CN106382100A - Wax-scraping centralizer - Google Patents
Wax-scraping centralizer Download PDFInfo
- Publication number
- CN106382100A CN106382100A CN201611002813.XA CN201611002813A CN106382100A CN 106382100 A CN106382100 A CN 106382100A CN 201611002813 A CN201611002813 A CN 201611002813A CN 106382100 A CN106382100 A CN 106382100A
- Authority
- CN
- China
- Prior art keywords
- wax
- sleeve
- scraping
- blade
- connecting rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000007790 scraping Methods 0.000 title claims abstract description 19
- 239000012188 paraffin wax Substances 0.000 claims description 27
- 238000009826 distribution Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 5
- 238000005086 pumping Methods 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract description 3
- 230000003111 delayed effect Effects 0.000 abstract 1
- 239000001993 wax Substances 0.000 description 25
- 239000004575 stone Substances 0.000 description 7
- 239000012530 fluid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/02—Scrapers specially adapted therefor
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a wax-scraping centralizer which comprises a centralizer body (1) and a wax scraper (2), wherein the wax scraper (2) comprises a sleeve (21), a blade (22), a draining hole (23) and a connecting rod (24); the lower end of the centralizer body (1) is connected with the upper end of the wax scraper (2) through the connecting rod (24); the inner layer of the sleeve (21) is fixed on the connecting rod (24); the blade (22) is arranged on the outer layer of the sleeve (21); the draining hole (23) is formed in the sleeve (21) on the inner side of the blade (22) and is corresponding to the blade (22) in position. The wax-scraping centralizer is used for solving the problems of complex regular wax-cleaning construction, long delayed construction period and complex wax-scraping equipment in the prior art, is capable of scraping wax while pumping oil, has a centralizing function and is capable of effectively simplifying the wax-scraping equipment, increasing the wax-scraping efficiency and more effectively protecting pipeline and oil pumping rod.
Description
Technical field
The present invention relates to oil recovery aid field, particularly to a kind of wax-scraping righting device.
Background technology
At present, during oil exploitation, oil is in gathering line due to the change of the external conditions such as temperature, pressure, meeting
Have waxiness, asphalitine etc. to separate out, be attached on inner-walls of duct formed cementing, with the prolongation of production time, can progressively reduced set
The problems such as flow area of defeated pipeline, formation line clogging or discharge pressure raise, and it is easily damaged sucker rod, bring to production
Difficult.
In the construction of operation well, paraffin cutting operation is requisite, and the method removing the long-pending wax of tube wall common at present has
Mechanical paraffin removal, blowing or gas-lift well can use paraffin scraper or paraffin bit, and pumpingh well commonly uses rod scraper, regular wax removal.
But each required time of above-mentioned wax removing method is long, equipment is complicated, and construction is loaded down with trivial details, and periodic cleaning is due to cannot control
The wax deposition speed of pipeline is it is impossible to accomplish timely wax removal, and can not preferably protect sucker rod and pipeline.
Content of the invention
The present invention is to overcome the wax removing construction operation time long, and wax removing equipment is complicated, loaded down with trivial details defect of constructing, and provides a kind of extension
Wax centralizer.
For reaching above-mentioned purpose, the present invention adopts following scheme：
A kind of wax-scraping righting device, including centralizer body and paraffin scraper；Paraffin scraper also includes sleeve, blade, small opening and connecting rod；Righting
Body is connected by described connecting rod with paraffin scraper；Sleeve is fixed in connecting rod；Blade is arranged on sleeve；Small opening is arranged on knife
On sleeve inside piece.
Further, sleeve section is divided into inside and outside two-layer in concave shape structure, and its internal layer is enclosed within connecting rod, by fastening
Layer character cut in bas-relief open side makes sleeve fix with connecting rod, forms an open space, be easy to wax stone during wax removing between outer layer and internal layer
Can be dropped by this space, exclude outside well with circulation fluid, it is to avoid the wax stone scraping is piled up on paraffin scraper, increase sucker rod and pipe
The frictional force of wall, causes to sucker rod and pipeline to damage.
Further, blade is arranged on the outer layer of sleeve, and along its circumference distribution, tube wall is removed in the motion with sucker rod
On wax.
Further, small opening is arranged on the outer layer of sleeve, corresponding with each blade, can allow the wax that each blade scrapes
Block can be transferred through small opening and drops, it is to avoid accumulation on blade for the wax stone.
Preferably, blade is in the rim of a bowl shape, and tube wall circumferencial direction can be carried out with the cleaning of maximum area.
Preferably, paraffin scraper is connected to centralizer body lower end, it is to avoid the wax stone removed drops to be formed on centralizer body and piles up, and increases
Plus the frictional force of centralizer body and tube wall.
Further, the external diameter of paraffin scraper is more than the external diameter of centralizer body, enables paraffin scraper effectively to carry out wax body to tube wall clear
Remove.
The present invention has the advantages that：（1）Overall structure of the present invention is simple, facilitates implementation, low cost, the present invention's
Paraffin scraper is wholely set with centralizer, small volume, stabilized structure, while righting, tube wall can be carried out during present invention application
Hang wax operation；The present invention carries out wax removing while oil pumping, substantially prolongs the cycle of regular wax removing, shortens the duration, improves
Paraffin cutting efficiency.
（2）The present invention is provided with small opening, can miss wax stone, oil can be made again to pass through, reduce up resistance.
Brief description
Accompanying drawing described herein is used for providing the embodiment of the present invention is further understood, and constitutes of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is present configuration schematic diagram；
Fig. 2 is paraffin scraper structural representation.
Parts title corresponding to labelling in accompanying drawing：1- centralizer body, 2- paraffin scraper, 21- sleeve, 22- blade, 23- leaks
Hole, 24- connecting rod.
Specific embodiment
For making the object, technical solutions and advantages of the present invention become more apparent, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and the exemplary embodiment of the present invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1
As shown in Figures 1 and 2, a kind of wax-scraping righting device, including centralizer body 1 and paraffin scraper 2；Described paraffin scraper 2 also includes sleeve
21st, blade 22, small opening 23 and connecting rod 24；Described centralizer body 1 is connected by described connecting rod 24 with paraffin scraper 2, paraffin scraper 2
Upper end is connected with the lower end of centralizer body 1；Described sleeve 21 is fixed in connecting rod 24, and the internal layer of sleeve 21 is enclosed within connecting rod 24
On, fastened by forming from steel wire；Described blade 22 is arranged on sleeve 21, blade 22 along sleeve 21 by from lower distribution multiple；
Described small opening 23 is arranged on the sleeve 21 of blade 22 inner side, and its position is corresponding with blade 22；The external diameter of paraffin scraper 2 is slightly larger than and helps
Roman 1 external diameter.
Work process of the present invention is as follows：The present invention, in pumping operation, moves with the motion of sucker rod, centralizer body 1
Sucker rod is played with centralizing function, when moving to well head direction, blade 22 wipes the wax stone of tube wall off with motion to paraffin scraper 2,
The wax stone wiped off is dropped by small opening 23, discharges outside well with circulation fluid.
Embodiment 2
For making effective wax removing area increase further, reduce resistance, on the basis of embodiment 1, blade 22 is shaped as the rim of a bowl shape,
It hangs wax scope close to circumference, and extension wax area is bigger compared with the paraffin scraper area of other forms, and the rim of a bowl shape then can reduce downward fluid
Resistance is it is ensured that the present invention more moves ahead in the duct glibly it is ensured that efficient, the stability that work.
Above-described specific embodiment, has been carried out to the purpose of the present invention, technical scheme and beneficial effect further
Describe in detail, be should be understood that the specific embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, all any modification, equivalent substitution and improvement within the spirit and principles in the present invention, done etc., all should comprise
Within protection scope of the present invention.
Claims (7)
1. a kind of wax-scraping righting device is it is characterised in that include centralizer body（1）And paraffin scraper（2）；Described paraffin scraper（2）Also include
Sleeve（21）, blade（22）, small opening（23）And connecting rod（24）；Described centralizer body（1）With paraffin scraper（2）By described connecting rod
（24）Connect；Described sleeve（21）It is fixed on connecting rod（24）On；Described blade（22）It is arranged on sleeve（21）On；Described small opening
（23）It is arranged on blade（22）The sleeve of inner side（21）On.
2. a kind of wax-scraping righting device according to claim 1 is it is characterised in that described sleeve（21）Section is in that concave shape is tied
Structure is divided into inside and outside two-layer, and its internal layer is enclosed within connecting rod（24）On, make sleeve by fastening internal layer character cut in bas-relief open side（21）Be connected
Bar（24）Fixing.
3. a kind of wax-scraping righting device according to claim 1 and 2 is it is characterised in that described blade（22）It is arranged on sleeve
（21）Outer layer on, along its circumference distribution.
4. a kind of wax-scraping righting device according to claim 1 and 2 is it is characterised in that described small opening（23）It is arranged on sleeve
（21）Outer layer on, with each blade（22）Corresponding.
5. a kind of wax-scraping righting device according to claim 1 is it is characterised in that described blade（22）In the rim of a bowl shape.
6. a kind of wax-scraping righting device according to claim 1 is it is characterised in that described paraffin scraper（2）It is connected to centralizer body
（1）Lower end.
7. a kind of wax-scraping righting device according to claim 1 is it is characterised in that described paraffin scraper（2）External diameter be more than help
Roman（1）External diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611002813.XA CN106382100A (en) | 2016-11-15 | 2016-11-15 | Wax-scraping centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611002813.XA CN106382100A (en) | 2016-11-15 | 2016-11-15 | Wax-scraping centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106382100A true CN106382100A (en) | 2017-02-08 |
Family
ID=57958963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611002813.XA Withdrawn CN106382100A (en) | 2016-11-15 | 2016-11-15 | Wax-scraping centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106382100A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042777A (en) * | 2019-12-30 | 2020-04-21 | 中国石油集团川庆钻探工程有限公司 | Perforating method of underground casing system and underground casing system |
| CN113047781A (en) * | 2021-03-10 | 2021-06-29 | 东营市三和石油装备有限公司 | Stainless steel-coated anti-corrosion continuous sucker rod with centralizer |
-
2016
- 2016-11-15 CN CN201611002813.XA patent/CN106382100A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042777A (en) * | 2019-12-30 | 2020-04-21 | 中国石油集团川庆钻探工程有限公司 | Perforating method of underground casing system and underground casing system |
| CN113047781A (en) * | 2021-03-10 | 2021-06-29 | 东营市三和石油装备有限公司 | Stainless steel-coated anti-corrosion continuous sucker rod with centralizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170208 |
|
| WW01 | Invention patent application withdrawn after publication |