CN216642042U

CN216642042U - Degasser for petroleum drilling mud liquid

Info

Publication number: CN216642042U
Application number: CN202220137326.9U
Authority: CN
Inventors: 张健; 赵波; 张国栋; 李国杰
Original assignee: DONGYING CITY YONGJI PETROLEUM MACHINERY CO LTD
Current assignee: DONGYING CITY YONGJI PETROLEUM MACHINERY CO LTD
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-05-31
Anticipated expiration: 2032-01-19

Abstract

The utility model discloses a degasser for petroleum drilling mud fluid, which comprises a tank body; a driving shaft is arranged in the tank body; the upper end of the driving shaft is provided with a driving device, and the lower end of the driving shaft is provided with an impeller; a separation bin is arranged in the tank body; the impeller penetrates through the upper end of the separation bin, and a first exhaust channel is arranged between the impeller and the penetration position of the separation bin; the lower end of the separation bin is provided with a liquid inlet pipeline, and the side end of the separation bin is provided with a liquid outlet pipeline; the top of the tank body is provided with an air suction manifold; and a vacuum pump is connected outside the air suction manifold. Compared with the prior art, the utility model has the beneficial effects that: simple structure, it is efficient, can effectual assurance degassing effect, avoid the loss of equipment simultaneously.

Description

Degasser for petroleum drilling mud liquid

Technical Field

The utility model relates to the field of mud liquid treatment equipment, in particular to a degasser for petroleum drilling mud liquid.

Background

The drilling fluid is also called drilling flushing fluid, and is a general name of various circulating fluids meeting the requirements of drilling work in multiple functions in the drilling process. The mud is widely used drilling fluid and is mainly suitable for unstable rock formations of hole walls, such as loose rock formations, fracture development rock formations, easy collapse and block dropping, water swelling and peeling, and the like. During the drilling operation, the gas carried by the drilling fluid in the well kick influences the performance of the mud, has potential safety hazard and influences the service life of part of equipment, so that a vacuum degassing device is required to be installed to intensively remove the gas in the mud.

SUMMERY OF THE UTILITY MODEL

The utility model provides a degasser for petroleum drilling mud fluid, which is characterized by simple structure and high efficiency, and can effectively ensure the degassing effect and avoid the loss of equipment.

In order to achieve the purpose, the utility model provides the following technical scheme: a degasser for petroleum drilling mud liquid comprises a tank body; a driving shaft is arranged in the tank body; the upper end of the driving shaft is provided with a driving device, and the lower end of the driving shaft is provided with an impeller; a separation bin is arranged in the tank body; the impeller penetrates through the upper end of the separation bin, and a first exhaust channel is arranged between the impeller and the penetration position of the separation bin; the lower end of the separation bin is provided with a liquid inlet pipeline, and the side end of the separation bin is provided with a liquid outlet pipeline; the top of the tank body is provided with an air suction manifold; and a vacuum pump is connected outside the air suction manifold.

And optimally, the vacuum pump is connected with a gas-water separator through an exhaust manifold.

Preferably, a second baffle is arranged at the joint between the driving shaft and the impeller.

As optimization, a first baffle is further arranged in the tank body; and a second exhaust channel is arranged between the first baffle and the second baffle.

Preferably, the first baffle and the second baffle are distributed in a staggered structure.

As optimization, one side of the upper tank body of the separation bin is provided with an observation port.

Preferably, the top of the tank body is provided with a shock-proof vacuum meter.

Preferably, the vacuum pump is a water ring vacuum pump.

Preferably, the driving device comprises a transmission wheel and a driving wheel; the transmission wheel is connected with the driving wheel through a belt; and the driving wheel is connected with a driving motor.

Preferably, a protective shell is arranged outside the belt between the transmission wheel and the driving wheel.

Compared with the prior art, the utility model has the following beneficial effects: and a multistage degassing process is adopted, so that the degassing effect is improved, and the performance of the separated slurry is ensured. The whole negative pressure suction mode that adopts of equipment breaks up the feed liquor through the impeller, improves gas-liquid separation efficiency to through setting up first exhaust passage and second exhaust passage solid-state particle and the liquid entering exhaust manifold in the reduction feed liquor, improve gas-liquid separation efficiency. Structurally, firstly, the drilling fluid enters the tank body by utilizing the suction of the vacuum pump, and meanwhile, the gas separated from the drilling fluid is pumped out of the tank body by utilizing the vacuum pump, so that the vacuum pump plays two different roles. Secondly, the mud is shot to the four walls at a high speed through the impeller, bubbles in the drilling fluid are broken thoroughly, the degassing effect is good, and the efficiency is as high as 85%. And thirdly, the drilling fluid can be used as a high-power stirrer under the condition that the drilling fluid is not soaked in air.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the internal structure of the can body of the present invention.

The device comprises a tank body 1, a transmission wheel 2, a driving wheel 3, a belt 4, a driving motor 5, a vacuum pump 6, a gas-water separator 7, an air suction manifold 8, an exhaust manifold 9, a driving shaft 10, an impeller 11, a separation bin 12, a liquid inlet pipeline 13, a liquid outlet pipeline 14, a first exhaust channel 15, a first baffle 16, a second baffle 17, an observation port 18, a second exhaust channel 19 and a shock-proof vacuum meter 20.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A degasser used for mud liquid of petroleum drilling comprises a tank body 1; a driving shaft 10 is arranged in the tank body 1; the upper end of the driving shaft 10 is provided with a driving device, and the lower end of the driving shaft 10 is provided with an impeller 11; a separation bin 12 is arranged in the tank body 1; the impeller 11 penetrates through the upper end of the separation bin 12, and a first exhaust passage 15 is arranged between the impeller 11 and the penetration position of the separation bin 12; a liquid inlet pipeline 13 is arranged at the lower end of the separation bin 12, and a liquid outlet pipeline 14 is arranged at the side end of the separation bin 12; the top of the tank body 1 is provided with an air suction manifold 8; and a vacuum pump 6 is connected outside the air suction manifold 8.

The vacuum pump 6 is connected with a gas-water separator 7 through an exhaust manifold 9. The gas-liquid mixture pumped by the vacuum pump 6 is further effectively separated by the gas-water separator 7.

A second baffle 17 is provided at the junction between the drive shaft 10 and the impeller 11. The suction of the solid-liquid mixture, which is impinged upon by the impeller 11, into the intake manifold 8 is effectively prevented by the second baffle 17. A first baffle 16 is also arranged in the tank body 1; a second exhaust passage 19 is provided between the first baffle 16 and the second baffle 17. The first baffle 16 and the second baffle 17 are distributed in a staggered structure. And the design of a dislocation structure is adopted, so that the separation effect is further improved.

And a viewing port 18 is arranged at one side of the tank body 1 above the separation bin 12. The observation can be effectively carried out through the observation port, and when more deposits exist between the separation bin 12 and the first baffle plate 16, the timely treatment can be carried out.

Further, the top of the tank body 1 is provided with a shock-proof vacuum meter 20.

Further, the vacuum pump 6 is a water ring vacuum pump. The water-ring vacuum pump is always in an isothermal state in the working process, is suitable for sucking inflammable and explosive gases, and has reliable safety performance.

Further, the driving device comprises a transmission wheel 2 and a driving wheel 3; the transmission wheel 2 is connected with the driving wheel 3 through a belt 4; the driving wheel 3 is connected with a driving motor 5.

Furthermore, a protective shell is arranged outside the belt 4 between the transmission wheel 2 and the driving wheel 3.

The working principle is as follows:

when the driving motor 5 is started, the coupling belt is pulled manually, so that the phenomenon of jamming is avoided, any abnormal sound is avoided, and the belt is proper in tightness. If the jamming phenomenon exists, the motor power supply can not be started absolutely so as to avoid burning the motor.

Before starting, the rotation directions of the driving motor 5 and the vacuum pump 6 are firstly known, and the rotation arrows marked on the vacuum pump 6 and the protective shell are consistent with the rotation directions of the rotation arrows, so that the rotation in the opposite direction is absolutely prohibited.

When the vacuum pump is started, the reading on the shock-resistant vacuum meter 20 needs to be paid attention to, the vacuum degree needs to be normal within 0.02-0.04 Mpa, otherwise, the vacuum degree needs to be adjusted through a manual control valve so as to avoid damaging the vacuum pump.

The drilling mud liquid enters the separation bin 12 through the liquid inlet pipeline 13 under the negative pressure adsorption effect of the vacuum pump 6, is thrown to the inner wall of the separation bin 12 in a jet mode under the stirring impact of the impeller 11, bubbles in the drilling mud liquid are broken due to collision, gas escapes, and the drilling mud liquid is sucked by the vacuum pump 6 and sequentially discharged through the first exhaust channel 15 and the second exhaust channel 19. The drilling mud is discharged from the tank 1 through the outlet pipe 14.

It should be noted that during routine maintenance, the tank 1 should be cleaned once a week to avoid debris clogging the gas passages. When the tank is washed, the high-pressure water pipe is connected with the pipe joint on the top cover of the tank body 1, the valve is opened, and the tank is washed for 3-5 minutes.

After the equipment is used and the power supply is cut off, the inside of the tank body 1 is washed by a high-pressure water pipe, whether parts are damaged or not is checked, and foreign matters in the tank are removed.

When the working environment temperature is higher than 40 ℃, the shock-resistant vacuum meter 20 is checked at any time, and when the vacuum degree is less than 0.02Mpa, the water temperature in the vacuum pump is kept to be not more than 45 ℃.

When the vacuum pump is in normal operation, whether vibration exists or not and whether noise exists in the pump or not are observed, the packing box and the bearing temperature are measured (the bearing temperature is not higher than the ambient temperature by 40 ℃, and the working environment is not higher than 70 ℃), and if the vacuum pump is abnormal, the vacuum pump is immediately stopped for inspection.

If the drilling fluid is found to be sucked into the vacuum pump, the control valve above the vacuum tank is immediately adjusted to reduce the vacuum degree and prevent the drilling fluid from continuously entering the vacuum pump.

After the device is used in winter, accumulated water in the gas-water separator and the vacuum pump needs to be drained in time to prevent frost cracking.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A degasser for petroleum drilling mud fluid, characterized in that: comprises a tank body (1); a driving shaft (10) is arranged in the tank body (1); the upper end of the driving shaft (10) is provided with a driving device, and the lower end of the driving shaft (10) is provided with an impeller (11); a separation bin (12) is arranged in the tank body (1); the impeller (11) penetrates through the upper end of the separation bin (12), and a first exhaust channel (15) is arranged between the penetration positions of the impeller (11) and the separation bin (12); a liquid inlet pipeline (13) is arranged at the lower end of the separation bin (12), and a liquid outlet pipeline (14) is arranged at the side end of the separation bin (12); the top of the tank body (1) is provided with an air suction manifold (8); and a vacuum pump (6) is connected outside the air suction manifold (8).

2. A degasser for petroleum drilling mud fluid as claimed in claim 1 wherein: the vacuum pump (6) is connected with a gas-water separator (7) through an exhaust manifold (9).

3. A degasser for petroleum drilling mud fluid as claimed in claim 1 wherein: and a second baffle (17) is arranged at the joint between the driving shaft (10) and the impeller (11).

4. A degasser for petroleum drilling mud fluid according to claim 3, wherein: a first baffle (16) is also arranged in the tank body (1); and a second exhaust channel (19) is arranged between the first baffle plate (16) and the second baffle plate (17).

5. A degasser for petroleum drilling mud according to claim 4 wherein: the first baffle (16) and the second baffle (17) are distributed in a staggered structure.

6. A degasser for petroleum drilling mud fluid as claimed in claim 1 wherein: an observation port (18) is arranged on one side of the tank body (1) above the separation bin (12).

7. A degasser for petroleum drilling mud fluid as claimed in claim 1 wherein: the top of the tank body (1) is provided with a shock-proof vacuum meter (20).

8. A degasser for petroleum drilling mud fluid as claimed in claim 1 wherein: the vacuum pump (6) is a water ring vacuum pump.

9. A degasser for petroleum drilling mud fluid as claimed in claim 1 wherein: the driving device comprises a transmission wheel (2) and a driving wheel (3); the transmission wheel (2) is connected with the driving wheel (3) through a belt (4); and the driving wheel (3) is connected with a driving motor (5).

10. A degasser for petroleum drilling mud fluid as claimed in claim 9 wherein: a protective shell is arranged outside the belt (4) between the driving wheel (2) and the driving wheel (3).