CN208364055U - A kind of cutter type drill bit for oil exploitation - Google Patents

Abstract

The utility model discloses a kind of cutter type drill bit for oil exploitation, including limited block, connecting column, internal thread hole, terminal pad, rectangular channel, blend scraping blade, cutting tooth, gear wheel, carbide button block, drill bit shell, nozzle, connecting sleeve, limiting slot, riffled tube and clamping screw.The utility model is arranged four by the side wall in drill bit shell and blends scraping blade, after the gear wheel of leading portion destroys competent bed, it will be open further expansion by blending scraping blade, guarantee subsequent connecting rod, the entrance of other necessaries such as pipeline, the single-point for avoiding conventional drill bit, which is crushed, causes wound hole relatively narrower, subsequent connector enters slowly unsmooth, the case where causing oil exploitation efficiency to reduce, and by the way that connecting column and connecting sleeve interconnection is arranged in drill bit tail end, guarantee the dismounting and change for being convenient for drill bit, it is more convenient to replace compared to general screw connection structure, prevent bit damage from influencing the efficiency of entire recovery process.

Description

A kind of cutter type drill bit for oil exploitation

Technical field

The utility model relates to a kind of cutter type drill bit, specifically a kind of cutter type drill bit for oil exploitation belongs to Oil exploration equipment technical field.

Background technique

In drilling process, drill bit is the main tool of fractured rock, and wellbore is formed, one by drill bit fractured rock A wellbore forms fine or not, the length of time used, except the performance of characteristic and drill bit itself with drilled strata rock has outside the Pass, Degree is related for being mutually matched more between drill bit and stratum, and the reasonable selection of drill bit is comprehensive to raising rate of penetration, reduction drilling well Synthesis originally plays an important role.

Existing drill bit is when ground is goed deep into exploitation, due to structure or geology, it is easy to cause the exploitation surface of a wound It is smaller, so that the connector entrance after drill bit is more slow, centainly affect the production efficiency of petroleum, and conventional drill bit one As by the way of being threadedly coupled, be threadedly coupled to be used for a long time and be easy to cause stripped thread, and under normal circumstances due to rotating for a long time, Be threaded in it is more difficult when dismounting, once bit damage replacement be more troublesome.Therefore, a kind of use is proposed regarding to the issue above In the cutter type drill bit of oil exploitation.

Utility model content

The purpose of this utility model is that solve the above-mentioned problems and provides a kind of cutter for oil exploitation Drill bit.

The utility model is achieved through the following technical solutions above-mentioned purpose, a kind of cutter brill for oil exploitation Head including terminal pad and is fixedly connected on the drill bit shell on terminal pad top, and tooth is fixedly mounted in one end of the drill bit shell Wheel, the surface of the gear wheel are fixedly connected with carbide button block, and the side wall of the drill bit shell is fixedly connected with the one end for blending scraping blade, The top for blending scraping blade is fixedly connected with cutting tooth, and the side wall for blending scraping blade opens up rectangular channel, the drill bit shell Top end surface in the middle part of be communicated with the output end of nozzle, the nozzle is mounted in the inner cavity of drill bit shell, the terminal pad Bottom end is fixedly connected with connecting column, and the side wall of the connecting column is fixedly connected with limited block, the two sides connecting column of the limited block Surface offers internal thread hole, and the connecting column is overlapped in the inner cavity of connecting sleeve, and the intracavity sidewall of the connecting sleeve is opened Equipped with limiting slot, the limited block on the limiting slot and connecting column surface, which is intermeshed, to be connected, the side wall connection of the connecting sleeve Riffled tube is threadedly coupled clamping screw in the inner cavity of the riffled tube, and the clamping screw is extended to across riffled tube In the internal thread hole on connecting column surface.

Preferably, there are four the numbers of the limited block, and four limited blocks are evenly distributed on the side wall of connecting column.

Preferably, the number of the limiting slot is four, and four limiting slots are evenly distributed on the lumen side of connecting sleeve On wall, and four limiting slots are a kind of inner cavity size structure and the consistent rectangular channel of standoff features.

Preferably, the number for blending scraping blade is four, and four sides for blending scraping blade are uniformly fixed on outside drill bit On the side wall of shell.

Preferably, the cross section diameter of the connecting column and the cross sectional inner diameter of connecting sleeve are in the same size.

Preferably, internal thread hole and clamping screw are in same upright position when the connecting column and connecting sleeve are mutually socketed On.

The beneficial effects of the utility model are:

1, the utility model is arranged four by the side wall in drill bit shell and blends scraping blade, leading portion gear wheel by hard rock After damage layer, will be open further expansion by blending scraping blade, guarantee other necessaries such as subsequent connecting rod, pipeline into Enter, the single-point for avoiding conventional drill bit, which is crushed, causes wound hole relatively narrower, and subsequent connector entrance is slowly unsmooth, and petroleum is caused to open Adopt the case where efficiency reduces；

2, by the way that connecting column and connecting sleeve interconnection is arranged in drill bit tail end, the dismounting and change of drill bit is convenient in guarantee, It is more convenient to replace compared to general screw connection structure, it is not easy to which outlet connects stripped thread, prevents bit damage from influencing entire The production efficiency of recovery process.

Detailed description of the invention

Fig. 1 is the utility model drill bit shell mechanism schematic diagram；

Fig. 2 is the utility model overlooking structure diagram；

Fig. 3 is the utility model connecting sleeve structural schematic diagram；

Fig. 4 is the utility model overall structure diagram.

In figure: 1, limited block, 2, connecting column, 3, internal thread hole, 4, terminal pad, 5, rectangular channel, 6, blend scraping blade, 7, cutting Tooth, 8, gear wheel, 9, carbide button block, 10, drill bit shell, 11, nozzle, 12, connecting sleeve, 13, limiting slot, 14, riffled tube, 15, clamping screw.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

It please refers to shown in Fig. 1-4, a kind of cutter type drill bit for oil exploitation, including terminal pad 4 and is fixedly connected Gear wheel 8 is fixedly mounted in drill bit shell 10 on 4 top of terminal pad, one end of the drill bit shell 10, and the surface of the gear wheel 8 is solid Surely it is connected with carbide button block 9, the side wall of the drill bit shell 10 is fixedly connected with the one end for blending scraping blade 6, the scraping blade 6 that blends Top is fixedly connected with cutting tooth 7, and the side wall for blending scraping blade 6 opens up rectangular channel 5, the wound broken off for expanding gear wheel 8 Mouthful, the output end of nozzle 11 is communicated in the middle part of the top end surface of the drill bit shell 10, the nozzle 11 is mounted on drill bit shell In 10 inner cavity, the bottom end of the terminal pad 4 is fixedly connected with connecting column 2, and the side wall of the connecting column 2 is fixedly connected with limited block 1, the surface of the two sides connecting column 2 of the limited block 1 offers internal thread hole 3, and the connecting column 2 is overlapped on connecting sleeve 12 In inner cavity, the intracavity sidewall of the connecting sleeve 12 offers limiting slot 13, the limit of the limiting slot 13 and 2 surface of connecting column The intermeshing connection of block 1, the side wall of the connecting sleeve 12 are connected to riffled tube 14, screw thread in the inner cavity of the riffled tube 14 Clamping screw 15 is connected, the clamping screw 15 passes through riffled tube 14 and extends in the internal thread hole 3 on 2 surface of connecting column, just It is installed in the replacement of drill bit.

As a kind of technical optimization scheme of the utility model, there are four the numbers of the limited block 1, and four limited blocks 1 is evenly distributed on the side wall of connecting column 2, realizes the function of being easily installed replacement.

As a kind of technical optimization scheme of the utility model, the number of the limiting slot 13 is four, and four limits Slot 13 is evenly distributed on the intracavity sidewall of connecting sleeve 12, and four limiting slots 13 are a kind of inner cavity size structure and limited block The consistent rectangular channel of 1 structure realizes the function of being easily installed replacement.

As a kind of technical optimization scheme of the utility model, the number for blending scraping blade 6 is four, and four blend The side of scraping blade 6 is uniformly fixed on the side wall of drill bit shell 10, the wound broken off for expanding gear wheel 8.

As a kind of technical optimization scheme of the utility model, the cross section diameter and connector sleeve of the connecting column 2 The cross sectional inner diameter of pipe 12 is in the same size, convenient for the connection of connecting column 2 and connecting sleeve 12.

As a kind of technical optimization scheme of the utility model, the connecting column 2 is interior when being mutually socketed with connecting sleeve 12 Threaded hole 3 and clamping screw 15 realize the function of the locking connecting column 2 of clamping screw 15 on same upright position.

When the utility model is used, one end of connecting sleeve 12 to be fixedly connected on to the end of exploitation shaft, will connect Column 1 is pushed into the inner cavity of connecting sleeve 12, and limited block 1 is overlapped in limiting slot 13, prevents connecting column 2 in connecting sleeve 12 Rotation is extended to one end of clamping screw 15 in internal thread hole 3 by rotation clamping screw 15, realize connecting column 1 with connect The locking of casing 12 blends scraping blade 6 by 10 side wall of drill bit shell in bit exploitation, is crushed to leading portion gear wheel 8 Rock stratum wound hole is further crushed, and by blending the cutting tooth 7 of 6 one end of scraping blade, to this body structure and has certain damage Rock stratum further cut, itself broken rock stratum is expanded by blend scraping blade 6, guarantees connector more Good entrance.

It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new The range of type is indicated by the appended claims rather than the foregoing description, it is intended that by fall in claim containing with important document All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting Related claim.

In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiments being understood that.

Claims (6)

1. a kind of cutter type drill bit for oil exploitation including terminal pad (4) and is fixedly connected on terminal pad (4) top Drill bit shell (10), it is characterised in that: gear wheel (8) are fixedly mounted in one end of the drill bit shell (10), the table of the gear wheel (8) Face is fixedly connected with carbide button block (9), and the side wall of the drill bit shell (10) is fixedly connected with the one end for blending scraping blade (6), described The top for blending scraping blade (6) is fixedly connected with cutting tooth (7), and the side wall for blending scraping blade (6) opens up rectangular channel (5), described The output end of nozzle (11) is communicated in the middle part of the top end surface of drill bit shell (10), the nozzle (11) is mounted on drill bit shell (10) in inner cavity, the bottom end of the terminal pad (4) is fixedly connected connecting column (2), and the side wall of the connecting column (2) is fixedly connected Have limited block (1), the surface of the two sides connecting column (2) of the limited block (1) offers internal thread hole (3), the connecting column (2) It is overlapped in the inner cavity of connecting sleeve (12), the intracavity sidewall of the connecting sleeve (12) offers limiting slot (13), the limit Position slot (13) and the limited block (1) on connecting column (2) surface, which are intermeshed, to be connected, spiral shell in the side wall connection of the connecting sleeve (12) Line pipe (14) is threadedly coupled clamping screw (15) in the inner cavity of the riffled tube (14), and the clamping screw (15) passes through interior Screwed pipe (14) extends in the internal thread hole (3) on connecting column (2) surface.

2. a kind of cutter type drill bit for oil exploitation according to claim 1, it is characterised in that: the limited block (1) there are four numbers, and four limited blocks (1) are evenly distributed on the side wall of connecting column (2).

3. a kind of cutter type drill bit for oil exploitation according to claim 1, it is characterised in that: the limiting slot (13) number is four, and four limiting slots (13) are evenly distributed on the intracavity sidewall of connecting sleeve (12), and four limits Position slot (13) is a kind of inner cavity size structure and the consistent rectangular channel of limited block (1) structure.

4. a kind of cutter type drill bit for oil exploitation according to claim 1, it is characterised in that: described to blend scraping blade (6) number is four, and four sides for blending scraping blade (6) are uniformly fixed on the side wall of drill bit shell (10).

5. a kind of cutter type drill bit for oil exploitation according to claim 1, it is characterised in that: the connecting column (2) cross section diameter and the cross sectional inner diameter of connecting sleeve (12) are in the same size.

6. a kind of cutter type drill bit for oil exploitation according to claim 1, it is characterised in that: the connecting column (2) internal thread hole (3) and clamping screw (15) are on same upright position when being mutually socketed with connecting sleeve (12).