CN104234634A

CN104234634A - Assembling type core-less drill bit

Info

Publication number: CN104234634A
Application number: CN201310234098.2A
Authority: CN
Inventors: 朱宝顺
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-06-14
Filing date: 2013-06-14
Publication date: 2014-12-24

Abstract

An assembling type core-less drill bit is high in drilling speed and good in guiding performance. The assembling type core-less drill bit is suitable for hole drilling without rock core drilling in underground coal mine gas drainage, discharging and emission, fire extinguishment, water exploring and draining and the like. The assembling type core-less drill bit is also suitable for hole drilling without rock core drilling in a ground face, petroleum, geothermy, a well, engineering, coalbed gas collecting, shale gas collecting and the like. According to the technical scheme, the assembling type core-less drill bit comprises five sections, a single-layer rib is assembled at the second section, a double-layer step type rib is assembled at the fourth section, the sections are in screwed connection, and meanwhile the single-layer rib and the step type rib are fixed. The first section is machined into a core-shift water hole, hard materials are in core-shift type, during drilling, no cores exist, drilling is carried out in a small-opening drill, and back face single-double-layer-rib step-by-step hole expanding is carried out. During drilling, four free faces are formed at a hole bottom. Through the drilling mode, drilling footage is quick, after the hard materials are abraded, only single-double ribs and the first section are replaced, long-term using can be achieved, designing is reasonable, raw materials are saved, and the comprehensive benefit of the drilling industry is improved.

Description

Packaging Noncoring drill bit

Technical field

The present invention relates to the Noncoring drill bit of probing.For the extraction of coal mine gas gas and extraction, release and discharge, fire extinguishing, the boring of the not corings such as leting speeper, the boring of the centreless such as be also applicable to ground oil, underground heat, coal bed gas is adopted, and shale gas comes, engineering probing.

Background technology

At present, probing does not need the Noncoring drill bit getting core, as diamond comprehensive drill bit, diamond compact (PDC) concave Noncoring drill bit, three aerofoil profile blade type Noncoring drill bits, Problems existing is that drill bit rock cuts comprehensively, resistance is large, speed is slow, rig feed pressure increases simultaneously, drilling rod is stressed, frangibility, when underground for probing discharges water, meet high pressure water, resistance is large, easily drilling tool is gone out outside hole, dangerous, when meeting high pressure methane gas, easy generation crown drill phenomenon, hard material, bag button carbide alloy, diamond compact (PDC), after Diamond Wear, whole bit body is scrapped, waste greatly, drilling cost increases.

Summary of the invention

The present invention will solve above technical problem: provide a kind of Novel assembling type Noncoring drill bit, not only overcome above problem, and it is fast to creep into chi, resistance is little, drilling rod is frangibility not, due to ladder-effect, high pressure water reduces, so safety the pressure that drilling tool produces, methane gas can not produce the phenomenon of crown drill to drilling tool, after hard material wearing and tearing, just change Section 1, individual layer fin, notch cuttype fin just can creep into chi, prevent wasting phenomenon, save raw material, applying unit saves cost simultaneously.

The present invention solves its technical problem, and the technical scheme of employing is:

Packaging Noncoring drill bit, is made up of 5 joints, often saves high quality round bar processing.Comprise individual layer fin, Double-ladder type fin, prosthomere end face processing groove mouth, core shift water hole, milling 3 rectangle grooves in Section 2,120 ° of equal faces, Section 4 milling 4 rectangle grooves 90 ° are uniform, also can process dovetail groove.Processing individual layer fin, Double-ladder type fin, is assembled in Section 2, Section 4 rectangle groove, and fin is fixed by Section 1,3 joints, 5 joints, often joint processing screw thread is fastening mutually, according to geology rock soft or hard condition, at rectangle, sintered diamond above Double-ladder fin, weldering knot diamond compact (PDC) carbide alloy, reasonable selection, groove can process dovetail groove, single double fins processing dovetail fin.Core shift shape is become, centreless when creeping into when prosthomere end face hard material makes.

Beneficial effect of the present invention is: centreless when creeping into, and prosthomere osculum creeps into, and Section 2, the reaming of Section 4 fin are crept into, and this mode forms 4 scope of freedoms at the bottom of hole, resistance is little, play the guiding role when Section 1 is crept into, and Section 2 and Section 3 lead mutually, boring is straight, and drilling tool is laborsaving, and frangibility is not with bending.Under the effect of the ladder wing, meet high pressure water, when gas pressure is large, large resistance can not be produced to drill bit, so safety, a bit body can be worked as 3 kinds of Noncoring drill bits and be used, according to geological conditions, and reasonable selection, bit body does not damage, can Long-Time Service, just change prosthomere, single, double fin just can creep into, applying unit saves cost, saves a large amount of raw material.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the present invention is further described:

Fig. 1 is schematic diagram of the present invention.Fig. 2 is Section 1,1,2 grooves in figure, 3 core shift water holes.Fig. 3 is Section 2,1 rectangle groove or dovetail groove in figure, and 120 ° uniform, assembling individual layer rectangle fin or dove-tail form fin in groove.Fig. 4 is Section 3,1,2 not car screw threads in figure, and the inside processing screw thread, object is fastening rectangle or dove-tail form fin.Fig. 5 is Section 4, Fig. 1, is above rectangle or dovetail groove milling to escape, 90 ° of equal faces, assembling rectangle or dovetail notch cuttype fin in groove.Fig. 6 is Section 5,1 not car button in figure, is used for fastening flaps, inner eye car button.One end car links stacks.Fig. 7 is individual layer rectangle or dove-tail form fin, 1 notch in figure, and in figure, 2,3 is effects end side having justified fixing individual layer fin, Fig. 8 is ladder rectangle or dovetail notch cuttype fin, in figure, 1,2 notches, in figure, 3,4 is effects end side having justified Fixed-order ladder type fin.

In FIG in schematic diagram, (1) (2) (3) hard material, 5 rectangle individual layers or dove-tail form individual layer fin, 4 is notch cuttype rectangle or dove-tail form fin.6 Section 1,7 Section 2,8 Section 3,9 Section 4,10 Section 5.

Detailed description of the invention

In FIG, often joint between with screwed connection together, (6) (8) are by fastening for individual layer fin as shown in Figure 1, and (8) (9) are by fastening for notch cuttype fin in the example depicted in figure 1.(1) (2) (3) are hard material in the example depicted in figure 1, comprise carbide alloy, diamond compact, diamond.In fig. 2, (1) (2) groove mouth, (3) core shift water hole.In figure 3, (1) rectangle or dovetail groove are the rectangular or dovetail fin parts of assembling individual layer.Rectangle or the milling of dove-tail form groove are to screw thread escape place, and when being convenient to screwed connection, individual layer is rectangular or dovetail fin is fastening, rectangular or dovetail groove adds man-hour, and 120 ° uniform.In the diagram, (1) (2) are light face, and the inside processing screw thread, one end is fastening, individual layer fin, the fastening notch cuttype fin in one end.In Figure 5, in example shown in (1) (2), be rectangular or the position of dovetail groove, (3) rectangular or dovetail groove 90 ° is uniform, in order to assemble notch cuttype fin, in figure 6, (1) car button inside exemplified middle light face, other end car links stacks.In the figure 7, (1) notch, (2) (3) are that fastening flaps effect is played at individual layer fin two ends.(1) (2) notch in fig. 8, (3) (4) are notch cuttype fin two ends, play the effect of fastening notch cuttype fin.

Claims

1. packaging Noncoring drill bit, is made up of 5 joints, it is characterized in that composition comprises individual layer fin (7), Double-ladder type fin (8), prosthomere (2) core shift hydrophthalmia.

2. according to claim 1, in core shift groove, hard material becomes core shift shape, and process 3 rectangle grooves to escape place, 120 ° uniform, and figure (3) processing 4 rectangle grooves are 90 ° of equal Bututs (5) to escape place.

3. according to claim 2, also dovetail groove can be processed, 120 ° of equal Bututs (3), processing dovetail groove 90 ° of equal Bututs (5).

4. according to claim 2,3, the upper round shape in below is processed at individual layer fin two ends, figure (7), and in figure 2,3, the upper round shape in below is processed at Double-ladder type fin two ends, in figure (8) figure 3,4.

5. according to claim 2, individual layer fin is processed into dove-tail form figure (7) Double-ladder type fin and is processed into dove-tail form figure (8).