CN116474953A - Device for treating drilling fluid and method for treating drilling fluid - Google Patents

Device for treating drilling fluid and method for treating drilling fluid Download PDF

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Publication number
CN116474953A
CN116474953A CN202210042949.2A CN202210042949A CN116474953A CN 116474953 A CN116474953 A CN 116474953A CN 202210042949 A CN202210042949 A CN 202210042949A CN 116474953 A CN116474953 A CN 116474953A
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CN
China
Prior art keywords
channel
drilling fluid
centrifuge
value
density
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210042949.2A
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Chinese (zh)
Inventor
胡群爱
肖超
赵晨熙
郑德帅
赵建军
赵小祥
臧艳彬
杨顺辉
张东清
崔晓杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Petroleum and Chemical Corp
Sinopec Research Institute of Petroleum Engineering
Original Assignee
China Petroleum and Chemical Corp
Sinopec Research Institute of Petroleum Engineering
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Petroleum and Chemical Corp, Sinopec Research Institute of Petroleum Engineering filed Critical China Petroleum and Chemical Corp
Priority to CN202210042949.2A priority Critical patent/CN116474953A/en
Publication of CN116474953A publication Critical patent/CN116474953A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B5/00—Other centrifuges
    • B04B5/10—Centrifuges combined with other apparatus, e.g. electrostatic separators; Sets or systems of several centrifuges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B13/00—Control arrangements specially designed for centrifuges; Programme control of centrifuges
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/06—Arrangements for treating drilling fluids outside the borehole
    • E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
    • E21B21/065—Separating solids from drilling fluids
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Centrifugal Separators (AREA)

Abstract

The invention belongs to the field of petroleum and natural gas drilling engineering, and particularly discloses a device for treating drilling fluid. It comprises a shell; a centrifuge assembly disposed within the housing, the centrifuge assembly including a first centrifuge and a second centrifuge; and a channel assembly including a first channel, a second channel in communication with the second centrifuge, and a third channel in communication with the second centrifuge and the outlet of the housing. Wherein the channel assembly is configured to split separated drilling fluid flowing from the first channel, wherein a portion of the drilling fluid is transferred through the second channel to the second centrifuge for re-separation, and a portion of the drilling fluid flows through the third channel to the exterior of the housing. The invention can adjust the processing capacity of the first centrifugal machine and the second centrifugal machine to the drilling fluid, thereby enabling the device for processing the drilling fluid to work more smoothly and improving the overall processing efficiency.

Description

Device for treating drilling fluid and method for treating drilling fluid
Technical Field
The invention relates to the field of petroleum and natural gas drilling engineering, in particular to a device for treating drilling fluid and a method for treating the drilling fluid.
Background
In order to adapt to different stratum, the barite is required to be added in the drilling process to improve the density of the drilling fluid, so that the working efficiency of drilling is improved. However, the drilling fluid after well production contains barite, cuttings, poor solid phase and the like. In the prior art, substances such as barite, rock debris, inferior solid phase and the like can be separated, but the whole device is large in size, large in occupied area, complex in operation and installation and needs to be put into more labor cost.
Disclosure of Invention
The invention aims to provide a device for treating drilling fluid, which controls the flow of drilling fluid which flows back to a first centrifugal machine from a fourth channel through a second valve, so that the treatment capacity of the first centrifugal machine is matched with the treatment capacity of a second centrifugal machine.
According to a first aspect of the present invention there is provided an apparatus for treating drilling fluid comprising a housing; a centrifuge assembly disposed within the housing, the centrifuge assembly including a first centrifuge in communication with the inlet of the housing and configured to receive drilling fluid containing impurities, and a second centrifuge; and a channel assembly including a first channel for receiving separated drilling fluid from the first centrifuge, a second channel in communication with the second centrifuge, and a third channel in communication with the second centrifuge and the outlet of the housing, wherein the channel assembly is configured to split the separated drilling fluid exiting the first channel, wherein a portion of the drilling fluid is delivered to the second centrifuge for re-separation through the second channel and a portion of the drilling fluid flows outside of the housing through the third channel.
In one embodiment, a first sensor is disposed on the first channel, the third channel includes a first valve, and the first sensor is configured to monitor the flow rate and density of the separated drilling fluid in the first channel in real time and instruct the flow rate and density of the separated drilling fluid according to the measured value; the first valve is configured to act on the third passage in response to a command from the first sensor to control a flow rate of drilling fluid discharged to the outside of the housing.
In one embodiment, the rotational speed of the first centrifuge is lower than the rotational speed of the second centrifuge.
In one embodiment, the channel assembly further comprises a fourth channel having one end in communication with the first channel and another end in communication with the first centrifuge such that a portion of the separated drilling fluid in the first channel can flow back into the first centrifuge through the fourth channel.
In one embodiment, the second centrifuge is connected to an eighth channel in communication with the outlet, and a third sensor is disposed on the eighth channel, and the third sensor is configured to monitor the flow rate and density of the separated drilling fluid in the eighth channel in real time and issue a command according to the measured value.
In one embodiment, the fourth channel includes a second valve configured to act on the fourth channel in response to instructions from the first and third sensors to return a portion of the drilling fluid in the first channel to the first centrifuge through the fourth channel to match the processing capacities of the first and second centrifuges.
In one embodiment, the channel assembly further comprises a fifth channel in communication with the inlet, a sixth channel in communication with the first centrifuge, and a seventh channel in communication with the outlet, wherein the fifth channel, the sixth channel, and the seventh channel form an intersection.
In one embodiment, a second sensor is disposed on the fifth channel; a third valve is arranged in the sixth channel; the seventh channel is internally provided with a fourth valve, and the second sensor is configured to monitor the flow rate and density of the drilling fluid in the fifth channel in real time and send a command according to the measured value so as to act on the third valve to convey the drilling fluid containing impurities to the first centrifugal machine through the sixth channel or act on the fourth valve to convey the drilling fluid to the outside of the shell through the seventh channel.
In one embodiment, the first and second centrifuges are connected with a first recovery tank and a second recovery tank, respectively, for receiving separated solids.
According to a second aspect of the present invention there is provided a method for treating drilling fluid, the method being carried out using an apparatus for treating drilling fluid as described above, comprising the steps of: s1, measuring and judging a first density value and a first discharge value of drilling fluid through the second sensor; s2, when the first density value and the first displacement value are respectively lower than a first density threshold value and a first displacement threshold value, the third threshold door is closed, the fourth threshold door is opened, and drilling fluid flows to the outside of the shell through the seventh channel; when the first density value and the first displacement value are respectively higher than the first density threshold value and the first displacement threshold value, the third threshold door is opened, the fourth threshold door is closed, and drilling fluid flows to the first centrifugal machine through the sixth channel; s3, measuring and judging a second density value and a second discharge value of the separated drilling fluid from the first centrifugal machine through the first sensor; s4, when the second density value and the second displacement value are respectively lower than a second density threshold value and a second displacement threshold value, the first valve is opened, and separated drilling fluid flows to the outside of the shell through the third channel; when the second density value and the second displacement value are respectively higher than the second density threshold value and the second displacement threshold value, the separated drilling fluid flows to the second centrifugal machine through the second channel to be separated again; s5, measuring a third density value and a third discharge value of the separated drilling fluid from the second centrifugal machine through the third sensor; s6, finally enabling the separated drilling fluid to flow to the outside of the shell through the eighth channel;
in one embodiment, the method further comprises the step of adjusting: and comparing the second displacement value with the third displacement value, and adjusting the flow of the drilling fluid flowing into the second centrifugal machine by adjusting the opening of the second valve, so that the processing capacities of the first centrifugal machine and the second centrifugal machine are matched.
Drawings
The invention will be described in detail below with reference to the attached drawing figures, wherein:
fig. 1 schematically shows the construction of an apparatus for treating drilling fluid according to the present invention.
In the drawings, like parts are designated with like reference numerals. The figures are not drawn to scale.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
Fig. 1 schematically shows the structure of an apparatus 100 for treating drilling fluid according to the present invention. As shown in fig. 1, according to a first aspect of the present invention, there is provided an apparatus 100 for treating drilling fluid, which basically includes a housing 10, a centrifugal assembly 20 and a channel assembly 30. Wherein the housing 10 is configured as a skid-mounted enclosure. The housing 10 is capable of being handled in its entirety to facilitate handling, stacking and installation of the apparatus 100 for treating drilling fluids at a drilling site. The centrifugal assembly 20 is provided inside the casing 10 for separating fixed body wastes such as barite and cuttings in the drilling fluid, thereby improving the usability of the drilling fluid. A channel assembly 30 is provided inside the housing 10 for delivering drilling fluid to the centrifuge assembly 20 in different ways and for removing separated drilling fluid from the housing 10.
According to the invention, as shown in fig. 1, a housing 10 comprises an inlet 1 and an outlet 2. The inlet 1 of the housing 10 communicates with the centrifuge assembly 20 through the channel assembly 30 to deliver drilling fluid containing impurities to the centrifuge assembly 20 for separation. The outlet 2 of the housing 10 communicates with the centrifuge assembly 20 through the passage assembly 30, thereby discharging the separated drilling fluid to the outside of the housing 10.
According to the present invention, as shown in fig. 1, the centrifuge assembly 20 includes a first centrifuge 21 and a second centrifuge 22. Wherein the first centrifuge 21 communicates with the inlet 1 of the housing 10 via a channel assembly 30, thereby enabling the first centrifuge 21 to receive drilling fluid containing impurities. The second centrifuge 22 communicates with the outlet 2 of the housing 10 through the channel assembly 30 such that the separated drilling fluid of the second centrifuge 22 is discharged to the outside of the housing 10.
According to the present invention, as shown in fig. 1, the channel assembly 30 includes a first channel 31, a second channel 32, and a third channel 33. Wherein the first channel 31 is in communication with the first centrifuge 21 for delivering drilling fluid separated by the first centrifuge 21. The second channel 32 communicates with the second centrifuge 22 for delivering drilling fluid to the second centrifuge 22. The third passage 33 communicates with the outlet 2 of the housing 10 for discharging the drilling fluid to the outside of the housing 10. In one embodiment of the invention, a junction is formed between the first channel 31, the second channel 32, and the third channel 33, thereby enabling the separated drilling fluid passing through the first channel 31 to form a split stream, wherein a portion of the drilling fluid is transferred into the second centrifuge 22 through the second channel 32 for re-separation; while another portion of the drilling fluid flows to the outside of the casing 10 through the third passage 33.
According to the present invention, the first centrifuge 21 has a low rotational speed by the control of the first motor 211, thereby separating barite in the drilling fluid. The second centrifuge 22 has a high rotational speed by the control of the second motor 221, thereby separating solid wastes such as cuttings in the drilling fluid. This results in the throughput of the first centrifuge 21 being greater than the throughput of the second centrifuge 22.
In one embodiment of the present invention, a first sensor 311 is disposed on the first channel 31. The first sensor 311 includes, but is not limited to, a density sensor and a displacement sensor. The first sensor 311 is used for detecting the density and the displacement of the drilling fluid separated in the first passage 31 in real time, and can measure a second density value and a second displacement value of the drilling fluid.
According to the present invention, as shown in FIG. 1, the channel assembly 30 further includes an eighth channel 38. The eighth passage 38 is capable of communicating the outlet 2 of the housing 10 with the second centrifuge 22. Further, a third sensor 381 is provided on the eighth passage 38. The third sensor 381 includes, but is not limited to, a density sensor and a displacement sensor. The third sensor 381 is configured to detect the density and displacement of the separated drilling fluid in the eighth passage 38 in real time, and to measure a third density value and a third displacement value of the drilling fluid.
According to the present invention, as shown in FIG. 1, the channel assembly 30 further includes a fourth channel 34. One end of the fourth channel 34 is communicated with the first channel 31, and the other end is communicated with the first centrifugal machine 21, so that the separated drilling fluid is returned to the first centrifugal machine 21 for separation again. A second valve 341 is provided in the fourth passage 34. The second valve 341 controls the flow rate of the drilling fluid flowing back to the first centrifuge 21 more easily by controlling the opening and closing of the fourth passage 34.
According to the present invention, the second valve 341 adjusts the opening degree of the third passage 33 by comparing the second discharge value with the third discharge value. That is, when the second discharge value is greater than the third discharge value, the second valve 341 is opened to return a portion of the drilling fluid in the first channel 31 to the first centrifuge 21 through the fourth channel 34, so that the flow rate of the drilling fluid flowing from the first channel 31 into the second centrifuge 21 through the second channel 32 is reduced, the processing capacity of the first centrifuge 21 is matched with the processing capacity of the second centrifuge 22, and the working efficiency of the device 100 for processing drilling fluid is effectively improved.
In one embodiment of the present invention, a first valve 331 is provided on the third passage 33. The first valve 33 controls the flow rate of the drilling fluid flowing to the outside of the casing 10 by controlling the opening and closing of the third passage 33.
According to the present invention, the first valve 331 can instruct the first valve 331 according to the measured second density value and second discharge value of the drilling fluid, thereby controlling the opening and closing of the first valve 331 to adjust the flow rate of the drilling fluid to the outside of the housing 10. Specifically, when the second density value and the second displacement value are lower than the second density threshold value and the second displacement threshold value, respectively, the first valve 331 is opened, and the separated drilling fluid directly flows to the outside of the casing 10 through the second passage 32. When the second density value and the second displacement value are higher than the second density threshold value and the second displacement threshold value, respectively, the first valve 331 is closed, and the separated drilling fluid flows to the second centrifuge 22 through the second passage 32 and is separated again.
According to the present invention, as shown in fig. 1, the channel assembly 30 further includes a fifth channel 35, a sixth channel 36, and a seventh channel 37. Wherein the fifth channel 35 communicates with the inlet 1 of the housing 10; the sixth channel 36 communicates with the first centrifuge 21; the seventh passage 37 communicates with the outlet 2 of the housing 10. Further, an intersection 39 is formed between the fifth passage 35, the sixth passage 36, and the seventh passage 37. Through this intersection 39, the drilling fluid forms a split, a part of which flows through the sixth channel 36 into the first centrifuge 21 and a part of which flows through the seventh channel 37 and the outlet 2 to the outside of the housing 10. The function of which will be described in detail below.
In one embodiment of the present invention, the fifth channel 35 is provided with a second sensor 351. The second sensor 351 includes, but is not limited to, a density sensor and a displacement sensor. The second sensor 351 is configured to detect the density and displacement of the drilling fluid in the fifth passage 35 in real time, and is configured to measure a first density value and a first displacement value of the drilling fluid.
In one embodiment of the present invention, a third valve 361 is provided on the sixth channel 36. The third valve 361 controls the flow rate of the drilling fluid flowing to the first centrifuge 21 by controlling the opening and closing of the sixth passage 36.
In one embodiment of the invention, a fourth valve 371 is provided on the seventh channel 37. The fourth valve 371 controls the flow rate of the drilling fluid to the outside of the housing 10 by controlling the opening and closing of the seventh passage 37.
According to the invention, the second sensor 351 is capable of commanding the third valve 361 or the fourth valve 371 according to the measured first density value and first discharge value of the drilling fluid. Specifically, when the first density value and the first displacement value are above the first density threshold value and the first displacement threshold value, respectively, the third valve 361 is opened and the fourth valve 371 is closed, and drilling fluid flows through the sixth passage 36 to the first centrifuge 21. When the first density value and the first displacement value are lower than the first density threshold value and the first displacement threshold value, respectively, the third valve 361 is opened, the fourth valve 371 is opened, and the drilling fluid flows to the outside of the casing 10 through the seventh passage 37.
In one embodiment of the present invention, the first recovery tank 40 is provided outside the first centrifuge 21. The second centrifuge 22 is provided with a second recovery tank 41 at the outside thereof. The first recovery tank 40 and the second recovery tank 41 are each for receiving solid matter, such as barite, cuttings, etc., after separation of the drilling fluid.
In one embodiment of the present invention, a first rotational speed sensor 212 is provided between the first centrifuge 21 and the first motor 211 for measuring the rotational speed of the first centrifuge 21 in real time. The second centrifuge 22 and the second motor 221 are used for measuring the rotation speed of the second centrifuge 22 in real time. This is well known to those skilled in the art and will not be described in detail.
According to a second aspect of the present invention, there is provided a method for treating drilling fluid by means of an apparatus 100 for treating drilling fluid, comprising the steps of:
s1, measuring a first density value and a first discharge value of the drilling fluid in the fifth channel 35 through the second sensor 351.
S2, judging whether the drilling fluid needs to be processed or not according to the first density value and the first displacement value.
When the first density value and the first displacement value are smaller than the first density threshold value and the first displacement threshold value, respectively, the drilling fluid does not need to be treated, the third valve 361 is closed, the fourth valve 371 is opened, and the drilling fluid directly flows to the outside of the casing 10 through the seventh passage 37.
When the first density value and the first displacement value are greater than the first density threshold value and the first displacement threshold value, respectively, the drilling fluid needs to be processed, the third valve 361 is opened, the fourth valve 371 is closed, and the drilling fluid flows to the first centrifuge 21 through the sixth channel 36 for separation processing.
And S3, adjusting the rotating speed of the first centrifugal machine 21 through the first motor 211 so as to enable the first centrifugal machine to enter an operating state.
S4, measuring a second density value and a second discharge value of the drilling fluid separated from the first centrifugal machine 21 through the first sensor 311.
S5, judging whether the drilling fluid needs to be processed or not according to the second density value and the second displacement value.
When the second density value and the second displacement value are smaller than the second density threshold value and the second displacement threshold value, respectively, the drilling fluid does not need to be treated, the first valve 331 is opened, and the separated drilling fluid flows to the outside of the casing 10 through the first passage 31 and the third passage 33 in sequence.
When the second density value and the second displacement value are greater than the second density threshold value and the second displacement threshold value respectively, the drilling fluid needs to be processed, the first valve 331 is closed, and the separated drilling fluid flows to the second centrifuge 22 through the first channel 31 and the second channel 32 in sequence for re-separation processing.
S6, the rotation speed of the second centrifugal machine 22 is adjusted through the second motor 221, so that the second centrifugal machine enters an operating state.
And S7, measuring a third density value and a third discharge value of the drilling fluid separated from the second centrifugal machine 22 by the third sensor 381, and simultaneously, enabling the separated drilling fluid to flow to the outside of the casing 10 through the eighth channel 38.
And S8, comparing the second displacement value with the third displacement value, and adjusting the flow rate of the drilling fluid flowing into the second centrifugal machine 22 by adjusting the opening of the second valve 341 so as to match the processing capacities of the first centrifugal machine 21 and the second centrifugal machine 22.
That is, when the second discharge value is less than or equal to the third discharge value, the processing capacities of the first centrifuge 21 and the second centrifuge 22 are matched, and the opening degree of the second valve 341 is required to be maintained at this time. When the second discharge value is greater than the third discharge value, the opening of the second valve 341 is increased to allow more separated drilling fluid to flow back into the first centrifuge 21 through the fourth channel 34. In this way, the flow rate of the drilling fluid flowing from the first centrifuge 21 to the second centrifuge 22 is always less than or equal to the maximum receiving amount of the drilling fluid by the second centrifuge 22, so that the device 100 for treating the drilling fluid is smoother and more efficient in the working process.
According to the invention, the flow rate of the drilling fluid flowing back to the first centrifugal machine 21 from the fourth channel 34 is controlled through the second valve 341, so that the processing capacity of the first centrifugal machine 21 and the second centrifugal machine 22 on the drilling fluid is adjusted, the device 100 for processing the drilling fluid can work more smoothly, and the overall processing efficiency is improved.
The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto. Modifications and variations may readily be made by those skilled in the art within the scope of the present disclosure, and such modifications and variations are intended to be included within the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.

Claims (11)

1. An apparatus (100) for treating a drilling fluid, comprising:
a housing (10);
a centrifuge assembly (20) disposed within the housing (10), the centrifuge assembly (20) comprising a first centrifuge (21) in communication with the inlet (1) of the housing (10) and configured to receive drilling fluid containing impurities, and a second centrifuge (22); and
a channel assembly (30) comprising a first channel (31) for receiving separated drilling fluid from the first centrifuge (21), a second channel (32) in communication with the second centrifuge (22), and a third channel (33) in communication with the second centrifuge (22) with the outlet (2) of the housing (10),
wherein the channel assembly (30) is configured to split the separated drilling fluid flowing from the first channel (31), wherein a portion of the drilling fluid is transported to the second centrifuge (22) for re-separation via the second channel (32) and a portion of the drilling fluid flows outside the housing (10) via the third channel (33).
2. Device for treating drilling fluid according to claim 1, characterized in that the first channel (31) is provided with a first sensor (311), the third channel (33) comprises a first valve (331),
the first sensor (311) is configured to monitor in real time the flow and density of the separated drilling fluid in the first channel (31) and to issue instructions according to the measured values; the first valve (331) is configured to act on the third passage (33) in response to a command of the first sensor (311), thereby controlling a flow rate of drilling fluid discharged to the outside of the housing (10).
3. The device for treating drilling fluid according to claim 1 or 2, characterized in that the rotational speed of the first centrifuge (21) is lower than the rotational speed of the second centrifuge (22).
4. A device for treating drilling fluid according to claim 3, wherein the channel assembly (30) further comprises a fourth channel (34) having one end communicating with the first channel (31) and the other end communicating with the first centrifuge (21) such that a portion of the separated drilling fluid in the first channel (31) can be returned to the first centrifuge (21) through the fourth channel (34).
5. An apparatus for treating drilling fluid according to claim 4, wherein the second centrifuge (22) is connected with an eighth channel (38) communicating with the outlet (2), the eighth channel (38) being provided with a third sensor (381),
the third sensor (381) is configured to monitor in real time the flow and density of the separated drilling fluid in the eighth passage (38) and to issue instructions based on the measured values.
6. The apparatus for treating drilling fluid according to claim 5, wherein the fourth passage (34) comprises a second valve (341),
the second valve (341) is configured to act on the fourth channel (34) in response to instructions from the first sensor (311) and the third sensor (381) to return a portion of the drilling fluid in the first channel (31) to the first centrifuge (21) through the fourth channel (34) to match the processing capacity of the first centrifuge (21) to that of the second centrifuge (22).
7. The device for treating drilling fluid according to claim 6, wherein the channel assembly (30) further comprises a fifth channel (35) communicating with the inlet (1), a sixth channel (36) communicating with the first centrifuge (21), and a seventh channel (37) communicating with the outlet (2), wherein the fifth channel (35), the sixth channel (36) and the seventh channel (37) are formed with an intersection point (39).
8. The device for treating drilling fluid according to claim 7, characterized in that the fifth channel (35) is provided with a second sensor (351); a third valve (361) is arranged in the sixth channel (36); a fourth valve (371) is arranged in the seventh channel (37),
the second sensor (351) is configured to monitor in real time the flow rate and density of the drilling fluid in the fifth channel (35) and to instruct, based on the measured value, to feed the drilling fluid containing impurities to the first centrifuge (21) through the sixth channel (36) acting on the third valve (361) or to feed the drilling fluid to the outside of the casing (10) through the seventh channel (37) acting on the fourth valve (371).
9. The apparatus for treating drilling fluid according to claim 8, wherein the first centrifuge (21) and the second centrifuge (22) are connected with a first recovery tank (40) and a second recovery tank (41), respectively, for receiving separated solids.
10. A method for treating a drilling fluid, the method being carried out using an apparatus (100) for treating a drilling fluid according to any one of claims 1 to 9, comprising the steps of:
s1, measuring and judging a first density value and a first discharge value of drilling fluid through the second sensor (351);
s2, when the first density value and the first displacement value are respectively lower than a first density threshold value and a first displacement threshold value, the third threshold door (361) is closed, the fourth threshold door (371) is opened, and drilling fluid flows to the outside of the shell (10) through the seventh channel (37); when the first density value and the first displacement value are respectively higher than the first density threshold value and the first displacement threshold value, the third threshold door (361) is opened, the fourth threshold door (371) is closed, and drilling fluid flows to the first centrifugal machine (21) through the sixth channel (36);
s3, measuring and judging a second density value and a second discharge value of the separated drilling fluid from the first centrifugal machine (21) through the first sensor (311);
s4, when the second density value and the second displacement value are respectively lower than a second density threshold value and a second displacement threshold value, the first valve (331) is opened, and separated drilling fluid flows to the outside of the shell (10) through the third channel (33); when the second density value and the second displacement value are higher than the second density threshold value and the second displacement threshold value respectively, the separated drilling fluid flows to the second centrifugal machine (22) through the second channel (32) for separation again;
s5, measuring a third density value and a third discharge value of the separated drilling fluid from the second centrifugal machine (22) through the third sensor (381);
s6, the separated drilling fluid finally flows to the outside of the shell (10) through the eighth channel (38).
11. The method for treating drilling fluid of claim 10, further comprising the step of adjusting: the second displacement value and the third displacement value are compared, and the opening degree of the second valve (341) is adjusted to adjust the flow rate of the drilling fluid flowing into the second centrifugal machine (22), so that the processing capacities of the first centrifugal machine (21) and the second centrifugal machine (22) are matched.
CN202210042949.2A 2022-01-14 2022-01-14 Device for treating drilling fluid and method for treating drilling fluid Pending CN116474953A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210042949.2A CN116474953A (en) 2022-01-14 2022-01-14 Device for treating drilling fluid and method for treating drilling fluid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210042949.2A CN116474953A (en) 2022-01-14 2022-01-14 Device for treating drilling fluid and method for treating drilling fluid

Publications (1)

Publication Number Publication Date
CN116474953A true CN116474953A (en) 2023-07-25

Family

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Application Number Title Priority Date Filing Date
CN202210042949.2A Pending CN116474953A (en) 2022-01-14 2022-01-14 Device for treating drilling fluid and method for treating drilling fluid

Country Status (1)

Country Link
CN (1) CN116474953A (en)

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