CN217999513U - Oil pipe centralizer for oil well - Google Patents

Abstract

The utility model discloses an oil pipe centralizer for oil well relates to oil well technical field, including the inner tube, the tighrening ring has been cup jointed through the screw thread to the downside on the outside of inner tube, the equal fixedly connected with nut of opposite end of tighrening ring, the fixed buffer tube that has cup jointed in the outside middle part of inner tube, the fixed outer tube that has cup jointed in the outside of buffer tube, the swivel becket has been cup jointed through the bearing in the outside of outer tube, the rectangle mouth has been seted up to the lateral wall upper and lower side of inner tube, the rectangle mouth is connected with the stripper plate through the connecting axle, the outside of stripper plate has all been opened with the opposite end middle part of connecting axle and has been connected the round hole, the internal connection of round hole has the spring, the outside fixed connection of spring is at the inside wall of outer tube. This oil pipe centralizer for oil well can make the installation of centralizer more stable to can also cushion outside vibrations through being equipped with the buffer tube, thereby the oil pipe that can effectual protection grafting.

Description

Oil pipe centralizer for oil well

Technical Field

The utility model relates to an oil well technical field especially relates to an oil pipe centralizer for oil well.

Background

Because of the requirements for centering measurement, long and thin structure, support, large underground vibration amplitude and the like, one or more centralizers are often required to be mounted on the components such as a probe tube, a connector and the like in the logging-while-drilling instrument so as to achieve the effects of centralizing, centering, damping and overflowing. The structure of centralizer mainly includes: the centralizer comprises a centralizer base body, a plurality of supporting ribs fixed on the centralizer base body and a fixing structure used for fixing the centralizer base body on a part to be centralized, wherein a slurry channel is formed between adjacent supporting ribs.

The existing centralizer is installed in a mode that the existing centralizer is connected with a part to be righted through fixing structures such as set screws and screw connections, the installation mode is strict in structural requirements of the part to be righted, installation positions cannot be freely selected, and external vibration cannot be buffered, so that the oil pipe centralizer for the oil well is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an oil pipe centralizer for an oil well. Its advantage lies in can making the installation of centralizer more stable to can also cushion outside vibrations through being equipped with the buffer tube, thereby the oil pipe that can effectual protection is pegged graft.

In order to realize the purpose, the utility model adopts the following technical scheme:

an oil pipe centralizer for an oil well comprises an inner pipe, wherein fastening rings are sleeved on the upper side and the lower side of the outer side of the inner pipe through threads, nuts are fixedly connected to the opposite ends of the fastening rings, a buffer pipe is fixedly sleeved in the middle of the outer side of the inner pipe, an outer pipe is fixedly sleeved on the outer side of the buffer pipe, and a rotating ring is sleeved on the outer side of the outer pipe through a bearing;

the inner tube is characterized in that rectangular openings are formed in the upper side and the lower side of the side wall of the inner tube, the rectangular openings are connected with an extrusion plate through a connecting shaft, connecting round holes are formed in the outer side of the extrusion plate and the middle of the opposite end of the connecting shaft, springs are connected inside the round holes, and the outer sides of the springs are fixedly connected to the inner side wall of the outer tube.

Through the technical scheme: equipment is when using, at first twist the manual outside displacement that moves of tighrening ring, then under the pulling force of spring, can make each stripper plate to the outside displacement, then peg graft oil pipe inboard at the inner tube, a centralizer is cup jointed at one section distance in the oil pipe outside, peg graft oil pipe behind the inner tube inboard, then the instrument through the outside rotates the nut, make two tighrening ring relative displacement, because the outside of stripper plate is the inclined plane, after the tighrening ring relative displacement, can extrude the stripper plate outside, thereby make the stripper plate to the inside side displacement, thereby make the inboard extrusion oil pipe lateral wall of pegging graft of stripper plate, thereby fix the position of inner tube in the oil pipe outside, can fix the position of centralizer, and after the installation is accomplished, after the deviation takes place at oil pipe, the outside swivel ring of centralizer at first contacts with oil well pipeline inboard, and the swivel ring can also rotate, thereby can the oil pipe of effectual protection grafting.

The utility model discloses further set up to, the outside of stripper plate is the inclined plane, the stripper plate inboard is circular-arc, and circular-arc centre of a circle and inner tube central point coincidence.

Through the technical scheme: the inner side of the extrusion plate is displaced, and the inserted oil pipe side wall can be extruded, so that the sleeved centralizer is positioned.

The utility model discloses further set up to, the rectangle mouth is opened there are eight, the rectangle mouth is annular array and opens downside on the inner tube.

Through the technical scheme: the rectangular opening is used for installing the extrusion plate.

The utility model discloses further set up as, the distance equals the lateral wall thickness of tighrening ring between inner tube and the outer tube.

Through the technical scheme: the fastening ring can be inserted between the inner tube and the outer tube.

The utility model discloses further set up as, the outside of swivel becket is annular array and opens and has a plurality of triangular grooves.

Through the technical scheme: the rotating ring can rotate.

The utility model discloses it further sets up to, the looks remote site inboard of tighrening ring is equipped with the inclined plane.

Through the technical scheme: the inclined plane can conveniently extrude the extrusion plate.

The beneficial effects of the utility model are that:

this oil pipe centralizer for oil well, overall structure through equipment, a centralizer is cup jointed at one section distance in the oil pipe outside every, peg graft oil pipe in the inside back of inner tube, then rotate the nut through outside instrument, make two tighrening ring relative displacement, because the outside of stripper plate is the inclined plane, after the tighrening ring relative displacement, can extrude the stripper plate outside, thereby make the inboard side displacement of stripper plate, thereby make the inboard extruded oil pipe lateral wall of pegging graft of stripper plate, thereby fixed inner tube is in the position in the oil pipe outside, can fix the position of centralizer, thereby can make the installation of centralizer more stable, and can also cushion outside vibrations through being equipped with the buffer tube, thereby oil pipe that can effectual protection is pegged graft.

Drawings

Fig. 1 is a schematic view of the overall structure of an oil pipe centralizer for an oil well according to the present invention;

fig. 2 is a cross-sectional view of an oil pipe centralizer for an oil well according to the present invention;

fig. 3 is an enlarged view of a portion a in fig. 2 of the oil pipe centralizer for an oil well according to the present invention;

fig. 4 is the utility model provides an oil pipe centralizer's for oil well stripper plate overall structure chart.

In the figure: 1. an inner tube; 2. a fastening ring; 3. a nut; 4. a buffer tube; 5. an outer tube; 6. a rotating ring; 7. a triangular groove; 8. a rectangular opening; 9. a pressing plate; 10. a circular hole; 11. a spring.

Detailed Description

The technical solution of the present patent will be further described in detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the figures, which are based on the orientations and positional relationships shown in the figures, and are used for convenience in describing the patent and for simplicity in description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

The first embodiment,

Referring to fig. 1-4, an oil pipe centralizer for an oil well is disclosed, which comprises an inner pipe 1, wherein fastening rings 2 are sleeved on the upper side and the lower side of the outer side of the inner pipe 1 through threads, nuts 3 are fixedly connected to the opposite ends of the fastening rings 2, a buffer pipe 4 is fixedly sleeved in the middle of the outer side of the inner pipe 1, the buffer pipe 4 can be made of rubber side material, a reinforcing wire ring is inlaid in the buffer pipe 4 to increase the strength of the buffer pipe 4, an outer pipe 5 is fixedly sleeved on the outer side of the buffer pipe 4, and a rotating ring 6 is sleeved on the outer side of the outer pipe 5 through a bearing;

rectangle mouth 8 has been opened to the lateral wall upper and lower side of inner tube 1, rectangle mouth 8 is connected with stripper plate 9 through the connecting axle, stripper plate 9's the outside all opens with the opposite end middle part of connecting axle and has connected round hole 10, the internal connection of round hole 10 has spring 11, and spring 11 is in tensile state all the time, spring 11's outside fixed connection is at the inside wall of outer tube 5.

The centralizer is cup jointed every a section distance in the oil pipe outside, peg graft oil pipe behind 1 inboard in inner tube, then rotate nut 3 through outside instrument, make 2 relative displacement of two tighrening rings, because the outside of stripper plate 9 is the inclined plane, behind 2 relative displacement of tighrening rings, can extrude the 9 outside of stripper plate, thereby make stripper plate 9 to the inboard displacement, thereby make the oil pipe lateral wall of 9 inboard extrusion grafting of stripper plate, thereby fix the position of inner tube 1 in the oil pipe outside, can fix the position of centralizer.

Example II,

Referring to fig. 2 and 3, the outside of stripper plate 9 is the inclined plane, stripper plate 9 inboard is circular-arc, and circular-arc centre of a circle and the coincidence of inner tube 1 central point, rectangle mouth 8 is opened eight, rectangle mouth 8 is annular array and opens on 1 downside of inner tube, and rectangle mouth 8 is for installing the stripper plate, and the inboard displacement in stripper plate 9 looks can extrude the oil pipe lateral wall of pegging graft to fix a position the centralizer that cup joints.

Example III,

Referring to fig. 1, 3 and 4, the distance between the inner tube 1 and the outer tube 5 is equal to the thickness of the side wall of the fastening ring 2, the outer side of the rotating ring 6 is provided with a plurality of triangular grooves 7 in an annular array, the inner side of the opposite end of the fastening ring 2 is provided with an inclined surface, the inclined surface can conveniently extrude the extrusion plate 9, the rotating ring 6 can rotate, and the fastening ring 2 can be inserted between the inner tube 1 and the outer tube 5.

The working principle is as follows: equipment is when using, at first twist the displacement to the manual outside of tighrening ring 2, then under spring 11's pulling force, can make each stripper plate 9 displacement to the outside, then peg graft oil pipe at inner tube 1 inboard, a centralizer is cup jointed at the oil pipe outside every a section distance, peg graft oil pipe behind inner tube 1 inboard, then rotate nut 3 through outside instrument, make two tighrening ring 2 relative displacement, because the outside of stripper plate 9 is the inclined plane, after the tighrening ring 2 relative displacement, can extrude the stripper plate 9 outside, thereby make stripper plate 9 displacement to the inboard, thereby make the inboard oil pipe lateral wall of extrusion grafting of stripper plate 9, thereby fixed inner tube 1 is in the position of the oil pipe outside, can fix the position of centralizer, and after the installation, after oil pipe takes place the deviation, outside swivel ring 6 of centralizer at first contacts with the oil well pipeline inboard, and swivel ring 6 can also rotate, thereby the oil pipe that can effectual protection is pegged graft.

The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.

Claims (6)

1. An oil pipe centralizer for an oil well comprises an inner pipe (1) and is characterized in that fastening rings (2) are sleeved on the upper side and the lower side of the outer side of the inner pipe (1) through threads, nuts (3) are fixedly connected to the opposite ends of the fastening rings (2), a buffer pipe (4) is fixedly sleeved in the middle of the outer side of the inner pipe (1), an outer pipe (5) is fixedly sleeved on the outer side of the buffer pipe (4), and a rotating ring (6) is sleeved on the outer side of the outer pipe (5) through a bearing;

the utility model discloses a pipe fitting, including inner tube (1), rectangle mouth (8) are opened to the downside on the lateral wall of inner tube (1), rectangle mouth (8) are connected with stripper plate (9) through the connecting axle, connection round hole (10) have all been opened in the outside of stripper plate (9) and the opposite end middle part of connecting axle, the internal connection of round hole (10) has spring (11), the outside fixed connection of spring (11) is at the inside wall of outer tube (5).

2. The oil well tubing centralizer of claim 1, wherein the outer side of the extrusion plate (9) is inclined, the inner side of the extrusion plate (9) is arc-shaped, and the center of the arc is coincident with the center point of the inner tube (1).

3. An oil well tubing centralizer according to claim 2, wherein the rectangular openings (8) are eight, and the rectangular openings (8) are arranged on the upper and lower sides of the inner tube (1) in an annular array.

4. An oil well tubing centralizer according to claim 1, characterized in that the distance between the inner tube (1) and the outer tube (5) is equal to the thickness of the side wall of the fastening ring (2).

5. An oil well tubing centralizer according to claim 1, wherein the outer side of the rotating ring (6) is provided with a plurality of triangular grooves (7) in an annular array.

6. An oil well tubing centralizer according to claim 1, characterized in that the opposite ends of the tightening ring (2) are internally bevelled.

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