CN103334716B - A kind of composite tube scraper - Google Patents
A kind of composite tube scraper Download PDFInfo
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- CN103334716B CN103334716B CN201310298346.XA CN201310298346A CN103334716B CN 103334716 B CN103334716 B CN 103334716B CN 201310298346 A CN201310298346 A CN 201310298346A CN 103334716 B CN103334716 B CN 103334716B
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- scraper
- center tube
- ball seat
- piston
- tube
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Abstract
The invention provides a kind of composite tube scraper, comprise symmetrical structure and upper and lower joint; Two cover scrapers of upper and lower two central tubes of described symmetrical structure, connection two central tubes, the piston structure of driving scraper; Described upper and lower two central tubes are connected by center sub, and two central tubes are communicated with; Be centrosymmetric with center sub; Upper center tube connects upper blade, has space, has sheet spring to support in space, upper blade extruding plate spring between upper center tube and upper blade; This pipeline scraper, except having common pipeline scraper function, can also circulate, and also can enter barefoot interval and light turn below.
Description
Technical field
The present invention relates to a kind of composite tube scraper, belong to field of mechanical technique.
Background technology
After existing pipeline scraper enters well, after internal surface of sleeve pipe attachment can be removed, but can not circulate, bore hole can not be entered and can not rotate.Take ground out of as pipeline scraper removed attachment, need former pipeline scraper to trip out well head, separately next time is bored and pipeline scraper is removed attachment, utilizes mud to take ground out of.Utilize existing pipeline scraper completion, need first pipe cleaning, rear well-flushing, then simulate drifting, need three brills just can complete, costly time-consuming.
Summary of the invention
The invention provides a kind of composite tube scraper, this pipeline scraper, except having common pipeline scraper function, can also circulate, also can enter barefoot interval and light turn below, in a Completion Operations, the time of nearly 36 hours can be saved, improve timeliness, can once cost-saving 200,000.
For solving above technical problem, the invention provides following technical scheme: a kind of composite tube scraper, comprising symmetrical structure and top connection and lower contact; Two cover scrapers of upper and lower two central tubes of described symmetrical structure, connection two central tubes, the piston structure of driving scraper; Described upper and lower two central tubes are connected by center sub, and two central tubes are communicated with; Be centrosymmetric with center sub; Upper center tube connects upper blade, has space, has sheet spring to support in space, upper blade extruding plate spring between upper center tube and upper blade; The both sides of upper blade connect upper piston structure, and described upper piston structure comprises two upper pistons and two upper piston covers, and upper piston is arranged between upper center tube and upper piston cover, for being slidably connected, the end of two upper pistons has inclined-plane, and inclined-plane is towards sheet spring, and inclined-plane is communicated with upper center tube; Upper piston is positioned central tube by pin; Described upper blade both sides have domatic, two domatic squeeze flow; Described pipeline scraper also includes top connection and lower contact; Described lower contact inside connects web plate, and the inner side of web plate has ball seat, and ball seat is connected to lower center tube by ball seat cover; Described top connection is connected to the top of upper center tube.
Further, two upper pistons and two lower pistons all have pin hole, are connected to upper lower center tube by pin.
Further, the internal face of described ball seat has slope, and ball seat and ball seat overlap and adopt pin to be connected.
Further, described upper piston cover is connected to upper center tube by internal and external threads joint.
This composite tube scraper that the present invention relates to, machine construction principle: scraper is contained in the center axial trough of pipeline scraper, can reduce or support greatly at the diameter of the effect lower coating blade of groove internal sheet spring, when entering after in the sleeve pipe less than scraper diameter, when scraper moves up and down, just can the attachment of internal surface of sleeve pipe and cement sheath be scraped in well, through pitching, scraper is being shunk, again pipeline scraper tubing string is lowered in bore hole well, utilize slush pump that the attachment mud scraped in well is taken out of well, achieve pipe cleaning, well-flushing and simulation drifting operation one-trip string have come.If use original pipeline scraper, first pipe cleaning, rear well-flushing, then simulate drifting three brills and just can complete, and only just complete with a brill by composite tube scraper.Both can remove internal surface of sleeve pipe attachment, and well can also be taken out of removing internal surface of sleeve pipe attachment by circulating mud, also can enter barefoot interval down.Need the work repeatedly pulled out of hole in prior art, utilize this pipeline scraper once to descend brill to complete.
Accompanying drawing explanation
Fig. 1 is a kind of composite tube scraper structure chart of the present invention;
Fig. 2 is a kind of composite tube scraper ball seat of the present invention enlarged drawing;
A kind of composite tube scraper upper center tube of Fig. 3 the present invention johning knot composition;
Detailed description of the invention
As shown in Figure 1-Figure 3, composite tube scraper, entirety is made up of top connection 1, upper piston 2, upper piston cover 3, upper blade 4, central tube 5, lower coating blade 6, lower piston cover 7, lower piston 8, ball seat cover 9, lower contact 10, web plate 11, ball seat 12, pin 13, anti-tripping screw 14, lower fluid cylinder connector 15, pin 16, lock ring 17, sheet spring 18 etc.Wherein, central tube 5 comprises upper center tube and lower center tube, is connected between two central tubes by center sub.
Each parts installation process is as follows: load on central tube 5 by upper blade 4, sheet spring 8, and upper piston 2, upper piston cover 3, lock ring 17 are assembled to top connection 1, will assemble top connection 1 assembly and be connected to central tube 5 upper end, and pin 16 is loaded onto by adjustment upper piston cover 3; Sheet spring 8, lower coating blade 6 load on central tube 5, and lower piston 8, lower piston cover 7, lock ring 17 load on lower fluid cylinder connector 15, will assemble lower fluid cylinder connector 15 assembly and be connected to central tube 5 lower end, and adjustment lower piston overlaps 7 first-class pins 16; Again ball seat 12, pin 13 are loaded the lower end of lower fluid cylinder connector assembly, connect ball seat cover 9, web plate 11 and lower contact 10 are connected to cover for seat 9 lower end of receiving, first-class anti-tripping screw 14, whole composite tube scraper installation.
After this pipeline scraper enters corresponding sleeve pipe, scraper is compressed and under the effect of sheet spring 18, is scraped bits (the same with conventional pipeline scraper) to corresponding internal surface of sleeve pipe; After scraping wall, from oil pipe pitching, after steel ball arrives pipeline scraper ball seat 12, progressively suppress and shop bolt on piston 16 is cut off, the compression of pipeline scraper scraper is entered fluid cylinder, when continuing to suppress a certain setting value, ball seat 12 is struck off, and ball seat 12 and steel ball all fall on ball seat cover 9 and web plate 11; Then continue lower tubular column to shaft bottom, carry out circulation well cleanup, pull out of hole after well-flushing lower completion practice tubing string.
Internal surface of sleeve pipe bur and cement sheath, mainly before formation testing acid fracturing and lower downhole tool packer, in order to make instrument can play a role in down-hole when completion practice, must be removed and take well head out of by this pipeline scraper.After drilling engineering terminates, under lower going-into-well before instrument, this pipeline scraper is connected on drilling rod, be lowered in corresponding sleeve pipe to moving up and down, utilize this pipeline scraper scraper elasticity, internal surface of sleeve pipe bur and cement sheath are removed, pass through pitching again, utilize the piston of this pipeline scraper that scraper is regained, then continue this pipeline scraper to be lowered in bore hole well, the projected depth that pipeline scraper enters under arriving tubing string, carry out the circulation of huge discharge, internal surface of sleeve pipe is scraped attachment and takes well out of, make well clean clean, be convenient to downhole tool and effectively play a role.
Detailed description of the invention of the present invention does not form the restriction to the application's scope; within every spirit in the present invention's design and principle, any amendment that one of skill in the art can make, equivalent to replace and improvement etc. all should be included within protection scope of the present invention.
Claims (2)
1. a composite tube scraper, is characterized in that, described pipeline scraper comprises symmetrical structure and upper and lower joint; The piston structure that described symmetrical structure comprises upper and lower two central tubes, connects two cover scrapers of two central tubes, drives scraper; Described upper and lower two central tubes are connected by center sub, and two central tubes are communicated with; Be centrosymmetric with center sub; Upper center tube connects upper blade, has space, has sheet spring to support in space, upper blade extruding plate spring between upper center tube and upper blade; The both sides of upper blade connect upper piston structure, and described upper piston structure comprises two upper pistons and two upper piston covers, and upper piston is arranged between upper center tube and upper piston cover, for being slidably connected, the end of two upper pistons has inclined-plane, and inclined-plane is towards sheet spring, and inclined-plane is communicated with upper center tube; Upper piston is positioned central tube by pin; Upper blade both sides have domatic, the inclined-plane squeeze flow of the domatic and upper piston of upper blade; Described pipeline scraper also includes top connection and lower contact; Described lower contact inside connects web plate, and the inner side of web plate has ball seat, and ball seat is connected to lower center tube by ball seat cover; Described top connection is connected to the top of upper center tube; Two upper pistons and two lower pistons all have pin hole, are connected to upper lower center tube by pin; The internal face of described ball seat has slope, and ball seat and ball seat overlap and adopt pin to be connected.
2. a kind of composite tube scraper according to claim 1, is characterized in that, described upper piston cover is connected to upper center tube by internal and external threads joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310298346.XA CN103334716B (en) | 2013-07-17 | 2013-07-17 | A kind of composite tube scraper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310298346.XA CN103334716B (en) | 2013-07-17 | 2013-07-17 | A kind of composite tube scraper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103334716A CN103334716A (en) | 2013-10-02 |
| CN103334716B true CN103334716B (en) | 2016-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310298346.XA Active CN103334716B (en) | 2013-07-17 | 2013-07-17 | A kind of composite tube scraper |
Country Status (1)
| Country | Link |
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| CN (1) | CN103334716B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018810A (en) * | 2013-12-10 | 2014-09-03 | 中国石油化工股份有限公司 | Oil-gas well pipe cleaning and well washing integral tool |
| CN104653154B (en) * | 2015-02-25 | 2017-06-13 | 中国石油天然气股份有限公司 | Drifting and scraping integrated tool |
| CN106285563B (en) * | 2015-06-01 | 2019-08-02 | 中国石油天然气股份有限公司 | Wall scraper and well-flushing wall scraping method |
| 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 |
| CN107605417A (en) * | 2017-10-16 | 2018-01-19 | 天津盛鑫华瑞石油技术有限公司 | Pipe cleaning well-flushing short-circuit cycle valve |
| CN108104771B (en) * | 2017-12-07 | 2020-07-03 | 中国海洋石油集团有限公司 | Large reducing sleeve cleaning tool |
| CN110410039B (en) * | 2019-09-09 | 2021-06-08 | 中国石油大学(华东) | A casing scraper for oil field |
| CN112252987B (en) * | 2020-10-22 | 2022-09-27 | 北京探矿工程研究所 | Drilling reamer and operation method thereof |
| CN114458242B (en) * | 2021-03-22 | 2023-10-31 | 中国海洋石油集团有限公司 | Scraper tube well-flushing filtering device and well-flushing filtering method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4189000A (en) * | 1978-06-26 | 1980-02-19 | Best David M | Casing scraper |
| CN1067703A (en) * | 1992-06-26 | 1993-01-06 | 罗绍东 | Automatic oil well wax cleaning aparatus |
| US6343648B1 (en) * | 1998-06-23 | 2002-02-05 | Specialised Petroleum Services Limited | Down-hole tool with detachable cleaning pads |
| CN201826811U (en) * | 2010-10-12 | 2011-05-11 | 谢照宽 | Drifting scraping device |
| CN202832393U (en) * | 2012-10-29 | 2013-03-27 | 中国石油化工股份有限公司 | Drifting scraping integration tool |
| CN202882806U (en) * | 2012-10-12 | 2013-04-17 | 中国石油集团长城钻探工程有限公司 | Drill column type debris bed eliminating tool |
| CN203347749U (en) * | 2013-07-17 | 2013-12-18 | 新疆力信油田工程技术有限公司 | Composite tube scraper |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2499532C (en) * | 2004-03-11 | 2012-11-20 | Smith International, Inc. | Casing scraper |
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2013
- 2013-07-17 CN CN201310298346.XA patent/CN103334716B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4189000A (en) * | 1978-06-26 | 1980-02-19 | Best David M | Casing scraper |
| CN1067703A (en) * | 1992-06-26 | 1993-01-06 | 罗绍东 | Automatic oil well wax cleaning aparatus |
| US6343648B1 (en) * | 1998-06-23 | 2002-02-05 | Specialised Petroleum Services Limited | Down-hole tool with detachable cleaning pads |
| CN201826811U (en) * | 2010-10-12 | 2011-05-11 | 谢照宽 | Drifting scraping device |
| CN202882806U (en) * | 2012-10-12 | 2013-04-17 | 中国石油集团长城钻探工程有限公司 | Drill column type debris bed eliminating tool |
| CN202832393U (en) * | 2012-10-29 | 2013-03-27 | 中国石油化工股份有限公司 | Drifting scraping integration tool |
| CN203347749U (en) * | 2013-07-17 | 2013-12-18 | 新疆力信油田工程技术有限公司 | Composite tube scraper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103334716A (en) | 2013-10-02 |
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Effective date of registration: 20170721 Address after: 430040, Hubei, Wuhan, East and West Lake, gold and Silver Lake, Ma Chi Road, South Central School Patentee after: DOWNHOLE TESTING COMPANY, SINOPEC JIANGHAN PETROLEUM ENGINEERING CO., LTD. Address before: 830000, 38 South Street, Urumqi economic and Technological Development Zone, the Xinjiang Uygur Autonomous Region, Guangzhou Patentee before: Xinjiang Lixin Oilfield Engineering Co., Ltd. |