stopper and No. two stopper surface rotation installations, the convenience is fixed a position the regulation to stopper and No. two stopper intervals, thereby utilizes interval adjustment between stopper and No. two stoppers to right the soft board crookedness, so that utilize to right the soft board and support the location to the wall of a well, through the inside inlayed axle sleeve of shell pipe, can drive the inside pivot cover of inlaying of axle sleeve and rotate, makes things convenient for the drill bit pivot of the inside eye-splice of pivot cover to rotate.

Description

Flexible contact type underground stabilizer

Technical Field

The utility model relates to a relevant technical field of stabilizer in the pit specifically is a flexible contact stabilizer in pit.

Background

A stabilizer (also called centralizer) is a tool for stabilizing a downhole drilling tool and playing a role in preventing deviation. The device is connected to a section of drill rod string near a large-diameter drilling tool and used for stabilizing the drilling direction, and is an important tool for preventing well deviation change in petroleum, natural gas and geological exploration drilling engineering.

Since the three-helix stabilizer is used in each oil and gas field in China since 1983, the structure of the three-helix stabilizer is basically unchanged. Most of the existing triple-helix stabilizers adopt a certain number of hard alloy blocks embedded on a re-helix strip to increase the surface wear resistance. However, the hard alloy is very serious in fast falling off, and after the hard alloy falls into a well, the drilling speed is influenced, the service life of a drill bit is shortened, and the drilling cost is increased. Therefore, the spiral structure, the body structure and the shape of the spiral groove of the existing stabilizer can be optimally designed, and the load condition of the spiral part of the stabilizer is improved, so that the fatigue life of the stabilizer is prolonged. The newly developed stabilizer mainly develops the trend of improving the abrasion resistance of a working section and the connection reliability of a threaded joint, and the stabilizing function of the stabilizer is mainly to reduce the radial and axial severe vibration of an elastic system of a drill string in a hole; the eccentric wear of the drill bit and the drill rod is reduced; the coring quality is ensured; preventing well deviation or using manual directional drilling. The stabilizer is of a relatively simple construction and is a large diameter joint with rib segments (straight or helical). The stabilizer can be divided into a drill column type and a well bottom type.

But present stabilizer is mostly solid hard structure, can't satisfy some user demands in the pit, and its structure of rightting simultaneously can't be adjusted to can't right stably according to the well of difference. To this end, we propose a flexible contact downhole stabilizer.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flexible contact is stabilizer in pit to solve present stabilizer among the above-mentioned background art and mostly be the solid hard structure, can't satisfy some user demands in the pit, its structure of rightting can't be adjusted simultaneously, thereby can't right stable problem according to the well of difference.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a flexible contact is stabilizer in pit, includes outer shell pipe, outer shell pipe surface has seted up spacing spout, the inside thread slipping of spacing spout installs No. one stopper and No. two stoppers, the eye-splice is equipped with between No. one stopper and No. two stoppers and rights the soft board, it all inlays at the soft board both ends and has linked up the hasp to right, link up through bolted connection between hasp and No. one stopper and No. two stoppers, outer shell pipe both ends have all welded and have linked up the flange.

Preferably, a positioning bolt is rotationally installed on the surfaces of the first limiting block and the second limiting block, one end of the positioning bolt is located inside the limiting sliding groove, the spacing between the first limiting block and the second limiting block is conveniently positioned and adjusted through the positioning bolt rotationally installed on the surfaces of the first limiting block and the second limiting block, and therefore the flexibility of the righting soft board is adjusted by utilizing the spacing between the first limiting block and the second limiting block, and the well wall is supported and positioned by the righting soft board.

Preferably, the inside axle sleeve that inlays of shell pipe, the inside pivot cover that inlays of axle sleeve, through the inside inlayed axle sleeve of shell pipe, can drive the inside inlayed pivot cover of axle sleeve and rotate, make things convenient for the drill bit pivot of the inside eye-splice of pivot cover rotatory.

Preferably, right soft board inside including flame retardant fiber board and elastic fiber board, the pressfitting has metal mesh board between flame retardant fiber board and the elastic fiber board, through the flame retardant fiber board and the elastic fiber board of right soft board, has strengthened whole flame retardant efficiency and the elasticity of right soft board, satisfies the user demand of right soft board under the different environment, and through the metal mesh board of pressfitting between flame retardant fiber board and the elastic fiber board, can improve whole toughness and the intensity of righting the soft board, avoid right the soft board and appear the condition emergence that fracture influences the use of whole device.

Preferably, the soft board surface of righting inlays and has the reinforcement sand grip, and through the reinforcement sand grip of righting the soft board surface and inlaying, reinforcing when conveniently improving the soft board intensity of righting rights soft board surface friction, improves the installation stability of whole stabilizer.

Preferably, the spring supporting pad is installed to the buckle between soft board of righting and the shell pipe, and the spring supporting pad through the buckle installation between the soft board of righting and the shell pipe is convenient to be supported righting the soft board to avoid righting the crooked back of soft board and the extrusion of wall of a well contact and cause to right the less condition emergence that leads to the fracture influence stability of soft board holding power.

The utility model provides a flexible contact is stabilizer in pit possesses following beneficial effect:

(1) the utility model discloses a positioning bolt of stopper and No. two stopper surface rotation installations, the convenience is fixed a position the regulation to stopper and No. two stopper intervals, thereby utilizes interval adjustment between stopper and No. two stoppers to right the soft board crookedness, so that utilize to right the soft board and support the location to the wall of a well, through the inside inlayed axle sleeve of shell pipe, can drive the inside pivot cover of inlaying of axle sleeve and rotate, makes things convenient for the drill bit pivot of the inside eye-splice of pivot cover to rotate.

(2) The utility model enhances the flame retardant effect and elasticity of the whole soft board through the flame retardant fiber board and the elastic fiber board of the soft board, meets the use requirements of the soft board under different environments, moreover, the toughness and the strength of the whole soft righting plate can be improved through the metal mesh plate pressed between the flame-retardant fiber plate and the elastic fiber plate, the condition that the use of the whole device is influenced by the fracture of the soft righting plate is avoided, the reinforcing convex strips embedded on the surface of the soft righting plate can conveniently improve the strength of the soft righting plate, enhance the surface friction of the soft righting plate, improve the installation stability of the whole stabilizer, the spring supporting pad which is arranged between the soft righting board and the shell pipe in a buckling way is convenient to support the soft righting board, therefore, the condition that the supporting force of the centralizing soft plate is small to cause fracture influence stability due to the fact that the centralizing soft plate is contacted and extruded with the well wall after being bent is avoided.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the casing tube of the present invention;

FIG. 3 is the internal structure diagram of the soft board for centralizing the body of the utility model;

fig. 4 is a top view of the surface structure of the soft board for righting according to the present invention.

In the figure: 1. a housing tube; 2. a limiting chute; 3. a first limiting block; 4. a second limiting block; 5. engaging the hasp; 6. righting the soft board; 7. an elastic fiberboard; 8. a flame retardant fiberboard; 9. a metal mesh plate; 10. positioning the bolt; 11. connecting flanges; 12. a shaft sleeve; 13. a rotating shaft sleeve; 14. reinforcing the convex strips; 15. the spring supports the pad.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1-4, the utility model provides a technical scheme: the utility model provides a flexible contact is stabilizer in pit, includes, including outer shell pipe 1, outer shell pipe 1 surface has seted up spacing spout 2, 2 inside slipbuckles of spacing spout install No. 3 stoppers and No. two stoppers 4, the eye-splice is equipped with between No. 3 stoppers and No. two stoppers 4 and rights soft board 6, it all inlays at 6 both ends of soft board and has linking hasp 5 to right, link up through bolted connection between hasp 5 and No. 3 stoppers and No. two stoppers 4, linking flange 11 has all been welded at 1 both ends of outer shell pipe.

Preferably, No. 3 stopper and No. 4 stopper surfaces equal swivelling joints of stopper have positioning bolt 10, positioning bolt 10 one end is located 2 insides of spacing spout, and through No. 3 stopper and No. 4 stopper surface swivelling joints's positioning bolt 10, the convenience is fixed a position the regulation to No. 3 stopper and No. 4 stoppers intervals to utilize interval adjustment between No. 3 stoppers and No. 4 stoppers to right soft board 6 crookedness, so that support the location to the wall of a well with righting soft board 6.

Preferably, shell pipe 1 is inside to be inlayed and to have axle sleeve 12, axle sleeve 12 is inside to be inlayed and to have pivot cover 13, through shell pipe 1 is inside inlayed axle sleeve 12, can drive the inside inlayed pivot cover 13 of axle sleeve 12 and rotate, makes things convenient for the drill bit pivot of the inside eye-splice of pivot cover 13 to rotate.

Preferentially, it is inside including fire-retardant fiber board 8 and elastic fiber board 7 to right soft board 6, the pressfitting has metal mesh board 9 between fire-retardant fiber board 8 and the elastic fiber board 7, through right fire-retardant fiber board 8 and the elastic fiber board 7 of soft board 6, whole flame retardant efficiency and the elasticity of rightting soft board 6 have been strengthened, the user demand of righting soft board 6 under the different environment is satisfied, and through the metal mesh board 9 of pressfitting between fire-retardant fiber board 8 and the elastic fiber board 7, can improve whole toughness and the intensity of righting soft board 6, avoid righting soft board 6 the condition emergence that fracture influences the use of whole device.

Preferably, the reinforcing convex strips 14 are embedded in the surface of the soft righting plate 6, and the reinforcing convex strips 14 embedded in the surface of the soft righting plate 6 can conveniently improve the strength of the soft righting plate 6, enhance the surface friction force of the soft righting plate 6 and improve the installation stability of the whole stabilizer.

Preferentially, right the buckle between soft board 6 and the outer shell pipe 1 and install spring supporting pad 15, through right the spring supporting pad 15 of buckle installation between soft board 6 and the outer shell pipe 1, the convenience is supported righting soft board 6 to avoid righting the crooked back of soft board 6 and the extrusion of wall of a well contact and cause to right the less condition emergence that leads to the fracture influence stability of soft board 6 holding power.

The working principle is that the distance between the first limiting block 3 and the second limiting block 4 is conveniently positioned and adjusted through the positioning bolt 10 which is rotatably installed on the surface of the first limiting block 3 and the second limiting block 4, so that the bending degree of the soft plate 6 is adjusted by utilizing the distance between the first limiting block 3 and the second limiting block 4, the well wall is supported and positioned by the soft plate 6, the shaft sleeve 12 embedded in the outer shell pipe 1 can drive the rotating shaft sleeve 13 embedded in the shaft sleeve 12 to rotate, the rotating shaft of the drill bit inserted and buckled in the rotating shaft sleeve 13 is convenient to rotate, the flame retardant fiber plate 8 and the elastic fiber plate 7 of the soft plate 6 are straightened, the flame retardant effect and the elasticity of the whole soft plate 6 are enhanced, the use requirements of the soft plate 6 under different environments are met, and the toughness and the strength of the whole soft plate 6 are improved through the metal mesh plate 9 pressed between the flame retardant fiber plate 8 and the elastic fiber plate 7, avoid righting the soft board 6 the condition emergence that the fracture influences the whole device to use, through righting the reinforcement sand grip 14 that the soft board 6 surface was inlayed, strengthen righting soft board 6 surface friction when conveniently improving righting soft board 6 intensity, improve the installation stability of whole stabilizer, spring support pad 15 through righting the buckle installation between soft board 6 and the outer shell pipe 1, the convenience supports righting soft board 6, thereby avoid righting the soft board 6 crooked back and causing to right the less condition emergence that leads to the fracture influence of soft board 6 holding power with wall of a well contact extrusion.

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 (6)

1. A flexible contact downhole stabilizer comprising a housing tube (1), characterized in that: spacing spout (2) have been seted up on shell pipe (1) surface, stopper (3) and No. two stopper (4) are installed to inside thread slipping of spacing spout (2), the eye-splice is equipped with between stopper (3) and No. two stopper (4) and rights soft board (6), it all inlays at soft board (6) both ends and has linking hasp (5) to right, link up between hasp (5) and stopper (3) and No. two stopper (4) through bolted connection, all weld at shell pipe (1) both ends has linking flange (11).

2. A flexible contact downhole stabilizer according to claim 1, wherein: no. one stopper (3) and No. two stopper (4) equal rotatory mounting in surface have positioning bolt (10), positioning bolt (10) one end is located inside spacing spout (2).

3. A flexible contact downhole stabilizer according to claim 1, wherein: a shaft sleeve (12) is embedded in the shell pipe (1), and a rotating shaft sleeve (13) is embedded in the shaft sleeve (12).

4. A flexible contact downhole stabilizer according to claim 1, wherein: the soft righting board (6) comprises a flame-retardant fiber board (8) and an elastic fiber board (7), and a metal mesh plate (9) is pressed between the flame-retardant fiber board (8) and the elastic fiber board (7).

5. A flexible contact downhole stabilizer according to claim 1, wherein: and reinforcing convex strips (14) are embedded on the surface of the centralizing soft plate (6).

6. A flexible contact downhole stabilizer according to claim 1, wherein: a spring supporting pad (15) is arranged between the righting soft board (6) and the shell pipe (1) in a buckling mode.

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