CN203403825U - Assembly type coreless drill bit - Google Patents

Abstract

The utility model provides an assembly type coreless drill bit of fast drilling speed and good guiding performance, which is used for all non-coring drilling movements during the pumping, venting, tapping and discharging operation of gas, the fire extinguishing operation, the water detecting and draining operation and the like in an underground coal mine. The assembly type coreless drill bit can also be used for all non-coring drilling movements in the fields of ground engineering, petroleum engineering, underground heat engineering, well engineering, coal bed gas production, shale gas production and the like. According to the technical scheme of the utility model, the assembly type coreless drill bit is composed of five segments, wherein a single-layer fin is assembled in the second segment thereof and a double-layer stepped fin is assembled in the fourth segment thereof. Every two adjacent segments are connected together by means of screw threads. Meanwhile, both the single-layer fin and the double-layer stepped fin are fixed. The first segment is machined to be an eccentric water hole and the core shift part of the drill bit is made of hard materials. During the drilling process, a small-diameter hole is drilled firstly and then the hole is reamed step by step by means of the single-layer fin and the double-layer stepped fin. Meanwhile, four surfaces in a surface-in-surface manner are formed at the bottom of the hole during the drilling process. In this way, due to the adoption of the above drilling manner, the assembly type coreless drill bit is fast in footage. When the hard part of the assembly type coreless drill bit is worn out, the drill bit can still be used for a long time only through replacing the single-layer and double-layer fins and the first segment thereof with new ones. Therefore, the assembly type coreless drill bit is reasonable in design and the consumption of raw materials is saved. Meanwhile, the comprehensive benefit of the drilling industry is improved.

Description

Packaging Noncoring drill bit

Technical field

The utility model relates to the Noncoring drill bit of drilling use.For the extraction of coal mine gas gas and extraction, to release and discharge, fire extinguishing, visits the boring of not corings such as discharging water, is also adapted to ground oil, underground heat, the boring that centreless drills such as coal bed gas is adopted, and shale gas is adopted, engineering.

Background technology

At present, probing does not need to get the Noncoring drill bit that core is used, drill bit as comprehensive in diamond, diamond compact (PDC) concave Noncoring drill bit, three wings scrape type Noncoring drill bit, the problem existing is, drill bit cuts rock comprehensively, and resistance is large, speed is slow, rig feed pressure increases simultaneously, and 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, while meeting high pressure methane gas, crown drill phenomenon easily occurs.Hard material, comprises carbide alloy, diamond compact (PDC), and after Diamond Wear, whole bit body is scrapped, and greatly, drilling cost increases in waste.

Summary of the invention

The utility model will solve above technical problem: a kind of Novel assembling Noncoring drill bit is provided, not only overcomes above problem, and it is fast to creep into chi, resistance is little, and drilling rod is frangibility not.Due to ladder-effect, the pressure that high pressure water produces drilling tool reduces, so safety, methane gas can not produce the phenomenon of crown drill to drilling tool.After the wearing and tearing of hard material, just change the 1st joint, individual layer fin and Double-ladder type fin just can creep into chi, have prevented wasting phenomenon, have saved raw material, and applying unit is saved cost simultaneously.

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

Packaging Noncoring drill bit, by the main drill body of the 1st joint, 1 reaming body of the 2nd joint, the 3rd joint transition segment, 2 reaming bodies of the 4th joint and the 5th joint periproct screw thread are connected to form, and also comprise individual layer fin, Double-ladder type fin.Individual layer vane cluster is contained in 1 reaming body of the 2nd joint, and Double-ladder type vane cluster is contained in 2 reaming bodies of the 4th joint.Often save high quality round bar processing.Main drill body end face processing groove mouth, processing core shift water hole.The 1st joint is fixed fin with the 3rd joint, the 5th joint.Above the 2nd joint, 3 rectangle grooves of milling become 120 ° uniform, upper 4 the rectangle grooves of facing cut of the 4th joint are in 90 ° uniform, maybe can process dovetail groove.Every 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 be processed dovetail groove, single double fins processing dovetail fin.Prosthomere end face hard material becomes core shift shape, centreless while creeping into while making.

The utility model beneficial effect is: centreless while creeping into, prosthomere slim hole drilling, the 2nd joint, the 4th joint fin reaming are crept into, this mode forms 4 scope of freedoms at the bottom of hole, and resistance is little, and the 1st joint play the guiding role while creeping into, the 2nd joint leads mutually with the 3rd joint, boring is straight, and drilling tool is laborsaving, not frangibility and bending.Under the effect of the ladder wing, meet high pressure water, when gas pressure is large, can not produce large resistance 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 use for a long time, just change prosthomere, single, double fin just can creep into, applying unit is saved cost, saves a large amount of raw material.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further illustrated:

Fig. 1 is assembling Noncoring drill bit schematic diagram of the present utility model.Fig. 2 is the main drill body constructional drawing of the 1st joint.Fig. 2-1 is main drill body sectional view, one end light face, inner eye car button, middle water hole.Fig. 2-2 are the cross-sectional drawing of main drill body, and 12,13 is groove, the inside weldering knot hard material, and 11 is core shift water hole.Fig. 3 is the 2nd merism figure, and Fig. 3-1 is 1 reaming body sectional view, and Fig. 3-2 are 1 reaming body cross-sectional drawing, 15 for rectangle groove or dovetail groove become 120 ° uniform, assembling individual layer rectangle fin or individual layer dove-tail form fin in groove.14 water holes; Fig. 4 is the 3rd joint transition segment sectional structural map, middle water hole; In figure, 16 is light face, inner eye car button, light appearance be fastening two ends individual layer rectangle fin or individual layer dove-tail form fin, the fastening Double-ladder rectangle of the other end or Double-ladder dove-tail form fin, Fig. 5 is 2 reaming body constructional drawings of the 4th joint; Fig. 5-1 is 2 reaming body sectional views; Fig. 5-2 are 2 reaming body cross-sectional drawings; 17 water holes; 18 is that rectangle groove or dovetail groove are in 90 ° uniform.Fig. 6 is the 5th joint periproct sectional structural map, intermediate throughholes, and water flowing is used.In figure, 19 is light face, inner eye car button, light appearance be fastening, Double-ladder rectangle fin or double-deck dove-tail form fin.Fig. 7 is individual layer rectangle fin or individual layer dove-tail form fin processing diagrammatic elevation view; Fig. 7-1 is elevation, and 20 is groove, the inside weldering knot hard material.Fig. 7-2 are lateral view; 21, the 22nd, above end side, fixture block plays fixedly individual layer rectangle fin or individual layer dove-tail form fin.Fig. 8 is Double-ladder rectangle fin or Double-ladder type dove-tail form fin processing diagrammatic elevation view.Fig. 8-1 is elevation, and 25 is groove, and 26 is groove mouth, welding hard material in groove, and Fig. 8-2 are lateral view, 23,24 is that above end side, fixture block plays fixedly Double-ladder rectangle fin or double-deck dove-tail form fin.In Fig. 1 schematic diagram, (1) (2) (3) are hard material, (4) be Double-ladder rectangle fin or Double-ladder dove-tail form fin, (5) be individual layer rectangle fin or individual layer dove-tail form fin, (6) be the main drill body of the 1st joint, (7) be that the 2nd joint is 1 reaming body, 3 rectangle grooves or dovetail groove become 120 ° uniform, (8) be the 3rd joint, for transition segment, play fixedly individual layer rectangle fin or individual layer dove-tail form fin and Double-ladder rectangle fin, the effect of Double-ladder dove-tail form fin, (9) be 2 reaming body the 4th joints, 4 rectangle grooves or dovetail groove are in 90 ° uniform, (10) for periproct the 5th joint one end is played fixedly Double-ladder rectangle fin or Double-ladder dove-tail form fin and is connected other end drilling rod.

The specific embodiment

As shown in Figure 1, (6) are the main drill body of the 1st joint, and (7) are 1 reaming body of the 2nd joint, and (8) are the 3rd joint transition segment, and (9) are 2 reaming bodies of the 4th joint, and (10) are the 5th joint periproct.Every joint screwed connection, as shown in Figure 1 on 1 reaming body (7), 3 rectangle grooves or dovetail groove become 120 ° uniform, Fig. 7 individual layer rectangle fin or individual layer dove-tail form vane cluster are contained in the inside.As shown in Figure 1, upper 4 the rectangle grooves of 2 reaming bodies (9) or dovetail groove are in 90 ° uniform, and the double-deck rectangle fin of Fig. 8 or Double-ladder dove-tail form fin, be assembled in the inside.As shown in Figure 1, (1) (2) (3) are hard material, comprise carbide alloy, diamond compact, and diamond, (2) (3) are weldering knot hard material in groove mouth groove as shown in Figure 2, (11) are core shift water hole.As shown in Figure 3 (15) for rectangle groove or dovetail groove become 120 ° uniform.14 is water hole.As shown in Figure 4, (16) are car button light face not, inner eye car button.(18) 4 rectangle grooves or dovetail groove are in 90 ° uniform as shown in Figure 5, and (17) are water hole.As shown in Figure 7, (20) be groove weldering knot hard material, (21) in (22) end side, fixture block is assembled in Fig. 3, in 1 reaming body, (25) are notch as shown in Figure 8, and (26) are groove, weldering knot hard material in groove, (23) (24) are that in end side, fixture block is assembled in Fig. 5, in 2 reaming bodies.

Claims (4)

1. a packaging Noncoring drill bit, by the main drill body of the 1st joint, 1 reaming body of the 2nd joint, the 3rd joint transition segment, 2 reaming bodies of the 4th joint and the 5th joint periproct screwed connection, also comprise individual layer fin (5) Double-ladder type fin (4); Individual layer vane cluster is contained in 1 reaming body groove of the 2nd joint, and Double-ladder type vane cluster is contained in 2 reaming body grooves of the 4th joint.

2. packaging Noncoring drill bit according to claim 1, the 2nd joint reaming 3 rectangle grooves of body processing or dovetail groove milling to escape place, become 120 ° uniform.

3. packaging Noncoring drill bit according to claim 1, the 4th joint reaming 4 rectangle grooves of body processing or dovetail groove milling are in 90 ° uniform to escape place.

4. packaging Noncoring drill bit according to claim 1, individual layer fin (5) Double-ladder fin (4) is processed into rectangle or dove-tail form.

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