CN105672915A - Outer-diameter-variable cutting bed removing tool - Google Patents
Outer-diameter-variable cutting bed removing tool Download PDFInfo
- Publication number
- CN105672915A CN105672915A CN201610203514.6A CN201610203514A CN105672915A CN 105672915 A CN105672915 A CN 105672915A CN 201610203514 A CN201610203514 A CN 201610203514A CN 105672915 A CN105672915 A CN 105672915A
- Authority
- CN
- China
- Prior art keywords
- cutting bed
- cutter groove
- scraper
- diameter
- borehole
- 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.)
- Pending
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Classifications
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
Abstract
The invention discloses an outer-diameter-variable cutting bed removing tool. The outer-diameter-variable cutting bed removing tool comprises an upper connector, a cylindrical body and a lower connector, which are arranged in sequence from top to bottom, wherein a cutter groove is formed in the outer surface of the cylindrical body; a scraping knife, which is fixed in the axial direction and fixed in the radial direction, is embedded into the cutter groove; a spring is arranged between the scraping knife and the bottom surface of the cutter groove; the scraping knife is supported by the spring; and the upper and lower ends of the spring are fixed on the bottom surface of the cutter groove. By adopting a structure of supporting the scraping knife in the radial direction, in a drilling process of a drilling tool, the outer diameter of the scraping knife can be changed along the size of a borehole, so that the outer diameter of the tool can be changed along the size of the borehole; when a build section or an irregular borehole is met, the outer diameter of the cutting bed removing tool can be changed along the size of the borehole, so that drilling resistance encountering risks can be effectively reduced; and meanwhile, the service life is prolonged.
Description
Technical field
The present invention relates to drilling engineering technical field, particularly to the cutting bed cleanout tool of variable external diameter in a kind of high angle hole drilling process.
Background technology
High angle hole is as the effective means of low cost development marginal oil field, it has also become one of most commonly used well type of field use both at home and abroad. But, the well cleaning problems of high angle hole is the difficult problem that industry is generally acknowledged, pile up the cutting bed generated and can bring out various down hole problem even accident, and the means of tradition hole cleaning and way can not effectively solve this problem, the serious lifting restricting drillng operation efficiency. Use the cutting bed cleanout tool can Cutting Disposal effectively and rapidly with boring, it is ensured that well cleans, and improves work efficiency. Some problems yet suffered from present are that tradition cutting bed remover is slightly larger in dimension than with the drilling rod size bored, and increase the risk of tight trip while cleaning well; Simultaneously by on-the-spot applicable cases statistical analysis, tool wear is serious, and after tool portion abrasion, whole instrument will be unable to use, and economic benefit is relatively low. According to on-site actual situations and condition, develop more applicable cutting bed cleanout tool and will effectively improve working performance.
Summary of the invention
The present invention solves that the technical problem existed in known technology provides a kind of variable external diameter cutting bed cleanout tool, the external diameter of this instrument can change with borehole size, it is possible to effectively reduces tight trip risk, improves service life simultaneously.
The present invention solves that the technical problem existed in known technology is adopted the technical scheme that: a kind of variable external diameter cutting bed cleanout tool, including the top connection set gradually from top to bottom, cylindrical body and lower contact, the outer surface of described cylindrical body is provided with cutter groove, the scraper that axially-fixed and radial is movable it is embedded with in described cutter groove, it is provided with bow spring between the bottom surface of described scraper and described cutter groove, described scraper is supported by described bow spring, and the two ends up and down of described bow spring are fixed on the bottom surface of described cutter groove.
Described scraper adopts PDC composite cutting edge, and described PDC composite cutting edge is embedded on the cutter hub of described scraper.
Described scraper is screw type scraper.
Maximal clearance between the bottom surface of described scraper and described cutter groove is 25.4mm.
The present invention has the advantage that and has the benefit effect that by adopting bow spring to support the structure of scraper diametrically, in the process that drilling tool removes, the external diameter of scraper can change with borehole size, and then make the external diameter of this instrument can change with borehole size, when running into increasing hole angle section or irregular borehole, the external diameter of cutting bed cleanout tool can change with the change of borehole size, it is possible to effectively reduces tight trip risk, improves service life simultaneously. The present invention adopts screw type scraper, and incoming flow has stronger guide effect, it is possible to is effectively improved drilling fluid and returns out speed in annular space; Instrument is with causing fluid turbulence degree in annular space to increase when boring and rotate simultaneously, makes landwaste be evenly distributed in annular space, it is possible to effectively to prevent cutting bed from being formed, and makes landwaste efficiently migrate in the air at drilling tool top macro ring and returns out well head. Screw type scraper is inlayed PDC composite cutting edge, it is possible to be effectively improved efficiency and the tool life of cutting cutting bed.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention;
The scraper that Fig. 2 is the present invention is arranged on the structural representation in cutter groove with bow spring;
Fig. 3 is the A-A cut-away view of Fig. 1.
In figure: 1, top connection, 2, scraper, 3, cylindrical body, 4, bow spring, 5, lower contact.
Detailed description of the invention
For the summary of the invention of the present invention, feature and effect can be further appreciated that, hereby enumerate following example, and it be as follows to coordinate accompanying drawing to describe in detail:
Refer to Fig. 1～Fig. 3, a kind of variable external diameter cutting bed cleanout tool, including the top connection 1 set gradually from top to bottom, cylindrical body 3 and lower contact 5, the outer surface of described cylindrical body 3 is provided with cutter groove, the scraper 2 that axially-fixed and radial is movable it is embedded with in described cutter groove, being provided with bow spring 4 between the bottom surface of described scraper 2 and described cutter groove, described scraper 2 is supported by described bow spring 4, and the two ends up and down of described bow spring 4 are fixed on the bottom surface of described cutter groove.
In the present embodiment, described scraper 2 adopts PDC composite cutting edge, described PDC composite cutting edge to be embedded on the cutter hub of described scraper 2, and part doctor can be changed after damaging. Described scraper 2 adopts the screw type scraper used on tradition cutting bed remover. Maximal clearance between the bottom surface of described scraper 2 and described cutter groove is 25.4mm.
The operation principle of the present invention:
Instrument is entered with under boring. Along with drilling tool rotates, the lower borehole wall cutting bed of scraper cutting. Simultaneously because cutting bed cleanout tool cross-sectional area is relatively big, ambient fluid substantially increases. The rotation of drilling tool adds drilling fluid turbulence level in annular space, has reached good cutting bed cleaning effect. Making a trip in process at drilling tool, when running into increasing hole angle section or irregular borehole, the external diameter of cutting bed cleanout tool can change with the change of borehole size simultaneously, it is possible to effectively reduces the frictional resistance in the process of making a trip, and reduces the risk of tight trip.
Although the preferred embodiments of the present invention being described above in conjunction with accompanying drawing; but the invention is not limited in above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is merely schematic; it is not restrictive; those of ordinary skill in the art is under the enlightenment of the present invention; without departing under present inventive concept and scope of the claimed protection situation, it is also possible to making a lot of form, these belong within protection scope of the present invention.
Claims (4)
1. a variable external diameter cutting bed cleanout tool, it is characterized in that, including the top connection set gradually from top to bottom, cylindrical body and lower contact, the outer surface of described cylindrical body is provided with cutter groove, the scraper that axially-fixed and radial is movable it is embedded with in described cutter groove, being provided with bow spring between the bottom surface of described scraper and described cutter groove, described scraper is supported by described bow spring, and the two ends up and down of described bow spring are fixed on the bottom surface of described cutter groove.
2. variable external diameter cutting bed cleanout tool according to claim 1, it is characterised in that described scraper adopts PDC composite cutting edge, and described PDC composite cutting edge is embedded on the cutter hub of described scraper.
3. variable external diameter cutting bed cleanout tool according to claim 1 and 2, it is characterised in that described scraper is screw type scraper.
4. variable external diameter cutting bed cleanout tool according to claim 1, it is characterised in that the maximal clearance between the bottom surface of described scraper and described cutter groove is 25.4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610203514.6A CN105672915A (en) | 2016-04-01 | 2016-04-01 | Outer-diameter-variable cutting bed removing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610203514.6A CN105672915A (en) | 2016-04-01 | 2016-04-01 | Outer-diameter-variable cutting bed removing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105672915A true CN105672915A (en) | 2016-06-15 |
Family
ID=56225233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610203514.6A Pending CN105672915A (en) | 2016-04-01 | 2016-04-01 | Outer-diameter-variable cutting bed removing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105672915A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448171A (en) * | 2017-07-20 | 2017-12-08 | 成都聚深科技有限责任公司 | The sucker rod high temperature paraffin removal mechanism of state Autonomous test |
| CN109296325A (en) * | 2018-10-10 | 2019-02-01 | 东北石油大学 | Jetting type wellbore cleaning means |
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| CN201334876Y (en) * | 2008-11-17 | 2009-10-28 | 任俊 | Spiral centering device for preventing from accumulating rock debris |
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| US20110048803A1 (en) * | 2009-08-28 | 2011-03-03 | Arrival Oil Tools, Inc. | Drilling cuttings mobilizer |
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| CN102777150A (en) * | 2012-07-02 | 2012-11-14 | 大庆大华宏业石油工程技术有限公司 | Gapless self-adapting scraper assembly |
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| WO2015150212A2 (en) * | 2014-04-02 | 2015-10-08 | Odfjell Partners Invest Ltd | Downhole cleaning apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448171A (en) * | 2017-07-20 | 2017-12-08 | 成都聚深科技有限责任公司 | The sucker rod high temperature paraffin removal mechanism of state Autonomous test |
| CN109296325A (en) * | 2018-10-10 | 2019-02-01 | 东北石油大学 | Jetting type wellbore cleaning means |
| CN109296325B (en) * | 2018-10-10 | 2020-10-30 | 东北石油大学 | Jet-type well cleaning tool |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160615 |