US1754671A - Drill bit - Google Patents
Drill bit Download PDFInfo
- Publication number
- US1754671A US1754671A US285521A US28552128A US1754671A US 1754671 A US1754671 A US 1754671A US 285521 A US285521 A US 285521A US 28552128 A US28552128 A US 28552128A US 1754671 A US1754671 A US 1754671A
- Authority
- US
- United States
- Prior art keywords
- bit
- water
- drill bit
- bushings
- courses
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000010276 construction Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- ONKUMRGIYFNPJW-KIEAKMPYSA-N ethynodiol diacetate Chemical compound C1C[C@]2(C)[C@@](C#C)(OC(C)=O)CC[C@H]2[C@@H]2CCC3=C[C@@H](OC(=O)C)CC[C@@H]3[C@H]21 ONKUMRGIYFNPJW-KIEAKMPYSA-N 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
- E21B10/627—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements
- E21B10/633—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements independently detachable
Definitions
- the invention has for another object to bring about in such a means as aforesaid, a
- the 'invention aims to provide means which are interchangeable and replaceable when samebecome worn by the contact of sand and other cuttingsubstances passing at high velocity which becomes mixed with Water under ump pressure.
- Figure 2 isan end, section 011- line Elf-Zot..
- Fi re 3 is a :fragmentary view in section of a mo iied example of the invention
- an'cl Figure 4 is a detail view of one of the interchangeable bushings.
- Fig- ⁇ ure 1 in which an improved typeof bit is 1l-" lustrated, the body 1 of which is formed with shoulders 2-'set at such an angle as to allow for rapid circulation of water, and to direct the same upward,'past the shank 3 without interference thereby toretard its progress.
- This bit is further provided with interchangeable cutting blades 4i, which are' so disposed in the'head as to insure maximum cutting eiiciency.
- the invention consists primarily in providing a cavity 5, cored out of the shank 3, which is for the purpose of materially shortening the water coursesi 6, drilled downwardy and outward from the bottom of this cavity to a properpbint for discharging fluidon the operativef'surfaces of the blades- 4.
- a properpbint for discharging fluidon the operativef'surfaces of the blades- 4.
- courses 6 are provided with bushings 7 of steel or its equivalent and, as shown in Figure 4, are provided with an annular shoulder 8 about the tops which shoulder prevents the tubular bushing from passing through the passage.
- These bushings are merely inserted into the passages from the top ends and are not required to be fastened except possibly by making a snug lit.
- a protuberance 9 is formed underneath'the annular shoulder 8 of the bushing, which enters a corresponding recess in the top edge of the passage, as shown in Figures l and 4.
- a modified showing instead of providing ⁇ a straight cavity as in Figure l, the passages 2g 10 are drilled in the shank 3 at angles with respect to the axis of the body l, and are substantially funnel shaped. In forming the courses thus, even less friction Ais encountered as the fluid does not have to contact with a flat surface, but may pass unrestrictedly through the passages to the outside walls of the body.
Description
JQ DAHL April 15, 19%..
mfd
V h w Patented Apr. 1.93()l :fUNiTE-o sTnT1= .sl PATENT" oFFlcE l :01m naar., or'- nALLAs, TEXAS, assienon To DAHL BIT conroaarion, or DALLAS,
DRILL :BIT
Application led J'une 1,5,
and it has especial reference to certain new and useful improvements in drill bits of the type wherein a continuous stream of water is injected into the hole being drilled, for proper lubrication of the bit lin operation, and the principal obj ect of the invention resides in the provision in such a bit of .a means to reduce materially the friction created by passage of water and'slush .under pressure through the watercourses in the body of the bit, and to thus increase thelongevity and consequent usefulness of the tool.
The invention has for another object to bring about in such a means as aforesaid, a
considerable reduction in the strain upon the pressure pump employed to circulate water in the hole,.by minimizing friction in the bit, and in so doing, prolonging thelife of the zo pump and increasing its eiliciency.
Still further, the 'invention aims to provide means which are interchangeable and replaceable when samebecome worn by the contact of sand and other cuttingsubstances passing at high velocity which becomes mixed with Water under ump pressure. With the oregoing objects as paramount, the invention has particular- Areference to its salient featuresof construction and arrangement in the'bit, to become manifest as the de l Continuin yscription proceeds, taken in connection with the Vaccompanying drawings, .wherein Figure 1 represents a side elevational view of a bit in which the invention is incorpo-4 rated, parts being brokenaway to better illustrate the same.
Figure 2 isan end, section 011- line Elf-Zot..
Figure 1f. A
now more in detail with the drawings, re erence is primarily made to Fig-` ure 1 in which an improved typeof bit is 1l-" lustrated, the body 1 of which is formed with shoulders 2-'set at such an angle as to allow for rapid circulation of water, and to direct the same upward,'past the shank 3 without interference thereby toretard its progress.
1928.` serial No. 285,521.
This bit is further provided with interchangeable cutting blades 4i, which are' so disposed in the'head as to insure maximum cutting eiiciency.
It will be understood however, that` the specific construction of the. bit shown does not in any way restrict the use of the invention to be presently described in detail, as the invention is adapted for application to any type of earth boring tool employing the circulation of fluid as a lubricating medium.
Accordingly, the invention consists primarily in providing a cavity 5, cored out of the shank 3, which is for the purpose of materially shortening the water coursesi 6, drilled downwardy and outward from the bottom of this cavity to a properpbint for discharging fluidon the operativef'surfaces of the blades- 4. In so shortening the water courses, much friction is obviated 4in passinghazardous condition. lTo so reduce the likelihood of plugging the water courses in the bit is obviously an-important feature in bit construction. f J v Fluidpassingthrough the courses 'often attains a pressure of 1000 pounds and such pressure, if unduly'retarded brings about an enormous strain upon the pump, and when-A possibilities 'of plugging are removed,` normal and efficient performance of the pump is assured, obviously also, adding to the life of thev pump.
Passage of water through the courses 6 at such high velocity, and carrying with it quantities of sand and other similarfsubstances, nally wears upon` the walls of the passages to, such an extent as'to impair the efficiency of the head and it is often necessary to dispense with the tool prematurely. Toobviate Lthis disadvantage and expensive practice, theA f 2 y l 1,754,671
courses 6 are provided with bushings 7 of steel or its equivalent and, as shown in Figure 4, are provided with an annular shoulder 8 about the tops which shoulder prevents the tubular bushing from passing through the passage. These bushings are merely inserted into the passages from the top ends and are not required to be fastened except possibly by making a snug lit. However, in 10 order to aline the lower ends of the bush'- ings, which are obliquely cut to correspond With the exterior surface of the bit stock, a protuberance 9 is formed underneath'the annular shoulder 8 of the bushing, which enters a corresponding recess in the top edge of the passage, as shown in Figures l and 4. With especial reference to Figure 3, a modified showing, instead of providing` a straight cavity as in Figure l, the passages 2g 10 are drilled in the shank 3 at angles with respect to the axis of the body l, and are substantially funnel shaped. In forming the courses thus, even less friction Ais encountered as the fluid does not have to contact with a flat surface, but may pass unrestrictedly through the passages to the outside walls of the body.
In order to remove the bushings 7 from the passages 6, it is required simply toin sert a suitable tool inthe lower end of the passage, and drive the bushing upward.
What is claimed is In a drill bit, a shank having angular bores and bushings in the bores having circular outwardly extendi flan es on their upper ends and having epen ing projections on the under faces of the flanges, the
bushings having their lower ends bevelled to lie flush with the periphery of the Shanks,
` the bores at the upper ends thereof having lateral recesses to receive the projections, the recesses and projections Abeing located and related so that when the pro]ections lie in the recesses the bevelled ends of the bushin are held flush with the shank testimonyI whereof I aixty si nature.
\ lJO D
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US285521A US1754671A (en) | 1928-06-15 | 1928-06-15 | Drill bit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US285521A US1754671A (en) | 1928-06-15 | 1928-06-15 | Drill bit |
Publications (1)
Publication Number | Publication Date |
---|---|
US1754671A true US1754671A (en) | 1930-04-15 |
Family
ID=23094604
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US285521A Expired - Lifetime US1754671A (en) | 1928-06-15 | 1928-06-15 | Drill bit |
Country Status (1)
Country | Link |
---|---|
US (1) | US1754671A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2634953A (en) * | 1948-12-13 | 1953-04-14 | Reed Roller Bit Co | Slush nozzle for drill bits |
US2719027A (en) * | 1951-04-21 | 1955-09-27 | Reed Roller Bit Co | Drilling fluid nozzles for drill bits |
US5941461A (en) * | 1997-09-29 | 1999-08-24 | Vortexx Group Incorporated | Nozzle assembly and method for enhancing fluid entrainment |
US5992763A (en) * | 1997-08-06 | 1999-11-30 | Vortexx Group Incorporated | Nozzle and method for enhancing fluid entrainment |
-
1928
- 1928-06-15 US US285521A patent/US1754671A/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2634953A (en) * | 1948-12-13 | 1953-04-14 | Reed Roller Bit Co | Slush nozzle for drill bits |
US2719027A (en) * | 1951-04-21 | 1955-09-27 | Reed Roller Bit Co | Drilling fluid nozzles for drill bits |
US5992763A (en) * | 1997-08-06 | 1999-11-30 | Vortexx Group Incorporated | Nozzle and method for enhancing fluid entrainment |
US5941461A (en) * | 1997-09-29 | 1999-08-24 | Vortexx Group Incorporated | Nozzle assembly and method for enhancing fluid entrainment |
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