CN219993624U - Injection-sweeping cement plug integrated drill bit for oilfield drilling and workover operation - Google Patents
Injection-sweeping cement plug integrated drill bit for oilfield drilling and workover operation Download PDFInfo
- Publication number
- CN219993624U CN219993624U CN202321086453.1U CN202321086453U CN219993624U CN 219993624 U CN219993624 U CN 219993624U CN 202321086453 U CN202321086453 U CN 202321086453U CN 219993624 U CN219993624 U CN 219993624U
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- drill bit
- sweeping
- bit body
- cement
- drilling
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- 239000004568 cement Substances 0.000 title claims abstract description 63
- 238000005553 drilling Methods 0.000 title claims abstract description 32
- 238000010408 sweeping Methods 0.000 title claims abstract description 17
- 238000002347 injection Methods 0.000 claims abstract description 18
- 239000007924 injection Substances 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims description 8
- 239000000956 alloy Substances 0.000 abstract description 10
- 238000001125 extrusion Methods 0.000 abstract description 10
- 238000010276 construction Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model relates to an injection-sweeping cement plug integrated drill bit for oilfield drilling and workover operation, which comprises a tubular body, wherein an upper joint is arranged at the upper part of the tubular body, a drill bit body is arranged at the lower part of the tubular body, the bottom end of the drill bit body is arc-shaped, the section of the drill bit body is in a straight shape, the upper end of the drill bit body is designed into a chamfer inclined plane, and hard alloy materials are paved at the bottom end, the side surface and the chamfer inclined plane of the drill bit body. The integral drill bit for the injection and sweeping cement plugs in the oilfield drilling and repairing operation meets the requirements of the extrusion cement plugs and the drilling cement plugs, can finish the operations of extrusion cement plugs and drilling cement plugs in one pass, has good use effect, effectively shortens the construction period, saves the construction cost and greatly meets the current requirements of increasing oil production.
Description
Technical Field
The utility model relates to the field of oilfield drilling and workover operations, in particular to an injection and sweeping cement plug integrated drill bit for oilfield drilling and workover operations.
Background
At present, the operation of temporarily plugging the shaft is divided into temporary plugging of the shaft by a lower tool and temporary plugging of the shaft by an extrusion cement plug, and the operation of plugging the shaft by the extrusion cement plug is a method which is easy to realize on site and mature in technology, and has wide application. After the cement plugs are extruded and plugged temporarily, the cement plugs need to be drilled and swept, and the shaft channels are restored. The conventional method on site is to lift out the string of the extruded cement plug, insert the drilling and sweeping cement plug tool to drill and sweep the cement plug, waste a large amount of operation time on repeated string lifting and descending operations, prolong the operation period, occupy the production time of an oil well, seriously delay the construction time, increase the construction labor intensity of workers, and run against the concept and the goal of green development of enterprises.
Disclosure of Invention
The utility model aims to solve the technical problems of providing the injection and sweeping cement plug integrated drill bit for the oilfield drilling and repairing operation, which can finish the operations of extruding and injecting cement plugs and drilling and sweeping cement plugs in one pass, effectively shortens the construction period, saves the construction cost, reduces the labor intensity and improves the operability of temporary plugging shaft operation.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides an oil field drilling workover is annotated and is swept cement stopper integral type drill bit, includes the tubular body, tubular body upper portion is equipped with the top connection, and tubular body lower part is equipped with the bit body, bit body bottom is the arcuation, and bit body section is "in line" style of calligraphy.
In the scheme, the upper end of the drill bit body is a chamfer inclined plane.
In the scheme, the bevel of the chamfer of the drill bit body is paved with the hard alloy material.
In the scheme, the hard alloy material is laid at the bottom end of the drill bit body.
In the scheme, the side face of the drill bit body is paved with the hard alloy material.
The injection and sweeping cement plug integrated drill bit for the oilfield drilling and workover operation has the following beneficial effects:
1. the bottom end of the bit body is arc-shaped, so that the contact area between the bit body and the cement plug is reduced, hard alloy at the tip of the bit body is easier to eat into the cement plug, and the speed of crushing cement stones by the bit is increased.
2. The section of the bit body is in a straight shape, so that the area of the bit body occupying a water hole is reduced, the bit has a large enough overflow area, and the flowing resistance of cement paste during the extrusion and injection of the cement plug is effectively reduced, thereby ensuring that the pumping pressure and the discharge capacity of the extrusion and injection cement plug meet the design requirements and ensuring that the operation of the extrusion and injection of the cement plug is smoothly carried out.
3. The upper end face of the drill bit body is designed to be a chamfer inclined plane, so that the suction effect generated by squeezing a cement plug pipe column can be effectively reduced, and cement paste is prevented from being blocked up along with upward movement of the drill bit, and the cementing strength of cement stones is prevented from being influenced.
4. The bottom, the side and the upper chamfer inclined surfaces of the drill bit body are paved with the hard alloy materials, the hard alloy materials paved at the bottom are used for eating the cement plugs under the action of the bit pressure, and then the eating parts are rotated to cut in the circumferential direction so as to gradually drill the cement plugs; the cemented carbide material paved on the side surface cleans the cement sheath remained on the inner wall of the sleeve while the drill bit rotates, so that the inner wall of the sleeve is ensured to be clean; when the hard alloy material paved on the chamfer inclined surface at the upper end meets abnormal conditions such as sticking, the cement block stuck on the upper part of the drill bit can be milled through the back reaming operation, so that the occurrence of complex faults is prevented.
Drawings
The utility model will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of the construction of an integral bit for injection and sweep cementing plugs for oilfield drilling and workover operations;
FIG. 2 is an axial cross-sectional view of a cement plug integrated drill bit for oilfield drilling and workover operations of the present utility model;
FIG. 3 is a radial cross-sectional view of an integral cement plug drill bit for oilfield drilling and workover operations of the present utility model;
in the figure: 1-upper joint; 2-a tubular body; 3-a bit body; 4-cemented carbide material.
Detailed Description
For a clearer understanding of technical features, objects and effects of the present utility model, a detailed description of embodiments of the present utility model will be made with reference to the accompanying drawings.
As shown in fig. 1-3, the injection and sweeping cement plug integrated drill bit for oilfield drilling and workover operation comprises a tubular body 2, wherein an upper joint 1 is arranged on the upper part of the tubular body 2, a drill bit body 3 is arranged on the lower part of the tubular body 2, and the outer diameter of the drill bit body 3 is determined by the inner diameter of a construction well Duan Taoguan.
The bottom end of the bit body 3 is arc-shaped, so that the contact area between the bit body 3 and the cement plug is reduced, hard alloy at the tip of the bit body 3 is easier to eat into the cement plug, and the speed of crushing cement stones by the bit is increased.
The cross section of the bit body 3 is in a straight shape, so that the area of the bit body 3 occupying a water hole is reduced, the tubular body 2 has a large enough overflow area, and the flowing resistance of cement paste during the extrusion and injection of the cement plug is effectively reduced, thereby ensuring that the pumping pressure and the discharge capacity of the extrusion and injection cement plug meet the design requirements and ensuring that the operation of the extrusion and injection cement plug is smoothly carried out.
The upper end of the drill bit body 3 is designed into a chamfer inclined plane, so that the suction effect of squeezing a cementing plug pipe column can be effectively reduced, and cement paste is prevented from being unreasonable along with upward movement of the drill bit, and the cementing strength of cement stones is prevented from being influenced.
Cemented carbide materials 4 are paved at the bottom end, the side surface and the chamfer inclined surface of the drill bit body 3, the cemented carbide materials 4 paved at the end are used for biting a cement plug under the action of drilling pressure, and then the bit body is rotated to cut the biting part in the circumferential direction so as to gradually drill the cement plug; the cemented carbide material 4 paved on the side surface cleans cement rings remained on the inner wall of the sleeve when the drill bit rotates, so that the inner wall of the sleeve is ensured to be clean; when the hard alloy material 4 paved on the chamfer inclined surface at the upper end meets abnormal conditions such as sticking, the cement block stuck on the upper part of the drill bit can be milled through the back reaming operation, so that the occurrence of complex faults is prevented.
The application method of the utility model is as follows:
1. selecting a cement plug injection and sweeping integrated drill bit with corresponding size for drilling and repairing operation according to the inner diameter of the sleeve;
2. the drill bit and the 18-degree slope drilling tool are tightened on the ground and are put into the well together;
3. the well section of the cement plug to be extruded is lowered, the cement plug is extruded according to the design, the pipe column is lifted to the safe well section for waiting for solidification, and after waiting for solidification, the pressure test of the cement plug is qualified;
4. deepen the plug surface of the drilling tool, and pressurizing the plug surface when meeting resistance to not more than 10KN;
5. lifting the drilling tool for 2-3m, connecting a kelly bar, starting a pump to wash a well, and starting a turntable and slowly lowering after the well is stable;
6. crushing the drilling and sweeping cement plug at a proper drilling pressure and a proper rotating speed, wherein the drilling pressure is not more than 10kN, the rotating speed is not more than 70r/min, and the discharge capacity is not less than 500L/min;
7. after drilling through the cement plug, flushing the well until the liquid in the inlet and outlet are consistent, wherein the solid phase content in the outlet is less than 0.2%;
8. after the cement plug is drilled and swept, the drilling and workover operation injection and sweeping integrated drill bit is started, and the next construction is carried out according to the design requirement.
The embodiments of the present utility model have been described above with reference to the accompanying drawings, but the present utility model is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present utility model and the scope of the claims, which are to be protected by the present utility model.
Claims (5)
1. The utility model provides an oil field drilling workover is annotated and is swept cement stopper integral type drill bit, its characterized in that includes the tubular body, tubular body upper portion is equipped with the top connection, and tubular body lower part is equipped with the bit body, bit body bottom is the arcuation, and bit body section is "in line" style of calligraphy.
2. The oilfield drilling and workover operation injection and sweeping cement plug integrated drill bit of claim 1, wherein the upper end of the bit body is a chamfer angle.
3. The oilfield drilling and workover operation injection and sweeping cement plug integrated drill bit of claim 1, wherein the bit body chamfer faces are laid with cemented carbide material.
4. The oilfield drilling and workover operation injection and sweeping cement plug integrated drill bit of claim 1, wherein the bottom end of the bit body is paved with a cemented carbide material.
5. The oilfield drilling and workover operation injection and sweeping cement plug integrated drill bit of claim 1, wherein the side surface of the bit body is paved with cemented carbide materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321086453.1U CN219993624U (en) | 2023-05-08 | 2023-05-08 | Injection-sweeping cement plug integrated drill bit for oilfield drilling and workover operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321086453.1U CN219993624U (en) | 2023-05-08 | 2023-05-08 | Injection-sweeping cement plug integrated drill bit for oilfield drilling and workover operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219993624U true CN219993624U (en) | 2023-11-10 |
Family
ID=88611378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321086453.1U Active CN219993624U (en) | 2023-05-08 | 2023-05-08 | Injection-sweeping cement plug integrated drill bit for oilfield drilling and workover operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219993624U (en) |
-
2023
- 2023-05-08 CN CN202321086453.1U patent/CN219993624U/en active Active
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