CN203531757U - Oil and gas field hard-rock drilling compact bit - Google Patents
Oil and gas field hard-rock drilling compact bit Download PDFInfo
- Publication number
- CN203531757U CN203531757U CN201320727657.9U CN201320727657U CN203531757U CN 203531757 U CN203531757 U CN 203531757U CN 201320727657 U CN201320727657 U CN 201320727657U CN 203531757 U CN203531757 U CN 203531757U
- Authority
- CN
- China
- Prior art keywords
- composite sheet
- sharp
- tooth
- tooth shaped
- circular
- 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.)
- Expired - Lifetime
Links
- 239000011435 rock Substances 0.000 title claims abstract description 30
- 238000005553 drilling Methods 0.000 title abstract description 10
- 239000002131 composite material Substances 0.000 claims abstract description 63
- 238000005520 cutting process Methods 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical group [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 230000035515 penetration Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000007790 scraping Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
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- Earth Drilling (AREA)
Abstract
The utility model discloses an oil and gas field hard-rock drilling compact bit. According to the compact bit, a plurality of blades, water holes and chip removal grooves are arranged on and formed in a bit body, sharp-tooth-shaped rear bushings and round rear bushings are arranged at intervals on the blades, sharp-tooth-shaped composite sheets are inlaid and welded on the sharp-tooth-shaped rear bushings, round composite sheets are inlaid and welded on the round rear bushings, and the sharp-tooth-shaped composite sheets and the round composite sheets are distributed at intervals on the same blades and distributed in a front-and-back staggered manner on the different blades. The compact bit has the benefits as follows: the penetration rate can be significantly increased; the service life can be prolonged; and the overall performance of the bit can be significantly improved.
Description
Technical field
The utility model relates to a kind of oil gas field hard-rock boring drill bit, particularly a kind of oil gas field hard-rock boring compact bit.
Background technology
At present, the cutting element on existing compact bit (composite sheet) great majority are all circular, while creeping into hard rock, cutting element is difficult to be pressed into rock, and broken gram of rock formation is got, and shows as drilling efficiency low, bit life is short, is perplexing for a long time probing circle always.
Chinese patent 200320104368.X(2004 authorized December 29), content, for impregnated tooth to be set on drill bit wing to reach vibration damping, wear-resisting, to be protected composite sheet, thereby is increased the service life.Also have other similar patents, by the secondary tooth of carbide alloy or composite sheet being set on wing in the hope of increasing the service life.The shortcoming of this form is only to consider to strengthen the self-protection ability of drill bit, and does not study Breaking Rock Mechanism; By sacrificing drilling speed, increase the service life, can not improve drilling efficiency.
Chinese patent 200720178046.8(2008 authorized November 12), content is that on drill bit, welding-on composite sheet form is all sharp-tooth shaped, this form can obtain higher drilling efficiency for soft flowing rock formation, but the sharp-tooth shaped composite sheet damage of very easily bursting apart in hard rock, is difficult to obtain higher application life.
Summary of the invention
The purpose of this utility model is in order to solve compact bit structure design unreasonable of existing use, to cause the problem that drilling life of bit is short and drilling efficiency is low and a kind of oil gas field hard-rock boring compact bit providing.
Oil gas field hard-rock boring compact bit described in the utility model is on drill body, to be provided with wing, hydrophthalmia and chip area, wing is provided with several, on wing, space is provided with sharp-tooth shaped backsight and circular backsight, on sharp-tooth shaped backsight, welding-on has sharp-tooth shaped composite sheet, on circular backsight, welding-on has circular composite sheet, sharp-tooth shaped composite sheet and circular composite sheet are arranged space on same wing, and on different wings, front and back are staggered.
The wedge angle of sharp-tooth shaped composite sheet is 60 degree～120 degree, by circular composite sheet cutting, is formed.
The end face of sharp-tooth shaped composite sheet is higher than knuckle-tooth shape composite sheet end face 0.5～1mm.
Sharp-tooth shaped composite sheet and knuckle-tooth shape composite sheet are brazed on the sharp-tooth shaped backsight and circular backsight of wing with silver-bearing copper respectively.
Drill body, wing, hydrophthalmia and chip area are the structure of prior art, so concrete structure does not further repeat.
Operating principle of the present utility model is as described below:
The end face of sharp-tooth shaped composite sheet is higher than knuckle-tooth shape composite sheet end face 0.5～1mm, make drill bit in the course of the work sharp-tooth shaped composite sheet can more easily first be pressed into hard rock, then the circular composite sheet at both sides and rear can be pushed and scraping hole bed rock stone, when cutting hard rock, first pointed tooth composite sheet is pressed into rock and depicts a groove, rock stress at the bottom of release aperture, the circular composite sheet at both sides (or rear) is sheared the residue rock that scraping intensity has weakened, to reach the object that improves drilling speed.Meanwhile, when the situation of creeping into occurs that when unstable, the high impact resistance of circular composite sheet can be resisted impact again, zygodont shape composite sheet forms protection, improves the self-protection ability of drill bit, thereby increases the service life.
The beneficial effects of the utility model:
1, the utility model by traditional cutting way by shearing, plow is changed in grinding, scraping mode, can make rate of penetration significantly improve;
2, the utility model, can be when the situation of creeping into be unstable by the mixing welding-on of sharp-tooth shaped composite sheet and knuckle-tooth shape composite sheet, and knuckle-tooth shape composite sheet zygodont shape composite sheet forms shock resistance protection, improves the self-protection ability of drill bit, increases the service life;
3, the utility model is arranged by Rational Arrangement the compactness of cutting element, has both improved the cutting power of drill bit, has strengthened again the intensity of cutting structure, and the overall performance of drill bit is significantly improved.
Accompanying drawing explanation
Fig. 1 is the plan structure schematic diagram of compact bit described in the utility model.
Fig. 2 is the main TV structure schematic diagram of compact bit described in the utility model.
Fig. 3 is the circumferential overlapping schematic diagram of the wing of compact bit described in the utility model.
Fig. 4 is sharp-tooth shaped composite sheet and the backsight schematic side view thereof of compact bit described in the utility model.
Fig. 5 is that sharp-tooth shaped composite sheet and the backsight master thereof of compact bit described in the utility model looks schematic diagram.
Fig. 6 is the sharp-tooth shaped compact structure form schematic diagram of compact bit described in the utility model.
1, drill body 2, wing 3, hydrophthalmia 4, sharp-tooth shaped backsight 5, circular backsight
6, sharp-tooth shaped composite sheet 7, circular composite sheet.
The specific embodiment
Refer to shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6:
Oil gas field hard-rock boring compact bit described in the utility model is on drill body 1, to be provided with wing 2, hydrophthalmia 3 and chip area, wing 2 is provided with four, on wing 2, space is provided with sharp-tooth shaped backsight 4 and circular backsight 4, on sharp-tooth shaped backsight 4, welding-on has sharp-tooth shaped composite sheet 6, on circular backsight 5, welding-on has circular composite sheet 7, sharp-tooth shaped composite sheet 6 and circular composite sheet 7 are arranged space on same wing 2, and on different wings 2, front and back are staggered.
The wedge angle of sharp-tooth shaped composite sheet 6 is 60 degree～120 degree, by circular composite sheet 7 cuttings, is formed.
The end face of sharp-tooth shaped composite sheet 6 is higher than knuckle-tooth shape composite sheet 7 end face 0.5～1mm.
Sharp-tooth shaped composite sheet 6 and knuckle-tooth shape composite sheet 7 are brazed on the sharp-tooth shaped backsight 4 and circular backsight 5 of wing 2 with silver-bearing copper respectively.
The structure that drill body 1, wing 2, hydrophthalmia 3 and chip area are prior art, so concrete structure does not further repeat.
Operating principle of the present utility model is as described below:
The end face of sharp-tooth shaped composite sheet 6 is higher than knuckle-tooth shape composite sheet 7 end face 0.5～1mm, make drill bit in the course of the work sharp-tooth shaped composite sheet 6 can more easily first be pressed into hard rock, then the circular composite sheet 7 at both sides and rear can be pushed and scraping hole bed rock stone, when cutting hard rock, first pointed tooth composite sheet 6 is pressed into rock and depicts a groove, rock stress at the bottom of release aperture, the circular composite sheet 7 of both sides (or rear) is sheared the residue rock that scraping intensity has weakened, to reach the object that improves drilling speed.Meanwhile, when the situation of creeping into occurs that when unstable, the high impact resistance of circular composite sheet 7 can be resisted impact again, zygodont shape composite sheet 6 forms protection, improves the self-protection ability of drill bit, thereby increases the service life.
Claims (4)
1. an oil gas field hard-rock boring compact bit, on drill body, to be provided with wing, hydrophthalmia and chip area, it is characterized in that: wing is provided with several, on wing, space is provided with sharp-tooth shaped backsight and circular backsight, on sharp-tooth shaped backsight, welding-on has sharp-tooth shaped composite sheet, on circular backsight, welding-on has circular composite sheet, and sharp-tooth shaped composite sheet and circular composite sheet are arranged space on same wing, and on different wings, front and back are staggered.
2. a kind of oil gas field hard-rock boring compact bit according to claim 1, is characterized in that: the wedge angle of described sharp-tooth shaped composite sheet is 60 degree～120 degree, by circular composite sheet cutting, is formed.
3. a kind of oil gas field hard-rock boring compact bit according to claim 1, is characterized in that: the end face of described sharp-tooth shaped composite sheet is higher than knuckle-tooth shape composite sheet end face 0.5～1mm.
4. a kind of oil gas field hard-rock boring compact bit according to claim 1, is characterized in that: described sharp-tooth shaped composite sheet and knuckle-tooth shape composite sheet are brazed on the sharp-tooth shaped backsight and circular backsight of wing with silver-bearing copper respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320727657.9U CN203531757U (en) | 2013-11-18 | 2013-11-18 | Oil and gas field hard-rock drilling compact bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320727657.9U CN203531757U (en) | 2013-11-18 | 2013-11-18 | Oil and gas field hard-rock drilling compact bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203531757U true CN203531757U (en) | 2014-04-09 |
Family
ID=50417979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320727657.9U Expired - Lifetime CN203531757U (en) | 2013-11-18 | 2013-11-18 | Oil and gas field hard-rock drilling compact bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203531757U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577146A (en) * | 2020-05-14 | 2020-08-25 | 北京探矿工程研究所 | Novel high-efficient shock-resistant diamond compact piece coring bit |
-
2013
- 2013-11-18 CN CN201320727657.9U patent/CN203531757U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577146A (en) * | 2020-05-14 | 2020-08-25 | 北京探矿工程研究所 | Novel high-efficient shock-resistant diamond compact piece coring bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |