CN210659965U

CN210659965U - Oil drill pipe based on mortise and tenon structural design

Info

Publication number: CN210659965U
Application number: CN201920740354.8U
Authority: CN
Inventors: 曲路路; 黄志强; 张静娴
Original assignee: Yangtze University
Current assignee: Yangtze University
Priority date: 2019-05-22
Filing date: 2019-05-22
Publication date: 2020-06-02
Anticipated expiration: 2029-05-22

Abstract

The utility model provides an oil drill pipe based on mortise and tenon structural design, including the pipe wall, the pipe wall lateral surface of oil drill pipe one end is equipped with the tenon, oil drill pipe other end pipe wall medial surface is equipped with the tongue-and-groove, and the tenon includes outer shoulder, and edge pipe wall circumference evenly distributed has a plurality of lugs on the outer shoulder, and the tongue-and-groove includes interior shoulder, has a plurality of recesses along pipe wall circumference evenly distributed on the interior shoulder, the lug is unanimous with the quantity of recess. The drill rod can not only accelerate the drilling speed and prolong the service life of the drill bit, but also realize the bidirectional drilling of the drill bit in the drilling process.

Description

Oil drill pipe based on mortise and tenon structural design

Technical Field

The utility model relates to an oil drilling and production engineering well drilling technical field, in particular to oil drill pipe based on mortise and tenon structural design.

Background

With the development of society, the demand of petroleum in industry, agriculture, transportation and daily life is increasing day by day. Has become an indispensable energy source for people to live, and the exploration and development work of petroleum also becomes more important. In the process of petroleum exploration and development, the use cost in the drilling operation process accounts for more than half of the total cost, the most important in the drilling operation is the drilling speed problem, and the economic benefit is directly influenced by the drilling speed. However, there are many factors restricting the increase of the drilling speed at present, and how to greatly increase the drilling speed becomes a problem to be solved urgently. Therefore, people need to concentrate on the optimization of the drilling technology and continuously innovate, thereby achieving the purposes of improving the drilling speed and saving the cost.

The drill bit is used as a main drilling tool in the drilling process, the tooth abrasion condition and the service life of the drill bit have important influence on the drilling speed in the drilling process, and the drill bit rotates unidirectionally in the drilling process, so that teeth are difficult to grab into a stratum after being abraded to a certain degree, and the drilling speed is reduced. This application courage innovation has designed a drilling rod screw thread and has realized the two-way rotation of in-process drill bit, and drill bit efficiency greatly increased has also accelerated the drilling rate simultaneously.

SUMMERY OF THE UTILITY MODEL

The drilling rate that brings to prior art well drill bit tooth wearing and tearing condition reduces the problem, the utility model provides a petroleum drill rod based on mortise and tenon structural design not only can accelerate drilling rate through this drilling rod, prolongs the drill bit life-span, can realize creeping into the in-process drill bit two-way drilling moreover and move.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an oil drill pipe based on mortise and tenon structural design comprises a pipe wall, wherein a tenon is arranged on the outer side surface of the pipe wall at one end of the oil drill pipe, a mortise is arranged on the inner side surface of the pipe wall at the other end of the oil drill pipe, the tenon comprises an outer shoulder surface, a plurality of convex blocks are uniformly distributed on the outer shoulder surface along the circumferential direction of the pipe wall, the mortise comprises an inner shoulder surface, a plurality of grooves are uniformly distributed on the inner shoulder surface along the circumferential direction of the pipe wall, and the number of the convex blocks is consistent with that of the grooves; the groove comprises a first channel, a second channel and a clamping groove, two ends of the second channel are respectively communicated with the first channel and the clamping groove, the bottom of the first channel is communicated with the second channel, and the middle of the clamping groove is communicated with the second channel.

Further, in the above technical solution, the top surface of the bump is a plane, and the bottom surface of the groove is a plane.

Further, in the above technical solution, the width L of the first channel_7-1Is greater than the first side length L of the convex block_5-1Width L of the second channel_7-2Second side length L greater than the projection_5-2Width L of the slot_7-3-1Is greater than the first side length L of the convex block_5-1Length L of the slot_7-3-2Is greater than the width L of the second channel_7-2。

Furthermore, in the above technical solution, the length L of the slot is equal to or less than the length L of the slot_7-3-2A second side length L of the projection _5-22 times the width L of the second channel_7-2The sum of (a) and (b).

Compared with the prior art, the beneficial effects of the utility model are that: the drill rod provided by the utility model can realize the forward and reverse rotation of the drill bit, and fills the blank that the drill bit can not rotate forward and reversely in the current petroleum industry; in addition, the drill bit rotates positively and negatively, so that the phenomenon that the drilling speed is reduced due to the fact that the teeth of the drill bit are cut and abraded in one direction can be reduced, the drilling speed is improved, and the cost is saved.

Drawings

FIG. 1 is a top view of a tenon end of a drill stem according to an embodiment of the present invention;

FIG. 2 is a schematic view of the cross-sectional structure A-A in FIG. 1;

FIG. 3 is a schematic view of the tenon end of the drill rod of FIG. 1 being laid flat along the outer side of the axially sectioned pipe wall;

FIG. 4 is a top view of a drill rod tongue and groove end according to an embodiment of the present invention;

FIG. 5 is a schematic view of the cross-sectional structure B-B in FIG. 4;

FIG. 6 is a schematic view of the drill rod mortise end of FIG. 4 being split along the axial direction of the pipe wall and the inner side being laid flat;

fig. 7 is an enlarged schematic view of a bump and a groove according to an embodiment of the present invention, (in the figure, (a) is a schematic view of the bump, and (b) is a schematic view of the groove);

FIG. 8 is a schematic view of two combinations between drill rods according to an embodiment of the present invention;

in the figure, 1: tube wall, 2: tenon, 3: tongue and groove, 4: outer shoulder surface, 5: bump, 6: inner shoulder surface, 7: groove, 7-1: first channel, 7-2: second channel, 7-3: a clamping groove.

Detailed Description

The present invention will be further explained with reference to the drawings and examples, and it should be noted that the following description is for explaining the present invention and is not intended to limit the present invention.

As shown in fig. 1 to 6, an oil drill rod based on mortise and tenon structural design comprises a pipe wall 1, a tenon 2 is arranged on the outer side surface of the pipe wall 1 at one end of the oil drill rod, a mortise 3 is arranged on the inner side surface of the pipe wall 1 at the other end of the oil drill rod, the tenon 2 comprises an outer shoulder surface 4, a plurality of bumps 5 are uniformly distributed on the outer shoulder surface 4 along the circumferential direction of the pipe wall, the mortise 3 comprises an inner shoulder surface 6, a plurality of grooves 7 are uniformly distributed on the inner shoulder surface 6 along the circumferential direction of the pipe wall, each groove 7 comprises a first channel 7-1, a second channel 7-2 and a clamping groove 7-3, wherein two ends of the second channel 7-2 are respectively communicated with the first channel 7-1 and the clamping groove 7-3, the bottom of the first channel 7-1 is communicated with the second channel 7-2, and the middle part of. The number of the projections 5 is equal to that of the grooves 7, and further, the number of the projections and the grooves is 2 or more, and in this embodiment, the number thereof is 4. The top surface of the projection 5 is a plane, the bottom surface of the groove 7 is a plane, and the projection 5 can slide in the groove 7. The depth of the groove 7 is greater than or equal to the height of the bump 5, and preferably, the depth of the groove 7 is consistent with the height of the bump 5.

To ensure that the projection 5 can slide in the groove 7, the first channel 7-1 has a width L as shown in FIG. 3_7-1Slightly larger than the first edge length of the bump 5, further, L_7-1Less than or equal to L_5-11.1 times of; width L of second channel 7-2_7-2A second side length L slightly larger than the bump 5_5-2Further, L_7-2Less than or equal to L_5-21.1 times of; width L of slot 7-3_7-3-1Slightly longer than the first side length L of the bump 5_5-1Further, L_7-3-1Less than or equal to L_5-11.1 times of; length L of the slot 7-3_7-3-2Is greater than the width L of the second channel 7-2_7-2. Further, the length L of the slot 7-3_7-3-2A second side length L of the projection 5 or more_5-22 times the width L of the second channel 7-2_7-2The sum of (a) and (b).

When the tenon of the drill rod is manufactured, the thickness of the cut pipe wall is uniform and consistent on the outer shoulder surface except the convex block part, and the thickness is set to be h 1; when manufacturing the mortise of the drill rod, uniformly cutting off a pipe wall with a certain thickness from the inner side surface outwards to obtain an inner shoulder surface with the thickness of h2, and then forming a groove on the inner shoulder surface; wherein the sum of h1 and h2 is equal to the original drill pipe wall thickness.

In addition, in the above technical scheme, the lengths of the tenon and the mortise along the axial direction of the drill rod are consistent so as to ensure better embedment.

In practical use, two ends of the drill rod can be connected with other drill rods with the same design by the following connection method: the convex block of the tenon is aligned to the first channel of the mortise, when the convex block is pushed to the bottom end, the convex block is rotated to slide into the second channel and finally enter the clamping groove from the second channel, and at the moment, the joint of the two drill rods is pushed or pulled to enable the convex block to enter the two ends of the clamping groove, so that the connection between the drill rods can be realized.

During drilling, after the drill pipe is connected, the drill pipe is lifted, and the lug is tightly clamped at the lower end of the clamping groove as shown in (a) of fig. 8, so that the drill pipe is lifted. And (b) placing the single in the shaft, slowly placing the single in the shaft after connection, and tightly clamping the convex block at the upper end of the clamping groove, as shown in fig. 8. Therefore, the forward and reverse rotation of the drill rod is realized, and the forward and reverse rotation of the drill bit is further realized.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.

Claims

1. An oil drill pipe based on mortise and tenon structural design comprises a pipe wall (1) and is characterized in that a tenon (2) is arranged on the outer side face of the pipe wall (1) at one end of the oil drill pipe, a mortise (3) is arranged on the inner side face of the pipe wall (1) at the other end of the oil drill pipe, the tenon (2) comprises an outer circular bead surface (4), a plurality of convex blocks (5) are uniformly distributed on the outer circular bead surface (4) along the circumferential direction of the pipe wall, the mortise (3) comprises an inner circular bead surface (6), a plurality of grooves (7) are uniformly distributed on the inner circular bead surface (6) along the circumferential direction of the pipe wall, and the number of the convex blocks (5) is consistent with that;

the groove (7) comprises a first channel (7-1), a second channel (7-2) and a clamping groove (7-3), two ends of the second channel (7-2) are respectively communicated with the first channel (7-1) and the clamping groove (7-3), the bottom of the first channel (7-1) is communicated with the second channel (7-2), and the middle of the clamping groove (7-3) is communicated with the second channel (7-2).

2. The oil drill pipe designed based on the mortise and tenon structure as claimed in claim 1, wherein the top surface of the projection (5) is a plane, and the bottom surface of the groove (7) is a plane.

3. The oil drill pipe designed based on the mortise and tenon structure as claimed in claim 2, wherein the depth of the groove (7) is greater than or equal to the height of the bump (5).

4. An oil drill pipe designed based on a mortise and tenon structure as claimed in claim 3, wherein the depth of the groove (7) is consistent with the height of the bump (5).

5. Oil drill pipe designed based on mortise and tenon structure according to claim 1, wherein the width L of the first channel (7-1)_7-1Is greater than the first side length L of the bump (5)_5-1Width L of said second channel (7-2)_7-2Is greater than the second side length L of the projection (5)_5-2The width L of the clamping groove (7-3)_7-3-1Is larger than the first side length L of the projection (5)_5-1The length L of the clamping groove (7-3)_7-3-2Is greater than the width L of the second channel (7-2)_7-2。

6. The oil drill pipe designed based on mortise and tenon structure as claimed in claim 5, wherein the length L of the clamping groove (7-3)_7-3-2A second side length L of the projection (5) or more_5-22 times the width L of the second channel (7-2)_7-2The sum of (a) and (b).