CN117307063A - Double-section spiral rock debris removing tool - Google Patents
Double-section spiral rock debris removing tool Download PDFInfo
- Publication number
- CN117307063A CN117307063A CN202210708511.3A CN202210708511A CN117307063A CN 117307063 A CN117307063 A CN 117307063A CN 202210708511 A CN202210708511 A CN 202210708511A CN 117307063 A CN117307063 A CN 117307063A
- Authority
- CN
- China
- Prior art keywords
- spiral
- section
- helical
- double
- rack
- 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
Links
- 239000011435 rock Substances 0.000 title claims abstract description 44
- 230000007246 mechanism Effects 0.000 claims abstract description 4
- 239000000956 alloy Substances 0.000 claims description 15
- 229910045601 alloy Inorganic materials 0.000 claims description 15
- 238000005520 cutting process Methods 0.000 claims description 8
- 230000036346 tooth eruption Effects 0.000 claims description 8
- 238000005553 drilling Methods 0.000 abstract description 16
- 239000012530 fluid Substances 0.000 description 7
- 239000012634 fragment Substances 0.000 description 6
- 230000018109 developmental process Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007704 transition Effects 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- 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
- E21B17/22—Rods or pipes with helical structure
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention provides a double-section spiral rock debris removal tool, which comprises a cylindrical main body; the spiral racks are arranged on the outer wall of the main body, are spiral protruding mechanisms and form spiral grooves; the spiral rack is divided into two sections, namely a first spiral rack section and a second spiral rack section, the first spiral rack section is locked to have a large screw pitch relative to the second spiral rack section, and the second spiral rack section has a small screw pitch relative to the first spiral rack section. The invention adopts the double-section spiral rack section, and can achieve the purpose of removing rock scraps when the rock scraps exist in the drilling annulus.
Description
Technical Field
The invention relates to a double-section spiral rock debris removing tool, and belongs to the field of petroleum drilling.
Background
The long horizontal section horizontal well has wide application in the development process of oil and gas fields, can improve the productivity and reduce the cost. However, in practice, due to the structural reason of the well body, when the cuttings are returned from the annulus of the horizontal section in the longer horizontal section, the cuttings are very easy to be piled up into a bed at the bottom of the annulus, and as the cuttings are deposited, the contact surface between the drilling tool and the cuttings is increased, the torque is increased, so that the drilling tool is worn to increase the drilling speed and reduce the drilling speed, the whole drilling tool is blocked even if the drilling fluid cannot circulate, and finally the engineering can only be abandoned.
Through research, a plurality of rock debris removal tools are found in the market at present, and the tools mainly comprise spiral blades, V-shaped blades and straight prismatic blades. However, in the existing chip removing tool, the V-shaped blades are difficult to form a spiral flow field in the annular space, and the carrying capacity of the chip removing tool on rock chips is poor. In addition, the problems of poor lifting capacity to rock debris, poor cleaning effect and the like exist.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a double-section spiral rock debris removing tool, which adopts a double-section spiral rack section, and can achieve the purpose of removing rock debris when the rock debris exists in the drilling annulus.
The invention provides a double-section spiral rock debris removal tool, which comprises:
a cylindrical body;
the spiral racks are arranged on the outer wall of the main body, are spiral protruding mechanisms and form spiral grooves;
the spiral rack is divided into two sections, namely a first spiral rack section and a second spiral rack section, the first spiral rack section is locked to have a large screw pitch relative to the second spiral rack section, and the second spiral rack section has a small screw pitch relative to the first spiral rack section.
The invention further improves that a plurality of cutting teeth are arranged on the spiral rack.
The invention further improves that the cutting teeth are alloy teeth which are divided into a plurality of types according to the diameter, and the alloy teeth are regularly arranged according to the order of the diameters.
A further development of the invention consists in that the edges of the first helical rack section are sharper than the edges of the second helical rack section, the cross-sectional edges of the first helical rack section forming helical spikes.
A further improvement of the present invention is that the number of the helical racks is three, and the helical racks are uniformly arranged in the circumferential direction of the main body.
A further development of the invention consists in that the ratio of the length of the first helical rack section to the length of the second helical rack section is 1.7:1.
the invention is further improved in that the upper end of the main body is provided with an upper joint for connecting the drill collar, and the upper joint is provided with external threads.
The invention further improves that the lower end of the main body is provided with a lower joint for connecting a drill bit, and the lower joint is provided with internal threads.
A further development of the invention consists in that the width of the first helical rack section is greater than the width of the second helical rack section.
A further improvement of the invention is that the helical rack and the helical groove are both arranged in a clockwise rotation.
Compared with the prior art, the invention has the advantages that:
the invention relates to a double-section spiral rock debris removing tool, which adopts a double-section spiral rack section, wherein the first spiral rack section has poor rock debris removing performance due to large pitch and sharp section, and mainly aims to grind large rock debris, move the rock debris to the position of a second spiral rack section, and the second spiral rack has small pitch and smooth section; compared with the traditional single-section spiral structure, the cleaning effect is better. Through the structure of the double-section spiral rack, the problem that rock scraps are easy to block when the rock scraps exist in the drilling annulus is solved, and the purpose of removing the rock scraps can be achieved.
According to the double-section spiral rock debris removal tool, the spiral sharp knife is arranged on the first spiral rack section, so that the purposes of breaking rock and grinding rock debris can be achieved. Alloy teeth with different diameters are arranged on the spiral rack, so that the purpose of further grinding rock fragments can be achieved.
The tool is provided with the male connector and the female connector, and can be conveniently arranged between the drill collar and the drill bit by adopting internal and external threaded connection.
Drawings
Preferred embodiments of the present invention will be described in detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a schematic diagram of a dual-stage helical debris removal tool according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a dual stage helical debris removal tool according to an embodiment of the present invention;
FIG. 3 is a schematic view in section A-A of FIG. 1;
fig. 4 is a schematic view of section B-B of fig. 1.
The figures are not drawn to scale.
The meaning of the reference numerals in the drawings is as follows:
1. the main body comprises a main body, 2, spiral racks, 11, an upper joint, 12, a lower joint, 13, external threads, 14, internal threads, 21, a first spiral rack section, 22, a second spiral rack section, 23, alloy teeth, 24, a spiral sharp knife, 25 and a spiral groove.
Detailed Description
In order to make the technical solution and advantages of the present invention more apparent, exemplary embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. It will be apparent that the described embodiments are only some of the embodiments of the present invention and are not exhaustive of all embodiments. And embodiments of the invention and features of the embodiments may be combined with each other without conflict.
Fig. 1 schematically shows a double-section helical debris removal tool according to an embodiment of the invention comprising a body 1. The main body 1 is of a cylindrical (including hollow cylindrical) structure, the upper part of the main body is connected with a drill collar, and the lower part of the main body is connected with a drill bit. A plurality of spiral racks 2 are arranged on the outer wall of the main body 1, the spiral racks 2 are spiral protruding mechanisms, and spiral grooves 25 are formed between the spiral racks 2.
The spiral rack 2 is divided into two sections, namely a first spiral rack section 21 and a second spiral rack section 22, the pitch of the first spiral rack section 21 relative to the pitch of the second spiral rack section 22 is locked to be large, and the pitch of the second spiral rack section 22 relative to the first spiral rack section 21 is small.
In the double-section spiral rock debris removal tool according to the present embodiment, the first spiral rack section 21 has a large pitch and a sharp section, so that the removal performance of rock debris is poor, and the main purpose is to grind large rock debris, move the rock debris to the second spiral rack section 22, and the second spiral rack section 2 has a small pitch and a smooth section, so that when the rock debris moves to the position, the flow rate of drilling fluid is increased, the spiral flow field in the annulus is enhanced, and the removal capability of the rock debris is strong; compared with the traditional single-section spiral structure, the cleaning effect is better.
In one embodiment, as shown in fig. 1 and 2, the helical rack 2 is provided with a plurality of cutting teeth. The cutting teeth are columnar tool bits or tooth heads and are uniformly arranged on the spiral rack 2. Preferably, the cutting teeth are provided in the middle of the outside of the helical rack 2.
In a preferred embodiment, the cutting teeth are alloy teeth 23, the alloy teeth 23 being more wear resistant and stronger. The alloy teeth 23 are divided into a plurality of types according to the diameter, and the alloy teeth 23 are regularly arranged according to the order of the diameter. For example, as shown in FIG. 2, the alloy teeth 23 include three types, large, medium, and small, with diameters between 0.7cm and 1.3 cm. The alloy teeth 23 are arranged into a group in the order of large, medium and small, and a plurality of groups of alloy teeth 23 are uniformly arranged on the spiral rack 2.
In one embodiment, as shown in fig. 3 and 4, the first helical rack section 21 is disposed obliquely in the radial direction of the main body 1, and the edge thereof is sharper than the edge of the second helical rack section 22, and the edge of the cross section of the first helical rack section 21 forms a helical pointed blade 24.
In the double-section spiral rock debris removal tool according to the present embodiment, the first spiral rack section 21 has poor removal performance of rock debris due to a large pitch and a sharp cross section, which is advantageous for grinding large rock debris. The spiral grooves 25 between the first spiral rack segments 21 can be used for moving rock fragments, the rock fragments are moved to the second spiral rack segments 22, the flow speed of drilling fluid is increased, and the removal capacity of the rock fragments is improved.
In one embodiment, the number of the helical racks 2 is three, and the helical racks are uniformly arranged in the circumferential direction of the main body 1. The helical racks 2 are uniformly arranged along 120 degrees in the circumferential direction of the main body 1. The three groups of bolt racks not only can ensure that the spiral rack 2 is uniform in the circumferential direction, but also can ensure that the strength of the spiral rack 2 meets the requirements and the size of the spiral groove 25 is in a proper size.
In a preferred embodiment, the ratio of the length of the first helical rack segment 21 to the length of the second helical rack segment 22 is 1.7:1.
in one embodiment, the upper end of the main body 1 is provided with an upper joint 11 for connecting drill collars, and the upper joint 11 is provided with external threads 13.
The lower end of the main body 1 is provided with a lower joint 12 for connecting a drill bit, and the lower joint 12 is provided with an internal thread 14.
The upper joint 11 and the lower joint 12 are used for connecting the drill collar and the drill bit, and are connected firmly in a threaded connection mode, and are convenient to assemble and disassemble. In this embodiment, the helical direction of the thread is opposite to the direction of rotation of the drill bit.
In one embodiment, the width of the first helical rack segment 21 is greater than the width of the second helical rack segment 22. To accommodate the transition of the first helical rack segment 21 to the second helical rack segment 22 with reduced pitch and avoid the problem of plugging of the helical groove 25 due to too small pitch.
In one embodiment, the spiral rack 2 and the spiral groove 25 are both arranged in a clockwise rotation mode, so that a spiral flow field is formed in the annular space, and the flow of rock debris is facilitated.
The device is arranged between the drill collar and the drill bit, the device rotates along with the drill rod, when drilling fluid flows into the first spiral rack section 21, a spiral flow field is formed along with the drilling fluid, the carrying capacity of rock fragments is increased, and meanwhile, the spiral sharp knife 24 and the alloy teeth 23 arranged on the first spiral rack section 21 can play roles in breaking rock and grinding large rock fragments. The first helical rack segment 21 mainly serves to grind and move rock debris. As drilling fluid flows to the second helical rack segment 22, the annular helical flow field changes and the drilling fluid flow rate increases due to the sudden decrease in pitch, and cuttings are quickly removed in the second helical rack segment 22. The second helical rack segment 22 primarily serves to remove cuttings.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiment and all alterations and/or modifications that fall within the scope of the invention, and that are intended to be included within the scope of the invention.
Claims (10)
1. A dual-segment spiral cuttings removal tool, comprising:
a cylindrical main body (1);
a plurality of spiral racks (2) arranged on the outer wall of the main body (1), wherein the spiral racks (2) are spiral convex mechanisms, and spiral grooves (25) are formed between the spiral racks (2);
the spiral rack (2) is divided into two sections, namely a first spiral rack section (21) and a second spiral rack section (22), the spiral pitch of the first spiral rack section (21) relative to the second spiral rack section (22) is locked to be large, and the spiral pitch of the second spiral rack section (22) relative to the first spiral rack section (21) is small.
2. A double-section spiral rock debris removal tool according to claim 1, wherein a number of cutting teeth are provided on the spiral rack (2).
3. The double-section spiral rock debris removal tool according to claim 2, wherein the cutting teeth are alloy teeth (23), the alloy teeth (23) are divided into a plurality of types according to the diameter sizes, and the alloy teeth (23) are regularly arranged according to the order of the diameters.
4. A double-section helical debris removal tool according to any of claims 1 to 3, wherein the edges of the first helical rack section (21) are sharper than the edges of the second helical rack section (22), the cross-sectional edges of the first helical rack section (21) forming helical spikes (24).
5. A double-section helical debris removal tool according to claim 4, wherein the number of helical racks (2) is three, evenly arranged in the circumferential direction of the body (1).
6. The double-section helical debris removal tool of claim 5, wherein the ratio of the length of the first helical rack section (21) to the length of the second helical rack section (22) is 1.7:1.
7. the double-section spiral rock debris removal tool according to claim 6, wherein an upper end of the main body (1) is provided with an upper joint (11) for connecting a drill collar, and the upper joint (11) is provided with external threads (13).
8. A double-section spiral cuttings removal tool according to claim 7, wherein the lower end of the body (1) is provided with a lower joint (12) for connection to a drill bit, the lower joint (12) being provided with internal threads (14).
9. A double-section helical debris removal tool according to claim 8, wherein the width of the first helical rack section (21) is greater than the width of the second helical rack section (22).
10. A double-section helical debris removal tool according to claim 9, wherein the helical rack (2) and helical groove (25) are both arranged in a clockwise rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210708511.3A CN117307063A (en) | 2022-06-22 | 2022-06-22 | Double-section spiral rock debris removing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210708511.3A CN117307063A (en) | 2022-06-22 | 2022-06-22 | Double-section spiral rock debris removing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117307063A true CN117307063A (en) | 2023-12-29 |
Family
ID=89248587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210708511.3A Pending CN117307063A (en) | 2022-06-22 | 2022-06-22 | Double-section spiral rock debris removing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117307063A (en) |
-
2022
- 2022-06-22 CN CN202210708511.3A patent/CN117307063A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108661565B (en) | Multi-ridge diamond compact | |
| US9512696B2 (en) | Non-rotating wellbore casing scraper | |
| CN104956026B (en) | Earth-boring tools with improved cutting members angle of heel arrangement | |
| US10309156B2 (en) | Cutting structures for fixed cutter drill bit and other downhole cutting tools | |
| WO2017087920A1 (en) | Fixed cutter bits and other downhole tools having non-planar cutting elements thereon | |
| WO2014121748A1 (en) | Composite drill bit provided with disc-type cutting structure on cutter blade | |
| CN102691477A (en) | Rock debris cleaning device for drilling tool | |
| CN108915615B (en) | A kind of auxiliary improves the drilling rod of Annular Cuttings degree of sorting | |
| CN1028733C (en) | Drill bit for producing cylindrical drilled holes | |
| CN104675346B (en) | Split vane fluid power-Magnetic drive borehole cleaning tool | |
| CN112761558B (en) | Annular space acceleration rate swirler for vertical shaft | |
| CN117307063A (en) | Double-section spiral rock debris removing tool | |
| CN210622732U (en) | Guide shoe device for running casing | |
| CN117365307A (en) | Forward and reverse PDC drill bit | |
| CN205876270U (en) | All slips formula sleeve pipe scrapers of wholecircle | |
| CN209145524U (en) | A kind of micro- reaming hole sand cleaning tool of drilling well | |
| CA2630615C (en) | Cleaning tool for a pipe | |
| CN209838305U (en) | Drill bit for drilling deep hard stratum at ultrahigh rotating speed | |
| CN111894470B (en) | PDC drill bit, method for determining spiral angle of chip groove of PDC drill bit and well drilling method | |
| CN203783506U (en) | Cylindrical-tooth milling shoe used for milling of composite bridge plug | |
| CN208718587U (en) | A kind of efficient cutting bed cleanout tool | |
| CN204476280U (en) | A kind of Double Circular Bit | |
| CN103967427A (en) | Drilling device with function of decreasing axial friction | |
| CN203050542U (en) | Drill rod with low friction | |
| RU204556U1 (en) | Milling cutter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |