CN202611596U

CN202611596U - Stepped guide type coreless drill

Info

Publication number: CN202611596U
Application number: CN 201220158068
Authority: CN
Inventors: 朱宝顺
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-16
Filing date: 2012-04-16
Publication date: 2012-12-19
Anticipated expiration: 2022-04-16

Abstract

A stepped guide type coreless drill with fast drilling speed and good guide performance is provided. The drill is particularly applied to coal mines and underground, gas extraction and exhaust, releasing and discharging, water releasing, fire extinguishing and hole drilling, and further applied to petroleum, geothermal wells, water wells, engineering holes, coal bed gas mining drilling and shale gas mining drilling. The technical scheme is that a front section, a middle section and a tail section are in screw thread connection, the end face of the front section is in a core-shifting shape when a hard material is welded, three single-layer fins are welded on the front face of the middle section, and four double-layer fins are welded on the upper face of the tail section. During drilling, the front section is guided with the middle section, a drill hole is straight, and a small aperture is drilled in. When the single-layer fins ream holes and drill, the double-layer stepped fins ream holes and drill in step by step. The stepped guide type coreless drill is fast in drill speed, reasonable in structure, convenient to operate and capable of accelerating drilling speed and improves comprehensive efficiency of drilling industries.

Description

Staged guidance type Noncoring drill bit

Technical field

The utility model relates to a kind of Noncoring drill bit of drilling required usefulness; Be applicable to extraction of coal mine gas gas and extraction, methane gas is released and is discharged, and spy discharges water; Fire extinguishing boring is applicable to that also oil, geothermal well, well, coal bed gas are adopted, shale gas is adopted, engineering the drilling.

Background technology

At present, the Noncoring drill bit that probing does not need coring to use is like the comprehensive drill bit of diamond, diamond compact (PDC) concave Noncoring drill bit; The problem that exists is that during the centreless probing, drill bit is comprehensive cutting to the rock stratum cutting; The rock stratum is big to the drill bit resistance, so it is slow to creep into chi speed, and inefficiency.The rig operating pressure increases the drilling rod frangible to drilling rod and drill bit simultaneously.Especially in coal mine gas extraction and extraction, release and discharge in the centreless probing, creep into that chi efficient is low, pore-forming is few, directly influenced the progress of gas control.When spy discharges water, comprehensive drill bit of diamond and diamond compact concave Noncoring drill bit, when meeting high pressure water, because the gap between these two kinds of drill bits and the rock stratum is little, high pressure water current are not smooth, and drilling tool is produced big pressure, are prone to drilling tool is rushed at outside the hole, and are dangerous.When meeting the high pressure methane gas, be prone to take place the crown drill phenomenon.

Summary of the invention

In order to overcome the comprehensive drill bit of diamond, diamond compact (PDC) concave Noncoring drill bit, in probing, penetration rate is slow, inefficiency; The drilling rod frangible, spy discharges water dangerous, the problem of methane gas crown drill, the utility model provides a kind of novel staged guidance type Noncoring drill bit; Not only overcome other Noncoring drill bit, penetration rate is slow, resistance is big, and the rig operating pressure increases drilling rod, the drilling rod frangible; The spy unsafe problems that discharges water, and when creeping into chi, the rock stratum is little to the drill bit resistance, and rate of penetration is fast; Steering capability is good, and boring is straight, and drilling rod is frangible not.Because ladder-effect, spy discharges water when creeping into, high pressure water, and the pressure that drilling tool is produced reduces, so safety.Because ladder-effect, the high pressure methane gas can not produce the problem of crown drill to drilling tool.

The utility model solves its technical problem, and the technical scheme of employing is:

Staged guidance type Noncoring drill bit is by prosthomere, is joint, periproct and individual layer fin, and double-deck staged fin is formed.Prosthomere is processed with round steel, and the core shift shape is processed in the end, and is processed into the core shift water hole, and the processing groove is convenient to weld 3 in carbide alloy, and 2 block weldings are used on the opposite.Middle joint, periproct process with the heavy wall geologic drilling rod.Individual layer fin and double-deck staged fin, with the processing of heavy wall geology tubing, the processing notch is processed association's face simultaneously.Also can process, but fin and middle joint, periproct solder side processing circular arc grooved is convenient to firm welding with steel plate, straight.Prosthomere, middle joint, periproct screwed connection in order.Joint afterbody during individual layer fin association face is welded on.Double-deck staged fin is assisted face, welding periproct afterbody.Brill is welded on individual layer fin and double-deck staged fin notches with carbide alloy during than incompetent bed, and prosthomere end face groove welds carbide alloy equally and becomes the core shift shape.Brill is welded on individual layer and double-deck staged groove the inside with diamond compact (PDC) during than hard formation, the prosthomere end face, and groove welds diamond compact equally and becomes the core shift shape.When boring solid rock, with the diamond sintering at the individual layer fin with above the double-deck staged fin.Sintering becomes the core shift shape at the prosthomere end face.So just be processed into carbide alloy staged guidance type Noncoring drill bit.Diamond compact (PDC) staged guidance type Noncoring drill bit.Diamond staged guidance type Noncoring drill bit.3 kinds of staged guidance type Noncoring drill bits that hard material is different.During rotary drilling, because core shift, so there is not core, but base area homogenous rock stratum condition is rationally selected 3 species stage formula guidance type Noncoring drill bits for use.Adopt 3 individual layer fins, be uniformly distributed with, save on the afterbody in being welded on by 120 °.Adopt 4 two staged fins, be uniformly distributed with by 90 ° and be welded on the periproct afterbody.Simultaneously also can be by the aperture requirement, processing heavy caliber staged, the guidance type Noncoring drill bit, still, prosthomere, middle joint, periproct diameter increase, to satisfy the welding of multi-step multiple wing sheet.Drilling rod is connected with periproct when creeping into, when boring incompetent bed, and 3 individual layer fins of joint in the employing, 3 double-deck staged fin Noncoring drill bits of periproct creep into; This kind drill bit, the rock stratum reduces to minimum to the resistance of drill bit, and this moment, rate of penetration was fast; The rig operating pressure is little, drilling rod few power, not frangible.

The beneficial effect of the utility model is, bores centreless constantly, the small-bore rock stratum of creeping into earlier of prosthomere, the reaming of middle joint individual layer fin is crept into, then the double-deck staged fin of periproct step by step reaming creep into.This mode of creeping into, rig, drilling rod is laborsaving.Prosthomere and middle joint play the guiding role each other, middle joint not only with the double-deck ladder fin of periproct before but also play the guiding role, so boring is straight; Meet high pressure water when creeping into, during high methane gas, because ladder-effect; Can not produce big pressure to drilling tool, so safety, chi speed is fast during brill; Boring is straight, and drilling rod is frangible not.Staged guidance type Noncoring drill bit, rational in infrastructure, penetration rate is fast, and handling ease is easy to use, saves raw material.Many brill gas pumpings and extraction boring, many gas extractions gas makes full use of methane gas, simultaneously, reduces the harm to the mine and the person.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further specified:

Fig. 1 is the sketch map of the utility model.

Fig. 2 is the prosthomere sectional structural map, and 1 is the core shift water hole among the figure, the 2nd, and the core shift groove.

Fig. 3 is middle joint sectional drawing, and 1 is individual layer fin welding position among the figure.

Fig. 4 is the periproct sectional drawing, and 1 is double-deck staged fin welding position among the figure.

Fig. 5 is an individual layer fin processing sketch map, 1 groove among the figure, 2 association's faces.

Fig. 6 is double-deck staged fin processing sketch map, 1 groove among the figure, 2 notches among the figure, 3 association's faces among the figure.

1 is prosthomere in Fig. 1, the 2nd, and middle joint, the 3rd, individual layer fin, the 4th, periproct, the 5th, double-deck staged fin, the 6th, carbide alloy, the 7th, carbide alloy, the 8th, carbide alloy.

The specific embodiment

In Fig. 1, prosthomere (1), middle joint (2), periproct (4) is used screwed connection.

Shown in Figure 1, among the embodiment, individual layer fin (3) is uniformly distributed with the weldering knot at middle joint (2) afterbody by 120 °.

In the embodiment shown in fig. 1, double-deck staged fin (5) is uniformly distributed with the weldering knot at periproct (4) afterbody by 90 °.

In the embodiment shown in fig. 1, carbide alloy (6) welded steel double staged fin (5) groove the inside.

In the embodiment shown in fig. 1, carbide alloy (7) welding individual layer fin (3) groove the inside.

In the embodiment shown in fig. 1, carbide alloy (8) welding prosthomere (1) core shift groove the inside.

In Fig. 2, core shift water hole (1) groove (2) groove (3).

In embodiment illustrated in fig. 2,3 blocks of carbide alloy of groove (2) weldering become the core shift welding, 2 carbide alloy welding of opposed slot (3) weldering.

In embodiment illustrated in fig. 2, groove 2 grooves (3) weld diamond compact (PDC) according to geologic requirements.The sintering diamond.

In Fig. 3, individual layer fin, figure (5) welding position.

In Fig. 4, double-deck staged fin, figure (6) welding position.

In Fig. 5, notch (1), association's face (2).

In instance shown in Figure 5, notch (1) is according to geologic requirements weldering diamond compact (PDC), sintering diamond.

In Fig. 6, notch (1), notch (2), association's face (3).

Notch in instance shown in Figure 6 (1), notch (2) weld diamond compact, the sintering diamond according to geologic requirements.

Claims

1. staged guidance type Noncoring drill bit; Form by prosthomere, middle joint, periproct, carbide alloy, comprise individual layer fin (3), double-deck staged fin (5) in it is characterized in that forming; Carbide alloy (7) is welded on the individual layer fin (3); Carbide alloy (6) is welded on the double-deck staged fin (5), and 3 one group of carbide alloy (8) welding prosthomere (1) end face is formed the core shift shape for 2 one.

2. according to the said staged guidance type of claim 1 Noncoring drill bit, it is characterized in that by prosthomere (1), be that joint (2), periproct (4) are used screwed connection.

3. according to the said staged guidance type of claim 2 Noncoring drill bit, it is characterized in that the individual layer fin (3) in the middle joint (2) is welded into 120 ° respectively, the double-deck staged fin (4) in the middle joint (4) is welded into 90 ° respectively.