CN118257503A - Eye-marking tool suitable for well wall denudation and collapse block falling - Google Patents
Eye-marking tool suitable for well wall denudation and collapse block falling Download PDFInfo
- Publication number
- CN118257503A CN118257503A CN202211685296.6A CN202211685296A CN118257503A CN 118257503 A CN118257503 A CN 118257503A CN 202211685296 A CN202211685296 A CN 202211685296A CN 118257503 A CN118257503 A CN 118257503A
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- China
- Prior art keywords
- tool
- tool body
- collapse
- blades
- reaming
- 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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- 239000007788 liquid Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 10
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 9
- 239000000956 alloy Substances 0.000 claims abstract description 9
- 229910001182 Mo alloy Inorganic materials 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- 230000003628 erosive effect Effects 0.000 claims description 9
- 229910003460 diamond Inorganic materials 0.000 claims description 6
- 239000010432 diamond Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000002679 ablation Methods 0.000 abstract description 8
- 238000013461 design Methods 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 22
- 230000000903 blocking effect Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 206010016173 Fall Diseases 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000013138 pruning Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000009991 scouring Methods 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
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
-
- 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
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- 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
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades
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)
Abstract
The invention relates to a reaming tool suitable for well wall ablation and collapse and block falling, which comprises a tool body, wherein the tool body is made of Cr-Mo alloy steel material, and the surface of the tool body is overlaid with hard alloy wear-resistant material; a plurality of blades are formed on the side wall of the tool body, cutting elements are arranged at the lower parts of the blades, a flow channel is formed between the adjacent blades, a nozzle is arranged on the tool body, and the flow channel is communicated with a liquid passing channel in the tool body through the nozzle; the reaming tool suitable for well wall ablation and collapse block falling has simple and reasonable structural design, can effectively crush underground block falling, and reduces underground complex risks.
Description
Technical Field
The invention belongs to the technical field of petroleum drilling, geological exploration and oilfield development drilling tools, and particularly relates to a reaming tool suitable for well wall denudation, collapse and block falling.
Background
When a coal seam or a fracture zone or a broken zone with severe interaction and abnormal pressure is drilled in the drilling process, a well wall is easy to be unstable to cause collapse and block falling, the block falling can be accumulated at an enlarged position of a well hole, namely a large belly well hole, and cannot be normally and circularly discharged, when a centralizer or a drill bit passes through, the block falling can be deposited at the position to cause the rising of pumping pressure and the increasing of torque, namely the phenomenon of pump blocking and top driving blocking, and well collapse and drilling clamping accidents are caused in severe cases, so that the drilling cost is increased.
At present, two methods for solving the complex underground problems are generally adopted, the first method is to add an underground anti-seizing tool while drilling into a drilling tool assembly, the anti-seizing tool has the main functions of repairing a well wall in drilling and keeping the well wall smooth, the reaming structure of the anti-seizing tool consists of diamond composite sheets and pointed cone teeth at slopes on two sides of a righting rib, and only a small amount of falling blocks in a shaft can be extruded and broken, so that the shaft cannot be thoroughly cleaned; the second is that after the drill is started, the roller bit is used for pigging, the working characteristics of the roller bit are the rolling rotation of the roller bit and the revolution action of the drilling tool, which are beneficial to repairing the well wall and keeping the well hole unblocked, and the defects are that: firstly, the roller bit has no reaming function and can only repair the well wall; secondly, the inclination angle of the drill bit nozzle has the characteristic that secondary collapse can be caused to the well wall scouring; thirdly, the drill bit has short service time and risk of falling down the bit leg.
Disclosure of Invention
The invention solves the technical problems by adopting the following technical scheme:
The reaming tool suitable for well wall ablation and collapse and block dropping comprises a tool body, wherein the tool body is made of Cr-Mo alloy steel material, and a hard alloy wear-resistant material is deposited on the surface of the tool body in a overlaying manner;
The tool comprises a tool body, wherein a plurality of blades are formed on the side wall of the tool body, cutting elements are arranged at the lower parts of the blades, a flow passage is formed between every two adjacent blades, a nozzle is arranged on the tool body, and the flow passage is communicated with a liquid passing passage inside the tool body through the nozzle.
Further, the top of the tool body forms an arc-shaped crown, and one end of the blade is connected with the crown and is in smooth transition.
Further, the cutting element is a polycrystalline diamond compact or a wear resistant cemented carbide compact.
Further, a plurality of cutting elements are arranged on the blades and staggered on the blades.
Further, the installation angle of the nozzle is parallel to the central line or the liquid outlet is arranged towards the central line.
Further, the blades are connected with each other, so that the cross section of the flow channel between the adjacent blades is parabolic.
Further, the included angle between the blades is 60-120 degrees.
Further, the cross section of the crown of the tool body is in a smooth circular arc shape, and the radian is 90-120 degrees.
Further, the tool comprises a connector, wherein the connector is connected with one end of the tool body, and a liquid passing channel is axially formed between the connector and the interior of the tool body.
The invention has the advantages and positive effects that:
The reaming tool suitable for well wall ablation and collapse block falling has simple and reasonable structural design, can effectively crush underground block falling, and reduces underground complex risks.
Drawings
The technical solution of the present invention will be described in further detail below with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for the purpose of illustration only and thus are not limiting the scope of the present invention. Moreover, unless specifically indicated otherwise, the drawings are intended to conceptually illustrate the structural configurations described herein and are not necessarily drawn to scale.
FIG. 1 is a cross-sectional view of a structure of an reaming tool adapted for borehole wall erosion and collapse/chipping in accordance with one embodiment of the present invention;
Fig. 2 is a top view of a structure of an reaming tool suitable for borehole wall ablation and collapse of a block according to an embodiment of the present invention.
Detailed Description
First, it should be noted that the following detailed description of the specific structure, characteristics, advantages, and the like of the present invention will be given by way of example, however, all descriptions are merely illustrative, and should not be construed as limiting the present invention in any way. Furthermore, any single feature described or implied in the embodiments mentioned herein, or any single feature shown or implied in the figures, may nevertheless be continued in any combination or pruning between these features (or equivalents thereof) to obtain still further embodiments of the invention that may not be directly mentioned herein. In addition, for the sake of simplicity of the drawing, identical or similar features may be indicated at one point in the same drawing.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
As shown in fig. 1 and 2, the reaming tool suitable for borehole wall ablation and collapse and block dropping provided in this embodiment includes a tool body, wherein the tool body is made of Cr-Mo alloy steel material, and a hard alloy wear-resistant material is deposited on the surface of the tool body;
the tool comprises a tool body, wherein a plurality of blades are formed on the side wall of the tool body, cutting elements are arranged at the lower parts of the blades, a flow passage is formed between every two adjacent blades, a nozzle 2 is arranged on the tool body, and the flow passage is communicated with a liquid passing passage inside the tool body through the nozzle.
Specifically, the top of the tool body forms an arc-shaped crown, and one end of the blade is connected with the crown and is in smooth transition; the cutting element is a polycrystalline diamond compact or a wear-resistant hard alloy compact; the plurality of cutting elements on the blades are staggered; the installation angle of the nozzle is parallel to the central line or the liquid outlet is arranged towards the central line; the blades are connected with each other, so that the cross section of a flow channel between the adjacent blades is parabolic; the included angle between the blades is 60-120 degrees; the cross section of the crown of the tool body is in a smooth circular arc shape, and the radian is 90-120 degrees.
The tool also comprises a connector, wherein the connector is connected with one end of the tool body, and a liquid passing channel 7 is axially formed between the connector and the interior of the tool body.
The reaming tool suitable for well wall ablation and collapse and block falling is characterized in that the tool body is made of Cr-Mo alloy steel, the surface is hardened, and hard alloy wear-resistant materials are deposited; the front end of the tool is provided with a crown part 3, the crown part of the tool body is connected with 4 blades 1, the included angle between the blades is 60-120 degrees, cutting elements 4 composed of polycrystalline diamond composite sheets or hard alloy wear-resistant materials are arranged below each blade, a flow passage 5 is arranged between the blades, a joint 6 is connected below the tool, the maximum outer diameter phi A of the tool is closely related to the size of a borehole, the using effect of the tool can be directly influenced, the tool is designed into undersize characteristics, and the borehole size and the maximum outer diameter of the tool are compared with each other as shown in a table 1.
TABLE 1 wellbore size and tool maximum outer diameter comparison table
| Sequence number | Conventional wellbore size (in) | Metric conversion unit (mm) | Maximum outer diameter of tool ΦA (mm) |
| 1 | 6" | 152.4 | 148 |
| 2 | 6 1/2" | 165.1 | 161 |
| 3 | 8 1/2" | 215.9 | 211 |
| 4 | 9 1/2" | 241.3 | 236 |
| 5 | 12 1/4" | 311.2 | 306 |
| 6 | 13 1/8" | 333.4 | 327 |
| 7 | 17 1/2" | 444.5 | 438 |
The crown part of the reaming tool suitable for borehole wall ablation and collapse block is in a smooth circular arc shape, so that the function of a collar is mainly exerted, the tool is ensured to smoothly enter the bottom of a well through a collapse well section, cutting elements composed of polycrystalline diamond composite sheets or wear-resistant hard alloy which are arranged in a staggered manner are arranged at the lower parts of blades, and the downhole block can be repeatedly cut, extruded and crushed to form small rock fragments to be safely transported to the ground; the tool is provided with the nozzle, the angle of the nozzle is parallel to or inward of the central line, so that the secondary flushing and damage of drilling fluid to the well wall are avoided, and the well wall is kept stable; the flow passage of the tool is parabolic in section, so that the migration and discharge of rock debris are facilitated; when the underground complex conditions such as pump blocking, top driving blocking, drilling and blocking occur in the drilling process, the drilling tool is safely started, then the new drilling tool is combined to drill, the well bore is thoroughly cleaned, the new drilling tool is started after cleaning, and finally the normal drilling tool is started to drill.
Recommending a drilling tool combination: this patent reaming instrument + check valve + drill collar + drilling rod.
It should be noted that, when using the tool for reaming this patent, related technical measures are needed to be taken and implemented together to achieve the best use effect, and the technical measures include, but are not limited to, the following: firstly, the viscosity and the density of the drilling fluid are improved so as to improve the carrying and suspending capacity of the drilling fluid; secondly, the filter loss is reduced, the quality of a filter cake is improved, and the stability of a well wall is improved; thirdly, blending an anti-collapse agent, and enhancing the wall forming performance and plugging capability of the drilling fluid; fourthly, grouting is performed in time in tripping, so that the height of drilling fluid is ensured, and the stratum pressure is balanced.
The foregoing examples illustrate the invention in detail, but are merely preferred embodiments of the invention and are not to be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (9)
1. The utility model provides a marking tool suitable for well wall denudation, collapse and fall piece which characterized in that: the tool comprises a tool body, wherein the tool body is made of Cr-Mo alloy steel material, and a hard alloy wear-resistant material is deposited on the surface of the tool body;
The tool comprises a tool body, wherein a plurality of blades are formed on the side wall of the tool body, cutting elements are arranged at the lower parts of the blades, a flow passage is formed between every two adjacent blades, a nozzle is arranged on the tool body, and the flow passage is communicated with a liquid passing passage inside the tool body through the nozzle.
2. A reaming tool for borehole wall erosion and collapse as claimed in claim 1, wherein: the top of the tool body forms an arc-shaped crown, and one end of the blade is connected with the crown and is in smooth transition.
3. A reaming tool for borehole wall erosion and collapse as claimed in claim 1, wherein: the cutting element is a polycrystalline diamond compact or a wear-resistant hard alloy compact.
4. A reaming tool for borehole wall erosion and collapse as claimed in claim 1, wherein: the installation angle of the nozzle is parallel to the central line or the liquid outlet is arranged towards the central line.
5. A reaming tool for borehole wall erosion and collapse as claimed in claim 1, wherein: the number of the cutting elements on the blades is several, and the cutting elements are staggered on the blades.
6. A reaming tool for borehole wall erosion and collapse as claimed in claim 1, wherein: the blades are connected with each other so that the cross section of the flow channel between the adjacent blades is parabolic.
7. A reaming tool for borehole wall erosion and collapse as claimed in claim 1, wherein: the included angle between the blades is 60-120 degrees.
8. A reaming tool for borehole wall erosion and collapse as claimed in claim 1, wherein: the cross section of the crown of the tool body is in a smooth circular arc shape, and the radian is 90-120 degrees.
9. A reaming tool for borehole wall erosion and collapse as claimed in claim 1, wherein: the tool comprises a tool body, and is characterized by further comprising a connector, wherein the connector is connected with one end of the tool body, and a liquid passing channel is axially formed between the connector and the interior of the tool body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211685296.6A CN118257503A (en) | 2022-12-27 | 2022-12-27 | Eye-marking tool suitable for well wall denudation and collapse block falling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211685296.6A CN118257503A (en) | 2022-12-27 | 2022-12-27 | Eye-marking tool suitable for well wall denudation and collapse block falling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118257503A true CN118257503A (en) | 2024-06-28 |
Family
ID=91605785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211685296.6A Pending CN118257503A (en) | 2022-12-27 | 2022-12-27 | Eye-marking tool suitable for well wall denudation and collapse block falling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118257503A (en) |
-
2022
- 2022-12-27 CN CN202211685296.6A patent/CN118257503A/en active Pending
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