CN203022637U - High-pressure water jet plug-drilling drill for lateral drilling - Google Patents
High-pressure water jet plug-drilling drill for lateral drilling Download PDFInfo
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- CN203022637U CN203022637U CN 201220715751 CN201220715751U CN203022637U CN 203022637 U CN203022637 U CN 203022637U CN 201220715751 CN201220715751 CN 201220715751 CN 201220715751 U CN201220715751 U CN 201220715751U CN 203022637 U CN203022637 U CN 203022637U
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- water jet
- pressure water
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Abstract
The utility model discloses a high-pressure water jet plug-drilling drill for lateral drilling. The high-pressure water jet plug-drilling drill is used for finishing a lateral drilling operation by forming large-diameter spray holes in cement test pieces and ground layers by utilizing high-pressure water jet. The high-pressure water jet plug-drilling drill comprises a drill base body (1) and a drill central body (2) which are connected to each other. The high-pressure water jet plug-drilling drill is characterized in that a plurality of drill side wings (3) are uniformly arranged at the periphery of the drill central body (2); a chip groove (8) is formed between two adjacent drill side wings (3); gauge protection teeth (4) are arranged on the surfaces of the outer sides of the drill side wings (3); cutting teeth (5) are arranged on the bottom surfaces of the drill side wings (3); nozzles (6) communicated with an inner cavity of the drill base body (1) are further formed in the bottom surfaces of the drill side wings (3); and internal threads (7) are arranged in the cavity. The high-pressure water jet plug-drilling drill for the lateral drilling has the advantages that the structure is simple, the rock breaking efficiency is high, and the working life is long; and the drill can be completely matched with a lateral drilling plug-drilling drill technique, so that the use ratio of energy can be substantially improved, and the drilling speed is higher than the normal drilling speed.
Description
Technical field
The utility model is sidetracked hole high pressure water jet drilling plug drill bit, is applicable to old well window sidetracking and is taped the latent power in the old liberated area.
Background technology
Most of old filed has entered the high water-cut development later stage, therefore, utilize old well window sidetracking technology to be taped the latent power in the old liberated area, in order to again bore to meet between oil reservoir structure high-order bit or well and be detained remaining oil enriched area, exploitation for many years old well pattern and the wellblock in obtain the gas stream of " newly ", this technology with beat the adjustment well, offset well is compared, but save operation cost not only and can improve the ultimate recovery of block.But become but bore plug technique the technical bottleneck that sidetracked hole is implemented conventional measure, had a strong impact on the various technologies of oil well and normally implemented.
At present, drilling out has following methods usually:
(1) rotary drilling: adopt rotary drilling and the larger special drilling tool of wedging amount to complete, need apply and control the pressure of the drill, have that operating cost is high, easy jam, sleeve pipe and the problem such as drilling tool is fragile, sometimes also be forced to carry out fishing because of drilling tool parts or the fragment well etc. that falls, in the small size well, these problems are more outstanding, are not suitable for the sidetracked hole operation;
(2) helicoid hydraulic motor: operation field bores plug mainly take helicoid hydraulic motor as main, that a great problem of plug construction is bored in the puzzlement operation but rate of penetration is low always, along with the prolongation of development time, affected by the factors such as hole condition constantly worsens, detection means falls behind, had a strong impact on efficiency of construction.
The utility model content
The purpose of this utility model is to overcome the defective of prior art and a kind of sidetracked hole high pressure water jet drilling plug drill bit for solving the problems such as the Sidetracking Technology rate of penetration is slow, efficiency of breaking rock is low, drilling cost is high is provided.
The technical scheme that realizes above-mentioned purpose is: a kind of sidetracked hole high pressure water jet drilling plug drill bit, comprise interconnective bit matrix and bit central body, it is characterized in that: some drill bit flanks evenly are set around the bit central body, between adjacent two drill bit flanks, chip area is set, the outer surface of drill bit flank arranges gauge teeth, the bottom surface of drill bit flank arranges cutting teeth, and the bottom surface of drill bit flank also arranges nozzle and is communicated with the bit matrix internal cavities, and internal thread is set in cavity.
During use, the internal thread of bit matrix matches with drill string, water under high pressure can reach 20MPa from nozzle ejection pressure drop, and rate of flow of fluid is 216.56m/s, with this understanding, be enough to crack reduction compressive strength on the cement plug surface, in the stratum that drill bit wedging compressive strength reduces subsequently, the surface cracks, and it is broken that rock interior is occured, and breaks away from rock matrix, form landwaste, thereby reach the purpose of fast broken rock, raising drilling speed.The drill bit flank can arrange 2-8 as required.
Wherein preferred version is:
Described bit central body evenly arranges 4 drill bit flanks, and each drill bit flank arranges nozzle.The moment of distribution of 4 drill bits is the most reasonable.
Described nozzle is the straight barrel type structure, and nozzle length is 5 with the ratio of nozzle inside diameter, and nozzle inside diameter is 4-6mm.
Described nozzle and center line of bit are 4 °-7 °.
Described gauge teeth is arranged in the outside of drill bit flank, is evenly arranged 3 gauge teeths in the bottom of drill bit flank, and described gauge teeth and cutting teeth are the sintering skin of cemented carbide tooth.Guarantee diameter and the ground effect of boring.
The beneficial effects of the utility model are: through OVERALL OPTIMIZA-TION DESIGN FOR, arranged four high pressure nozzles on drill bit, jet cuts out the scope of freedom on rock for cutter when cutting rock; Jet enters the crackle that cutter is left on rock, and penetrates along the crystal boundary face of rock, helps the expansion crack until become fragment; The tapered layout of sintering skin of cemented carbide tooth on the drill bit flank, the mode fragmentation shaft bottom formation rock ansa to push under the effect of low pressure and low moment of torsion.The rock ansa has discharged original stress, makes along " chip hold down effect " of shear action direction to disappear, and the strength decreased of rock, and then can produce the rock volume fragmentation.The utility model is simple in structure, and efficiency of breaking rock is high, and long working life can match sidetracked hole fully and bore in the plug drilling technology, and this drill bit can increase substantially the utilization rate of energy, and its bit speed is 1.5-2 times of conventional drilling.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is sidetracked hole high pressure water jet drilling plug drill bit top view;
Wherein: 1, bit matrix 2, bit central body 3, drill bit flank 4, gauge teeth 5, cutting teeth 6, nozzle 7, internal thread 8, chip area.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment 1:
As shown in Figure 1 and Figure 2, the high water jet that grinds of sidetracked hole bores the plug drill bit, comprises bit matrix 1, bit central body 2, drill bit flank 3, gauge teeth 4, cutting teeth 5, nozzle 6, internal thread 7 and chip area 8.Top is bit matrix 1, and the bottom connects bit central body 2, in the surrounding of bit central body 2,2-8 drill bit flank 3 is set respectively.Between each drill bit flank 3, chip area 8 is set, gauge teeth 4 is distributed in the outer surface of drill bit flank 3, and cutting teeth 5 is distributed on drill bit flank 3 bottom surfaces.The bottom surface of drill bit flank 3 also arranges nozzle 6 and is communicated with bit matrix 1 internal cavities, and internal thread 7 is set in cavity.
Nozzle 6 is the straight barrel type structure, and nozzle 6 length are 5 with the ratio of nozzle 6 internal diameters, and nozzle 6 internal diameters are 4-6mm.
Embodiment 2:
On the basis of embodiment 1, drill bit flank 3 is preferably 4.Nozzle 6 is straight tube shape structure, nozzle 6 L/D ratios are 5, nozzle length is 25mm, nozzle 6 has four, in the bottom of four drill bit flanks 3, a nozzle 6 is arranged respectively, the nozzle 6 that is arranged on drill bit flank 3 is 6 ° of layouts with center line of bit, and nozzle 6 outlet diameters are 5mm, and 4 chip areas 8 are arranged between the drill bit flank; Gauge teeth 4 is arranged in the outside of 4 drill bit flanks 3, is evenly arranged 3 gauge teeths in the bottom of drill bit flank 3, and four drill bit flanks are arranged 12 gauge teeths altogether, and the sintering skin of cemented carbide tooth is distributed in the bottom of drill bit flank 3, and the drill bit flank is arranged 8 teeth.
Use procedure or operating principle:
When fractured rock, arrive the drill bit inner chamber in outside fluid process manifold of ground, drill string, when flow reaches 17L/s, fluid pressure drop when nozzle 6 ejection can reach 20MPa, rate of flow of fluid is 216.56m/s, and with this understanding, the high pressure nozzle pressurization takes the lead in impacting rock, rock hits the border, contact zone and produces tensile stress on every side under the strike effect of jet; Although hit the compressive strength that the compressive stress that produces does not reach rock, form crackle in cement.Water jet will enter the crackle space, under the water wedging action, the most advanced and sophisticated tensile stress that produces in crack is concentrated, the crack is developed rapidly and enlarge, in the stratum that drill bit wedging compressive strength reduces subsequently, the surface cracks, and it is broken that rock interior is occured, and breaks away from rock matrix, form landwaste, thereby reach the purpose of fast broken rock, raising drilling speed.
Above embodiment is only for illustration of the utility model, but not to restriction of the present utility model, person skilled in the relevant technique, in the situation that do not break away from spirit and scope of the present utility model, can also do various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.
Claims (5)
1. sidetracked hole high pressure water jet drilling plug drill bit, comprise interconnective bit matrix (1) and bit central body (2), it is characterized in that: some drill bit flanks (3) evenly are set around bit central body (2), chip area (8) is set between adjacent two drill bit flanks (3), the outer surface of drill bit flank (3) arranges gauge teeth (4), the bottom surface of drill bit flank (3) arranges cutting teeth (5), the bottom surface of drill bit flank (3) also arranges nozzle (6) and is communicated with bit matrix (1) internal cavities, and internal thread (7) is set in cavity.
2. sidetracked hole high pressure water jet drilling plug drill bit according to claim 1, it is characterized in that: described bit central body (2) evenly arranges 4 drill bit flanks, and each drill bit flank (3) arranges nozzle (6).
3. sidetracked hole high pressure water jet drilling plug drill bit according to claim 1 and 2 is characterized in that: described nozzle (6) is the straight barrel type structure, and nozzle length is 5 with the ratio of nozzle inside diameter, and nozzle inside diameter is 4-6mm.
4. sidetracked hole high pressure water jet drilling plug drill bit according to claim 1 and 2 is characterized in that: described nozzle (6) is 4 °-7 ° with center line of bit.
5. sidetracked hole high pressure water jet drilling plug drill bit according to claim 1, it is characterized in that: described gauge teeth (4) is arranged in the outside of drill bit flank (3), be evenly arranged 3 gauge teeths in the bottom of drill bit flank (3), described gauge teeth (4) and cutting teeth (5) are the sintering skin of cemented carbide tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220715751 CN203022637U (en) | 2012-12-21 | 2012-12-21 | High-pressure water jet plug-drilling drill for lateral drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220715751 CN203022637U (en) | 2012-12-21 | 2012-12-21 | High-pressure water jet plug-drilling drill for lateral drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203022637U true CN203022637U (en) | 2013-06-26 |
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ID=48646628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220715751 Expired - Fee Related CN203022637U (en) | 2012-12-21 | 2012-12-21 | High-pressure water jet plug-drilling drill for lateral drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203022637U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103556951A (en) * | 2013-10-29 | 2014-02-05 | 中国石油化工股份有限公司 | Casing windowing drill bit |
| EP2910727A1 (en) * | 2014-02-20 | 2015-08-26 | Varel International, Ind., L.P. | Frac plug mill bit |
| US9376866B2 (en) | 2013-08-23 | 2016-06-28 | Varel International Ind., L.P. | Hybrid rotary cone drill bit |
| CN114109257A (en) * | 2021-11-22 | 2022-03-01 | 湖南师范大学 | Water jet assisted hobbing cutter drilling device |
-
2012
- 2012-12-21 CN CN 201220715751 patent/CN203022637U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9376866B2 (en) | 2013-08-23 | 2016-06-28 | Varel International Ind., L.P. | Hybrid rotary cone drill bit |
| US10538970B2 (en) | 2013-08-23 | 2020-01-21 | Varel International Ind., L.P. | Method for drilling out a plug using a hybrid rotary cone drill bit |
| CN103556951A (en) * | 2013-10-29 | 2014-02-05 | 中国石油化工股份有限公司 | Casing windowing drill bit |
| EP2910727A1 (en) * | 2014-02-20 | 2015-08-26 | Varel International, Ind., L.P. | Frac plug mill bit |
| CN114109257A (en) * | 2021-11-22 | 2022-03-01 | 湖南师范大学 | Water jet assisted hobbing cutter drilling device |
| CN114109257B (en) * | 2021-11-22 | 2022-09-27 | 湖南师范大学 | Water jet assisted hobbing cutter drilling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20131221 |