CN102213078A

CN102213078A - Internal spiral nozzle with diversion trench

Info

Publication number: CN102213078A
Application number: CN2011101258695A
Authority: CN
Inventors: 刘展; 李军; 巴德军; 张粉宁; 刘雅蕾
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-16
Filing date: 2011-05-16
Publication date: 2011-10-12

Abstract

The invention discloses an internal spiral nozzle with a diversion trench, and the internal spiral nozzle is installed on a bit. At least more than two spiral diversion trenches are arranged on an internal spiral nozzle body, one end of the internal spiral nozzle body is connected with the bit through an external thread, the other end of the internal spiral nozzle body is inserted in the inner cavity of a bush, a spacing ring is arranged on the middle part of the excircle of the bush, and a spanner fastening groove is arranged on one end surface of the internal spiral nozzle body. The internal spiral nozzle is a general and replaceable hard alloy or ceramic internal spiral diversion trench nozzle for the bit, the internal spiral nozzle has the advantages that the cooling and lubricating effects are good, the damage of a bit clad sheet and gauge teeth can be reduced, the phenomenon that a rubber dough packs the bit is solved, the rotating bit nozzle can be prevented from wire-back stripping during a shaking process, the tooth protecting effect is good, the bit clad sheet and the gauge teeth can be prevented from being impacted by gravel, the fluid speed is improved, the sand carrying capacity is good, the pumping pressure of ground facilities is relieved. The internal spiral nozzle provided by the invention can be widely used for installing whole-section bits applied to the oil industry, the geologic prospecting industry, the coal mine industry, the railway industry, the underground engineering industry, the national defense industry and the like.

Description

A kind of inside spin nozzle with guiding gutter

Technical field

The present invention relates to the water under high pressure nozzle on the deep-well drill bit, be specifically related to a kind of inside spin nozzle with guiding gutter.

Background technology

On the PDC full-face drilling drill bit that existing oil exploration, oil drilling, coal mining use a kind of general, removable carbide alloy straight hole nozzle is arranged, (popular name: water is chewed or hydrophthalmia) is must join on the drill bit, its function: mainly be high-pressure slurry and the clear water that is used for spraying in creeping into, the installation position: PDC diamond full-face drilling drill bit is mainly concentrated drill bit top, the concave surface of the road wing.In oil exploration, oil drilling after having used the comprehensive Drilling bore bit of LBS sapphire spiral complex, finding to install this straight hole nozzle exists the high-pressure slurry that sprays from nozzle at a touch just to become dispersed in the rock stratum with water in drilling well is crept into, hard rock stratum is not had destructive power, and the mud that ejects in creeping into play in the shaft bottom take well defective of sand, cooling, lubrication.

Summary of the invention

The purpose of this invention is to provide a kind of simple in structure, easy for installation, general mutually, the removable a kind of inside spin nozzle of various drill bits with guiding gutter.

In order to overcome the deficiencies in the prior art, technical scheme of the present invention is to solve like this: a kind of special character with inside spin nozzle of guiding gutter is to have at least on this inside spin nozzle body two above spiral stream guidance grooves, described inside spin nozzle body one end is connected with drill bit by external screw thread, the other end is inserted into the lining inner chamber, described lining cylindrical middle part is provided with a spacing ring, has the spanner binding groove on the end face of described inside spin nozzle body.

The spacing ring of above-mentioned lining is conical, and there is chamfering at two ends, and an end is outer rounded corner, and an end is interior rounded corner, and the lining inner chamber is a light face straight hole.

Above-mentioned inside spin nozzle body is carbide alloy inside spin nozzle body or ceramic inside spin nozzle body.

The present invention compared with prior art, the inside spin nozzle has following characteristics:

(1), carbide alloy inside spin nozzle, the high-pressure slurry that ejects stream and current have certain helicity, there is centrostigma the moment of clashing into the rock stratum, and there is certain destructive power the rock stratum.

(2), in creep on the stratum of complexity, can prevent rubber cement parcel drill bit effectively, the high-pressure spiral fluid that ejects can stop rubber cement parcel drill bit not make drill bit lose the cutting function effectively.

(3), to protect tooth effective, the drill bit in preventing from effectively to creep into creeps into cobblestone at layer of gravel and blocks nozzle, slows down flow velocity, simultaneously, overcomes the high temperature that drill bit produces when dry grinding, makes the defective of composite sheet high temperature carbonization.

(4), the high-pressure fluid that sprays from the spiral nozzle, bump still remains with certain horizontal shear force behind the rock stratum, along with the fluid of the uninterrupted ejection of the rotation nozzle of drill bit improves the flow velocity of fluid in the shaft bottom at the volley greatly, take sand, cooling, lubricating ability with regard to enhance fluid further in the shaft bottom like this.

(5), drill bit ejects in the stratum fluid velocity increases, and alleviated pressure to ground installation far and away, the raising of fluid oneself circulation rate has also just more effectively improved rate of penetration.

(6), the drill bit nozzle in preventing from effectively to rotate moves back silk and threads off in vibrations.

(7), this inside spin nozzle is widely used in the full section drill bit that industries such as oil, geological prospecting, colliery, railway, underground construction, national defence use and installs and uses.

Description of drawings

Fig. 1 is the inside spin nozzle master TV structure schematic diagram with double helix guiding gutter of the present invention;

Fig. 2 is the plan structure schematic diagram of Fig. 1;

Fig. 3 is the inside spin nozzle master TV structure schematic diagram with triple helical guiding gutter;

Fig. 4 is the plan structure schematic diagram of Fig. 3;

Fig. 5 is the inside spin nozzle master TV structure schematic diagram with four spiral stream guidance grooves;

Fig. 6 is the plan structure schematic diagram of Fig. 5;

Fig. 7 is the main TV structure schematic diagram of lining;

Fig. 8 is the plan structure schematic diagram of Fig. 7;

Fig. 9 is a drill bit master TV structure schematic diagram;

Figure 10 is the structural representation of looking up of Fig. 9;

Figure 11 looks up structural representation for another of Fig. 9.

The specific embodiment

Accompanying drawing is embodiments of the invention.

Below in conjunction with accompanying drawing summary of the invention is described further:

With reference to Fig. 1, Fig. 2, Fig. 7, shown in Figure 8, at least have the spiral stream guidance groove 2 more than two on a kind of inside spin nozzle body 1 with guiding gutter, described inside spin nozzle body 1 one ends are connected with drill bit by external screw thread 3, the other end is inserted into lining 4 inner chambers, described lining 4 cylindricals middle part is provided with a spacing ring 5, has spanner binding groove 6 on the end face of described inside spin nozzle body 1.

The spacing ring 5 of above-mentioned lining 4 is a coned face, and there is chamfering at two ends, and an end is outer rounded corner, and an end is interior rounded corner, and its lining inner chamber is a light face straight hole.

Above-mentioned inside spin nozzle is carbide alloy inside spin nozzle body or ceramic inside spin nozzle body.

Embodiment 1

Fig. 1 is the inside spin nozzle master TV structure schematic diagram with 2 spiral stream guidance grooves 2;

Fig. 2 is the plan structure schematic diagram of Fig. 1.

Have spanner binding groove 6 on one end face of inside spin nozzle body 1.

Inside spin nozzle body is a carbide alloy inside spin nozzle.

Figure 9 shows that drill bit master TV structure schematic diagram, a plurality of horizontal inside spin nozzles are installed in the side of drill bit.

Figure 10 is equipped with the different inside spin nozzle 1 of size for the structural representation of looking up of Fig. 9 in the helicla flute of drill bit bottom surface.

Figure 11 looks up structural representation for another of Fig. 9, and the different inside spin nozzle 1 of size is installed in the helicla flute of drill bit bottom surface, and this nozzle bore is according to Different Strata, the different lithology design, and bore has plurality of specifications.

Embodiment 2

Fig. 3 is the inside spin nozzle master TV structure schematic diagram with 3 spiral stream guidance grooves 2.

Fig. 4 is the plan structure schematic diagram of Fig. 3.

Have spanner binding groove 6 on one end face of inside spin nozzle body 1.

Inside spin nozzle body is ceramic inside spin nozzle, and the nozzle arrangement is with embodiment 1.

Embodiment 3

Fig. 5 is the inside spin nozzle master TV structure schematic diagram with 4 spiral stream guidance grooves 2.

Fig. 6 is the plan structure schematic diagram of Fig. 5.

Have spanner binding groove 6 on one end face of inside spin nozzle body 1.

Inside spin nozzle body is carbide alloy or ceramic inside spin nozzle, and the nozzle arrangement is with embodiment 1.

Claims

1. inside spin nozzle with guiding gutter, it is characterized in that having at least on this inside spin nozzle body (1) the spiral stream guidance groove (2) more than two, described inside spin nozzle body (1) one end is connected with drill bit by external screw thread (3), the other end is inserted into lining (4) inner chamber, described lining (4) cylindrical middle part is provided with a spacing ring (5), has spanner binding groove (6) on the end face of described inside spin nozzle body (1).

2. a kind of inside spin nozzle with guiding gutter according to claim 1 is characterized in that the spacing ring (5) of above-mentioned lining (4) is coned face, and there is chamfering at two ends, and an end is outer rounded corner, and an end is interior rounded corner, and its lining inner chamber is a light face straight hole.

3. a kind of inside spin nozzle with guiding gutter according to claim 1 is characterized in that above-mentioned inside spin nozzle is carbide alloy inside spin nozzle body or ceramic inside spin nozzle body.