CN211573439U

CN211573439U - Mud and drilling fluid circulating system

Info

Publication number: CN211573439U
Application number: CN201921849881.9U
Authority: CN
Inventors: 戴一鸣; 韩中阳
Original assignee: Fuzhou Yingguang Technology Co ltd
Current assignee: Fuzhou Yingguang Technology Co ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-09-25
Anticipated expiration: 2029-10-30

Abstract

The utility model relates to a mud and drilling fluid circulating system, which comprises a mud collecting tank, wherein the mud collecting tank is a tank body, a sleeve which is connected to the bottom of the tank and is communicated up and down is arranged in the tank body, and a discharge port is arranged on the side surface of the tank body; the slurry treatment tank is a tank body, and is divided into a stirring tank and a sedimentation tank by a filter screen, and the stirring tank is provided with a stirring device; a feed port is arranged on the sedimentation tank and is in butt joint with the discharge port through a connecting pipe; the side wall of the stirring tank is provided with a return port, and the return port is connected to the hollow drill rod through a return pipe; the return pipe is provided with a second mud pump. The utility model has the advantages that: 1. when the device is used, a mud pool does not need to be excavated temporarily, and only the mud and drilling fluid circulating system needs to be transported to a designated area for installation. 2. The mud circulation is closed circulation, and the design of mud collecting pit can guarantee more that mud can't the outflow, avoids the polluted environment. 3. The existing precipitation, filtration and stirring systems are added, and the slurry concentration is more convenient and fine to prepare.

Description

Mud and drilling fluid circulating system

Technical Field

The utility model relates to an exploration equipment field, especially a mud, drilling fluid circulation system.

Background

The mud (drilling fluid) mainly plays a role in lubricating and protecting the collapse of the hole wall in the drilling process, so a mud circulating system is generally used for timely conveying and supplementing the mud (drilling fluid) in the drilling process. At present, a mud (drilling fluid) circulating system in the drilling process is open, namely an open temporary mud pit and a backflow groove are manually excavated, a worker prepares mud (drilling fluid) in the pit to make slurry, a mud pump valve matched with a drilling machine is opened during drilling, the mud (drilling fluid) is pumped into a hollow drill rod through a high-pressure rubber pipe, and the mud flows into a drill hole through a drilling tool at the bottom of the drill rod, so that the drilling tool and the hole wall are lubricated, cooled and prevented from collapsing. When the drilling hole is filled with mud (drilling fluid), the mud overflows from the hole opening of the drilling hole and flows into a mud pit through the backflow groove, and circulation is completed.

Conventional mud circulation has the following problems:

the method has the advantages that manual excavation is needed for the slurry pit, time and labor are wasted, and the slurry pit cannot be excavated in most fields;

the circulation of the mud (drilling fluid) is open in the open air, and the mud (drilling fluid) is easy to flow out and pollutes the environment;

the method has the advantages that the molded precipitation, filtration and stirring system is not adopted, the parameters of slurry making (drilling fluid) blending, concentration and the like are mainly determined according to experience, and the process is extensive;

the inflow amount and the loss amount of the slurry (drilling fluid) cannot be measured.

Disclosure of Invention

An object of the utility model is to provide a mud, drilling fluid circulation system, mud, drilling fluid circulation system use when drilling, can reduce the site operation, pollute the surrounding environment and can accurately know mud input and output and control mud quality when avoiding drilling.

The utility model discloses a following technical scheme realizes: a mud and drilling fluid circulating system comprises

The slurry collecting tank 1 is a tank body, a sleeve 11 which is connected to the bottom of the tank and is communicated up and down is arranged in the tank body, and a discharge hole 12 is arranged on the side surface of the tank body;

the slurry treatment tank 2 is a tank body and is divided into a stirring tank 21 and a sedimentation tank 22 by a filter screen 23, and the stirring tank 21 is provided with a stirring device 211; a feed inlet 24 is arranged on the sedimentation tank 22, and the feed inlet 24 is butted with the discharge outlet 12 through a connecting pipe 25; the side wall of the stirring tank 21 is provided with a return port 26, and the return port 26 is connected to the hollow drill rod through a return pipe 27;

the return pipe 27 is provided with a second mud pump.

Compared with the prior art, the utility model has the advantages that:

1. when the device is used, a mud pool does not need to be excavated temporarily, and only the mud and drilling fluid circulating system needs to be transported to a designated area for installation.

2. The mud circulation is closed circulation, and the design of mud collecting pit can guarantee more that mud can't the outflow, avoids the polluted environment.

3. The existing precipitation, filtration and stirring systems are added, and the slurry concentration is more convenient and fine to prepare.

4. The mud inlet and outlet quantity and the loss quantity can be better measured by matching the flowmeter.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Description of reference numerals: 1 a mud collecting tank, 11 casing pipes, 12 a discharge port, 2 a mud treatment tank, 21 a stirring tank, 211 a stirring device, 22 a sedimentation tank, 23 a filter screen, 24 a feed port, 25 a connecting pipe, 26 a return port, 27 a return pipe, 28 running wheels, 29 support legs, 3 a first flowmeter, 4 a second flowmeter and 5 a liquid level sensor.

Detailed Description

The invention is explained in detail below with reference to the accompanying drawings:

as shown in fig. 1: a mud and drilling fluid circulating system comprises

a first slurry pump is provided on the connecting pipe 25 and a second slurry pump is provided on the return pipe 27.

The mud collecting tank 1 is used for collecting and stabilizing mud, and then delivering the mud to a mud treatment tank more stably. Slurry overflowing from the borehole flows into the slurry collection tank 1 through the casing 11 and automatically flows out under gravity when the slurry level exceeds the discharge port 12.

The mud treatment tank 2 is divided into two parts, the sedimentation tank 22 carries out sedimentation treatment on the mud, the mud reaches the stirring tank 21 after being filtered, the stirring tank 21 mainly mixes and stirs the pulping materials with water uniformly according to the proportion through the stirring device 211 (stirrer), and the pulping materials are conveyed to the bottom of a drill hole through the second mud pump after the solubility and the specific gravity of the pulping materials meet the requirements.

The stirred slurry flows back to the hollow drill rod through the return pipe, and because the feeding position of the hollow drill rod is generally higher than the height of the return port, a second slurry pump is required to be added on the return pipe to provide slurry return power.

The slurry in the slurry collecting tank automatically flows into the slurry processing tank through the principle of the U-shaped pipe, but the first slurry pump is additionally arranged on the connecting pipe 25 in consideration of the fact that the slurry in the slurry collecting tank is increased at a higher speed.

The first flow meter 3 is provided on the connection pipe 25. The mud pumped into the drill hole flows back to the mud collecting tank 1 through the bottom of the drill hole and finally flows back to the sedimentation tank 22; the return flow of mud (drilling fluid) is measured by a first flow meter 3 mounted on a connecting pipe 25 at the inflow port of the settling tank 22.

A second flow meter 4 is provided on the return pipe 27. The pumped mud (drilling fluid) is measured by a second flow meter 4 arranged on the return pipe 27 to measure the inflow of the mud (drilling fluid).

And subtracting the backflow amount of the mud (drilling fluid) from the inflow amount of the mud (drilling fluid) to obtain the loss amount of the mud (drilling fluid).

The first flow meter 3 and the second flow meter 4 are used to detect the outflow and return flows of the slurry, respectively. The first flowmeter and the second flowmeter can adopt electromagnetic flowmeters, such as HY-LDE-25.

A liquid level sensor 5 is arranged in the slurry collecting pool 1, the horizontal height of the liquid level sensor 5 is higher than that of the discharge hole 12, and the liquid level sensor 5 is connected with a first slurry pump. Once the mud (drilling fluid) in the mud collecting pool 1 is about to be filled and overflowed, the liquid level sensor 5 starts the first mud pump at the discharge hole 12 to ensure that the mud (drilling fluid) does not flow outwards, thereby achieving the purpose of protecting the field environment.

The bottom of the mud treatment tank 2 is provided with travelling wheels 28 which can facilitate the movement of the mud treatment tank 2. The slurry treatment tank 2 is convenient to move.

The bottom of the sludge treatment basin 2 is provided with feet 29 for positioning the sludge treatment basin 2. The positioning of the slurry treatment tank 2 is facilitated. The support leg is connected to the side wall of the slurry treatment pool 2 in a hinged mode, and the slurry treatment pool 2 is supported and positioned through the lower portion.

The mesh number of the filter screen 23 is 5-60 meshes. The rock debris, gravel and soil particles brought out of the drill hole by the mud (drilling fluid) are precipitated in the sedimentation tank 22, solid impurities are filtered out by the filter screen 23 and enter the stirring tank 21, and workers can stir and mix the qualified mud (drilling fluid) again by the stirrer.

The working principle is as follows:

slurry collecting tank

The sleeve of the mud collecting pool is sleeved on the drill hole, mud overflowing from the drill hole flows into the mud collecting pool through the sleeve, and when the mud exceeds the water outlet, the mud automatically flows out by gravity.

In addition, a liquid level sensor is further installed at the outlet of the slurry collecting pool, once the slurry in the pool is about to fill and overflow, the liquid level sensor can start a first slurry pump at the outlet of the water outlet, and the slurry is guaranteed not to flow out.

Slurry treatment tank

The slurry treatment tank is generally a rectangular tank body and is divided into a sedimentation tank and a stirring tank. The mud that the mud collecting pit flows into the sedimentation tank through first flowmeter 3, is sedimentated in the sedimentation tank by the bold grit that mud was taken out from the drilling, filters away impurity entering stirring pond through filter screen 23, and the workman can rotate the agitator and stir allotment mud, and the mud of allotment is flowing out through second flowmeter 4 and is accessed the second slush pump of rig, and the pumping is accomplished the circulation.

The mud treatment tank is also provided with travelling wheels 28 and support legs 29, the wheels facilitate workers to move the tank body, and the fixed legs can be put down to fix the tank body after the tank body is moved to a proper position.

While the present invention has been shown and described with reference to particular embodiments and alternatives thereof, it will be understood that various changes and modifications can be made without departing from the spirit and scope of the invention. It is understood, therefore, that the invention is not to be limited, except as by the appended claims and their equivalents.

Claims

1. Mud, drilling fluid circulation system, its characterized in that: it comprises

The slurry collecting tank (1) is a tank body, a sleeve (11) which is connected to the bottom of the tank and is communicated up and down is arranged in the tank body, and a discharge hole (12) is arranged on the side surface of the tank body;

the slurry treatment tank (2) is a tank body and is divided into a stirring tank (21) and a sedimentation tank (22) through a filter screen (23), and a stirring device (211) is arranged on the stirring tank (21); a feed inlet (24) is arranged on the sedimentation tank (22), and the feed inlet (24) is butted with the discharge outlet (12) through a connecting pipe (25); a return port (26) is formed in the side wall of the stirring pool (21), and the return port (26) is connected to the hollow drill rod through a return pipe (27);

the connecting pipe (25) is provided with a first slurry pump, and the return pipe (27) is provided with a second slurry pump.

2. The mud, drilling fluid circulation system of claim 1, wherein: a first flowmeter (3) is provided on the connection pipe (25).

3. The mud, drilling fluid circulation system of claim 1, wherein: a second flowmeter (4) is provided on the return pipe (27).

4. The mud, drilling fluid circulation system of claim 1, wherein: a liquid level sensor (5) is arranged in the slurry collecting pool (1), the horizontal height of the liquid level sensor (5) is higher than that of the discharge hole (12), and the liquid level sensor (5) is connected with a first slurry pump.

5. The mud, drilling fluid circulation system of claim 1, wherein: the bottom of the slurry treatment pool (2) is provided with a travelling wheel (28) which can facilitate the movement of the slurry treatment pool (2).

6. The mud, drilling fluid circulation system of claim 5, wherein: the bottom of the slurry treatment pool (2) is provided with a support leg (29) for positioning the slurry treatment pool (2).

7. The mud, drilling fluid circulation system of claim 1, wherein: the mesh number of the filter screen (23) is 5-60 meshes.