CN220365519U - Multistage pore wall trimming device suitable for sand shale stratum - Google Patents
Multistage pore wall trimming device suitable for sand shale stratum Download PDFInfo
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- CN220365519U CN220365519U CN202322157417.6U CN202322157417U CN220365519U CN 220365519 U CN220365519 U CN 220365519U CN 202322157417 U CN202322157417 U CN 202322157417U CN 220365519 U CN220365519 U CN 220365519U
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- cutting
- steel body
- drilling
- wings
- sand shale
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- 239000004576 sand Substances 0.000 title claims abstract description 23
- 238000009966 trimming Methods 0.000 title claims abstract description 12
- 239000011148 porous material Substances 0.000 title claims description 8
- 238000005520 cutting process Methods 0.000 claims abstract description 53
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 30
- 239000010959 steel Substances 0.000 claims abstract description 30
- 230000036346 tooth eruption Effects 0.000 claims abstract description 22
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 230000003750 conditioning effect Effects 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 5
- 229910003460 diamond Inorganic materials 0.000 claims description 5
- 239000010432 diamond Substances 0.000 claims description 5
- 238000005553 drilling Methods 0.000 abstract description 34
- 239000012530 fluid Substances 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a multistage hole wall trimming device suitable for a mud sandstone stratum, which relates to the technical field of drilling tools and adopts the technical scheme that: the trimming device comprises a device steel body, wherein the device steel body is a hollow cylinder, and two ends of the device steel body are respectively provided with internal threads and external threads which are matched with each other so as to realize multistage assembly of the trimming device; a plurality of cutting wings are obliquely arranged on the outer side wall of the steel body of the device at equal arc length intervals; a plurality of cutting tooth grooves are arranged on the inclined planes of the plurality of cutting wings along the length direction of the inclined planes; and cutting teeth parallel to the inclined planes of the cutting wings are arranged in the plurality of cutting tooth grooves. The device is four-wing inclined cutting tooth structure, has solved current drilling tool at the in-process drilling fluid circulation of drilling sand shale stratum unsmooth, easy emergence drilling slope, causes the problem that the footage is slow, drilling pore-forming quality reduces, drilling skew and easy emergence hole accident etc. are unfavorable for actual production, and the device simple structure, the processing degree of difficulty is low, is favorable to improving the economic benefits in the drilling production.
Description
Technical Field
The utility model relates to the technical field of drilling tools, in particular to a multistage hole wall trimming device suitable for a sand shale stratum.
Background
In drilling construction such as mine site census, geological survey and the like, sand-contacting mudstone strata are often drilled. Because the lithology of the sandstone stratum is frequently changed and the stratum is frequently laminated with each other, if a certain technical means is not adopted, the conditions of drilling deflection, poor hole wall quality and the like are extremely easy to occur, and the hole forming quality is seriously reduced. In addition, in the drilling process of the sand shale stratum, the problems of excessive formation of mud and sand, rapid change of drilling fluid and the like exist, and the common centralizing device at present often has the problems of narrow waterway structure, poor cutting capability on the hole wall and the like, and is only suitable for the stratum with higher hardness. Therefore, in order to solve the above problems, it is necessary to provide a hole wall dressing device suitable for sand shale and the interbedded strata thereof.
Disclosure of Invention
The utility model aims to provide a multistage hole wall trimming device suitable for a sand shale stratum, which is of a four-wing inclined cutting tooth structure, solves the problems that the drilling fluid circulation is unsmooth and the drilling inclination is easy to occur in the process of drilling the sand shale stratum, so that the footage is slow, the drilling hole quality is reduced, the drilling hole is inclined, the accidents in the holes are easy to occur and the like, and is unfavorable for actual production.
The technical aim of the utility model is realized by the following technical scheme: the utility model provides a multistage pore wall trimming device suitable for mud sandstone stratum, includes the device steel body, the device steel body is the cavity cylinder, the both ends of device steel body are equipped with internal thread and external screw thread that match each other respectively in order to realize the multistage assembly of trimming device; a plurality of cutting wings are obliquely arranged on the outer side wall of the steel body of the device at equal arc length intervals; a plurality of cutting tooth grooves are arranged on the inclined planes of the plurality of cutting wings along the length direction of the inclined planes; cutting teeth parallel to the inclined planes of the cutting wings are arranged in the plurality of cutting tooth grooves; an auger-shaped outer water tank is formed between two adjacent cutting wings and cutting teeth, and undercut cutting teeth parallel to the bottom surfaces of the cutting wings are arranged at the bottoms of the cutting wings.
The utility model is further provided with: an upper gage strip and a lower gage strip are arranged on the outer side wall of the cutting wing in a staggered mode, and the bottom surface of the upper gage strip and the top surface of the lower gage strip are located on the same horizontal plane.
The utility model is further provided with: an inner step larger than the inner diameter of the device steel body is further arranged in the end part of the device steel body, and the distance between the top surface of the cutting wing and the top surface of the device steel body is alpha/2.
The utility model is further provided with: the cutting teeth, the upper gage strips, the lower gage strips and the undercut cutting teeth are all made of diamond composite sheets.
In summary, the beneficial effects of the utility model are as follows: the device is applicable to sand shale stratum and drills, has improved the life of device, has increased waterway structure degree of depth, has strengthened the cutting ability to stratum and has right the effect, and auger shape waterway structure can assist drilling fluid circulation, avoids silt to pile up the hole bottom. In the process of drilling the sand shale stratum, the drilling quality can be improved, the footage is accelerated, the inclination of the hole is prevented, the drilling fluid circulation is facilitated, meanwhile, the structure is easy to process, the drilling construction work efficiency can be greatly improved, and the drilling cost can be saved.
Drawings
FIG. 1 is an isometric view of a multi-stage borehole wall conditioning apparatus for use in a sand shale formation in accordance with an embodiment of the present utility model;
FIG. 2 is a front view of a multi-stage borehole wall conditioning apparatus for use in a sand shale formation in accordance with an embodiment of the present utility model;
FIG. 3 is a side view of a multi-stage borehole wall conditioning apparatus for use in a sand shale formation in accordance with an embodiment of the present utility model;
FIG. 4 is a cross-sectional view at A-A in FIG. 3;
FIG. 5 is a top cross-sectional view of a multi-stage hole wall conditioning apparatus for use in a sand shale formation in accordance with an embodiment of the present utility model;
FIG. 6 is a front view of a multi-stage assembly of a multi-stage hole wall conditioning apparatus for use in a sand shale formation in accordance with an embodiment of the present utility model;
fig. 7 is a top view of a multi-stage assembly of a multi-stage hole wall conditioning apparatus suitable for use in a sand shale formation in accordance with an embodiment of the present utility model.
In the figure: 1. a device steel body; 2. cutting wings; 3. cutting teeth; 4. an outer water tank; 5. a gauge strip is arranged on the upper surface; 6. a lower gage strip; 7. bottom cutting teeth; 8. an inner step; 9. an internal thread; 10. an external thread; 11. cutting tooth slots.
Detailed Description
The utility model is described in further detail below with reference to fig. 1-7.
Examples: the utility model provides a multistage pore wall trimming device suitable for sand shale, includes device steel body 1, and device steel body 1 is the both ends intercommunication, middle hollow cylinder structure, and this embodiment is preferred, and four wing cutting wings 2 are fixed connection all around at device steel body 1 outer wall; the rear side of the cutting wing 2 is provided with a torque-resistant rear lining, the front side of the cutting wing 2 is provided with cutting tooth grooves 11 which are obliquely arranged, and cutting teeth 3 are arranged in the cutting tooth grooves 11; the tooth surfaces of the cutting teeth 3 are arranged obliquely upwards, and the cutting teeth 3 are made of diamond composite sheets; an outer water tank 4 is formed between two adjacent cutting wings 2 and cutting teeth 3 on the outer wall of the steel body 1; the outside of the cutting wing 2 is provided with a gage strip which is divided into an upper gage strip 5 and a lower gage strip 6, and the gage strip is made of diamond composite sheets; the bottom of the cutting wing 2 is provided with bottom cutting teeth 7, and the bottom cutting teeth 7 are made of diamond composite sheets. The device steel body 1 both ends are provided with internal thread 9, external screw thread 10 and interior step 8, and the device passes through interior step 8 through internal thread 9 and external screw thread 10 and realizes multistage assembly.
As shown in fig. 5, the equal arc length intervals of the four-wing cutting wings 2 are distributed on the outer wall of the cylinder of the device steel body 1, and good support on the well wall is realized through the outer surface of the wider cutting wings 2, so that the inclination of drilling holes is effectively avoided.
As shown in fig. 1-3, the cutting teeth 3 are arranged parallel to the cutting tooth grooves 11 and are obliquely arranged along the cylindrical surface of the steel body 1 of the device, and the deep external water grooves 4 which are obliquely arranged are formed in an auxiliary mode, so that the drilling fluid flow is sufficient, and mud and sand blockage are not easy to occur. The arrangement length of the cutting teeth 3 is prolonged, good finishing of the well wall can be realized, and the pore-forming quality is optimized.
As shown in fig. 1-3, the outer water tank 4 is distributed obliquely along the cylindrical surface of the steel body, and is matched with an auger-shaped structure formed by the front end surface of the cutting wing 2 and the cutting teeth 3, and applies oblique upward thrust to the drilling fluid along with rotation of the device so as to accelerate the drilling fluid to return to the ground surface.
As shown in fig. 6, the fixed distance between the top surface of the cutting wing 2 and the top surface of the steel body 1 of the device is alpha/2, and the distance alpha is formed between two adjacent stages in the multistage assembly process of the device, so that even if the staggered assembly caused by the machining precision and the like occurs, the drilling fluid can still circulate from the fixed distance, and the blockage of waterways is avoided.
As shown in fig. 2 and 3, the bottom surface of the upper gauge strip 5 and the top surface of the lower gauge strip 6 are in the same plane, so that the gauge structure covers the whole cutting wing 2 longitudinally, and the service life of the device is ensured.
As shown in fig. 5 and 7, the arc length of the inner side of the top surface of the cutting wing 2 is completely equal to the arc length of the inner side of the bottom surface of the cutting wing 2, so that the device realizes multistage assembly, and the upper stage and the lower stage realize complete assembly during assembly, thereby forming a continuous cutting tooth 3 and a waterway structure. When drilling in the sand-mud rock interbed frequent stratum, multistage assembly of the device can effectively strengthen the effects of preventing hole inclination and assisting drilling fluid circulation in the drilling process.
As shown in fig. 1 and 2, a space is formed between the bottom surface of the cutting tooth 3 and the outer wall of the cylinder of the device steel body 1, so that the drilling fluid can fully wash and cool the cutting tooth 3.
As shown in fig. 2, the bottom surface of the undercut tooth 7 is parallel to the bottom surface of the cutting wing 2, so that the bottom end of the cutting wing 2 has enough cutting capability and excessive abrasion of the steel body 1 of the device is avoided during drilling.
The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.
Claims (4)
1. Multistage pore wall trimming device suitable for sand shale stratum, including device steel body (1), characterized by: the device steel body (1) is a hollow cylinder, and two ends of the device steel body (1) are respectively provided with an internal thread (9) and an external thread (10) which are matched with each other so as to realize multistage assembly of the trimming device; a plurality of cutting wings (2) are obliquely arranged on the outer side wall of the steel body (1) at equal arc length intervals; a plurality of cutting tooth grooves (11) are arranged on the inclined planes of the plurality of cutting wings (2) along the length direction; cutting teeth (3) parallel to the inclined planes of the cutting wings (2) are arranged in the plurality of cutting tooth grooves (11); an auger-shaped outer water tank (4) is formed between two adjacent cutting wings (2) and cutting teeth (3), and undercut cutting teeth (7) parallel to the bottom surfaces of the cutting wings are arranged at the bottoms of the plurality of cutting wings (2).
2. A multi-stage pore wall conditioning apparatus for use in a sand shale formation as claimed in claim 1, wherein: an upper gage strip (5) and a lower gage strip (6) are arranged on the outer side wall of the cutting wing (2) in a staggered mode, and the bottom surface of the upper gage strip (5) and the top surface of the lower gage strip (6) are located on the same horizontal plane.
3. A multi-stage pore wall conditioning apparatus for use in a sand shale formation as claimed in claim 1, wherein: an inner step (8) larger than the inner diameter of the device steel body (1) is further arranged in the end part of the device steel body (1), and the distance between the top surface of the cutting wing (2) and the top surface of the device steel body (1) is alpha/2.
4. A multi-stage pore wall conditioning apparatus for use in a sand shale formation as claimed in claim 1, wherein: the cutting teeth (3), the upper gage strips (5), the lower gage strips (6) and the undercut cutting teeth (7) are all made of diamond composite sheets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322157417.6U CN220365519U (en) | 2023-08-11 | 2023-08-11 | Multistage pore wall trimming device suitable for sand shale stratum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322157417.6U CN220365519U (en) | 2023-08-11 | 2023-08-11 | Multistage pore wall trimming device suitable for sand shale stratum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220365519U true CN220365519U (en) | 2024-01-19 |
Family
ID=89519890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322157417.6U Active CN220365519U (en) | 2023-08-11 | 2023-08-11 | Multistage pore wall trimming device suitable for sand shale stratum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220365519U (en) |
-
2023
- 2023-08-11 CN CN202322157417.6U patent/CN220365519U/en active Active
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