CN203756035U - Double-top drill bit with drill through display applicable to radial drilling of casing for windowing - Google Patents
Double-top drill bit with drill through display applicable to radial drilling of casing for windowing Download PDFInfo
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- CN203756035U CN203756035U CN201320881765.1U CN201320881765U CN203756035U CN 203756035 U CN203756035 U CN 203756035U CN 201320881765 U CN201320881765 U CN 201320881765U CN 203756035 U CN203756035 U CN 203756035U
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- drill
- drill bit
- cutting edge
- casing
- ring
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Abstract
The utility model relates to a double-top drill bit with drill through display applicable to radial drilling of a casing for windowing. The double-top drill bit comprises a drill bit body and a drill through display ring, wherein the drill through display ring is made of an easily-ground material and is arranged on the root of the drill bit body in a sleeving manner, and the diameter of the drill through display ring is greater than the outer diameter of each cutting edge of the drill bit. When the double-top drill bit is adopted to carry out casing windowing, the wall of the casing is drilled by using the cutting edges on the top of the drill bit, the two cutting edges cooperatively work till boreholes meeting the design requirements are drilled. When a window drilled by the drill bit meets the diameter of the design requirement and certain depth, the drill through display ring contacts the wall of the casing, and the drill bit continues to drill, so that a part, which is greater than the outer diameters of the cutting edges of the drill bit, of the drill through display ring, can be ground off, thus being capable of judging that the windowing is successful. The double-top drill bit is accurate and reliable.
Description
Technical field
The utility model relates to drilling bit field, particularly a kind of in oil, natural gas and oil gas field, coalfield stimulation work, and the band that is applicable to radial bore casing sidetracking drills and shows Double Tops drill bit.
Background technology
Hydraulic jetting radial drilling technology is to utilize special-purpose junk bit that sleeve pipe is drilled, and re-uses high-pressure water jet in different directions and the different depth injection of oil reservoir, thereby gets out the small diameter borehole of a plurality of levels.Can increase length, expansion drainage area, the raising recovery ratio of well in oil reservoir; Can reuse top well section, reduce drilling cost; Can reduce the expenses such as oil well management and environmental protection.Hydraulic jetting radial drilling technology is transformed significant to well production increment, particularly old well production potential tapping.
While utilizing hydraulic jetting radial drilling technology to carry out operation, need first target zone sleeve pipe to be windowed, sleeve pipe is drilled.First by steering gear with under oil pipe to target zone position, grappling, recycling coiled tubing is lowered to motor and junk bit, by steering gear, makes junk bit perpendicular to casing wall, turn on pump starts milling sleeve pipe.After sleeve pipe is drilled, trip out motor and junk bit, use coiled tubing to be lowered to high-pressure hose and nozzle, nozzle by steering gear after, enter smoothly in worn out eyelet, turn on pump, utilizes high-pressure water jet to spray and breaks rock.Meanwhile, what high-pressure hose produced at nozzle travels forward under tractive force effect, when injection well reaches the designing requirement degree of depth, and the end of job.
When hydraulic jetting radial drilling construction operation, it is longer that conventional casing sidetracking junk bit drills the sleeve pipe used time, and efficiency is not high, and prior art is for judging whether that drilling sleeve pipe does not have way intuitively.The conventional pressure of observing changes and change in torque, and then relies on operator's experience to carry out subjective judgement, and accuracy is difficult to determine, operating efficiency is brought to considerable influence.
201220264177.9 have disclosed a kind of hydraulic jetting radial drilling casing sidetracking target drill, and it has installed the indication pin that protrudes from body cylindrical additional on the drill body end face of cylinder, by it, judge whether successfully to window.Adopt this kind of structure, in the process of using coiled tubing to be lowered to, indication pin is easily touched disconnected, causes successfully accurately judging windowing.
Summary of the invention
In order to overcome the deficiency that existing junk bit milling efficiency is not high and casing sidetracking is difficult to intuitive judgment, the utility model provides a kind of band that is applicable to radial bore casing sidetracking to drill demonstration Double Tops drill bit, this drill bit can not only improve the efficiency of casing sidetracking, and can judge intuitively that whether casing sidetracking is successful.
The utility model solves the technical scheme that its technical problem adopts and comprises:
The band that is applicable to radial bore casing sidetracking drills and shows a Double Tops drill bit, on this drill body, has blade; At the root of drill body, be fixed with to drill and show ring, drill and show that ring made by easy removing material, wear and show that the diameter of ring is greater than drill body maximum gauge.
Such scheme further comprises: described drill body is four cutting edge constructions, at each blade top, have one with drill body axis the first cutting edge at an angle.
In described the first cutting edge bottom, also have other the second cutting edge, the angle of cut of the second cutting edge and the first cutting edge is in obtuse angle.
Drill and show that ring and drill body axis are rectangular, drill and show that the diameter of ring is greater than drill bit the second cutting edge external diameter.
Described drilling shows that ring, for aluminum annulus, is sleeved on drill body thread root.
While adopting the utility model to carry out casing sidetracking, first the cutting edge by drill body top carries out the jewel hole to casing wall, due to when casing wall is got out to eyelet and reach certain diameter and the degree of depth after after, another cutting edge under drill body top cutting edge is started working, and the eyelet drilling is expanded.The cutting edge at top is proceeded perforate simultaneously, and two cutting edges carry out cooperating simultaneously, until get out the eyelet that reaches designing requirement.Due to the cutting edge profile at top, compare littlely with general cut drill, thereby there is better centering function, cut more stable.The structure of two cutting edges, compares single cutting-edge, and its stock-removing efficiency is high, and blade is not easy to wear, good reliability.
Secondly when drill body, window and reach after the diameter and certain degree of depth of designing requirement, drill and show loop contacts casing wall, continue to creep into, drill and show that encircling the part that is greater than drill edge external diameter can be worn away, thereby can judge and window successfully.And drill and show that ring is difficult for being lowered to and in process, being touched disconnectedly at coiled tubing, accuracy of judgement is reliable, simple and easy to do; Drill and show that ring is convenient for changing, cost is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of drill bit of the present utility model.
1. drill bodies in figure, 2. drill and show ring, 3. the first cutting edge, 4. the second cutting edge.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
The band that is applicable to radial bore casing sidetracking drills and shows a Double Tops drill bit, comprises drill body invention 1 invention and drill showing the bright 2 invention two parts of environment-development.Drill body invention 1 invention is four cutting edge constructions, at each blade top, there is one to invent the first cutting edge invention 3 inventions at an angle of 1 invention axis with drill body, in the first cutting edge invention 3 invention bottoms, also have the second cutting edge invention 4 inventions, invent in obtuse angle with the first cutting edge invention 3.Drill and show that bright 2 inventions of environment-development are made by easy removing material, can be enclosed within drill body and invent 1 invention thread root, drill that to show that bright 1 invention of environment-development and drill body are invented 2 invention axis rectangular, its diameter is greater than drill edge external diameter.
While adopting the utility model to carry out casing sidetracking, first by first cutting edge invention 3 inventions at drill body invention 1 invention top, carry out the jewel hole to casing wall, when casing wall is got out to eyelet and reach certain diameter and the degree of depth after, the second cutting edge invention 4 inventions under drill body invention 1 invention top the first cutting edge invention 3 inventions are started working, and the eyelet drilling is expanded.The cutting edge at top is proceeded perforate simultaneously, and two cutting edges carry out cooperating simultaneously, until get out the well that reaches designing requirement.
When drill body invention 1 invention, window and reach after the diameter and certain degree of depth of designing requirement, drill and show the bright 2 invention contact sleeve tube walls of environment-development, continue to creep into, drill and show that the part that bright 2 inventions of environment-development are greater than drill edge external diameter can be worn away, thereby can judge and window successfully.
The utility model is not limited in above-described embodiment, for example, angle of cut angle between two cutting edges can be less than between 180 degree arbitrarily and select being greater than 90 degree, drills and shows that ring can be designed as other thickness and diameter, and its installation site can be not limited only to drill body root.Every on the disclosed technical scheme of the utility model basis; those skilled in the art is according to disclosed technology contents; do not need creative work just can technical characterictic wherein be made and being replaced and distortion, these replacements and distortion be all in the scope of the utility model protection.
Claims (5)
1. the band that is applicable to radial bore casing sidetracking drills and shows a Double Tops drill bit, and this drill body has blade on (1); It is characterized in that: at the root of drill body (1), be fixed with to drill and show ring (2), drill and show that ring (2) made by easy removing material, wear and show that the diameter of ring (2) is greater than drill body (1) maximum gauge.
2. the band that is applicable to radial bore casing sidetracking according to claim 1 drills and shows Double Tops drill bit, it is characterized in that: described drill body (1) is four cutting edge constructions, at each blade top, have one with drill body (1) axis the first cutting edge (3) at an angle.
3. the band that is applicable to radial bore casing sidetracking according to claim 2 drills and shows Double Tops drill bit, it is characterized in that: in described the first cutting edge (3) bottom, also have other the second cutting edge (4), the angle of cut of the second cutting edge (4) and the first cutting edge (3) in obtuse angle.
4. the band that is applicable to radial bore casing sidetracking according to claim 3 drills and shows Double Tops drill bit, it is characterized in that: drill and show that ring (2) and drill body (1) axis are rectangular, described in drill and show that the diameter of ring (2) is greater than drill bit the second cutting edge (4) external diameter.
5. the band that is applicable to radial bore casing sidetracking according to claim 1 drills and shows Double Tops drill bit, it is characterized in that: described in drill and show that ring (2), for aluminum annulus, is sleeved on drill body (1) thread root.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320881765.1U CN203756035U (en) | 2013-12-31 | 2013-12-31 | Double-top drill bit with drill through display applicable to radial drilling of casing for windowing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320881765.1U CN203756035U (en) | 2013-12-31 | 2013-12-31 | Double-top drill bit with drill through display applicable to radial drilling of casing for windowing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203756035U true CN203756035U (en) | 2014-08-06 |
Family
ID=51251323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320881765.1U Expired - Fee Related CN203756035U (en) | 2013-12-31 | 2013-12-31 | Double-top drill bit with drill through display applicable to radial drilling of casing for windowing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203756035U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747083A (en) * | 2013-12-31 | 2015-07-01 | 中国石油化工集团公司 | Double-top drill bit with drilling display function and applicable to radial borehole casing windowing |
-
2013
- 2013-12-31 CN CN201320881765.1U patent/CN203756035U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747083A (en) * | 2013-12-31 | 2015-07-01 | 中国石油化工集团公司 | Double-top drill bit with drilling display function and applicable to radial borehole casing windowing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151116 Address after: 100029 Beijing Chaoyang District Hui Xin a No. twelve layer 6 Patentee after: SINOPEC OILFIELD SERVICE CORPORATION Patentee after: Drilling Well Technology Institute, Shengli Petroleum Engineering Co., Ltd., SINOPEC Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee before: China Petrochemical Group Corp. Patentee before: Drilling Well Technology Institute, Shengli Petroleum Engineering Co., Ltd., SINOPEC |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20201231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |