CN217001773U

CN217001773U - Multilayer fracturing packer

Info

Publication number: CN217001773U
Application number: CN202220713458.1U
Authority: CN
Inventors: 马中国; 吴高祥; 李磊
Original assignee: Xi'an Petroleum Dajiarun Industrial Co ltd
Current assignee: Xi'an Petroleum Dajiarun Industrial Co ltd
Priority date: 2022-03-29
Filing date: 2022-03-29
Publication date: 2022-07-19
Anticipated expiration: 2032-03-29

Abstract

The utility model discloses a multilayer fracturing packer in the technical field of packers, which comprises a well wall, wherein a packer main body is arranged inside the well wall, a slip is arranged on the packer main body, and a protection plate is arranged on the side surface of the slip; the movable groove has been seted up to the side of slips, logical groove has been seted up to the inner wall of movable groove, the inside slidable mounting of movable groove has the limiting plate, fixed mounting has the spring between limiting plate and the movable groove, the inside slidable mounting of movable groove has the slide, the one end fixed mounting of slide is on the guard plate, slide and logical groove phase-match, the side of limiting plate and the equal fixed mounting of another side of slide have the pinion rack, pinion rack phase-match on the two, the guide way has all been seted up to the both sides face of packer main part, the position fixed mounting that the side of guard plate is close to the lower extreme has the deflector, can be at the operation in-process, reduce the wall of a well wearing and tearing that the contact of slips and the wall of a well caused, improve the sealed effect of packer.

Description

Multilayer fracturing packer

Technical Field

The utility model relates to the technical field of packers, in particular to a multi-layer fracturing packer.

Background

Along with the development of unconventional oil and gas resources, the use of multilayer staged fracturing is increasingly wide, and the method is mainly used for horizontal well operation. In the segmentation construction, one of the leading instrument is the packer, the packer that adopts on the market at present mostly divide into one section rubber sleeve or multistage rubber sleeve, wherein each section rubber sleeve interval of multistage rubber sleeve generally evenly sets up, and mainly be located the packer middle section, although can reach sealed effect, but the rubber sleeve except playing sealed effect, still need play the effect of auxiliary stay, and concentrate on its supporting role can receive the influence on one section, in order to solve this problem, often need set up the slips section alone on the packer.

The existing Chinese patent (publication number: CN207686666U) discloses a sliding sleeve type packer with guide and segmented multilayer fracturing for a horizontal well, which belongs to the technical field of hydraulic fracturing and comprises an upper joint, a rubber cylinder section, an outer cylinder, a central tube, a ball seat and a guider, wherein the outer cylinder and the rubber cylinder section are provided with a plurality of sliding sleeve type packers which are arranged at intervals from top to bottom, the upper joint is connected to the upper end of the outer cylinder at the uppermost part, the central tube is arranged at the inner side of the outer cylinder, the ball seat is arranged in the middle of the central tube, a cone is connected below the ball seat, the lower end of the rubber cylinder is provided with a limiting sleeve, and the lower section of the sliding sleeve type packer is provided with an adapter and a connecting head; and a shearing pin is connected between the outer barrel and the central pipe from the upper end of the packer to the outer barrel. According to the utility model, by optimizing the position of the rubber cylinder of the packer, setting can be completed during staged fracturing construction, and downhole operation can be better completed.

Current multilayer fracturing packer, at the operation in-process, the wall of a well wearing and tearing are caused easily in the slips and the contact of the wall of a well, to putting into again and taking out the packer in later stage, the wall of a well of wearing and tearing produces the friction to the rubber easily, is unfavorable for the sealed effect of packer, reduces the device's performance.

Based on the technical scheme, the utility model designs a multi-layer fracturing packer to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a multilayer fracturing packer to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a multilayer fracturing packer comprises a well wall, wherein a packer main body is arranged inside the well wall, a slip is arranged on the packer main body, and a protection plate is arranged on the side surface of the slip;

the activity groove has been seted up to the side of slips, and the inner wall in activity groove has been seted up and has been led to the groove, and the inside slidable mounting in activity groove has the limiting plate, and fixed mounting has the spring between limiting plate and the activity groove, and the inside slidable mounting in activity groove has the slide, and the one end fixed mounting of slide is on the guard plate, slide and lead to the groove phase-match.

Preferably, the side of limiting plate and the another side of slide all fixed mounting have the pinion rack, pinion rack phase-match on the two.

Preferably, the guide grooves are formed in two side faces of the packer main body, and guide plates are fixedly installed on the side faces of the protection plates close to the lower end of the protection plates.

Preferably, the guide groove is L-shaped and matches with the guide plate.

Preferably, an upper joint is fixedly mounted on the upper end face of the packer main body, and a lower joint is fixedly mounted on the lower end face of the packer main body.

Preferably, the upper part of the upper joint is provided with a sand blasting pipe section, the upper part of the sand blasting pipe section is connected to a lower joint of another set of packer main body to form a section of fracturing section, and the upper end of the packer main body at the uppermost end of the plurality of fracturing sections is provided with a hydraulic anchor.

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

1. place the inside at the wall of a well with the packer main part, at the in-process of packer main part work, slips can longitudinal movement, press the action bars on the limiting plate, drive limiting plate extrusion spring, overlap the guard plate on the slips, and run through the inside that logical groove inserted the movable slot with the slide, move along the movable slot longitudinal movement, then loosen the action bars, spring release pressure, make limiting plate and slide contact, the cooperation through the pinion rack, prescribe the position of slide, thereby be in the same place guard plate and slips are installed, when slips longitudinal movement, the deflector that drives on the guard plate is along guide slot longitudinal movement, increase the stability of its removal, the lateral surface of guard plate is the smooth surface simultaneously, prevent that the in-process that the slips removed from leading to certain damage to the wall of a well, improve the device's performance.

Of course, it is not necessary for any product in which the utility model is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

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

FIG. 2 is an associated view of the packer body and slips of the present invention;

FIG. 3 is an enlarged schematic view at A of FIG. 2 of the present invention;

FIG. 4 is an associated view of the slips and slide plate of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a pipe section; 2. a packer body; 3. slips; 4. a guide groove; 5. a lower joint; 6. an upper joint; 7. a protection plate; 8. a guide plate; 9. a slide plate; 10. a through groove; 11. a movable groove; 12. a limiting plate; 13. a spring; 14. a toothed plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1 to 4, the present invention provides a multilayer fracturing packer technical scheme: a multilayer fracturing packer comprises a well wall 1, wherein a packer main body 2 is arranged inside the well wall 1, a slip 3 is arranged on the packer main body 2, and a protection plate 7 is arranged on the side surface of the slip 3;

activity groove 11 has been seted up to the side of slips 3, and logical groove 10 has been seted up to the inner wall of activity groove 11, and the inside slidable mounting of activity groove 11 has limiting plate 12, and fixed mounting has spring 13 between limiting plate 12 and the activity groove 11, and the inside slidable mounting of activity groove 11 has slide 9, and slide 9's one end fixed mounting is on guard plate 7, slide 9 and logical groove 10 phase-match.

Preferably, toothed plates 14 are fixedly mounted on the side surfaces of the limit plate 12 and the other side surface of the sliding plate 9, and the toothed plates 14 on the limit plate and the sliding plate are matched.

Preferably, guide grooves 4 have all been seted up to the both sides face of packer main part 2, and the side of guard plate 7 is close to the fixed position of lower extreme and is installed deflector 8, and the side of guard plate 7 is the smooth surface.

Preferably, the guide slot 4 is L-shaped and the guide slot 4 matches the guide plate 8.

Preferably, an upper joint 6 is fixedly installed on the upper end face of the packer main body 2, and a lower joint 5 is fixedly installed on the lower end face of the packer main body 2.

Preferably, the upper part of the upper joint 6 is provided with a sand blasting pipe section, the upper part of the sand blasting pipe section is connected to the lower joint 5 of the other set of packer main body 2 to form a section of fracturing section, and the upper end of the packer main body 2 at the uppermost end of the plurality of fracturing sections is provided with a hydraulic anchor.

One specific application of this embodiment is: firstly, a packer main body 2 is placed inside a well wall 1, in the working process of the packer main body 2, a slip 3 can move longitudinally, an operating rod on a limiting plate 12 is pressed to drive the limiting plate 12 to extrude a spring 13, a protecting plate 7 is sleeved on the slip 3, a sliding plate 9 penetrates through a through groove 10 to be inserted into a movable groove 11 and moves longitudinally along the movable groove 11, then the operating rod is loosened, the spring 13 releases pressure to enable the limiting plate 12 to be in contact with the sliding plate 9, the position of the sliding plate 9 is limited through the cooperation of a toothed plate 14, therefore, the protecting plate 7 and the slip 3 are installed together, when the slip 3 moves longitudinally, a guide plate 8 on the protecting plate 7 is driven to move longitudinally along a guide groove 4, the moving stability of the slip is improved, meanwhile, the outer side surface of the protecting plate 7 is smooth, and the well wall 1 is prevented from being damaged in the moving process of the slip 3, the service performance of the device is improved.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand the utility model for and utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A multilayer fracturing packer, includes the wall of a well (1), its characterized in that: a packer main body (2) is arranged inside the well wall (1), slips (3) are arranged on the packer main body (2), and a protection plate (7) is arranged on the side surface of each slip (3);

activity groove (11) have been seted up to the side of slips (3), logical groove (10) have been seted up to the inner wall in activity groove (11), the inside slidable mounting in activity groove (11) has limiting plate (12), fixed mounting has spring (13) between limiting plate (12) and activity groove (11), the inside slidable mounting in activity groove (11) has slide (9), the one end fixed mounting of slide (9) is on guard plate (7), slide (9) and logical groove (10) phase-match.

2. The multi-layer fracturing packer of claim 1, wherein: toothed plates (14) are fixedly mounted on the side surfaces of the limiting plates (12) and the other side surface of the sliding plate (9), and the toothed plates (14) on the limiting plates and the sliding plate are matched.

3. The multi-layer frac packer of claim 1, wherein: guide way (4) have all been seted up to the both sides face of packer main part (2), the side of guard plate (7) is close to the fixed position of lower extreme and installs deflector (8).

4. The multi-layer frac packer of claim 3, wherein: the guide groove (4) is L-shaped, and the guide groove (4) is matched with the guide plate (8).

5. The multi-layer frac packer of claim 1, wherein: the packer is characterized in that an upper joint (6) is fixedly mounted on the upper end face of the packer main body (2), and a lower joint (5) is fixedly mounted on the lower end face of the packer main body (2).

6. The multi-layer fracturing packer of claim 5, wherein: top connection (6) upper portion is equipped with the sandblast pipeline section, and sandblast pipeline section top is connected to lower clutch (5) of another set of packer main part (2), constitutes one section fracturing section, and the upper end of packer main part (2) of the top of a plurality of fracturing sections is equipped with the hydraulic anchor.