CN115234175A

CN115234175A - Ocean oil gas exploitation drilling rod

Info

Publication number: CN115234175A
Application number: CN202211151403.7A
Authority: CN
Inventors: 崔皎; 成德鑫; 王明; 秦向同
Original assignee: Shandong Wan Chuang Metal Technology Co ltd
Current assignee: Shandong Wan Chuang Metal Technology Co ltd
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2022-10-25
Anticipated expiration: 2042-09-21
Also published as: CN115234175B

Abstract

The invention discloses an ocean oil and gas exploitation drill rod which comprises a drill rod body, an injection assembly and a stirring assembly, wherein the drill rod body is used for drilling a well, the injection assembly is used for injecting a viscosity reducer into an oil well, so that the viscosity of crude oil can be reduced, the stirring assembly is used for stirring the crude oil and the viscosity reducer, so that the viscosity reducer is rapidly and uniformly distributed into the crude oil, and the viscosity reduction speed is improved. The drill rod body comprises a joint, a connecting rod and a drill bit, the connecting rod is fixedly connected to the lower end of the joint, and the drill bit is fixedly connected to the lower end of the connecting rod. The injection assembly comprises an injection channel and an injection piece, wherein the upper end of the injection channel is provided with an inlet which is communicated with the injection piece at least part of the time, and the lower end of the injection channel is provided with an outlet. The stirring assembly comprises a stirring blade, and the stirring blade is connected to the drill rod body or the injection assembly. The present invention can reduce the viscosity of crude oil, so that the crude oil does not obstruct the rotation of the drill bit.

Description

Ocean oil gas exploitation drilling rod

Technical Field

The invention belongs to the technical field of oil gas exploitation drill rods, and particularly relates to an ocean oil gas exploitation drill rod.

Background

With the gradual increase of resource demand, the development of marine oil and gas exploitation technology is also ongoing, wherein the marine oil and gas exploitation engineering mainly adopts drilling, the drill rod is an important component in the drilling by exploring and developing the information of marine oil and gas resources through the drilling, and the main work of the drill rod is to achieve the purpose of exploiting oil and gas by transmitting torque.

However, when the viscosity of crude oil is high, the resistance of the crude oil to the drill rod is increased, and the normal rotation of the drill bit is hindered. The viscosity reducer is difficult to be rapidly and uniformly distributed in the viscous crude oil by the conventional oil gas exploitation drill rod, and the viscosity of the crude oil is difficult to be rapidly reduced.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides an ocean oil and gas exploitation drill rod which has the advantages of enabling a viscosity reducer to be rapidly and uniformly distributed in viscous crude oil and rapidly reducing the viscosity of the crude oil, and solves the problem that the viscosity of the crude oil is difficult to rapidly reduce in the conventional viscous crude oil in which the viscosity reducer is difficult to be rapidly and uniformly distributed.

The invention is thus realized, an offshore oil and gas production drill pipe, comprising:

the drill rod body comprises a joint, a connecting rod and a drill bit, wherein the connecting rod is fixedly connected to the lower end of the joint, and the drill bit is fixedly connected to the lower end of the connecting rod;

the injection assembly comprises an injection channel and an injection piece, wherein the upper end of the injection channel is provided with an inlet which is communicated with the injection piece at least in part of time, and the lower end of the injection channel is provided with an outlet;

and the stirring assembly comprises a stirring blade, and the stirring blade is connected to the drill rod body or the injection assembly.

Preferably, the injection assembly comprises a fixed sleeve, the fixed sleeve is sleeved on the connecting rod, and the injection channel is arranged in the fixed sleeve;

the injection member comprises a liquid storage barrel, an injection pump and a first butt joint channel, wherein the inlet end of the injection pump is communicated with the liquid storage barrel through a pipeline, the outlet end of the injection pump is communicated with the first butt joint channel through a pipeline, and the first butt joint channel is communicated with the injection channel at least in part of time.

Preferably, the connecting rod is a rectangular rod, the cross section of the connecting rod is square, a first annular groove is formed in the connecting rod, a sleeving ring is slidably sleeved in the first annular groove, a first butt-joint channel is formed in the sleeving ring, and the lower end of the first butt-joint channel extends to the lower surface of the sleeving ring;

the upper surface of the fixing sleeve is flush with the lower surface of the first annular groove; the upper surface of the fixed sleeve is attached to the bottom surface of the sleeve joint ring, and the first butt joint channel can be aligned to the injection channel.

Preferably, the invention also comprises a fixedly arranged linear slideway; one side fixedly connected with second spliced pole of cover joint ring, the tip fixedly connected with slider of second spliced pole, slider sliding connection in the straight line slide.

Preferably, the injection assembly further comprises an injection pump; a second docking channel in the bell socket, the second docking channel aligned at least partially in time with the injection channel; and the output end of the air injection pump is communicated with the second butt joint channel through a connecting pipeline.

Preferably, the injection channel comprises a first sub-channel and a second sub-channel, the lower end of the first sub-channel is communicated with the upper end of the second sub-channel, and the diameter of the first sub-channel is smaller than that of the second sub-channel;

one side of fixed cover is rotated through the screw thread and is connected with locking screw, locking screw's one end extends to in the first subchannel, be connected with first spring on the locking screw, first spring is located in the first subchannel, the lower extreme fixedly connected with spheroid of first spring, the spheroid is located in the second subchannel, just the spheroid with the lower extreme laminating of first subchannel.

Preferably, the stirring blade is rotatably connected to the outer surface of the fixing sleeve through a rotating shaft, the rotating shaft is provided with a spring plate, one end of the spring plate is connected to the fixing sleeve, and the other end of the spring plate is connected to the stirring blade.

Preferably, the outlet is located below the side wall of the fixing sleeve, and the rotating shaft is located on one side of the outlet;

one side of the stirring blade is fixedly connected with a cover body, the cover body can be clamped into the outlet, and a second clamping groove is formed in one side of the cover body;

one side of the outlet, which is far away from the rotating shaft, is provided with an accommodating groove, a second spring is arranged in the accommodating groove, one end of the second spring is provided with a second clamping block matched with the second clamping groove, and one side of the second clamping block is provided with a first ramp;

the fixed sleeve is provided with a slide way, a transmission block is connected to the slide way in a sliding manner, one end of the transmission block extends into the second sub-channel and is located on the lower side of the ball body, and the other end of the transmission block is attached to the first ramp.

Preferably, a side of the second latch close to the cover has a second ramp.

Preferably, the stirring blade is internally provided with a first pipeline, one end of the first pipeline is communicated with the first sub-channel through a hose, the other end of the first pipeline is communicated with a second pipeline, the diameter of the second pipeline is larger than that of the first pipeline, and the other end of the second pipeline penetrates through the stirring blade;

the inner wall of the first pipeline is connected with a first piston in an attaching mode, and the inner wall of the second pipeline is connected with a second piston in an attaching mode;

the other end of the second piston is fixedly connected with an extension bar, and the extension bar can extend out of the second pipeline.

Compared with the prior art, the invention has the following beneficial effects:

the joint of the invention is connected with an external driving device (such as a driving shaft), the external driving device drives the joint to rotate, and the joint drives the connecting rod to rotate, so as to drive the drill bit to rotate and drill the oil well. When the viscosity of the crude oil is larger, the injection piece injects the viscosity reducer into the crude oil through the injection channel, so that the viscosity of the crude oil in the oil well is reduced. The stirring blade can stir the viscosity reducer, so that the viscosity reducer is quickly and uniformly distributed in the crude oil, and the viscosity of the crude oil is quickly reduced.

Drawings

FIG. 1 is a schematic structural view of a first perspective of an offshore oil and gas production drill pipe provided in embodiment 1 of the present invention;

FIG. 2 is a schematic sectional elevation view of a marine oil and gas production drill pipe provided in embodiment 1 of the present invention;

FIG. 3 is a schematic view of a first perspective of a joint portion provided in accordance with example 1 of the present invention;

FIG. 4 is a schematic structural view from a second perspective of a joint portion provided in accordance with example 1 of the present invention;

FIG. 5 is a schematic structural view from a third perspective of a joint portion provided in example 1 of the present invention;

FIG. 6 is a schematic structural view of a first perspective of a marine oil and gas production drill pipe provided in embodiment 2 of the present invention;

FIG. 7 is a schematic sectional elevational view of the marine oil and gas production drill pipe provided in example 2 of the present invention;

FIG. 8 is a schematic structural view of a first perspective of a marine oil and gas production drill pipe provided in examples 3 and 4 of the present invention;

FIG. 9 is a schematic structural view in elevation and section provided in examples 3, 4 and 5 of the present invention;

FIG. 10 is an enlarged schematic view of portion A of FIG. 9 according to embodiment 3 of the present invention;

FIG. 11 is an enlarged schematic view of part B of FIG. 9 according to embodiment 5 of the present invention;

FIG. 12 is a schematic structural view of a first perspective of a marine oil and gas production drill pipe as provided in examples 6 and 7 of the present invention;

fig. 13 is an enlarged schematic structural view of part C in fig. 12 provided in embodiment 6 and embodiment 7 of the present invention;

FIG. 14 is a schematic structural view from a second perspective of the marine hydrocarbon producing drill pipe provided in accordance with example 7 of the present invention;

fig. 15 is an enlarged schematic structural view of portion D in fig. 14 provided in embodiment 7 of the present invention;

fig. 16 is a schematic structural view of a second cartridge portion provided in embodiment 7 of the present invention;

FIG. 17 is a schematic illustration of the configuration of the first and second tubing sections of the marine hydrocarbon producing drill pipe provided in embodiment 8 of the present invention.

In the figure: 110. a joint; 120. a connecting rod; 130. a drill bit; 210. an injection channel; 220. an injection member; 211. an inlet; 212. an outlet; 310. a stirring blade; 111. a connecting plate; 112. a circular ring; 1121. a limiting groove; 113. a screw; 1111. an upper plate; 1112. a lower plate; 1113. a first clamping block; 1114. a first card slot;

230. fixing a sleeve; 221. a liquid storage barrel; 222. a liquid injection pump; 223. a first docking channel;

240. a sleeving connection ring;

121. a first annular groove; 242. a linear slideway; 243. a second connecting column; 244. a slider; 250. an air injection pump; 251. a second docking channel;

213. a first sub-channel; 214. a second sub-channel; 260. locking screws; 261. a first spring; 262. a sphere;

320. a rotating shaft; 330. a spring plate;

340. a cover body; 341. a second card slot; 350. accommodating a tank; 351. a second spring; 352. a second fixture block; 353. a first ramp; 360. a slideway; 361. a transmission block; 3521. a second ramp;

370. a first conduit; 380. a second pipe; 371. a first piston; 381. a second piston; 390. and (5) lengthening the rod.

Detailed Description

For further understanding of the contents, features and effects of the invention, the following examples are given in conjunction with the accompanying drawings.

The structure of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1

Referring to fig. 1 and 2, an embodiment of the invention provides an offshore oil and gas production drill pipe, which includes a drill pipe body, an injection assembly and a stirring assembly, wherein the drill pipe body is used for drilling a well, the injection assembly is used for injecting a viscosity reducer into an oil well, so that the viscosity of crude oil can be reduced, and the stirring assembly is used for stirring the crude oil and the viscosity reducer, so that the viscosity reducer is rapidly and uniformly distributed in the crude oil, and the viscosity reduction speed is increased.

The drill rod body comprises a joint 110, a connecting rod 120 and a drill bit 130, wherein the connecting rod 120 is fixedly connected to the lower end of the joint 110, and the drill bit 130 is fixedly connected to the lower end of the connecting rod 120.

The injection assembly comprises an injection channel 210 and an injection piece 220, wherein the upper end of the injection channel 210 is provided with an inlet 211, the inlet 211 is at least partially communicated with the injection piece 220, and the lower end of the injection channel 210 is provided with an outlet 212.

The stirring assembly comprises a stirring blade 310, and the stirring blade 310 is connected to the drill rod body or the injection assembly.

In this embodiment, the joint 110 is connected to an external driving device such as a driving shaft, and the external driving device drives the joint 110 to rotate, and the joint 110 drives the connecting rod 120 to rotate, so as to drive the drill 130 to rotate to drill the oil well.

When the viscosity of the crude oil is large, the injector 220 injects the viscosity reducer into the crude oil through the injection passage 210, thereby reducing the viscosity of the crude oil in the well. The stirring blade 310 can stir the viscosity reducer to rapidly and uniformly distribute the viscosity reducer into the crude oil, thereby rapidly reducing the viscosity of the crude oil.

Referring to fig. 3, 4 and 5, in the present embodiment, the joint 110 includes a connecting plate 111, a circular ring 112 is fixedly connected to a lower surface of the connecting plate 111, a limiting groove 1121 is formed in an inner wall of the circular ring 112, the connecting rod 120 is a rectangular rod, an upper end of the connecting rod 120 extends into the circular ring 112, and four corners of the connecting rod 120 are clamped in the limiting groove 1121, so that the circular ring 112 and the connecting rod 120 can be prevented from rotating relatively; one side of the circular ring 112 is rotatably connected with a screw 113 through threads, and the screw 113 is connected with a connecting rod 120.

The connecting plate 111 comprises an upper plate 1111 and a lower plate 1112, the upper plate 1111 is fixedly welded with an external driving device, and the lower plate 1112 is fixedly connected with the upper plate 1111 through bolts, so that the device can be replaced conveniently. The lower surface of the upper plate 1111 is fixedly connected with a first clamping block 1113, the upper surface of the lower plate 1112 is provided with a first clamping groove 1114 matched with the first clamping block 1113, and the first clamping block 1113 is in clamping fit with the first clamping groove 1114, so that the coaxiality of the upper plate 1111 and the lower plate 1112 can be increased, and the upper plate 1111 and the lower plate 1112 are prevented from rotating relatively.

Example 2

On the basis of the above embodiment, the following settings are also made:

referring to fig. 6 and 7, said injection assembly comprises a fixing sleeve 230, said fixing sleeve 230 being fixedly secured to said connecting rod 120, said injection channel 210 being provided in the fixing sleeve 230;

the injection member 220 comprises a liquid storage barrel 221, an injection pump 222 and a first butt channel 223, wherein the inlet end of the injection pump 222 is communicated with the liquid storage barrel 221 through a pipeline, the outlet end of the injection pump 222 is communicated with the first butt channel 223 through a pipeline, and the first butt channel 223 is communicated with the injection channel 210 at least partially.

In this embodiment, the viscosity reducing agent is drawn from the reservoir 221 by the infusion pump 222 and then injected into the first docking passage 223, and when the first docking passage 223 and the injection passage 210 are aligned, the viscosity reducing agent flows into the injection passage 210.

As the drill rod body rotates, the fixing sleeve 230 rotates with the drill rod body, so the injection passage 210 rotates around the axis of the drill rod body, while the first docking passage 223 does not rotate, so that the first docking passage 223 is communicated with the injection passage 210 only for a part of the time, and when the first docking passage 223 and the injection passage 210 are aligned, the viscosity reducer flows into the injection passage 210.

In the prior art, a channel for flowing the viscosity reducer is arranged inside the drill rod, which is similar to the injection channel 210 in the application, so that the mechanical strength of the drill rod is reduced, and the drill rod is easily damaged by torsion during drilling. In the embodiment, the fixing sleeve 230 is sleeved on a part of the outer side of the drill rod body of the connecting rod 120, and the injection channel 210 is arranged in the fixing sleeve 230 instead of the connecting rod 120, so that the mechanical strength of the drill rod is not reduced, and the fixing sleeve 230 is fixedly sleeved on the connecting rod 120, so that the connecting rod 120 is prevented from being deformed by torsion, the mechanical strength of the connecting rod 120 is not reduced, and the strength of the connecting rod 120 is increased.

Further, a plurality of injection passages 210 are provided at the middle of the side wall of the fixing sleeve 230, respectively, to increase the injection efficiency.

Example 3

On the basis of the above embodiment, the following settings are also made:

referring to fig. 8, 9 and 10, the connecting rod 120 is a rectangular rod, the cross section of the connecting rod 120 is square, a first annular groove 121 is formed in the connecting rod 120, a sleeving ring 240 is slidably sleeved in the first annular groove 121, the first butt-joint channel 223 is formed in the sleeving ring 240, and the lower end of the first butt-joint channel 223 extends to the lower surface of the sleeving ring 240.

The upper surface of said retaining sleeve 230 is flush with the lower surface of said first annular groove 121; the upper surface of the fixture sleeve 230 engages the bottom surface of the socket ring 240 and the first docking passage 223 is alignable with the injection passage 210.

In this embodiment, the connecting rod 120 rotates the retaining sleeve 230, and since the collar 240 is connected to the infusion pump 222 via the tubing, the collar 240 cannot rotate with the connecting rod 120, which could cause the tubing to wrap around.

The first docking passage 223 is an L-shaped passage, one end of which is disposed at the side of the docking ring 240 for connection with the priming pump 222 via a tube, and the other end of which is disposed at the lower side of the docking ring 240 for communication with the priming passage 210.

When the lower end of the first butt channel 223 is communicated with the injection channel 210, the viscosity reducer can be injected into the injection channel 210, and when the first butt channel 223 is not communicated with the injection channel 210, the lower end of the first butt channel 223 is attached to the upper surface of the fixing sleeve 230, so that the viscosity reducer in the first butt channel 223 cannot be lost and wasted.

The existing drill pipe body may be tilted while drilling the well, and in this embodiment, the socket ring 240 may right the drill pipe body, thereby reducing the degree of tilt.

Further, since the drill rod body moves downward while rotating, the bell socket 240 should also descend accordingly, and the bell socket 240 can be fixed in two ways:

the first method is as follows: one side of the sleeve ring 240 is fixedly connected with a first connecting column, and the first connecting column can descend synchronously with the drill rod body.

The second method comprises the following steps:

also comprises a fixedly arranged linear slideway 242; a second connecting pole 243 is fixedly connected to one side of the sleeving ring 240, a sliding block 244 is fixedly connected to the end of the second connecting pole 243, and the sliding block 244 is slidably connected to the linear slideway 242. In the above arrangement, the socket ring 240 can only move up and down, but not horizontally, so that the drill rod body can be centered and prevented from tilting.

Example 4

On the basis of the above embodiment, the following settings are also made:

referring to fig. 8 and 9, the injection assembly further includes an injection gas pump 250; the socket ring 240 has a second docking channel 251 therein, the second docking channel 251 being at least partially aligned with the injection channel 210; the output end of the air injection pump 250 is communicated with the second butt-joint channel 251 through a connecting pipeline.

In this embodiment, the second docking channel 251 may inject air into the injection channel 210, and the first docking channel 223 injects viscosity reducer into the injection channel 210, and the second docking channel 251 injects air into the injection channel 210, alternately.

In one aspect, the gas injected into the injection channel 210 may exert a force on the viscosity reducer in the injection channel 210 to cause it to flow down rapidly, thereby increasing the rate of viscosity reduction. On the other hand, the backflow of the viscosity reducing agent can be prevented, and the backflow of the crude oil into the injection passage 210 can be prevented.

Example 5

On the basis of the above embodiment, the following settings are also made:

referring to fig. 9 and 11, the injection passage 210 includes a first sub-passage 213 and a second sub-passage 214, a lower end of the first sub-passage 213 communicates with an upper end of the second sub-passage 214, and a diameter of the first sub-passage 213 is smaller than a diameter of the second sub-passage 214;

one side of fixed cover 230 is connected with locking screw 260 through the screw thread rotation, locking screw 260's one end extends to in the first sub-passageway 213, be connected with first spring 261 on the locking screw 260, first spring 261 is located in the first sub-passageway 213, the lower extreme fixedly connected with spheroid 262 of first spring 261, spheroid 262 is located in the second sub-passageway 214, just spheroid 262 with the lower extreme laminating of first sub-passageway 213.

In this embodiment, when no viscosity reducer is injected, the ball 262 abuts against the lower end of the first sub-passage 213, and prevents the crude oil from flowing back into the first sub-passage 213. When the viscosity reducer is injected, the ball 262 moves downward under the pushing force of the viscosity reducer and the gas, so that the viscosity reducer can flow into the second sub-passage 214 and the crude oil from the second sub-passage 214.

Thus, in this embodiment, the gas injection pump 250 functions to assist in pushing the ball 262. Also, in the present embodiment, the first spring 261 is coupled by the locking screw 260, and thus, it is convenient to install and remove the first spring 261 and the ball 262.

Example 6

On the basis of the above embodiment, the following settings are also made:

referring to fig. 12 and 13, the stirring blade 310 is rotatably connected to the outer surface of the fixing sleeve 230 through a rotating shaft 320, the rotating shaft 320 has a spring plate 330, one end of the spring plate 330 is connected to the fixing sleeve 230, and the other end of the spring plate 330 is connected to the stirring blade 310.

In this embodiment, the stirring blade 310 may be used to stir the crude oil and the viscosity reducer, so that the viscosity reducer is rapidly and uniformly distributed in the crude oil, thereby increasing the viscosity reduction speed of the crude oil. The agitating blade 310 may elastically swing by the elastic pieces 330, and thus may not be easily broken when colliding against an obstacle.

Example 7

In the arrangement described, the mixing blades 310 may impede the drilling operation of the drill pipe body during normal drilling. Therefore, on the basis of the above-described embodiment, the following settings are also made:

referring to fig. 12-16, the outlet 212 is located below the sidewall of the fixing sleeve 230, and the rotating shaft 320 is located at one side of the outlet 212;

a cover 340 is fixedly connected to one side of the stirring blade 310, the cover 340 can be clamped into the outlet 212, and a second clamping groove 341 is formed in one side of the cover 340;

a receiving groove 350 is formed in one side of the outlet 212 far away from the rotating shaft, a second spring 351 is arranged in the receiving groove 350, a second latch 352 matched with the second latch groove 341 is arranged at one end of the second spring 351, and a first ramp 353 is arranged at one side of the second latch 352;

the fixing sleeve 230 has a slide 360 thereon, a transmission block 361 is slidably connected in the slide 360, one end of the transmission block 361 extends into the second sub-channel 214 and is located at the lower side of the ball 262, and the other end of the transmission block 361 fits the first ramp 353.

In this embodiment, during normal drilling, the cover 340 is engaged with the outlet 212, so that the stirring blade 310 is attached to the surface of the fixing sleeve 230, and the crude oil is not stirred. The stirring blade 310 does not obstruct the drilling operation of the drill pipe body.

When the viscosity of the crude oil is high and the viscosity reducer needs to be injected, the viscosity reducer and the gas press the ball 262 downward. When the sphere 262 moves downwards, the transmission block 361 is extruded, the transmission block 361 moves in the slide way 360, so that the first ramp 353 is extruded, the second fixture block 352 moves towards the inside of the accommodating groove 350, the clamping connection of the second clamping groove 341 is removed, the cover body 340 is separated from the outlet 212, the stirring blade 310 can stir crude oil and the viscosity reducer, the viscosity reducer is rapidly and uniformly distributed in the crude oil, and the viscosity reduction speed of the crude oil is improved.

Further, a side of the second latch 352 close to the cover 340 has a second ramp 3521.

The cover 340 is pressed against the second ramp 3521, so that the second latch 352 is latched to the second latch slot 341.

Example 8

On the basis of the above embodiment, the following settings are also made:

referring to fig. 17, a first pipe 370 is arranged inside the stirring blade 310, one end of the first pipe 370 is connected to the first sub-channel 213 through a hose, the other end of the first pipe 370 is connected to a second pipe 380, the diameter of the second pipe 380 is larger than that of the first pipe 370, and the other end of the second pipe 380 penetrates through the stirring blade 310;

a first piston 371 is attached to the inner wall of the first pipeline 370, and a second piston 381 is attached to the inner wall of the second pipeline 380;

the other end of the second piston 381 is fixedly connected with an extension bar 390, and the extension bar 390 can extend out of the second pipe 380.

In this embodiment, when the first sub-passage 213 is filled with gas, the gas enters the first pipe 370 through the hose, pushes the first piston 371, and the first piston 371 pushes the second piston 381 to move, thereby pushing the extension bar 390 to protrude from the second pipe 380, i.e., from the agitating blade 310, thereby increasing the agitating efficiency.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An offshore oil and gas production drill pipe, comprising:

the drill rod body comprises a joint (110), a connecting rod (120) and a drill bit (130), wherein the connecting rod (120) is fixedly connected to the lower end of the joint (110), and the drill bit (130) is fixedly connected to the lower end of the connecting rod (120);

the injection assembly comprises an injection channel (210) and an injection piece (220), wherein the upper end of the injection channel (210) is provided with an inlet (211), the inlet (211) is communicated with the injection piece (220) at least in part of the time, and the lower end of the injection channel (210) is provided with an outlet (212);

and the stirring assembly comprises a stirring blade (310), and the stirring blade (310) is connected to the drill rod body or the injection assembly.

2. The marine oil and gas production drill pipe of claim 1, wherein: the injection assembly comprises a fixed sleeve (230), the fixed sleeve (230) is fixedly sleeved on the connecting rod (120), and the injection channel (210) is arranged in the fixed sleeve (230);

the injection member (220) comprises a liquid storage barrel (221), an injection pump (222) and a first butt-joint channel (223), wherein the inlet end of the injection pump (222) is communicated with the liquid storage barrel (221) through a pipeline, the outlet end of the injection pump (222) is communicated with the first butt-joint channel (223) through a pipeline, and the first butt-joint channel (223) is communicated with the injection channel (210) at least part of time.

3. The marine oil and gas production drill pipe of claim 2, wherein: the connecting rod (120) is a rectangular rod, the cross section of the connecting rod (120) is square, a first annular groove (121) is formed in the connecting rod (120), a sleeving ring (240) is sleeved in the first annular groove (121) in a sliding mode, a first butt joint channel (223) is formed in the sleeving ring (240), and the lower end of the first butt joint channel (223) extends to the lower surface of the sleeving ring (240);

the upper surface of the fixing sleeve (230) is flush with the lower surface of the first annular groove (121); the upper surface of the fixing sleeve (230) and the bottom surface of the coupling ring (240) are in contact, and the first docking passage (223) can be aligned with the injection passage (210).

4. An offshore oil and gas production drill pipe as set forth in claim 3, wherein:

the device also comprises a fixedly arranged linear slideway (242); one side of the sleeving ring (240) is fixedly connected with a second connecting column (243), the end part of the second connecting column (243) is fixedly connected with a sliding block (244), and the sliding block (244) is connected with the linear slideway (242) in a sliding manner.

5. A marine oil and gas production drill pipe according to claim 3, wherein:

the injection assembly further includes an insufflation pump (250); the socket ring (240) has a second docking channel (251) therein, the second docking channel (251) being at least partially aligned with the injection channel (210); the output end of the air injection pump (250) is communicated with the second butt joint channel (251) through a connecting pipeline.

6. An offshore oil and gas production drill pipe as set forth in claim 5, wherein:

the injection channel (210) comprises a first sub-channel (213) and a second sub-channel (214), the lower end of the first sub-channel (213) is communicated with the upper end of the second sub-channel (214), and the diameter of the first sub-channel (213) is smaller than that of the second sub-channel (214);

one side of fixed cover (230) is connected with locking screw (260) through the screw rotation, the one end of locking screw (260) extends to in first subchannel (213), be connected with first spring (261) on locking screw (260), first spring (261) are located in first subchannel (213), the lower extreme fixedly connected with spheroid (262) of first spring (261), spheroid (262) are located in second subchannel (214), just spheroid (262) with the lower extreme laminating of first subchannel (213).

7. The marine oil and gas production drill pipe of claim 6, wherein:

stirring vane (310) through pivot (320) rotate connect in the surface of fixed cover (230), shell fragment (330) has on pivot (320), the one end of shell fragment (330) is connected in fixed cover (230), the other end of shell fragment (330) is connected in stirring vane (310).

8. The marine oil and gas production drill pipe of claim 7, wherein:

the outlet (212) is positioned below the side wall of the fixed sleeve (230), and the rotating shaft (320) is positioned at one side of the outlet (212);

a cover body (340) is fixedly connected to one side of the stirring blade (310), the cover body (340) can be clamped into the outlet (212), and a second clamping groove (341) is formed in one side of the cover body (340);

one side of the outlet (212) far away from the rotating shaft is provided with a receiving groove (350), a second spring (351) is arranged in the receiving groove (350), one end of the second spring (351) is provided with a second clamping block (352) matched with the second clamping groove (341), and one side of the second clamping block (352) is provided with a first ramp (353);

the fixed sleeve (230) is provided with a slide way (360), a transmission block (361) is connected in the slide way (360) in a sliding mode, one end of the transmission block (361) extends into the second sub-channel (214) and is located on the lower side of the ball body (262), and the other end of the transmission block (361) is attached to the first ramp (353).

9. The marine oil and gas production drill pipe of claim 8, wherein:

one side of the second clamping block (352) close to the cover body (340) is provided with a second ramp (3521).

10. The marine oil and gas production drill pipe of claim 6, wherein:

a first pipeline (370) is arranged inside the stirring blade (310), one end of the first pipeline (370) is communicated with the first sub-channel (213) through a hose, the other end of the first pipeline (370) is communicated with a second pipeline (380), the diameter of the second pipeline (380) is larger than that of the first pipeline (370), and the other end of the second pipeline (380) penetrates through the stirring blade (310);

a first piston (371) is attached to the inner wall of the first pipeline (370), and a second piston (381) is attached to the inner wall of the second pipeline (380);

the other end of the second piston (381) is fixedly connected with an extension bar (390), and the extension bar (390) can extend out of the second pipeline (380).