CN107100557A - Spiral wing centralizer for air down-the-hole hammer - Google Patents
Spiral wing centralizer for air down-the-hole hammer Download PDFInfo
- Publication number
- CN107100557A CN107100557A CN201710453835.6A CN201710453835A CN107100557A CN 107100557 A CN107100557 A CN 107100557A CN 201710453835 A CN201710453835 A CN 201710453835A CN 107100557 A CN107100557 A CN 107100557A
- Authority
- CN
- China
- Prior art keywords
- centralizer
- wing
- hole hammer
- air down
- air
- 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.)
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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
- 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
Abstract
The invention relates to a spiral wing centralizer for an air down-the-hole hammer, which comprises: the centralizer comprises a centralizer body and a centralizing wing; the centralizer body is tubular, and at least one centralizing wing is arranged on the outer wall of the middle section of the centralizer body; the centralizer is characterized in that the centralizing wings are spirally wound on the centralizer body, spiral guide grooves are formed among the centralizing wings, and composite material sheets are inlaid on the outer surfaces, the upper end faces and the lower end faces of the centralizing wings. The centralizer special for the air down-the-hole hammer with the structure can effectively centralize a drilling tool to reduce well deviation, simultaneously ensures the slag carrying capacity of air upward return, reduces the risk of drill sticking or drill burying, and improves the drilling quality and efficiency of the air down-the-hole hammer.
Description
Technical field
The present invention relates to air drilling apparatus field, and in particular to a kind of air down-hole hammer screw wing centralizer.
Background technology
During using air air-hammer drilling, after well depth is reached to a certain degree, drilling tool is often because length is long and sends out
Change shape, causes well bore to tilt, and is typically employed in drilling tool bottom to eliminate or reducing in this hole deviation phenomenon, engineering and installs righting additional
The mode of device carries out drilling tool righting, to reach the effect for eliminating or reducing hole deviation.
The centralizer of current air down-hole hammer mainly has two kinds, and a kind of is the onsite application situation according to air down-hole hammer
The ＇ of simple centralizer 100 of design, referring to accompanying drawing 1, the simple ＇ of centralizer 100 be a pipe body shape the ＇ of centralizer body 1 it is outer
Several steel plates arranged along its length are welded directly on a surface as the ＇ of centralizer wing 2, are welded with the ＇ of steel plate centralizer wing 2 top
Alloy is to reduce abrasion.This ＇ of simple centralizer 100 is simple in construction, low manufacture cost, is used on present air down-hole hammer
Centralizer is as master；But the form that its centralizer wing 2 ＇ is welded vertically, is unfavorable for returning on drilling cuttings, and rotational resistance is larger, easily
Cause the ＇ of centralizer wing 2 to fracture, cause the simple ＇ of centralizer 100 service life relatively low.It is another, apply mechanically oil drilling and use
The ＂ of spiral centering device 100, referring to accompanying drawing 2, the ＂ of spiral centering device 100 of the oil drilling ＂ of centralizer body 1 uses integrally casting
Shaping, structural strength is high, and the ＂ of helicla flute 3 is opened up on its excircle and then the spiral helicine ＂ of centralizer wing 2, anti-converging power is formed
By force；But the groove depth of the ＂ of helicla flute 3 between its centralizer wing 2 ＂ is shallower, groove width is smaller, in use, can protect under high-pressure slurry environment
That is returned on card drilling cuttings is smooth, but in the relatively low air pressure drilling of pressure, the passage returned on air and drilling cuttings is limited, row
Bits are smooth and easy bit freezing, particularly in the case where stopping supply, and the landwaste of whereabouts is easily on the ＂ of centralizer wing 2 and helicla flute
Accumulated in 3 ＂, significantly increase the risk of bit freezing or burying.
The foregoing ＇ of simple centralizer 100 and the ＂ of spiral centering device 100, the former is mostly live self-control, and the latter is direct
The centralizer of oil drilling is borrowed, is not really adapted to the actual operating conditions and environment of air drilling, is not strictly speaking
The centralizer that real suitable air down-hole hammer is used；And used with the gradually progressive and large area of air drilling technology, especially
It is that application of the air down-hole hammer drilling technology on modern project is further ripe, to improve the quality and effect of air air-hammer drilling
Rate, eliminates or reduces hole deviation phenomenon, it is ensured that the risk taken slag ability, lower bit freezing or burying returned on air, is highly desirable to
A kind of special centralizer is designed for air down-hole hammer.
The content of the invention
In view of the above-mentioned problems, inventor combines the actual operating conditions of air down-hole hammer, calculated and scene examination by multi-party
Test, propose a kind of special centralizer of air down-hole hammer, can effectively righting drilling tool to reduce hole deviation, while being returned on guarantee air
Slag ability is taken, lowers the risk of bit freezing or burying, the quality and efficiency of air air-hammer drilling is improved.
To reach above-mentioned technique effect, the technical solution adopted in the present invention is：
A kind of air down-hole hammer screw wing centralizer, including：Centralizer body and centralizer wing；The centralizer body is in
Tubulose, the two ends of centralizer body, which are respectively arranged with pin thread and box, the outer wall in centralizer body stage casing, sets at least one
The centralizer wing；The centralizer wing is made of steel plate, in the shape of a spiral around being located on the centralizer body, and between centralizer wing
Formed on spiral helicine guiding gutter, the outer surface and upper and lower end face of centralizer wing and stud with composite material sheet.
The centralizer of said structure, can effectively righting drilling tool, reduce hole deviation；Its centralizer wing is helped using oil drilling with spiral
The screw wing form of positive device, rotation torque is small, greatly improves the anti-converging power of centralizer wing, make centralizer wing be not easily broken and
Come off；Centralizer wing is made using narrow steel plate, the width and depth of guiding gutter is increased, slag is taken to be returned on air and provides sufficiently
Space, the risk taken slag ability, lower bit freezing or burying of enhancing air air-hammer drilling；The specific setting number of centralizer wing
Amount, can take the circumstances into consideration to increase and decrease depending on different drilling environments, take into account righting effect and take slag ability；Righting wing surface studs with composite wood
Tablet, lifts the abrasion-resistance of centralizer, improves service life.
Further, the centralizer wing is provided with three, on the outer wall for being circumferentially uniformly arranged on the centralizer body.
Three centralizer wings are set, the righting effect of centralizer can be taken into account, and guiding gutter takes slag ability, can in conventional air down-the-hole
It is general in hammer drill well.
Further, the centralizer body on the outside of the centralizer wing two ends is concavely provided with least one set of for Power Tong or spanner
The holding tank of clamping；Easy disassembly drilling tool and centralizer.
Further, the holding tank is provided with multigroup, and the claming angle of holding tank described in every group is different；Can be in drilling tool
Drilling tool and centralizer are directly dismounted during in different angles, using more convenient.
Further, the thickness of the centralizer wing is 24mm-30mm；With reference to Mechanics Calculation and field experiment situation, righting
Wing thickness is less than after 24mm, and intensity is not enough, and fragile, service life is short, and centralizer wing thickness is more than after 30mm, guiding gutter
Width reduces, and returns on air and takes slag passage and be limited, the probability of bit freezing or burying can steeply rise.
Further, the height of the centralizer wing is 55mm-63mm；With reference to Mechanics Calculation and field experiment situation, righting
The wing is highly less than after 55mm, and the scarce capacity for taking slag is returned on air, and centralizer wing is highly more than after 63mm, and centralizer wing rotation is turned round
Square is too big, frangibility and comes off.
Further, 19 ° -24 ° of the spiral angle of the centralizer wing；With reference to Mechanics Calculation and field experiment situation, righting
When the spiral angle of the wing is less than 19 °, rotation torque is excessive, vibrates larger during drilling, and spiral angle is more than after 24 °, stable to bore
The effect of tool is poor, and frictional resistance is larger when making a trip.
Further, it is provided with brill tooth on the outer surface of the composite material sheet；While wear-resisting, broken landwaste is had concurrently
Effect, reduces and is returned on bulky grain landwaste into guiding gutter by the possibility of card, improve the efficiency and quality of drilling.
Further, the brill tooth includes carbide drill tooth and diamond drill machine tooth, is mounted to by soldering described compound
On the outer surface of material piece；Ensure the intensity of inlaying of brill tooth, it is difficult for drop-off.
Further, the centralizer wing with centralizer body by being welded to connect, it is ensured that the intensity of this centralizer, and protect
Card centralizer wing will not come off easily.
In summary, using the special centralizer of the air down-hole hammer of above-mentioned technical proposal, can effectively righting drilling tool to subtract
Small hole deviation, while ensureing the risk taken slag ability, lower bit freezing or burying returned on air, improves the matter of air air-hammer drilling
Amount and efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of the simple centralizer of prior art；
Fig. 2 is the structural representation of prior art spiral centering device；
Fig. 3 is the dimensional structure diagram of the embodiment of the present invention；
Fig. 4 is the cross section structure diagram of A-A sections in Fig. 3；
Fig. 5 is the cross section structure diagram of B-B sections in Fig. 3.
Reference：
100 ＇-simple centralizer；1 ＇-centralizer body；2 ＇-centralizer wing；
100 ＂-spiral centering device；1 ＂-centralizer body；2 ＂-centralizer wing；3 ＂-helicla flute；
100- air down-hole hammer screw wing centralizers；1- centralizer bodies；11- pin threads；12- boxes；13- holding tanks；
2- centralizer wings；3- guiding gutters；4- composite material sheets
Embodiment
The embodiment of technical solution of the present invention is described in detail below in conjunction with accompanying drawing.
As shown in Figures 3 to 5, the present embodiment provides a kind of air down-hole hammer screw wing centralizer 100, including：Righting
Device body 1 and centralizer wing 2；In a tubular form, its two ends is respectively arranged with outside pin thread 11 and box 12, its stage casing centralizer body 1
At least one centralizer wing 2 is set, and the centralizer wing 2 is made of the narrower steel plate of thickness, steel plate is helped around being located in the shape of a spiral on wall
On positive device body 1, spiral helicine guiding gutter 3 is formed between centralizer wing 2, the space that slag is provided is taken to be returned on air；Centralizer wing 2
1 is arranged with least one set of holding tank 13 clamped for Power Tong or spanner on centralizer body on the outside of two ends, and easy disassembly is bored
Tool and centralizer；And holding tank 13, when being provided with multigroup, the claming angle of every group of holding tank 13 is preferably differed, to facilitate in drilling tool
Drilling tool and centralizer are directly dismounted during in different angles, using more convenient.
Centralizer wing 2 is with centralizer body 1 by being welded to connect, it is ensured that the intensity of this whole centralizer, and ensures righting
The wing 2 will not come off easily.The upper and lower end face of centralizer wing 2 is preferably arranged to fillet surface, to reduce the resistance made a trip；Centralizer wing 2
Composite material sheet 4 is studded with outer surface and upper and lower end face, the abrasion-resistance of whole centralizer is lifted, service life is improved；And
Brill tooth is provided with the outer surface of composite material sheet 4, while wear-resisting, the effect of broken landwaste is had concurrently, reduces bulky grain rock
Returned on bits into guiding gutter 3 by the possibility of card, improve the efficiency and quality of drilling.Conventional brill tooth has carbide drill tooth and gold
Hard rock is bored on tooth, the outer surface that composite material sheet 4 is mounted to by soldering, it is ensured that bore the intensity of inlaying of tooth, difficult for drop-off.
Found by multi-party Mechanics Calculation and field test, centralizer wing 2 is circumferentially equal on the outer wall of centralizer body 1
Even the righting effect to drilling tool is more stable when setting three, and guiding gutter 3 now takes that slag ability is stronger, can be conventional
It is general in air air-hammer drilling；Certainly, the visual different drilling environment of the specific setting quantity of centralizer wing 2 can take the circumstances into consideration to increase and decrease,
Righting effect can be taken into account and slag ability is taken.The thickness of centralizer wing 2 is preferably in the range of 24mm-30mm, and lid is less than because of thickness
After 24mm, intensity is not enough, and fragile, service life is short；And thickness is more than after 30mm, reduce with the width of guiding gutter 2, it is empty
Returned on gas take slag passage be limited, the probability of bit freezing or burying can steeply rise.The highly preferred 55mm-63mm of centralizer wing 2：Work as height
Degree is less than after 55mm, and the scarce capacity for taking slag is returned on air；And height is more than after 63mm, the rotation torque of centralizer wing 2 is too
Greatly, frangibility and come off.Meanwhile, preferably 19 ° -24 ° of the spiral angle of centralizer wing 2, with reference to Mechanics Calculation and field experiment situation,
When the spiral angle of centralizer wing 2 is less than 19 °, rotation torque is excessive, is vibrated during drilling larger；Spiral angle is more than after 24 °, surely
The effect for determining drilling tool is poor, and frictional resistance is larger when making a trip.
In the present embodiment, using external diameter 241mm, length 600mm air down-hole hammer is with screw wing centralizer 100 in Guizhou
Area carries out well wellbore construction experiment, and the upper end of centralizer body 1 sets box 12, and lower end sets pin thread 11, the upper and lower side of centralizer wing 2
Centralizer body 1 one group of holding tank 13 is set respectively, and two groups of claming angles of holding tank 13 are vertical；Centralizer wing 2 is in centralizer
Projected length on the axis of body 1 is 350mm, thickness 25mm, highly excellent 58mm, 20 ° of spiral angle；Test effect is good, does not have
Have and occurred centralizer wing 2 and fracture or drop phenomenon, also do not occur bit freezing and underground drilling accident.
Using the air down-hole hammer screw wing centralizer 100 of above-mentioned technical proposal, can effectively righting drilling tool, reduce well
Tiltedly；Its centralizer wing 2 uses the oil drilling ＂ of spiral centering device 100 screw wing form, and rotation torque is small, greatly improves
The anti-converging power of centralizer wing 2, makes centralizer wing 2 be not easily broken and come off；Centralizer wing 2 is made using narrow steel plate, water conservancy diversion is increased
The width and depth of groove 3, take slag and provide sufficient space to be returned on air, and enhancing air air-hammer drilling takes slag ability,
Lower the risk of bit freezing or burying；The specific setting quantity of centralizer wing 2, can take the circumstances into consideration to increase and decrease depending on different drilling environments, take into account
Righting effect and take slag ability；The surface of centralizer wing 2 studs with composite material sheet 4, lifts the abrasion-resistance of centralizer, and raising makes
Use the life-span.
In summary, the special centralizer of air down-hole hammer that the present embodiment is provided, can effectively righting drilling tool to reduce well
Tiltedly, while ensureing that is returned on air takes slag ability, lower the risk of bit freezing or burying, improve air air-hammer drilling quality and
Efficiency.
It should be noted that preferred embodiment above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to the foregoing embodiments for pipe, it will be understood by those within the art that：It is still
Technical scheme described in previous embodiment can be modified, or which part or all technical characteristic are carried out etc.
With replacement；And these modifications or replacement, the essence of appropriate technical solution is departed from technical scheme of the embodiment of the present invention
Scope, it all should cover among the claim of the present invention and the scope of specification.
Claims (10)
1. a kind of air down-hole hammer screw wing centralizer, it is characterised in that including：Centralizer body and centralizer wing；It is described to help
In a tubular form, the two ends of centralizer body are respectively arranged with pin thread and box, the outer wall in centralizer body stage casing to be set positive device body
Put at least one described centralizer wing；The centralizer wing is made of steel plate, in the shape of a spiral around being located on the centralizer body, and
Formed between centralizer wing on spiral helicine guiding gutter, the outer surface and upper and lower end face of centralizer wing and stud with composite material sheet.
2. air down-hole hammer screw wing centralizer according to claim 1, it is characterised in that
The centralizer wing is provided with three, on the outer wall for being circumferentially uniformly arranged on the centralizer body.
3. air down-hole hammer screw wing centralizer according to claim 1, it is characterised in that
Centralizer body on the outside of the centralizer wing two ends is concavely provided with least one set of holding tank clamped for Power Tong or spanner.
4. air down-hole hammer screw wing centralizer according to claim 3, it is characterised in that
The holding tank is provided with multigroup, and the claming angle of holding tank described in every group is different.
5. according to any described air down-hole hammer screw wing centralizers of claim 1-4, it is characterised in that
The height of the centralizer wing is 55mm-63mm.
6. according to any described air down-hole hammer screw wing centralizers of claim 1-4, it is characterised in that
The thickness of the centralizer wing is 24mm-30mm.
7. according to any described air down-hole hammer screw wing centralizers of claim 1-4, it is characterised in that
19 ° -24 ° of the spiral angle of the centralizer wing.
8. air down-hole hammer screw wing centralizer according to claim 1, it is characterised in that
Brill tooth is provided with the outer surface of the composite material sheet.
9. air down-hole hammer screw wing centralizer according to claim 8, it is characterised in that
The brill tooth includes carbide drill tooth and diamond drill machine tooth, and the outer surface of the composite material sheet is mounted to by soldering
On.
10. air down-hole hammer screw wing centralizer according to claim 1, it is characterised in that
The centralizer wing is with centralizer body by being welded to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710453835.6A CN107100557A (en) | 2017-06-15 | 2017-06-15 | Spiral wing centralizer for air down-the-hole hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710453835.6A CN107100557A (en) | 2017-06-15 | 2017-06-15 | Spiral wing centralizer for air down-the-hole hammer |
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| Publication Number | Publication Date |
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| CN107100557A true CN107100557A (en) | 2017-08-29 |
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ID=59660876
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710453835.6A Pending CN107100557A (en) | 2017-06-15 | 2017-06-15 | Spiral wing centralizer for air down-the-hole hammer |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2074808U (en) * | 1990-08-15 | 1991-04-10 | 大庆石油管理局钻井一公司 | Sprial wing widnow type drilling tool corrector |
| CN1644870A (en) * | 2005-02-01 | 2005-07-27 | 西南石油学院 | Stabilizer of gas drill horizontal well |
| CN103321594A (en) * | 2013-06-27 | 2013-09-25 | 中国海洋石油总公司 | Closed spiral wing anti-balling centralizer for well drilling |
| CN203640626U (en) * | 2013-11-05 | 2014-06-11 | 中国海洋石油总公司 | Down-the-hole drill centering device |
| CN204851097U (en) * | 2015-08-06 | 2015-12-09 | 北京泓宇恒业科技发展有限公司 | Reaming drilling string type stabilizer |
| CN205117234U (en) * | 2015-08-17 | 2016-03-30 | 中国海洋石油总公司 | Drilling tool reaming centralizer in pit |
| US20160265280A1 (en) * | 2014-11-05 | 2016-09-15 | Duane Shotwell | Reamer for Use in Drilling Operations |
| CN205936435U (en) * | 2016-06-02 | 2017-02-08 | 中国石油天然气股份有限公司 | Sucker rod self -lubricating spiral centralizer |
| CN207048696U (en) * | 2017-06-15 | 2018-02-27 | 贵州省地质矿产勘查开发局111地质大队 | Spiral wing centralizer for air down-the-hole hammer |
-
2017
- 2017-06-15 CN CN201710453835.6A patent/CN107100557A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2074808U (en) * | 1990-08-15 | 1991-04-10 | 大庆石油管理局钻井一公司 | Sprial wing widnow type drilling tool corrector |
| CN1644870A (en) * | 2005-02-01 | 2005-07-27 | 西南石油学院 | Stabilizer of gas drill horizontal well |
| CN103321594A (en) * | 2013-06-27 | 2013-09-25 | 中国海洋石油总公司 | Closed spiral wing anti-balling centralizer for well drilling |
| CN203640626U (en) * | 2013-11-05 | 2014-06-11 | 中国海洋石油总公司 | Down-the-hole drill centering device |
| US20160265280A1 (en) * | 2014-11-05 | 2016-09-15 | Duane Shotwell | Reamer for Use in Drilling Operations |
| CN204851097U (en) * | 2015-08-06 | 2015-12-09 | 北京泓宇恒业科技发展有限公司 | Reaming drilling string type stabilizer |
| CN205117234U (en) * | 2015-08-17 | 2016-03-30 | 中国海洋石油总公司 | Drilling tool reaming centralizer in pit |
| CN205936435U (en) * | 2016-06-02 | 2017-02-08 | 中国石油天然气股份有限公司 | Sucker rod self -lubricating spiral centralizer |
| CN207048696U (en) * | 2017-06-15 | 2018-02-27 | 贵州省地质矿产勘查开发局111地质大队 | Spiral wing centralizer for air down-the-hole hammer |
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Address after: 550008 No. 5 Baihua Avenue, Yunyan District, Guiyang City, Guizhou Province Applicant after: Guizhou Geological Engineering Survey and Design Institute Co.,Ltd. Address before: 550008 No. 5 Baihua Avenue, Yunyan District, Guiyang City, Guizhou Province Applicant before: Guizhou Institute of Geological Engineering Survey and Design |
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