CN203285343U

CN203285343U - Seismic exploration compound drilling drill bit

Info

Publication number: CN203285343U
Application number: CN2013202313073U
Authority: CN
Inventors: 杨凤申; 刘坤; 胡博
Original assignee: China National Petroleum Corp; BGP Inc
Current assignee: China National Petroleum Corp; BGP Inc
Priority date: 2013-05-02
Filing date: 2013-05-02
Publication date: 2013-11-13
Anticipated expiration: 2023-05-02

Abstract

The utility model relates to a seismic exploration compound drilling drill bit, and belongs to the technical field of petroleum seismic exploration and coal field seismic exploration. According to the structure of an outer pipe assembly, an outer inner pipe is welded with an outer spiral piece, and the outer inner pipe is welded with an outer middle pipe and an outer pipe female joint. One end of the outer inner pipe is connected with an alloy drill bit, an alloy block is connected to the top end of the outer spiral piece, and two ball grooves are formed in the outer pipe female joint. According to the structure of an inner screw rod, an inner spiral piece is welded with an inner middle rod, the inner middle rod is welded with an inner rod bearing shaft and an inner ring, two ball grooves and two Glyd ring installing grooves are formed in the inner ring, and Glyd rings are connected in the Glyd ring installing grooves. An observation hole is formed in the outer middle pipe, a deep groove ball bearing is connected between the outer inner pipe and the inner rod bearing shaft, and the inner screw rod is connected with the outer pipe assembly through balls and set screws. The seismic exploration compound drilling drill bit has a crushing function and a skiving effect and solves the problems that in a spiral drilling process, if the drill bit drills an unconsolidated formation, drilling cuttings fall off and can not return upward, if the drill bit drills a sticky formation, gaps between the spiral pieces are blocked, and therefore drilling is difficult.

Description

A kind of seismic prospecting combined drilling drill bit

Technical field

The utility model relates to a kind of seismic prospecting combined drilling drill bit, belongs to oil seismic exploration, coal seismic prospecting technical field.

Background technology

It is the key link that improves the seismic acquisition imaging precision that loess tableland reaches the similarly assurance of layer region seismic prospecting drilling well depth of pore forming.Such area feature is: high slope, mountain is steep, and coombe spreads all over, and motor-driven drilling equipment can't be gone up a hill.And drought and water shortage, complex formation, soft or hard are alternately, and centre is mingled with mud, adhesive dried loess, rice glue mud and clay layer, so such regional exploration drilling is comparatively difficult.

Because lack of water can't adopt mud drilling technique; Therefore, generally adopt augers, core bit.The main problem that exists: 1 core drill well is met than hard formation and is got the obstruction of core mouth, can't get core; 2 spiral drilling wells are generally all augers, only have scraping action, and drilling efficiency is low, and the drilling cuttings upward velocity is slow.And auger stem is met gummy formation, and drilling cuttings stops up the helical blade gap, creeps into difficulty, meet the scall drilling cuttings and fall, can not on the problem returned.

At present, Huangtuyuan area seismic prospecting construction adopts artificial luoyang spades, with tactics of human sea, guarantees construction speed, but this instrument runs into constructional difficulties of slip stone or old stratum, the wellbore construction degree of depth can't guarantee, so the seismic acquisition imaging precision is affected.

Summary of the invention

In order to overcome the deficiencies in the prior art, the utility model provides a kind of seismic prospecting combined drilling drill bit.

A kind of seismic prospecting combined drilling drill bit, the structure of outer pipe assembly are outer inner tube and the welding of external spiral sheet, outer inner tube and outer middle pipe and outer tube female joint welding; One end of outer inner tube connects alloy bit; Alloy block is connected to the top of external spiral sheet; Outer tube female joint inside has the twice ball grooves; The structure of inside spin bar is inner screwy fin and the welding of interior king-rod, interior king-rod and interior rod bearing axle and inner ring welding; Inner ring has twice ball grooves and twice Glais ring mounting groove, connects Glais ring in the Glais ring mounting groove; Have peep hole on pipe in outer, be connected deep groove ball bearing between outer inner tube and interior rod bearing axle, the inside spin bar is connected by ball and holding screw with outer pipe assembly.

The utility model has the advantages that four aspects:

1, tool crushing function, have again scraping action;

2, outer pipe assembly and the design of inside spin bar forward and backward, increase the drilling cuttings relative velocity, returns in acceleration;

3, the chance scall drilling cuttings that solves in the spiral drilling well falls, can not on return; Meet gummy formation flight gap blocked, creep into the problem of difficulty;

4, reduced the scene that the conventional drilling drilling cuttings stirs up a cloud of dust; Alleviate the pollution to drilling implementer and equipment, be conducive to the raising of health and service life of equipment.

Description of drawings

When considered in conjunction with the accompanying drawings, by the detailed description with reference to following, can more completely understand better the utility model and easily learn wherein many advantages of following, but accompanying drawing described herein is used to provide further understanding of the present utility model, form a part of the present utility model, illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not form improper restriction of the present utility model, as figure wherein:

Fig. 1 is structural representation of the present utility model.

Fig. 2 is tower drill bit structure schematic diagram of the present utility model.

Fig. 3 is tower drill bit side structure schematic diagram of the present utility model.

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

The specific embodiment

Obviously, the many modifications and variations done based on aim of the present utility model of those skilled in the art belong to protection domain of the present utility model.

Embodiment 1: as shown in Figure 1, Figure 2, Figure 3 shows, a kind of seismic prospecting combined drilling drill bit, comprise outer tube female joint 1, outer middle pipe 2, external spiral sheet 3, alloy block 4, primary alloy drill bit 5, outer inner tube 6, interior rod bearing axle 7, interior king-rod 8, inner screwy fin 9, inner ring 10;

The structure of outer pipe assembly is outer inner tube 6 and 3 welding of external spiral sheet, and outer inner tube 6 is connected with outer middle pipe 2 and outer tube female joint 1, and an end of outer inner tube 6 connects alloy bit 5;

Outer tube female joint 1 inside has the twice ball grooves;

The structure of inside spin bar is inner screwy fin 9 and interior king-rod 8 welding, interior king-rod 8 and interior rod bearing axle 7 and inner ring 10 welding; Alloy block 4 is connected to the top of external spiral sheet 3,

Inner ring 10 has twice ball grooves and twice Glais ring mounting groove 12, connects Glais ring in Glais ring mounting groove 12;

Have peep hole on pipe 3 in outer, be connected deep groove ball bearing 13 between outer inner tube 6 and interior rod bearing axle 7, the inside spin bar is connected by ball and holding screw 11 with outer pipe assembly.

Outer tube female joint 1 is connected with the composite drill rod external pipe thread, and the upper end of the inner ring 10 of inside spin bar is outer four directions, with the interior quartet connection of the inside spin bar lower end of composite drill rod.

Alloy bit 5 has scraping, crushing function, alloy block 4 scrapings and addi-tional crusher, and outer pipe assembly dextrorotation, broken, scraping drilling well, drilling cuttings, along returning on the external spiral sheet, enters left-handed inside spin bar, along returning on inner screwy fin, until discharge well head.

Inside spin bar lower end is connected by deep groove ball bearing 13 with outer pipe assembly, the axiality between assurance, and rotate freely, upper end has the twice ball to connect, and between making, rotation is freely smooth; Glais ring plays sealing function.

Alloy bit 5 has fragmentation, scraping action, and alloy block is assisted scraping, fragmentation.

Fig. 2 is alloy bit 5 distressed structures of the present utility model, is fit to than the exploration drilling of hard formation, and the circumference of the bit body 14 of alloy bit 5 has alloy block 45 to distribute, and an end of bit body 14 is alloy bit 45.

, according to the different drill bit of strata condition design, replace alloy bit.

As mentioned above, embodiment of the present utility model is explained, but as long as not breaking away from fact inventive point of the present utility model and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, within such variation also all is included in protection domain of the present utility model.

Claims

1. seismic prospecting combined drilling drill bit, the structure that it is characterized in that outer pipe assembly are outer inner tube and the welding of external spiral sheet, and outer inner tube and outer middle pipe and outer tube female joint are welded; One end of outer inner tube connects alloy bit; Alloy block is connected to the top of external spiral sheet; Outer tube female joint inside has the twice ball grooves; The structure of inside spin bar is inner screwy fin and the welding of interior king-rod, interior king-rod and interior rod bearing axle and inner ring welding; Inner ring has twice ball grooves and twice Glais ring mounting groove, connects Glais ring in the Glais ring mounting groove; Have peep hole on pipe in outer, be connected deep groove ball bearing between outer inner tube and interior rod bearing axle, the inside spin bar is connected by ball and holding screw with outer pipe assembly.

2. a kind of seismic prospecting combined drilling drill bit according to claim 1, is characterized in that the circumference of the bit body of alloy bit has alloy block to distribute, and an end of bit body is alloy bit.