CN106593316B - A kind of anti-sticking molded cannula burnisher - Google Patents
A kind of anti-sticking molded cannula burnisher Download PDFInfo
- Publication number
- CN106593316B CN106593316B CN201611244888.9A CN201611244888A CN106593316B CN 106593316 B CN106593316 B CN 106593316B CN 201611244888 A CN201611244888 A CN 201611244888A CN 106593316 B CN106593316 B CN 106593316B
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- CN
- China
- Prior art keywords
- mandrel
- central tube
- knife
- molded cannula
- outer cylinder
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/006—Accessories for drilling pipes, e.g. cleaners
Abstract
The invention discloses a kind of anti-sticking molded cannula burnishers, the tool includes upper, lower end is separately connected the central tube of central tube top connection and central tube lower contact, the outer, coaxial of central tube, which is felt at ease, fills the mandrel that the upper end is threadedly coupled box cupling, mandrel it is upper, lower part is installed by the outer cylinder fixed with pin shaft respectively, the middle part of mandrel is installed by China and foreign countries' wound packages ligand, China and foreign countries' wound packages ligand it is upper, it is installed respectively by scraping block baffle lower end, cutter block and cutter block spring constitute upper, lower two groups of knife cages, the opposite side of two groups of knife cages installs the cone concentric with central tube and the baffle ring for connecting aforementioned outer cylinder respectively, the spring of connection piston is installed in the cavity between cone and baffle ring radial direction, piston is installed in the cavity between the mandrel and outer cylinder by clearance fit.The invention has the advantages that structure is simple, convenient for operation, the contraction outer diameter of cutter block in knife cage can be made to be less than casing inner diameter by the restoring force of hydraulic-driven pressure and spring, thus by the risk of card when avoiding cleaning；It can be plowed with completion tool string one and bore tripping in completion cleaning operation, to save a large amount of activity durations.
Description
Technical field
The present invention relates to a kind of oilfield wellbore tools, more particularly, it relates to a kind of avoidable card risk of meeting
Anti-sticking molded cannula burnisher.
Background technique
After new well carries out perforating job, for the smooth seat for guaranteeing the straightway tripping in of completion tool and packing element
Envelope, independent tripping in one plows the burnishers such as pipeline scraper, strong magnetic die to the cement on internal surface of sleeve pipe usually before completion practice
The sundries such as block, cement sheath, iron filings, shell skin, paraffin, greasy dirt are purged.
Currently, common burnisher is pipeline scraper.In a free state, the outer diameter at pipeline scraper knife cage is greater than casing
Internal diameter then by knife cage outer diameter and the interference fit compressed spring of casing inner diameter between the two, realizes pipe cleaning in the operating condition
Device is to the scraping of internal surface of sleeve pipe, to reach cleaning effect.
But when clearing up internal surface of sleeve pipe using above-mentioned pipeline scraper, if encounter casing deform etc. complex situations when, just
It is easy to happen the risk that pipeline scraper meets card.
Summary of the invention
The object of the invention is to solve it is above-mentioned the problems of in the prior art, and provide a kind of anti-card-type thus
Casing clean tool.
The technical scheme is that:
A kind of anti-sticking molded cannula burnisher, including upper and lower end are separately connected central tube top connection and central tube lower contact
Central tube, the outer, coaxial of the central tube feel at ease fills the upper end be threadedly coupled box cupling mandrel, the upper and lower part of the mandrel
The outer cylinder fixed with pin shaft be installed respectively, China and foreign countries' wound packages ligand is installed at the middle part of the mandrel, China and foreign countries' wound packages ligand it is upper,
Lower end is installed by the upper and lower two groups of knife cages being made of scraping block baffle, cutter block and cutter block spring, the opposite side of knife cage described in two groups respectively
The cone concentric with central tube is installed respectively and connect the baffle ring of the outer cylinder, knife cage described in two is respectively by positioned at it
Ipsilateral baffle ring and China and foreign countries' wound packages ligand limited, be equipped in the cavity between the cone and baffle ring radial direction connection live
The spring of plug, the piston are installed on by clearance fit the cavity between the mandrel and outer cylinder Nei and with the end face of piston
Positioning.
The mandrel is the two-part structure being connected by mandrel box cupling.
The upper and lower part of the central tube is respectively arranged with the upper axial bridge that autonomous channel is constituted with the mandrel
Formula channel and lower part axial direction passageway bridge, and 4 road sealing grooves are equipped on the inside of the upper end of the central tube.
Piston described in two is symmetrically installed and can realize unlimited iterative motion, and the outer surface of the piston is uniform
It is distributed 5 groups of J-type slots.
The outer end of the cone is provided with step, and the outside of the other end is circumferentially uniformly distributed 47 ° of guiding inclines.
The top of the mandrel is symmetrically provided with an oblique pressure transmission hole.
20 ° of chamferings are arranged in the outer end of the outer cylinder, and the inner end of the outer cylinder is provided with axial fixed with baffle ring realization
The step of position.
The outer end of the baffle ring is provided with the step that axially position is realized with the outer cylinder.
Knife cage described in two groups is in 45° angle cross arrangement in mandrel, and the cutter block in the knife cage is 4, described in 4
Cutter block circumference uniform distribution is in knife cage.
The coupling part of the knife cage and cone is provided with and 7 ° of guiding inclines mutually agree in the cone guiding incline.
The middle outer sleeve assembly is the split-type structure being bolted.
The beneficial effects of the present invention are:
(1) structure is simple, convenient for operation, securely and reliably.
(2) the flexible of cutter block in knife cage can be realized by the restoring force of hydraulic-driven pressure and spring, and cutter block can be made to receive
Contracting outer diameter is less than casing inner diameter, thus by the risk of card when avoiding cleaning.
(3) it can be plowed with completion tool string one and bore tripping in completion cleaning operation, to save a large amount of activity durations.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is axial passageway bridge structural schematic diagram in the present invention；
Fig. 3 is piston structure schematic diagram in the present invention；
Fig. 4 is the schematic diagram of guiding incline in the present invention；
Fig. 5 is the schematic diagram of oblique pressure transmission hole in the present invention；
Fig. 6 is the end face of middle outer sleeve assembly in the present invention；
Fig. 7 is the side view of Fig. 6.
Appended drawing reference: 1, box cupling；2, mandrel；3, outer cylinder；4, central tube top connection；5, piston；6, pin shaft；7, cone；8,
Spring；9, baffle ring；10, central tube；11, cutter block baffle；12, cutter block；13, knife cage；14, China and foreign countries' wound packages ligand；15, mandrel connects
Hoop；16, cutter block spring；17, central tube lower contact；18, seal groove；19, oblique pressure transmission hole；20, upper axial passageway bridge；
21,7 ° of guiding inclines；22, lower part axial direction passageway bridge.
Specific embodiment
To make the present invention be easier to be understood, below in conjunction with drawings and examples to technical solution of the present invention and its
Technical effect is explained in detail.
Referring to Fig.1, a kind of anti-sticking molded cannula burnisher, including central tube 10, the upper and lower end difference of the central tube 10
It is threadedly coupled installation center pipe top connection 4 and central tube lower contact 17, the outer, coaxial of the central tube 10, which is felt at ease, fills mandrel 2,
The threaded upper ends connection coupling 1 of the mandrel 2, the upper and lower part of the mandrel 2 are threadedly coupled respectively and with 6 fixed outer cylinders of pin shaft
3, China and foreign countries' wound packages ligand 14 is installed at the middle part of the mandrel 2, and the upper and lower end of China and foreign countries' wound packages ligand 14 is installed respectively by scraping block
Two knife cages 13 that baffle 11, cutter block 12 and cutter block spring 16 are constituted, the opposite side of two knife cages 13 are installed respectively in
The concentric cone 7 of heart pipe 10 and the baffle ring 9 for connecting the outer cylinder 3, knife cage 13 described in two are same by being located at them respectively
The baffle ring 9 and China and foreign countries' wound packages ligand 14 of side are limited, and spring 8 is installed in the cavity between 9 radial direction of the cone 7 and baffle ring,
The spring 8 connects piston 5, piston 5 described in two respectively by clearance fit be installed on the mandrel 2 and outer cylinder 3 it
Between cavity in and positioned with the end face of piston 5.
The mandrel 2 is the two-part structure being connected by mandrel box cupling 15.
The top of the central tube 10 is provided with upper axial passageway bridge 20 (referring to fig. 2), under the central tube 10
Portion is provided with lower part axial direction passageway bridge 22 (referring to fig. 2), and the upper axial passageway bridge 20 and lower part axial direction bridge-type are logical
Road 22 and the mandrel 2 collectively form autonomous channel, are provided with 4 road sealing grooves on the inside of the upper end of the central tube 10
18。
Piston 5 described in two is symmetrically installed and can realize unlimited iterative motion, and the outer surface of the piston is equal
5 groups of J-type slots of even distribution (referring to Fig. 3).
The outer end of the cone 7 is provided with step, and the outside of the other end is circumferentially uniformly distributed 47 ° of guiding inclines 21 (ginseng
See Fig. 4).
The top of the mandrel 2 is symmetrically provided with 2 oblique pressure transmission holes 19 (referring to Fig. 5).
20 ° of chamferings are arranged in the outer end of the outer cylinder 3, and the inner end of the outer cylinder 3, which is provided with, realizes axial direction with the baffle ring 9
The step of positioning.
The outer end of the baffle ring 9 is provided with the step that axially position is realized with the outer cylinder.
Knife cage 13 described in two is in 45° angle cross arrangement in mandrel 2, and the cutter block 12 in the knife cage 13 is 4, and 4
A 12 even circumferential of cutter block is distributed in knife cage 13.
The coupling part of the knife cage 13 and cone 7, which is provided with, agrees with 7 ° of 21 phases of guiding incline in the cone 7
Guiding incline, with by the moving up of the cone 7, transfer and realize that the knife cage 13 stretching on China and foreign countries' wound packages ligand 14, contract fortune
It is dynamic.
The middle outer sleeve assembly 14 is the split-type structure (referring to Fig. 6, Fig. 7) being bolted, such
Set-up mode can provide conveniently for the whole assembly of tool.
The piston 5, which is hydraulically operated, pushes the spring of cone 7 and 8 mobile to knife cage 13, to make to match with the cone 7
The cutter block 12 of conjunction is opened, and after hydraulic-driven removal, is then pushed in the cone reverse movement with the restoring force of the spring 8
It moves, the cutter block 12 in the knife cage 13 is made to be contracted to original position.
Anti-sticking molded cannula burnisher of the invention can be connected by standard thread with completion tool, specified to its tripping in
Behind position, the pressure suppressed in drilling rod can enter the pressure transmission channel of mandrel 2 by the pressure transmission hole on the central tube 10, work as pressure
After power reaches setting value, the piston 5 is mobile with movable cone 7 and the compression spring 8 makes in the knife cage 13 simultaneously
Cutter block 12 is opened, and after release, the cone 7 is moved backward by the restoring force of the spring 8, meanwhile, the piston 5 is in pin
Under the action of axis 5 in commutation to specified channel, the cutter block 12 keeps open configuration, carries out cleaning operation.
If burnisher of the invention meets card in cleaning operation, the method suppressed into tubing string can be taken, makes to press
Power enters the pressure transmission channel of mandrel 2 by the pressure transmission hole of central tube 10, so that the piston 5 be made to drive under pressure
The mobile simultaneously compressed spring 8 of the cone 7, after release, it is described that compressed spring 8, which is replied band movable cone 7 and moved backward,
Piston 5 commutates under the action of pin shaft to another slot, causes cutter block 12 to shrink, makes the maximum outside diameter of burnisher of the invention
Less than casing inner diameter, thus release by card-like state and from tubing string out.
Schematic description of the technical scheme of the invention is schematically described in conjunction with the accompanying drawings and embodiments above, but the present invention not office
It is limited to above-mentioned specific embodiment.Those skilled in the art are of the invention it should be appreciated that in practical applications
Planform or set-up mode are likely to occur certain changes, and other staff may also be made under its enlightenment it is similar to its
Design.In particular, it should be pointed out that as long as it does not depart from the design purpose of the present invention, all obvious changes include
Within protection scope of the present invention.
Claims (10)
1. a kind of anti-sticking molded cannula burnisher, central tube top connection and central tube lower contact are separately connected including upper and lower end
Central tube, it is characterised in that: the outer, coaxial of the central tube, which is felt at ease, fills the mandrel that the upper end is threadedly coupled box cupling, the mandrel
Upper and lower part the outer cylinder fixed with pin shaft is installed respectively, China and foreign countries' wound packages ligand, China and foreign countries' wound packages are installed in the middle part of the mandrel
The upper and lower end of ligand installs the upper and lower two groups of knife cages being made of scraping block baffle, cutter block and cutter block spring, knife described in two groups respectively
The opposite side of cage installs the cone concentric with central tube and the baffle ring for connecting the outer cylinder respectively, the difference of knife cage described in two
It is limited by being located at their ipsilateral baffle rings and China and foreign countries' wound packages ligand, peace in the cavity between the cone and baffle ring radial direction
Equipped with connection piston spring, the piston be installed on the cavity between the mandrel and outer cylinder Nei by clearance fit and with
The end face of piston positions.
2. anti-sticking molded cannula burnisher according to claim 1, it is characterised in that: the mandrel is to be connect by mandrel
The two-part structure being connected is bound round, the middle outer sleeve assembly is the split-type structure being bolted.
3. anti-sticking molded cannula burnisher according to claim 1, it is characterised in that: the upper and lower part of the central tube
It is respectively arranged with the upper axial passageway bridge and lower part axial direction passageway bridge that autonomous channel is constituted with the mandrel, and in institute
It states and is equipped with 4 road sealing grooves on the inside of the upper end of central tube.
4. anti-sticking molded cannula burnisher according to claim 1, it is characterised in that: piston described in two is symmetrically installed
And the outer surface of the piston is uniformly distributed 5 groups of J-type slots.
5. anti-sticking molded cannula burnisher according to claim 1, it is characterised in that: the outer end of the cone is provided with platform
Rank, the outside of the other end are circumferentially uniformly distributed 47 ° of guiding inclines.
6. anti-sticking molded cannula burnisher according to claim 1, it is characterised in that: the top of the mandrel is symmetrically provided with
A oblique pressure transmission hole.
7. anti-sticking molded cannula burnisher according to claim 1, it is characterised in that: the outer end of the outer cylinder is arranged 20 °
Chamfering, the inner end of the outer cylinder are provided with the step that axially position is realized with the baffle ring.
8. anti-sticking molded cannula burnisher according to claim 1, it is characterised in that: the outer end of the baffle ring be provided with
The outer cylinder realizes the step of axially position.
9. anti-sticking molded cannula burnisher according to claim 1, it is characterised in that: knife cage described in two groups is in mandrel
In 45° angle cross arrangement, the cutter block in the knife cage is cutter block circumference uniform distribution described in 4,4 in knife cage.
10. anti-sticking molded cannula burnisher according to claim 1, it is characterised in that: the company of the knife cage and cone
Socket part sets up the guiding incline being equipped with 7 ° of guiding inclines mutually agree in the cone separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611244888.9A CN106593316B (en) | 2016-12-29 | 2016-12-29 | A kind of anti-sticking molded cannula burnisher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611244888.9A CN106593316B (en) | 2016-12-29 | 2016-12-29 | A kind of anti-sticking molded cannula burnisher |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106593316A CN106593316A (en) | 2017-04-26 |
| CN106593316B true CN106593316B (en) | 2019-01-11 |
Family
ID=58605032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611244888.9A Active CN106593316B (en) | 2016-12-29 | 2016-12-29 | A kind of anti-sticking molded cannula burnisher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106593316B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112973890B (en) * | 2021-04-02 | 2022-09-13 | 山西氢电科技有限公司 | Pipeline cracking device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4781250A (en) * | 1987-12-14 | 1988-11-01 | Otis Engineering Corp. | Pressure actuated cleaning tool |
| WO2007003894A2 (en) * | 2005-07-02 | 2007-01-11 | Specialised Petroleum Services Group Limited | Wellbore cleaning method and apparatus |
| GB2504699A (en) * | 2012-08-06 | 2014-02-12 | M I Drilling Fluids Uk Ltd | Switchable fluid driving tool |
| CN204899861U (en) * | 2015-07-30 | 2015-12-23 | 中国海洋石油总公司 | Differential drain cock of water conservancy |
| CN105604523A (en) * | 2015-12-25 | 2016-05-25 | 贵州高峰石油机械股份有限公司 | Method for improving pipe scraper and pipe scraper |
-
2016
- 2016-12-29 CN CN201611244888.9A patent/CN106593316B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4781250A (en) * | 1987-12-14 | 1988-11-01 | Otis Engineering Corp. | Pressure actuated cleaning tool |
| WO2007003894A2 (en) * | 2005-07-02 | 2007-01-11 | Specialised Petroleum Services Group Limited | Wellbore cleaning method and apparatus |
| GB2504699A (en) * | 2012-08-06 | 2014-02-12 | M I Drilling Fluids Uk Ltd | Switchable fluid driving tool |
| CN204899861U (en) * | 2015-07-30 | 2015-12-23 | 中国海洋石油总公司 | Differential drain cock of water conservancy |
| CN105604523A (en) * | 2015-12-25 | 2016-05-25 | 贵州高峰石油机械股份有限公司 | Method for improving pipe scraper and pipe scraper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106593316A (en) | 2017-04-26 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Applicant after: China Offshore Oil Group Co., Ltd. Applicant after: CNOOC Energy Development Co., Ltd. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Applicant before: China National Offshore Oil Corporation Applicant before: CNOOC Energy Development Co., Ltd. |
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| GR01 | Patent grant |