CN218439315U

CN218439315U - Mechanical drilling-free grading hoop

Info

Publication number: CN218439315U
Application number: CN202223095473.3U
Authority: CN
Inventors: 孙培全
Original assignee: Qingdao Xinyuansheng Petroleum Technology Co ltd
Current assignee: Qingdao Xinyuansheng Petroleum Technology Co ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-02-03
Anticipated expiration: 2032-11-22

Abstract

The utility model provides a mechanical drilling-free grading hoop, which comprises a grading hoop main body. This mechanical type exempts from to bore hierarchical hoop, when using, install at the reservation position through the top connection in hierarchical hoop main part, top connection and lower clutch can conveniently be changed, alloy sealing layer leakproofness is good simultaneously, pour into cement, throw in gravity behind the release well head pressure and open the stopper, with open the seat cooperation and open the stopper overcoat in gravity and suppress pressure, then break off the gliding and expose the circulation hole, carry out second grade cement injection, release and close stopper and replace mud, spill stopper limit assurance efficiency and make the inner wall clean, then close stopper and close seat pressurization in closing the stopper overcoat, close stopper overcoat gliding and close, the jump ring locks the inner tube after closing, and make the circulation hole close, close the stopper overcoat and reach the closed position, make upper sliding sleeve and glide sleeve drop and slide and smooth, and open the seat and close the seat and be dissoluble material and need not bore except, thereby accomplish supplementary operation, be convenient for change and guarantee simultaneously that the leakproofness is good and inside clear effect.

Description

Mechanical drilling-free grading hoop

Technical Field

The utility model relates to a well cementation equipment technical field especially relates to a mechanical type exempts from to bore hierarchical hoop.

Background

The well cementation equipment generally refers to a cement head, a ball valve, a rubber plug, a grading hoop, a packer and the like, and the mechanical drilling-free grading hoop is one of the well cementation equipment, can reduce the operation of drilling a grading hoop inner sleeve after grading well cementation, shortens the well construction period, effectively improves the sealing quality of a filling section, prolongs the exploitation life of an oil well, and improves the comprehensive exploitation value of the oil well, so the mechanical drilling-free grading hoop is particularly needed.

However, when the existing mechanical drill-free grading collar is used, a part of a joint is embedded, so that the replacement efficiency is reduced, meanwhile, most of the materials in the grading collar are stainless steel, so that the sealing performance is improved, the friction force of the materials is large, most of the existing closing plugs are straight edges, gaps may occur, and residues exist in the cleaned interior.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mechanical type exempts from to bore hierarchical hoop to propose in solving above-mentioned background art, exempt from to bore hierarchical hoop when using at a current mechanical type, it is embedded partly to connect the use, make and change efficiency and descend, the inside material majority of hierarchical hoop is the stainless steel simultaneously, make the leakproofness have and to promote the space, and this material frictional force is great, and present closing stopper most all is the straight flange moreover, the appearance that may have the gap, clean inside has remaining problem.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a mechanical type exempts from to bore hierarchical hoop, includes hierarchical hoop main part and complementary unit, the outside of hierarchical hoop main part is provided with the circulation hole, the inside of hierarchical hoop main part is provided with complementary unit, complementary unit includes alloy sealing layer, top connection, goes up the sliding sleeve, closes stopper overcoat, closes stopper, spill stopper limit, closes seat, lower sliding sleeve, inner tube, jump ring, gravity open stopper overcoat, open the seat, gravity open stopper and lower clutch, the internal connection of hierarchical hoop main part has the alloy sealing layer, the top of hierarchical hoop main part is connected with the top connection, the below of top connection is connected with the sliding sleeve, the below of going up the sliding sleeve is connected with closes the stopper overcoat, the inside of closing the stopper overcoat is provided with closes the stopper, the outside of closing the stopper is connected with spill stopper limit, the one end of closing the stopper is connected with closes the seat, the below of closing the stopper overcoat is connected with lower sliding sleeve, the below of lower sliding sleeve is connected with the inner tube, the outside of inner tube is connected with the jump ring, the below of inner tube is provided with gravity open the overcoat, the gravity opens the inside of overcoat, the seat is provided with the gravity and opens the stopper, the gravity open the inside of overcoat.

Preferably, the grading hoop main body and the alloy sealing layer are welded, and the grading hoop main body is tightly attached to the alloy sealing layer.

Preferably, the closing plug and the concave plug edges are welded, and four groups of concave plug edges are arranged.

Preferably, the inner cylinder is connected with the clamp spring through a clamping groove, and the size of the inner cylinder is matched with that of the clamp spring.

Preferably, the opening seat is in threaded connection with the gravity opening plug, and the width of the opening seat is larger than that of the gravity opening plug.

Preferably, be threaded connection between hierarchical hoop main part and the lower clutch, hierarchical hoop main part and lower clutch size phase-match.

Compared with the prior art, the beneficial effects of the utility model are that: the mechanical drilling-free grading collar comprises an alloy sealing layer, an upper joint, an upper sliding sleeve, a closing plug outer sleeve, a closing plug, a concave plug edge, a closing seat, a lower sliding sleeve, an inner barrel, a clamp spring, a gravity opening plug outer sleeve, an opening seat, a gravity opening plug and a lower joint.

Drawings

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

FIG. 2 is a schematic view of the overall cross-sectional structure of the present invention;

FIG. 3 is a schematic view of the inner structure of the closure sleeve of the present invention;

fig. 4 is a schematic view of the internal structure of the opening sleeve of the present invention.

The reference numbers in the figures: 1. a stepped collar body; 2. a circulation hole; 3. an auxiliary mechanism; 301. an alloy sealant layer; 302. an upper joint; 303. an upper sliding sleeve; 304. closing the plug outer sleeve; 305. closing the plug; 306. a concave plug edge; 307. closing the seat; 308. a lower sliding sleeve; 309. an inner barrel; 310. a clamp spring; 311. the plug outer sleeve is opened by gravity; 312. opening the seat; 313. gravity opens the plug; 314. and a lower joint.

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. 1-4, the present invention provides a technical solution: the utility model provides a mechanical type exempts from to bore hierarchical hoop, includes hierarchical hoop main part 1 and complementary unit 3, and the outside of hierarchical hoop main part 1 is provided with circulation hole 2, and the inside of hierarchical hoop main part 1 is provided with complementary unit 3.

Further, the auxiliary mechanism 3 comprises an alloy sealing layer 301, an upper joint 302, an upper sliding sleeve 303, a closing plug outer sleeve 304, a closing plug 305, a concave plug edge 306, a closing seat 307, a lower sliding sleeve 308, an inner cylinder 309, a snap spring 310, a gravity opening plug outer sleeve 311, an opening seat 312, a gravity opening plug 313 and a lower joint 314, the alloy sealing layer 301 is connected inside the grading hoop main body 1, the upper joint 302 is connected to the top end of the grading hoop main body 1, the upper sliding sleeve 303 is connected below the upper joint 302, the closing plug outer sleeve 304 is connected below the upper sliding sleeve 303, the closing plug outer sleeve 304 is arranged inside the closing plug outer sleeve 304, the concave plug edge 306 is connected outside the closing plug 305, the closing seat 307 is connected to one end of the closing plug outer sleeve 305, the lower sliding sleeve 308 is connected below the lower sliding sleeve 308, the inner cylinder 309 is connected below the lower sliding sleeve 308, the snap spring 310 is connected outside the inner cylinder 309, the gravity opening plug outer sleeve 311 is arranged below the inner cylinder 309, an opening seat 312 is arranged in a gravity opening plug housing 311, a gravity opening plug 313 is connected below the opening seat 312, a lower joint 314 is arranged below the gravity opening plug housing 311, and through arrangement of an alloy sealing layer 301, an upper joint 302, an upper sliding sleeve 303, a closing plug housing 304, a closing plug 305, a concave plug edge 306, a closing seat 307, a lower sliding sleeve 308, an inner cylinder 309, a snap spring 310, a gravity opening plug housing 311, an opening seat 312, a gravity opening plug 313 and a lower joint 314, when the device is used, a grading hoop main body 1 is installed at a preset position through the upper joint 302, the upper joint 302 and the lower joint 314 can be conveniently replaced in different sizes, inner diameters are consistent and effectively protect the safety of the main body, meanwhile, the alloy sealing layer 301 ensures good sealing performance and small friction force, cement is injected, wellhead pressure is released after a rubber plug is pressed, then the gravity opening plug 313 is put in, the gravity opening plug 313 and the opening seat 312 are matched in the gravity opening plug jacket 311 to be subjected to pressure building, then the gravity opening plug jacket 311 is disconnected, the gravity opening plug jacket 311 slides downwards to expose the circulation hole 2, circulation is built, then secondary cementing operation is carried out, after secondary cementing operation is finished, the closing plug 305 is released to replace mud, the design of the concave plug edge 306 ensures the replacement efficiency, the inner wall is clean, then the closing plug 305 and the closing seat 307 are pressurized in the closing plug jacket 304, then the closing plug jacket 304 slides downwards to be closed, then the inner barrel 309 is locked by the clamping spring 310 after closing, meanwhile the circulation hole is closed by the arrangement of the clamping spring 310, the closing plug jacket 304 reaches the closing position, internal accessories fall off, the upper sliding sleeve and the lower sliding sleeve 308 fall off and slide smoothly, and the opening seat 312 and the closing seat 307 are both made of soluble metal materials 303 or soluble rubber and do not need drilling to be removed, so that the auxiliary drill-free graded hoop is completed to operate, and replacement is convenient while good sealing performance and the effect of internal cleaning are ensured.

Furthermore, the grading hoop body 1 and the alloy sealing layer 301 are welded, the grading hoop body 1 is tightly attached to the alloy sealing layer 301, the alloy sealing layer 301 is arranged, the inner wall is good in sealing performance when made of alloy materials, friction is reduced, and internal accessories are smooth when falling off.

Furthermore, the closing plug 305 and the concave plug edges 306 are welded, four groups of concave plug edges 306 are arranged, the sealing performance is enhanced through the arrangement of the concave plug edges 306, the replacement efficiency is also ensured, and the inner wall is cleaned.

Furthermore, the inner cylinder 309 is connected with the snap spring 310 through a clamping groove, the size of the inner cylinder 309 is matched with that of the snap spring 310, and the snap spring 310 can lock the inner cylinder 309 through the arrangement that the size of the inner cylinder 309 is matched with that of the snap spring 310, so that the operation is stable.

Furthermore, the opening seat 312 is in threaded connection with the gravity opening plug 313, the width of the opening seat 312 is larger than that of the gravity opening plug 313, and the opening seat 312 is in threaded connection with the gravity opening plug 313, so that the connection is stable, the operation is stable, and the operation efficiency is improved.

Furthermore, be threaded connection between hierarchical hoop main part 1 and the lower clutch 314, hierarchical hoop main part 1 and lower clutch 314 size phase-match, through the setting for threaded connection between hierarchical hoop main part 1 and the lower clutch 314, make it be convenient for change to the internal diameter is unanimous, can effectively protect the doublestage hoop body to avoid damaging when guaranteeing the tripping operation, improves work efficiency and makes things convenient for operating personnel to operate.

The working principle is as follows: when the drill collar is used, the grading collar body 1 is installed at a preset position through the upper connector 302, the upper connector 302 and the lower connector 314 can be conveniently replaced by different sizes, the inner diameters are consistent, the safety of the body is effectively protected, meanwhile, the alloy sealing layer 301 ensures good sealing performance and low friction, cement is injected, wellhead pressure is released after a rubber plug is impacted, then, a gravity opening plug 313 is added, the gravity opening plug 313 and an opening seat 312 are matched in the gravity opening plug sleeve 311 to be subjected to pressure building, then, the gravity opening plug sleeve 311 is disconnected, the gravity opening plug sleeve 311 slides downwards to expose a circulation hole 2, circulation is established, then, secondary cementing operation is carried out, a second step is carried out, after secondary cementing is completed, a closing plug 305 is released to replace slurry, the slurry is replaced by concave plug edges 306, the replacement efficiency is guaranteed, the inner wall is clean, then, the plug closing plug sleeve 305 and the closing seat 307 are pressurized in the closing plug sleeve 304, then, the closing plug sleeve 304 slides downwards to be closed, then, a snap spring 310 is locked, the inner cylinder 309 is locked, meanwhile, the arrangement of the closing plug sleeve 304 is arranged to enable the circulation hole to be closed, an accessory 305 and the sliding sleeve 303 and the sliding sleeve 308 and the lower sleeve seat 308 is detached, so that the sealing sleeve can be replaced by a grading drill collar, the drill collar is conveniently, the drill collar is manufactured, the drill collar is easily, the sealing material or the drill collar is not capable of a grading drill without being used for a grading machine, and a grading drill, and a drilling machine, the sealing machine, the drill is convenient to be used for removing the drill.

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

1. The utility model provides a mechanical type exempts from to bore hierarchical hoop, includes hierarchical hoop main part (1) and complementary unit (3), its characterized in that: the outer side of the grading hoop main body (1) is provided with a circulation hole (2), the inside of the grading hoop main body (1) is provided with an auxiliary mechanism (3), the auxiliary mechanism (3) comprises an alloy sealing layer (301), an upper joint (302), an upper sliding sleeve (303), a closing plug outer sleeve (304), a closing plug (305), a concave plug edge (306), a closing seat (307), a lower sliding sleeve (308), an inner cylinder (309), a clamp spring (310), a gravity opening plug outer sleeve (311), an opening seat (312), a gravity opening plug (313) and a lower joint (314), the inside of the grading hoop main body (1) is connected with the alloy sealing layer (301), the top end of the grading hoop main body (1) is connected with the upper joint (302), the lower part of the upper joint (302) is connected with the upper sliding sleeve (303), the lower part of the upper sliding sleeve (303) is connected with the closing plug outer sleeve (304), the inside of the closing plug outer sleeve (304) is provided with the plug (305), the outer side of the closing plug (305) is connected with the concave closing plug edge (306), one end of the plug (305) is connected with the closing seat (307), the lower part (308) of the sliding sleeve (308) is connected with the lower part of the lower sliding sleeve (309), the outside of inner tube (309) is connected with jump ring (310), the below of inner tube (309) is provided with gravity and opens stopper overcoat (311), the inside that stopper overcoat (311) was opened to gravity is provided with opens seat (312), the below of opening seat (312) is connected with gravity and opens stopper (313), the below that stopper overcoat (311) was opened to gravity is provided with lower clutch (314).

2. The mechanical drill-free grading collar according to claim 1, wherein the grading collar body (1) is welded to the alloy sealant (301), and the grading collar body (1) is tightly attached to the alloy sealant (301).

3. The mechanical drill-free stage collar according to claim 1, wherein the shutoff plug (305) is welded to a female plug rim (306), and four sets of the female plug rims (306) are provided.

4. The mechanical drill-free stage collar of claim 1, wherein the inner cylinder (309) is connected to the clamp spring (310) by a snap groove, and the inner cylinder (309) is matched to the clamp spring (310) in size.

5. A mechanical drill-free stage collar according to claim 1, characterized in that the opening seat (312) is in threaded connection with a gravity opening plug (313), the opening seat (312) having a width greater than the width of the gravity opening plug (313).

6. A mechanical drill-free stage collar according to claim 1, wherein the stage collar body (1) is in threaded connection with the lower fitting (314), and the stage collar body (1) is sized to fit the lower fitting (314).