CN210660023U - Compression packer - Google Patents

Abstract

The utility model discloses a compression packer, which comprises a lower connector, a pressing sleeve, a main shaft, a middle connector, a rubber cylinder, a pressing ring and an upper connector, wherein the outer sides of the two ends of the main shaft are respectively connected with the upper connector and the lower connector, the outer side of the middle part of the main shaft is connected with the middle connector, the rubber cylinder is equidistantly connected between the upper connector and the middle connector at the outer side of the main shaft, and the packing element has threely, the main shaft outside is located and is connected with the clamping ring between two adjacent packing elements, the main shaft is kept away from connector under the one end fixedly connected with of connector, the outside of connecting head one end in the head rest is connected with the pressure cover down, well connector, the pressure cover, form down between connector and the main shaft, the third seal chamber, first seal chamber and second seal chamber, this packer integral sealing is effectual, be convenient for long-term operation, can effectually avoid the phenomenon that liquid leaks outward, the condition that traditional single packing element radial expansion volume made liquid leak outward and lead to the seat to seal the failure greatly has been avoided.

Description

Compression packer

Technical Field

The utility model relates to a packer technical field specifically is a compression packer.

Background

In the development process of an oil field, particularly in a horizontal well, multiple setting and multiple unsealing are generally realized by using one string, and a packer is the most common tool for realizing setting and unsealing, and generally, the packer can be divided into the following parts according to the structure: self-sealing, compression, wedging, expansion, combination and the like, and can be divided into the following steps according to the setting mode: a lifting and defence pipe column type, a self-sealing type, a thermal expansion type and the like.

Present compression packer structure is comparatively fixed the slabby, and sealed condition is comparatively single, and it is poor to lead to using sealed effect, and present compression makes the packer be provided with single packing element usually, and the packing element is big because of atmospheric pressure is pressurized and is leaded to radial expansion degree in the use, makes inside extrusion part to its support strength variation, makes the leakage of liquid easily, fragile for this reason, we propose a compression packer.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a compression packer 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 compression packer, includes connector, pressure cover, main shaft, well connector, packing element, clamping ring and last connector down, the outside at main shaft both ends is connected with connector and lower connector respectively, the outside at main shaft middle part is connected with well connector, the main shaft outside is located the equidistance between connector and the well connector and is connected with the packing element, and the packing element has threely, the main shaft outside is located and is connected with the clamping ring between two adjacent packing elements, the main shaft is kept away from the one end fixedly connected with of connector down and is connected with the connector, the outside of connecting head rest nearly well connector one end is connected with the pressure cover down, well connector, pressure cover, down formed between connector and the main shaft, third seal chamber, first seal chamber and second seal chamber.

Preferably, the one end that the connector was kept away from down to well connector is provided with first bulge loop, two fourth sealing washers are installed in the one end embedding that first bulge loop is close to the main shaft, and fourth sealing washer and main shaft laminating are connected, the main shaft outside is located the inside second bulge loop that is provided with of well connector, and the inside one side embedding of second bulge loop position in connector installs two third sealing washers, the third sealing washer is connected with well connector inner wall laminating, the one end that the pressure cover is close to well connector is provided with the third bulge loop, and the embedded second sealing washer of installing of third bulge loop, the second sealing washer is connected with the lateral wall laminating of main shaft, the connector is located the inside one end embedding of pressure cover down and installs two first sealing washers, and first sealing washer is connected with the laminating of pressure cover inner wall.

Preferably, the end part of the pressing sleeve is provided with a limiting groove, and one end of the middle connector, which is far away from the rubber sleeve, is clamped in the limiting groove at the end part of the pressing sleeve.

Preferably, a pressure relief hole is formed between the pressing sleeve and the lower connector.

Preferably, the inner wall of the upper connector is provided with an internal thread, the outer side of the main shaft is provided with an external thread matched with the internal thread, and the upper connector is connected with the main shaft through the thread.

Preferably, the middle connector and the main shaft, the pressing sleeve and the lower connector and the main shaft are fixedly connected through fixing screws.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a fixed stay effect has been played to the main shaft, through having set up the connector, well connector has played better connection effect down, through setting up first bulge loop on well connector, and two fourth sealing washers of embedding installation on first bulge loop, carry out double-deck sealing through two fourth sealing washers between well connector and the main shaft this moment, better sealed effect has been reached, through having set up the second bulge loop on the main shaft, and set up the third sealing washer on the second bulge loop, make and carry out double-deck sealing through two third sealing washers between main shaft and the well connector inside, better sealed effect has been played, make simultaneously through second sealing washer and first sealing washer press and play better sealing effect between cover and the lower connector, whole sealed effectual, be convenient for long-term operation.

2. The utility model discloses a to go up and set up to threaded connection between connector and the main shaft, be convenient for to the dismouting of last connector, it is comparatively convenient to use, set up to three packing element through single packing element split with traditional, the extrusion part extrudees three packing element when using, make three packing element realize radial expansion, can play better fixed stay effect to the packing element through the clamping ring, the effectual phenomenon of leaking outside liquid of having avoided, the condition of traditional single packing element radial expansion volume makes liquid leak outside greatly and leads to the seat to seal the failure has been avoided.

Drawings

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

In the figure: 1. a lower connector; 2. pressing the sleeve; 3. a main shaft; 4. a middle connector; 5. a rubber cylinder; 6. pressing a ring; 7. a third sealed chamber; 8. a first sealed chamber; 9. a second sealed chamber; 10. a pressure relief vent; 11. a first seal ring; 12. a second seal ring; 13. a third seal ring; 14. a fourth seal ring; 15. an upper connector; 16. a first convex ring; 17. a second convex ring; 18. and a third convex ring.

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, the present invention provides a technical solution: a compression packer comprises a lower connector 1, a pressing sleeve 2, a main shaft 3, a middle connector 4, rubber cylinders 5, a pressing ring 6 and an upper connector 15, wherein the outer sides of two ends of the main shaft 3 are respectively connected with the upper connector 15 and the lower connector 1, the upper connector 15, the middle connector 4 and the lower connector 1 are arranged to play a good connecting role, the middle connector 4 is connected with the outer side of the middle part of the main shaft 3, the rubber cylinders 5 are equidistantly connected between the upper connector 15 and the middle connector 4 on the outer side of the main shaft 3, the number of the rubber cylinders 5 is three, the pressing ring 6 is connected between two adjacent rubber cylinders 5 on the outer side of the main shaft 3, the traditional single rubber cylinder 5 is split into the three rubber cylinders 5, an extrusion part extrudes the three rubber cylinders 5 during use to enable the three rubber cylinders 5 to realize radial expansion, and the rubber cylinders 5 can be well fixedly supported by the pressing ring 6, the phenomenon that liquid leaks outward is effectually avoided, and main shaft 3 keeps away from connector 1 under the one end fixedly connected with of last connector 15, and the outside that lower connector 1 is close to well connector 4 one end is connected with presses cover 2, well connector 4, press cover 2, have formed between lower connector 1 and the main shaft 3, third seal chamber 7, first seal chamber 8 and second seal chamber 9, play better sealed effect.

A first convex ring 16 is arranged at one end of the middle connector 4 far away from the lower connector 1, two fourth sealing rings 14 are embedded and installed at one end of the first convex ring 16 close to the main shaft 3, the fourth sealing rings 14 and the main shaft 3 are attached and connected, a second convex ring 17 is arranged inside the middle connector 4 outside the main shaft 3, two third sealing rings 13 are embedded and installed at one side of the second convex ring 17 inside the middle connector 4, the third sealing rings 13 are attached and connected with the inner wall of the middle connector 4, a third convex ring 18 is arranged at one end of the pressing sleeve 2 close to the middle connector 4, a second sealing ring 12 is embedded and installed in the third convex ring 18, the second sealing ring 12 is attached and connected with the outer side wall of the main shaft 3, two first sealing rings 11 are embedded and installed at one end of the lower connector 1 inside the pressing sleeve 2, the first sealing rings 11 are attached and connected with the inner wall of the pressing sleeve 2, and the first convex, The second convex ring 17 and the third convex ring 18 are respectively provided with the fourth sealing ring 14, the third sealing ring 13 and the second sealing ring 12 on the first convex ring 16, the second convex ring 17 and the third convex ring 18, so that layer-by-layer sealing is realized, the sealing effect is good, and the use is safe and reliable.

The spacing groove has been seted up to the tip of pressing cover 2, and the one end joint that packing element 5 was kept away from to well connector 4 is in the spacing groove of pressing cover 2 tip, the stability of being connected between cover 2 and the well connector 4 of being convenient for press.

A pressure relief hole 10 is formed between the pressure sleeve 2 and the lower connector 1, so that pressure relief is facilitated.

The inner wall of the upper connector 15 is provided with an internal thread, the outer side of the main shaft 3 is provided with an external thread matched with the internal thread, and the upper connector 15 is connected with the main shaft 3 through the thread, so that the upper connector 15 can be conveniently detached.

The middle connector 4 and the main shaft 3, the pressing sleeve 2 and the lower connector 1 and the main shaft 3 are fixedly connected through fixing screws, so that the connection between the middle connector 4 and the main shaft 3, between the pressing sleeve 2 and the lower connector 1 and between the lower connector 1 and the main shaft 3 is more stable.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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. The utility model provides a compression packer, includes connector (1), pressure cover (2), main shaft (3), well connector (4), packing element (5), clamping ring (6) and last connector (15) down, its characterized in that: the outer sides of the two ends of the main shaft (3) are respectively connected with an upper connector (15) and a lower connector (1), the outer side of the middle part of the main shaft (3) is connected with a middle connector (4), the outer side of the main shaft (3) is positioned between an upper connector (15) and the middle connector (4) and is connected with a rubber cylinder (5) at equal intervals, three rubber cylinders (5) are provided, a press ring (6) is connected between two adjacent rubber cylinders (5) at the outer side of the main shaft (3), one end of the main shaft (3) far away from the upper connector (15) is fixedly connected with a lower connector (1), the outer side of one end of the lower connector (1) close to the middle connector (4) is connected with a pressing sleeve (2), well connector (4), pressure cover (2), lower connector (1) and main shaft (3) between form, third sealed chamber (7), first sealed chamber (8) and second sealed chamber (9).

2. A compression packer according to claim 1, wherein: the one end that lower connector (1) was kept away from to well connector (4) is provided with first bulge loop (16), first bulge loop (16) are close to the one end embedding of main shaft (3) and install two fourth sealing washer (14), and fourth sealing washer (14) and main shaft (3) laminating are connected, main shaft (3) outside is located that connector (4) is inside to be provided with second bulge loop (17), and second bulge loop (17) are located that one side embedding of connector (4) inside is installed two third sealing washer (13), third sealing washer (13) are connected with well connector (4) inner wall laminating, the one end that pressure cover (2) are close to well connector (4) is provided with third bulge loop (18), and third bulge loop (18) are embedded to install second sealing washer (12), second sealing washer (12) are connected with the lateral wall laminating of main shaft (3), lower connector (1) is located the inside one end embedding of pressing cover (2) and installs two first sealing washer (11), and first sealing washer (11) with press cover (2) inner wall laminating to be connected.

3. A compression packer according to claim 1, wherein: the limiting groove is formed in the end portion of the pressing sleeve (2), and one end, far away from the rubber sleeve (5), of the middle connector (4) is clamped in the limiting groove in the end portion of the pressing sleeve (2).

4. A compression packer according to claim 1, wherein: a pressure relief hole (10) is formed between the pressure sleeve (2) and the lower connector (1).

5. A compression packer according to claim 1, wherein: go up connector (15) inner wall and be provided with the internal thread, the outside of main shaft (3) is provided with the external screw thread with internal thread matched with, go up connector (15) and main shaft (3) and pass through threaded connection.

6. A compression packer according to claim 1, wherein: the middle connector (4) and the main shaft (3), the pressing sleeve (2) and the lower connector (1) and the main shaft (3) are fixedly connected through fixing screws.

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