CN105625986B - A kind of controllable multi-functional wall scraper of scraper - Google Patents
A kind of controllable multi-functional wall scraper of scraper Download PDFInfo
- Publication number
- CN105625986B CN105625986B CN201610136457.4A CN201610136457A CN105625986B CN 105625986 B CN105625986 B CN 105625986B CN 201610136457 A CN201610136457 A CN 201610136457A CN 105625986 B CN105625986 B CN 105625986B
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- Prior art keywords
- scraper
- cast
- scraper base
- ball seat
- base
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Links
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000011010 flushing procedure Methods 0.000 abstract description 6
- 230000010354 integration Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000003801 milling Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007790 scraping 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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/02—Scrapers specially adapted therefor
- E21B37/04—Scrapers specially adapted therefor operated by fluid pressure, e.g. free-piston scrapers
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Earth Drilling (AREA)
Abstract
A kind of controllable multi-functional wall scraper of scraper, the lower end of its top connection is connected with the first cast scraper base, the lower end of the first cast scraper base is connected with the second cast scraper base by intermediate sleeve, the lower end of the second cast scraper base is connected with sleeve of receiving by ball joint, and the lower end of the sleeve of receiving is connected with lower contact；The first cast scraper base and the cylindrical of the second cast scraper base are above embedded with scraper, the both ends of the first cast scraper base and the second cast scraper base are symmetrically set with sliding sleeve and piston, the lower end of the ball joint is connected with the first ball seat by the first ball seat pin, and the second ball seat is connected with by the second ball seat pin.The present invention changes pressure in tubing string by pitching, controls the ejection and withdrawal of scraper, is not in not only stuck phenomenon in underground, and realizes one-trip string and can reach drifting, scrape wall, the purpose of well-flushing integration.
Description
Technical field
The present invention relates to petroleum well workover and underground work technical field, and in particular to a kind of controllable Multifunctional Curettage wall of scraper
Device.
Technical background
Wall scraper is mainly used in cement block, cement sheath, hard wax, the various salt knots that cleaning is remained on oil well casing inwall
Caused oxide etc. after nucleus deposit, perforation burrs and sleeve pipe corrosion, so that various downhole tools can be with unblocked
Tripping in.The job specification of general wall scraper determines that its scraper is bigger than instrument itself external diameter all the time, than through small, leading in sleeve pipe
Cross moving up and down for drilling tool and reach removing purpose.Conventional wall scraper is because scraper is in open configuration all the time, and instrument is in underground
If run into larger cement block or the borehole wall deformation caused by slim-hole when, will can not by or can not propose, cause
Down-hole accident.
The content of the invention
Present invention solves the technical problem that：There is provided a kind of scraper controllable multi-functional wall scraper, changed by pitching in tubing string
Pressure, the ejection and withdrawal of scraper are controlled, not only can smoothly remove the barrier of oil well casing inwall, effectively eliminate downhole safety
Hidden danger, and realize one-trip string and can reach drifting, scrape wall, the purpose of well-flushing integration, be particularly not in underground
Stuck phenomenon, cause down-hole accident.
The technical solution of the present invention：A kind of controllable multi-functional wall scraper of scraper, including center have through hole on connect
Head and lower contact；The lower end of the top connection is connected with the first cast scraper base, and the lower end of the first cast scraper base passes through
Intermediate sleeve is connected with the second cast scraper base, and the lower end of the second cast scraper base is connected with set of receiving by ball joint
Cylinder, the lower end of the sleeve of receiving is connected with lower contact.
The upper end of the lower end of the top connection, the both ends of intermediate sleeve and ball joint is respectively provided with annular groove, the ring
The first spring is respectively arranged with connected in star vertically；The first cast scraper base and the second cast scraper base it is cylindrical upper along week
To uniform three strip grooves, scraper is embedded with the strip groove, and it is radially equal between scraper bottom surface and strip groove
Embedded with second spring.
The both ends of the scraper symmetrically have first annular step and the second ring-shaped step；The first cast scraper base and
The both ends of second cast scraper base are symmetrically set with sliding sleeve and piston, and the piston is located in sliding sleeve, and piston passes through piston
Pin is connected with the first corresponding cast scraper base or the second cast scraper base, makes to form one between piston and sliding sleeve outer end
Sap cavity；The inlet opening and the first cast scraper that the sap cavity is correspondingly formed with by the first cast scraper base or the second cast scraper base
The insertion of the inner chamber of seat or the second cast scraper base；The inner internal diameter of the sliding sleeve is slightly larger than the external diameter of first annular step, described
The inner internal diameter of piston is slightly larger than the external diameter of the second ring-shaped step.
The outer end of the sliding sleeve of the first cast scraper base upper end suit is inserted into annular groove after compressing the first spring
And be connected respectively with top connection and intermediate sleeve by release pin, outside the sliding sleeve of the second cast scraper base upper end suit
It is inserted into annular groove after side pressure the first spring of contracting and is connected respectively with intermediate sleeve and ball joint by release pin, and
The inner of sliding sleeve is fitted in the first annular step at scraper both ends, is retracted to scraper compression second spring cylindrical flat with sliding sleeve
Neat state.
The lower end of the ball joint is connected with the first ball seat by the first ball seat pin, is connected by the second ball seat pin
There is the second ball seat, and the internal diameter of the first ball seat is more than the internal diameter of the second ball seat, and the first ball seat is located at the top of the second ball seat.
The first cast scraper base and the second cast scraper base it is cylindrical it is upper be evenly distributed three strip grooves,
And three strip grooves on the first cast scraper base and three strip grooves edge week on the second cast scraper base
To interlaced arrangement, six scrapers for making to be embedded in six strip grooves cooperate and circumferentially realize 360 ° of all standings.
The present invention has the advantage that and effect：
1st, the present invention changes pressure in tubing string by pitching, controls the ejection and withdrawal of scraper, not only can smoothly remove oil
The barrier of casing inwall, downhole safety hidden danger is effectively eliminated, and be not in stuck phenomenon in underground, cause underground thing
Therefore.
2nd, lower end of the present invention can connect drill bit, the footwear that rub, milling shoe, realize that one-trip string completion of going into the well is bored, rubbed, milling, scraping wall, well-flushing
Deng multi-mode operation.
3rd, lower end of the present invention can directly couple gauguste cutter, realize one-trip string go into the well can complete drifting, to scrape wall, well-flushing etc. more
Item underground work.
Brief description of the drawings
Fig. 1 is the structure sectional view of original state of the present invention,
Fig. 2 is Fig. 1 partial enlarged drawing,
Fig. 3 is Fig. 1 partial enlarged drawing；
Fig. 4 is the partial enlarged drawing that scraper of the present invention ejects state,
Fig. 5 is the state partial enlarged drawing after the second ball seat of the invention is destroyed,
Fig. 6 is the partial enlarged drawing of scraper retracted state of the present invention,
Fig. 7 is the state partial enlarged drawing after first, second ball seat of the invention is destroyed.
Embodiment
With reference to a kind of embodiment of the accompanying drawing 1-7 description present invention.
A kind of multi-functional wall scraper of recoverable liquid of scraper, including center have the top connection 1 and lower contact 21 of through hole, institute
The lower end for stating top connection 1 is connected with the first cast scraper base 2, and the lower end of the first cast scraper base 2 is connected by intermediate sleeve 9
The second cast scraper base 22 is connected to, the lower end of the second cast scraper base 22 is connected with sleeve of receiving by ball joint 10
12, the lower end for receiving sleeve 12 is connected with lower contact 21；
The upper end of the lower end of the top connection 1, the both ends of intermediate sleeve 9 and ball joint 10 is respectively provided with annular groove 13,
The first spring 3 is respectively arranged with the annular groove 13 vertically；The first cast scraper base 2 and the second cast scraper base 22
It is cylindrical it is upper be evenly distributed three strip grooves 14, scraper 7, and the bottom surface of scraper 7 and bar are embedded with the strip groove 14
Second spring 8 is radially embedded between connected in star 14, and makes three strip grooves 14 on the first cast scraper base 2
It is staggered, makes in six strip grooves 14 circumferentially from one another with three strip grooves 14 on the second cast scraper base 22
Six scrapers 7 of setting-in, which cooperate, circumferentially realizes 360 ° of all standings.
The both ends of the scraper 7 symmetrically have the ring-shaped step 16 of first annular step 15 and second；First cast is scraped
The both ends of the cast scraper base 22 of tool rest 2 and second are symmetrically set with sliding sleeve 4 and piston 5, and the piston 5 is located in sliding sleeve 4, and
Piston 5 is connected by piston pin 17 with the first corresponding cast scraper base 2 or the second cast scraper base 22, make piston 5 with
A sap cavity 23 is formed between the outer end of sliding sleeve 4；The sap cavity 23 is right by the first cast scraper base 2 or the second cast scraper base 22
The inner chamber insertion of the cast scraper base 2 of inlet opening 24 and first or the second cast scraper base 22 that should be formed with；The inner of the sliding sleeve 4
Internal diameter is slightly larger than the external diameter of first annular step 15, and the inner internal diameter of the piston 5 is slightly larger than the external diameter of the second ring-shaped step 16；
The outer end of the sliding sleeve 4 of the upper end of first cast scraper base 2 suit is inserted into annular groove after compressing the first spring 3
It is connected respectively with top connection 1 and intermediate sleeve 9 in 13 and by release pin 6, the upper end of the second cast scraper base 2 suit
The outer end of sliding sleeve 4 be inserted into after compressing the first spring 3 in annular groove 13 and by release pin 6 respectively with intermediate sleeve 9 and
Ball joint 10 is connected, and the inner of sliding sleeve 4 is fitted in the first annular step 15 at the both ends of scraper 7, scraper 7 is compressed second
Spring 8 is retracted to and the cylindrical concordant state of sliding sleeve 4；
The lower end of the ball joint 10 is connected with the first ball seat 11 by the first ball seat pin 18, passes through the second ball seat pin
Nail 19 is connected with the second ball seat 20, and the internal diameter of the first ball seat 11 is more than the internal diameter of the second ball seat 20, and makes the first ball seat 11
In the top of the second ball seat 20.
Operation principle：After the present invention is connected on tubing string with downhole designs position is arrived under tubing string, in tubing string for the first time
A small ball is put into, small ball is setting when suppressing again to tubing string to 5.4MPa or so after the second ball seat 20, and well liquid is from feed liquor
Hole 24 enters sap cavity 23 and promotes sliding sleeve 4 to cut release pin 6, and sliding sleeve 4 compresses the first ring that the first spring 3 departs from the both ends of scraper 7
It is pressed in after shape step 15 on second ring-shaped step 16 at the both ends of scraper 7, scraper 7 all ejects in the presence of second spring 8.After
It is continuous to be forced into 10MPa, cut the second ball seat pin 19 and destroy the second ball seat 20, the second ball seat 20 and small ball from sleeve 12 of receiving
Fall into the basket of receiving of the upper end of lower contact 21, will start to scrape wall operation after pressure release in tubing string.After the completion of wall operation is scraped,
Put into a big steel ball in tubing string for second, big steel ball is setting to be suppressed to 16.2MPa or so to keeping a grip on again after the first ball seat 11
When, well liquid enters sap cavity 23 from inlet opening 24 and promotes piston 5 to cut piston pin 17, and continuing to be forced into 21MPa makes the interior of piston 5
Side pressure is all withdrawn on second ring-shaped step 16 at the both ends of scraper 7, by scraper 7.Continue to be forced into 27.6MPa, cut first
Ball seat pin 18 destroys the first ball seat 11, the first ball seat 11 and big steel ball and falls into receiving for the upper end of lower contact 21 from sleeve 12 of receiving
Lan Zhong, at the same time, the inner first annular step 15 for being pressed in the both ends of scraper 7 again of sliding sleeve 4 in the presence of the first spring 3
On, shaft bottom will be drilled into start clean-out service under after pressure release in tubing string, now the present invention returns to original state of going into the well, well-flushing
Tubing string is proposed after the completion of operation.Lower contact 21, sleeve 12 of receiving, ball joint 10 and piston 5, sliding sleeve 4 are unloaded, is taken out
The steel ball of input and the ball seat destroyed, first ball seat 11 and second is reconnected by ball seat pin in the lower end of ball joint 10
Ball seat 20, sliding sleeve 4 is assembled after reconnecting piston 5 by piston pin fixed 17 on the first scraper base 2 and the second scraper base 22, it is whole
Body assembles again can carry out next subjob.
The lower end of lower contact 21 of the present invention can directly couple gauguste cutter, and drifting operation can be completed during going into the well, real
Drifting can be completed, scrape the multinomial underground work such as wall, well-flushing by having showed one-trip string and going into the well.
Lower contact 21 of the present invention can connect drill bit, the footwear that rub, milling shoe, realize that one-trip string completion of going into the well is bored, rubbed, milling, scrapes wall, washes
The multi-mode operations such as well.
Above-described embodiment, simply presently preferred embodiments of the present invention, is not used for limiting the scope of the present invention, therefore all with this
The equivalent variations that content described in invention claim is done, it all should be included within scope of the invention as claimed.
Claims (2)
1. a kind of controllable multi-functional wall scraper of scraper, including center have the top connection (1) and lower contact (21) of through hole, its feature
It is：The lower end of the top connection (1) is connected with the first cast scraper base (2), and the lower end of the first cast scraper base (2) leads to
Cross intermediate sleeve (9) and be connected with the second cast scraper base (22), the lower end of the second cast scraper base (22) is connect by ball seat
Head (10) is connected with sleeve of receiving (12), and the lower end of the sleeve of receiving (12) is connected with lower contact (21)；
The upper end of the lower end of the top connection (1), the both ends of intermediate sleeve (9) and ball joint (10) is respectively provided with annular groove
(13), the first spring (3) is respectively arranged with vertically in the annular groove (13)；The first cast scraper base (2) and the second pipe
Type scraper base (22) it is cylindrical it is upper be evenly distributed three strip grooves (14), be embedded with scraper in the strip groove (14)
(7), and between scraper (7) bottom surface and strip groove (14) radially it is embedded with second spring (8)；
The both ends of the scraper (7) symmetrically have first annular step (15) and the second ring-shaped step (16)；First cast
The both ends of scraper base (2) and the second cast scraper base (22) are symmetrically set with sliding sleeve (4) and piston (5), piston (5) position
In sliding sleeve (4), and piston (5) is scraped by piston pin (17) and the first corresponding cast scraper base (2) or the second cast
Tool rest (22) connects, and makes to form a sap cavity (23) between piston (5) and sliding sleeve (4) outer end；The sap cavity (23) passes through first
The corresponding inlet opening (24) being formed with of cast scraper base (2) or the second cast scraper base (22) and the first cast scraper base (2) or the
The inner chamber insertion of two cast scraper bases (22)；The inner internal diameter of the sliding sleeve (4) is slightly larger than the external diameter of first annular step (15),
The inner internal diameter of the piston (5) is slightly larger than the external diameter of the second ring-shaped step (16)；
It is recessed that annular is inserted into after outer end the first spring of compression (3) of the sliding sleeve (4) of first cast scraper base (2) the upper end suit
It is connected respectively with top connection (1) and intermediate sleeve (9) in groove (13) and by release pin (6), the second cast scraper base
(2) outer end of the sliding sleeve (4) of upper end suit is inserted into annular groove (13) after compressing the first spring (3) and passes through release pin
(6) it is connected respectively with intermediate sleeve (9) and ball joint (10), and the inner of sliding sleeve (4) is fitted in the first of scraper (7) both ends
On ring-shaped step (15), scraper (7) is compressed second spring (8) and be retracted to and the cylindrical concordant state of sliding sleeve (4)；
The lower end of the ball joint (10) is connected with the first ball seat (11) by the first ball seat pin (18), passes through the second ball seat
Pin (19) is connected with the second ball seat (20), and the internal diameter of the first ball seat (11) is more than the internal diameter of the second ball seat (20), and makes the
One ball seat (11) is located at the top of the second ball seat (20).
A kind of 2. controllable multi-functional wall scraper of scraper according to claim 1, it is characterised in that：The first cast scraper
Seat (2) and the second cast scraper base (22) it is cylindrical it is upper be evenly distributed three strip grooves (14), and positioned at the first pipe
Three strip grooves (14) on type scraper base (2) and three strip groove (14) edges on the second cast scraper base (22)
Circumferential interlaced arrangement, six scrapers (7) of setting-in in six strip grooves (14) is cooperated and circumferentially realize 360 °
All standing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610136457.4A CN105625986B (en) | 2016-03-10 | 2016-03-10 | A kind of controllable multi-functional wall scraper of scraper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610136457.4A CN105625986B (en) | 2016-03-10 | 2016-03-10 | A kind of controllable multi-functional wall scraper of scraper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105625986A CN105625986A (en) | 2016-06-01 |
| CN105625986B true CN105625986B (en) | 2017-12-26 |
Family
ID=56041277
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610136457.4A Active CN105625986B (en) | 2016-03-10 | 2016-03-10 | A kind of controllable multi-functional wall scraper of scraper |
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| Country | Link |
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| CN (1) | CN105625986B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915075A (en) * | 2019-04-19 | 2019-06-21 | 新疆华油油气工程有限公司 | The downhole tool of logical function is scraped with milling |
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| CN106522883A (en) * | 2016-11-15 | 2017-03-22 | 中国石油化工股份有限公司 | Oil/gas well pipe cleaning and well washing integrated tool |
| CN109838217A (en) * | 2017-11-28 | 2019-06-04 | 中国石油大学(北京) | With brill pipeline scraper |
| CN110410038A (en) * | 2019-08-16 | 2019-11-05 | 中石化石油工程技术服务有限公司 | Scraper controllable type bores plug-drifting-and scrapes wall integral device and operation technique method |
| CN114737920B (en) * | 2021-01-07 | 2024-06-25 | 中国石油天然气股份有限公司 | Pigging scraping composite tool |
| CN112878962B (en) * | 2021-03-11 | 2022-03-25 | 西南石油大学 | Intelligent wall scraper for casing of ultra-deep well |
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|---|---|---|---|---|
| US4809779A (en) * | 1987-12-03 | 1989-03-07 | Vsesojuzny Nauchno-Issledovatelsky Institut Pokrepleniju Skvazhin I Burovym Rastvoram | Arrangement for cleaning internal surface of casing strings |
| CN2413023Y (en) * | 1999-11-22 | 2001-01-03 | 张顺 | Multi-functional casing scraper |
| CN2931775Y (en) * | 2006-05-12 | 2007-08-08 | 中国海洋石油总公司 | Highly effective pipeline scraper |
| CN201428431Y (en) * | 2009-06-15 | 2010-03-24 | 中国石油集团西部钻探工程有限公司克拉玛依钻井工艺研究院 | Tube inside wall scraping device |
| CN204827314U (en) * | 2015-07-23 | 2015-12-02 | 中国石油化工股份有限公司 | Borehole operation leads to integrated instrument of scraping |
| CN205591887U (en) * | 2016-03-10 | 2016-09-21 | 宝鸡市奥通石油机械有限责任公司 | Controllable multi -functional wall scraping device of scraper |
-
2016
- 2016-03-10 CN CN201610136457.4A patent/CN105625986B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4809779A (en) * | 1987-12-03 | 1989-03-07 | Vsesojuzny Nauchno-Issledovatelsky Institut Pokrepleniju Skvazhin I Burovym Rastvoram | Arrangement for cleaning internal surface of casing strings |
| CN2413023Y (en) * | 1999-11-22 | 2001-01-03 | 张顺 | Multi-functional casing scraper |
| CN2931775Y (en) * | 2006-05-12 | 2007-08-08 | 中国海洋石油总公司 | Highly effective pipeline scraper |
| CN201428431Y (en) * | 2009-06-15 | 2010-03-24 | 中国石油集团西部钻探工程有限公司克拉玛依钻井工艺研究院 | Tube inside wall scraping device |
| CN204827314U (en) * | 2015-07-23 | 2015-12-02 | 中国石油化工股份有限公司 | Borehole operation leads to integrated instrument of scraping |
| CN205591887U (en) * | 2016-03-10 | 2016-09-21 | 宝鸡市奥通石油机械有限责任公司 | Controllable multi -functional wall scraping device of scraper |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915075A (en) * | 2019-04-19 | 2019-06-21 | 新疆华油油气工程有限公司 | The downhole tool of logical function is scraped with milling |
| CN109915075B (en) * | 2019-04-19 | 2021-04-13 | 新疆华油油气工程有限公司 | Downhole tool with milling and scraping functions |
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| Publication number | Publication date |
|---|---|
| CN105625986A (en) | 2016-06-01 |
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