CN115825330A - Automatic drilling fluid detection and cleaning mechanism and method - Google Patents
Automatic drilling fluid detection and cleaning mechanism and method Download PDFInfo
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- CN115825330A CN115825330A CN202111086707.5A CN202111086707A CN115825330A CN 115825330 A CN115825330 A CN 115825330A CN 202111086707 A CN202111086707 A CN 202111086707A CN 115825330 A CN115825330 A CN 115825330A
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Abstract
The invention provides a drilling fluid automatic detection and cleaning mechanism and a method, wherein the mechanism comprises a drilling fluid tank, a constant pressure pipeline, a sewage discharge pipeline, a detection system and a cleaning system; one side of the constant pressure pipeline is connected with an outlet at one side of the drilling fluid groove, and the other end of the constant pressure pipeline is connected with an inlet at the upper end of the drilling fluid groove; the detection system comprises a fluid loss detection device, a rotational viscosity detection device and a density detection device, wherein the fluid loss detection device, the rotational viscosity detection device and the density detection device are arranged between the constant pressure pipeline and the sewage discharge pipeline in parallel; the cleaning system cleans the detection system through the control system; and a turbidity sensor and a humidity sensor are arranged at the outlet of the sewage discharge pipeline. The invention realizes the measurement of the low-temperature and low-pressure filtration loss, the density and the rotational viscosity of the drilling fluid, saves labor and improves the data monitoring efficiency of the drilling fluid. The invention effectively cleans and dries the detection system and the pipeline thereof through the cleaning system.
Description
Technical Field
The invention relates to the technical field of petroleum drilling fluid measurement, in particular to a mechanism and a method for automatically detecting and cleaning drilling fluid.
Background
The real-time supervision of present drilling fluid flow parameter usually needs operating personnel regularly to read the measuring instrument of drilling fluid parameter regularly, record current numerical value, on the one hand, make mistakes easily and produce reading error, on the other hand, need consume a large amount of manpower and materials, it is efficient and the erroneous judgement rate is high to read, simultaneously because the drilling fluid has corrosivity, the adsorptivity is higher, usually need manual cleaning, efficiency is lower, and well site water source lacks, the dry pumping phenomenon easily appears in the water pump, quality of water is relatively poor, there is the pipeline blocking phenomenon impurity is more, lead to detecting system to wash unclean, cause the condition of test parameter deviation to take place.
Disclosure of Invention
In order to solve the problems that the existing manual cleaning efficiency is low and the detection system is not cleaned completely, so that the deviation of the test parameters is large, the invention provides the automatic detection and cleaning mechanism and the automatic detection and cleaning method for the drilling fluid.
The technical scheme adopted by the invention is as follows:
an automatic detection and cleaning mechanism for drilling fluid comprises a drilling fluid tank, a constant pressure pipeline, a sewage discharge pipeline, a detection system and a cleaning system; one side of the constant pressure pipeline is connected with an outlet at one side of the drilling fluid groove, and the other end of the constant pressure pipeline is connected with an inlet at the upper end of the drilling fluid groove; the detection system comprises a fluid loss detection device, a rotational viscosity detection device and a density detection device, wherein the fluid loss detection device, the rotational viscosity detection device and the density detection device are arranged between the constant pressure pipeline and the sewage discharge pipeline in parallel; the cleaning system cleans the detection system through the control system; and a turbidity sensor and a humidity sensor are arranged at the outlet of the sewage discharge pipeline.
The fluid loss detection device comprises a fluid loss meter and a drilling fluid container cylinder body with the capacity of 240 ml; the fluid loss meter is arranged below a drilling fluid container cylinder body, one side of the drilling fluid container cylinder body is provided with a first liquid level detection port and a first pressure detection port, the other side of the drilling fluid container cylinder body is provided with a first liquid level detection port, and the first liquid level detection port is lower than the first liquid level detection port and higher than the first pressure detection port; first liquid level detection mouth and constant voltage tube coupling, first liquid level detection mouth and first pressure detection mouth all are connected with sewage pipes.
The first liquid level detection port is provided with a high-pressure nozzle, and the opening of the high-pressure nozzle is arranged at a certain inclination angle in the drilling fluid container cylinder body.
The included angle between the inclination angle and the horizontal plane is more than 30 degrees.
The density detection device is of a reducing pipe structure with a large upper part and a small lower part, the length of the reducing pipe is not less than 520mm, and the maximum diameter position of the reducing pipe is not more than 50mm; a second pressure detection port is arranged at the lower part of one side of the rotary viscosity detection device, a second liquid level detection port is arranged at the upper part of the rotary viscosity detection device, a second liquid level detection port is arranged at the bottom of the rotary viscosity detection device, and the second pressure detection port is higher than the second liquid level detection port; the second pressure detection port is connected with a constant pressure pipeline, and the second liquid level detection port is connected with a sewage discharge pipeline.
The cleaning system comprises a cleaning device, an atomization spraying device, a compressed air heating device and a dry gas supply device, wherein the cleaning device, the compressed air heating device and the dry gas supply device are connected in parallel and then connected to a constant-pressure pipeline through a three-way valve, and the atomization spraying device is connected to the constant-pressure pipeline at the outlet end of the three-way valve in series.
The cleaning device comprises a water tank and a water suction pump, and the water suction pump is connected with the outlet end of the water tank; and the outlet pipelines of the cleaning device, the compressed air heating device and the dry gas supply device are all matched with on-off valves.
The atomization injection device comprises a flow regulating valve; the compressed air heating device is an air compressor with a heater; the dry gas supply device is a high-pressure nitrogen gas supply tank.
The upper end of the density detection device is provided with a third liquid level detection port, and the third liquid level detection port is connected with a sewage discharge pipeline; the lower end of the density detection device is provided with a third pressure detection port, and the third pressure detection port is connected with a constant pressure pipeline; and a flow sensor is arranged on the inner side wall of the density detection device.
A method for automatically detecting and cleaning drilling fluid comprises the following specific steps:
s1, an initial stage: all the on-off valves, the fluid loss detection device, the rotational viscosity detection device and the density detection device are in a closed state;
s2, a detection stage: opening pressure detection ports and liquid level detection ports of the fluid loss detection device, the rotary viscosity detection device and the density detection device, conveying the liquid to be detected in the drilling fluid tank to the interiors of the fluid loss detection device, the rotary viscosity detection device and the density detection device through a constant pressure pipeline, and closing the pressure detection ports and the liquid level detection ports of the fluid loss detection device and the rotary viscosity detection device after the liquid in the fluid loss detection device and the rotary viscosity detection device reaches the volume required by measurement to start detection;
s3, after the detection time is up, opening liquid level detection ports of the fluid loss detection device and the rotary viscosity detection device, and discharging waste liquid through a sewage discharge pipeline, wherein in the detection process, the liquid level detection port of the density detection device is always in an open state;
s4, high-pressure water washing: after the detection is finished, closing the outlet of a drilling fluid groove, the fluid loss detection device, the rotary viscosity detection device and the fluid level detection ports of the density detection device, opening an on-off valve of the cleaning device, flushing the fluid loss detection device, the rotary viscosity detection device and the density detection device through a constant pressure pipeline, and after the flushing time is up, opening the fluid level detection ports of the fluid loss detection device, the rotary viscosity detection device and the density detection device to form natural flow;
s5, atomizing and spraying: after the water washing time is up, atomizing, spraying and cleaning the inside of the fluid loss detection device, the rotational viscosity detection device and the density detection device by adjusting a flow regulating valve on a constant pressure pipeline;
s6, primary drying: closing the cleaning device, opening the compressed air heating device, conveying the heated compressed air into the fluid loss detection device, the rotational viscosity detection device and the density detection device through the constant pressure pipeline, and starting to perform primary drying work on the fluid loss detection device, the rotational viscosity detection device and the density detection device, the constant pressure pipeline and the sewage discharge pipeline;
s7, secondary drying: and after the first drying reaches the designated time, closing the compressed air heating device, opening the dry gas supply device, conveying the dry gas into the fluid loss detection device, the rotary viscosity detection device and the density detection device through the constant pressure pipeline, starting to perform secondary drying work on the fluid loss detection device, the rotary viscosity detection device and the density detection device, the constant pressure pipeline and the sewage discharge pipeline, and after the secondary drying work time reaches the designated time, closing the dry gas supply device to finish the cleaning work.
The invention has the beneficial effects that:
according to the invention, the fluid loss detection device, the density detection device and the rotary viscosity detection device are connected to the output constant-pressure pipeline of the drilling fluid tank, so that the measurement of the low-temperature low-pressure fluid loss, the density and the rotary viscosity of the drilling fluid is realized, the manpower is saved, and the data monitoring efficiency of the drilling fluid is improved.
The cleaning system of the invention is cleaned and dried in four stages of clean water washing, atomization spraying, primary drying and secondary drying, thereby improving the cleaning efficiency.
According to the invention, the cleaning steps are adjusted at any time by acquiring the real-time detection parameters of the turbidity sensor and the humidity sensor, so that the cleaning efficiency of the drilling fluid detection system is improved.
The following will be further described with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic view of a pipeline connection of an automatic drilling fluid detection and cleaning mechanism disclosed by the invention.
FIG. 2 is a flow chart of a detection and cleaning method of an automatic drilling fluid detection and cleaning mechanism disclosed by the invention.
In the figure: the reference signs are: 1. a drilling fluid bath; 2. a water tank; 3. an air compressor with a heater; 4. a dry gas supply device; 5-1, constant pressure pipeline; 5-2, a circulating pipeline; 6-1, a drilling fluid container cylinder body; 6-2, a fluid loss meter; 6-3, a first liquid level detection port; 6-4, a first pressure detection port; 6-5, a first flow detection port; 7. a rotational viscosity detection device; 7-1, a second pressure detection port; 7-2, a second liquid level detection port; 7-3, a second flow detection port; 8. a density detection device; 8-1, a third pressure detection port; 8-2, a third liquid level detection port; 9. a flow sensor; 9-1, a first flow sensor; 9-2, a second flow sensor; 10. a turbidity sensor; 11. a humidity sensor; 12. a flow regulating valve; 13. a three-way valve; 14. an on-off valve; 15. a water pump.
Detailed Description
Example 1:
in order to solve the problems that the existing manual cleaning efficiency is low and the detection system is not cleaned completely, so that the deviation of the test parameters is large, the invention provides the automatic drilling fluid detection and cleaning mechanism and the automatic drilling fluid detection and cleaning method shown in the figures 1 and 2.
An automatic detection and cleaning mechanism for drilling fluid comprises a drilling fluid tank 1, a constant pressure pipeline 5-1, a sewage discharge pipeline 5-2, a detection system and a cleaning system; one side of the constant pressure pipeline 5-1 is connected with an outlet at one side of the drilling fluid tank 1, and the other end of the constant pressure pipeline is connected with an inlet at the upper end of the drilling fluid tank 1; the detection system comprises a fluid loss detection device 6, a rotational viscosity detection device 7 and a density detection device 8, wherein the fluid loss detection device 6, the rotational viscosity detection device 7 and the density detection device 8 are arranged between the constant pressure pipeline 5-1 and the sewage discharge pipeline 5-2 in parallel; the cleaning system cleans the detection system through the control system; and a turbidity sensor 10 and a humidity sensor 11 are arranged at the outlet of the sewage discharge pipeline 5-2.
In order to realize the monitoring of the cleaning degree and the drying degree of the filtration detection device 6, the rotational viscosity detection device 7, the density detection device 8 and related pipelines, a humidity sensor 11 for detecting humidity and a turbidity sensor 10 for detecting the turbidity of discharged liquid are arranged at the outlet of the sewage discharge pipeline 5-2.
According to the invention, the fluid loss detection device 6, the density detection device 7 and the rotary viscosity detection device 8 are connected to the constant pressure pipeline 5-1 output by the drilling fluid tank 1, so that the measurement of the low-temperature and low-pressure fluid loss, the density and the rotary viscosity of the drilling fluid is realized, the labor is saved, and the data monitoring efficiency of the drilling fluid is improved.
Example 2:
based on the embodiment 1, in this embodiment, preferably, the fluid loss detection device 6 includes a fluid loss meter 6-2 and a drilling fluid container cylinder 6-1 with a capacity of 240 ml; the fluid loss meter 6-2 is arranged below a drilling fluid container cylinder body 6-1, one side of the drilling fluid container cylinder body 6-1 is provided with a first liquid level detection port 6-3 and a first pressure detection port 6-4, the other side of the drilling fluid container cylinder body is provided with a first flow detection port 6-5, and the first flow detection port 6-5 is lower than the first liquid level detection port 6-3 and higher than the first pressure detection port 6-4; the first flow detection port 6-5 is connected with the constant pressure pipeline 5-1, and the first liquid level detection port 6-3 and the first pressure detection port 6-4 are both connected with the sewage discharge pipeline 5-2.
As shown in FIG. 1, the fluid loss detection device 6 of the present invention comprises a drilling fluid container cylinder 6-1 and a fluid loss meter 6-2, wherein the fluid loss meter 6-2 is disposed at the bottom of the drilling fluid container cylinder 6-1 and is used for measuring the leakage fluid in the drilling fluid container cylinder 6-1. The volume of the drilling fluid container cylinder 6-1 of the invention is 240ml, and the volume of the drilling fluid container cylinder 6-1 of the invention is preferably 240ml, 220ml, 200ml, 190ml, 180ml, 150ml. The working principle of the fluid loss detection device 6 of the present invention is the conventional one, and will not be described herein.
The connecting pipelines at the first liquid level detection port 6-3, the first pressure detection port 6-4 and the first flow detection port 6-5 are all provided with on-off valves 14 for controlling the on-off of cleaning liquid or drying gas at the first liquid level detection port 6-3, the first pressure detection port 6-4 and the first flow detection port 6-5.
Preferably, a high-pressure nozzle is arranged at the first flow detection port 6-5, and an opening of the high-pressure nozzle is arranged at a certain inclination angle towards the interior of the drilling fluid container cylinder 6-1.
Preferably, the angle between the horizontal plane and the inclination angle is greater than 30 degrees.
In the invention, the high-pressure nozzles are arranged in the drilling fluid container cylinder 6-1 at a certain inclination angle, the included angle between the inclination angle and the horizontal plane is more than 30 degrees, and the inclination angle of the invention is preferably 30 degrees, 45 degrees and 60 degrees. The selection of the inclination angle needs to ensure that vortex oscillation can be formed after the flushing liquid enters the interior of the drilling fluid container cylinder body 6-1, so that the cleaning efficiency of the drilling fluid container cylinder body 6-1 is improved.
Preferably, the density detection device 7 is a reducer pipe structure with a large top and a small bottom, the length of the reducer pipe is not less than 520mm, and the maximum diameter of the reducer pipe is not more than 50mm; a second pressure detection port 7-1 is arranged at the lower part of one side of the rotational viscosity detection device 7, a second flow detection port 7-3 is arranged at the upper part of the rotational viscosity detection device, a second liquid level detection port 7-2 is arranged at the bottom of the rotational viscosity detection device, and the second pressure detection port 7-1 is higher than the second liquid level detection port 7-2; the second pressure detection port 7-1 is connected with a constant pressure pipeline 5-1, and the second liquid level detection port 7-2 and the second flow detection port 7-3 are connected with a sewage discharge pipeline 5-2.
The connecting pipelines at the second flow detection port 7-3, the second liquid level detection port 7-2 and the second pressure detection port 7-1 are respectively provided with an on-off valve 14 for controlling the on-off of the cleaning liquid or the drying gas at the second flow detection port 7-3, the second liquid level detection port 7-2 and the second pressure detection port 7-1. The working principle of the rotational viscosity detection device 7 of the present invention is the conventional principle, and is not described herein.
Preferably, the cleaning system comprises a cleaning device, an atomizing and spraying device 12, a compressed air heating device 3 and a dry gas supply device 4, the cleaning device, the compressed air heating device 3 and the dry gas supply device 4 are connected in parallel and then are connected to a constant pressure pipeline 5-1 through a three-way valve 13, and the atomizing and spraying device 12 is connected in series to the constant pressure pipeline 5-1 at the outlet end of the three-way valve 13.
Preferably, the cleaning device comprises a water tank 2 and a water pump 15, and the water pump 15 is connected with the outlet end of the water tank 2; and the outlet pipelines of the cleaning device, the compressed air heating device 3 and the dry gas supply device 4 are all matched with on-off valves 14.
In the invention, the water in the water tank 2 is pumped by the water pump 15 and then is conveyed to the fluid loss detection device 6, the rotational viscosity detection device 7 and the density detection device 8 through the three-way valve 13 and the constant pressure pipeline 5-1, so that the high-pressure water washing work of the fluid loss detection device 6, the rotational viscosity detection device 7 and the density detection device 8 is realized.
Preferably, the atomizing spray device 12 includes a flow regulating valve; the compressed air heating device 3 is an air compressor with a heater; the dry gas supply device 4 is a high-pressure nitrogen gas supply tank.
In the invention, the flow regulating valve 12 is arranged on the constant pressure pipeline 5-1, and the high-pressure water pumped by the water suction pump 15 is atomized and then conveyed into the fluid loss detection device 6, the rotational viscosity detection device 7 and the density detection device 8 by regulating the opening size of the flow regulating valve 12, so that the fluid loss detection device 6, the rotational viscosity detection device 7 and the density detection device 8 are atomized and cleaned.
The compressed air heating device 3 is preferably an air compressor with a heater, and can also be used after being connected with the heater through a blower, and the outlet of the air compressor with the heater provides heated compressed air for the fluid loss detection device 6 and the rotational viscosity detection device 7 through the constant pressure pipeline 5-1, so that the fluid loss detection device 6, the rotational viscosity detection device 7, the constant pressure pipeline 5-1 and the sewage discharge pipeline 5-2 can be dried at one time. Meanwhile, an output pipeline of the air compressor with the heater is provided with an on-off valve 14 for controlling the on-off of compressed air.
In the invention, the dry gas supply device 4 is a high-pressure nitrogen supply tank, the high-pressure nitrogen output by the high-pressure nitrogen supply tank is conveyed into the filtration detection device 6, the rotational viscosity detection device 7 and the sewage discharge pipeline 5-2 through the three-way valve 13 and the constant-pressure pipeline 5-1, so that the secondary drying of the filtration detection device 6, the rotational viscosity detection device 7 and the sewage discharge pipeline 5-2 is realized, and meanwhile, in order to control the on-off of the high-pressure nitrogen, the on-off valve 14 is arranged on the output pipeline of the high-pressure nitrogen supply tank.
All the on-off valves 14 in the present invention are solenoid valves or shut-off valves, and the on-off valves 14 in the present invention are preferably solenoid valves. The electromagnetic valve is electrically connected with the control system. In the present invention, the control system is the prior art, and further description will not be provided in the present invention.
In the invention, a control system is a controller, the controller is preferably an industrial personal computer, a first flow sensor 9-1, a second flow sensor 9-2, a humidity sensor 11 and a turbidity sensor 10 are connected with the input end of the industrial personal computer, and all the water pumps 15, the air compressor 3 with a heater, the three-way valve 13, the flow regulating valve 12 and all the on-off valves 14 are connected with the output end of the industrial personal computer.
The industrial personal computer can control the corresponding on-off valve 14 to be opened or closed according to the humidity sensor 11 and the turbidity sensor 10.
The cleaning system can control the on-off valves 14 to switch by presetting the operation time of each stage in the industrial personal computer, and can also adjust the cleaning steps at any time by acquiring real-time detection parameters of the turbidity sensor 10 and the humidity sensor 11 through the industrial personal computer, thereby improving the cleaning efficiency of the drilling fluid testing instrument.
Preferably, the upper end of the density detection device 8 is provided with a third liquid level detection port 8-2, and the third liquid level detection port 8-2 is connected with a sewage discharge pipeline 5-2; the lower end of the density detection device 8 is provided with a third pressure detection port 8-1, and the third pressure detection port 8-1 is connected with a constant pressure pipeline 5-1; and a flow sensor 9 is arranged on the inner side wall of the density detection device 8.
In the invention, the flow sensor 9 comprises a first flow sensor 9-1 and a second flow sensor 9-2, and the first flow sensor 9-1 and the second flow sensor 9-2 are arranged at the positions 15mm away from the upper end and the lower end in the density detection device 8 respectively and are used for measuring the liquid pressure in the density detection device 8.
Furthermore, on-off valves 14 are arranged on connecting pipelines of the third liquid level detection port 8-2 and the third pressure detection port 8-1 and are used for controlling the on-off of cleaning liquid or drying gas at the third liquid level detection port 8-2 and the third pressure detection port 8-1.
As shown in FIG. 2, the invention also provides a method for the automatic drilling fluid detection and cleaning mechanism, which comprises an initial stage, a detection stage and a cleaning stage, wherein the cleaning stage comprises high-pressure water washing, atomized spraying, primary drying and secondary drying.
The invention provides a method for automatically detecting and cleaning drilling fluid, which comprises the following specific steps:
s1, an initial stage: each of the on-off valves 14, the fluid loss detection device 6, the rotational viscosity detection device 7, and the density detection device 8 is in a closed state;
s2, a detection stage: opening pressure detection ports and flow detection ports of a fluid loss detection device 6, a rotational viscosity detection device 7 and a density detection device 8, conveying the liquid to be detected in a drilling fluid tank 1 to the interiors of the fluid loss detection device 6, the rotational viscosity detection device 7 and the density detection device 8 through a constant pressure pipeline 5-1, and closing the pressure detection ports and the flow detection ports of the fluid loss detection device 6 and the rotational viscosity detection device 7 after the liquid in the fluid loss detection device 6 and the rotational viscosity detection device 7 reaches the volume required by measurement to start detection;
s3, after the detection time is up, opening liquid level detection ports of the fluid loss detection device 6 and the rotational viscosity detection device 7, and discharging waste liquid through a sewage discharge pipeline 5-2, wherein in the detection process, the liquid level detection port of the density detection device 8 is always in an open state;
s4, high-pressure water washing: after the detection is finished, closing the outlet of the drilling fluid tank 1, the fluid loss detection device 6, the rotary viscosity detection device 7 and the liquid level detection ports of the density detection device 8, opening the on-off valve 14 of the cleaning device, flushing the fluid loss detection device 6, the rotary viscosity detection device 7 and the density detection device 8 with high-pressure water pumped by the water pump 15 from the water tank 2 through the constant-pressure pipeline 5-1, and opening the liquid level detection ports of the fluid loss detection device 6, the rotary viscosity detection device 7 and the density detection device 8 after the flushing time is up to form natural flow;
s5, atomizing and spraying: after the water washing time is up, atomizing, spraying and cleaning the inside of the fluid loss detection device 6, the rotary viscosity detection device 7 and the density detection device 8 by adjusting a flow regulating valve 12 on the constant pressure pipeline 5-1;
s6, primary drying: closing the cleaning device, opening the compressed air heating device 3, conveying the heated compressed air into the fluid loss detection device 6, the rotational viscosity detection device 7 and the density detection device 8 through the constant pressure pipeline 5-1, and starting primary drying work on the fluid loss detection device 6, the rotational viscosity detection device 7, the density detection device 8, the constant pressure pipeline 5-1 and the sewage discharge pipeline 5-2;
s7, secondary drying: and after the first drying reaches the designated time, closing the compressed air heating device 3, opening the dry gas supply device 4, conveying the dry gas into the fluid loss detection device 6, the rotational viscosity detection device 7 and the density detection device 8 through the constant pressure pipeline 5-1, starting to perform secondary drying work on the fluid loss detection device 6, the rotational viscosity detection device 7, the density detection device 8, the constant pressure pipeline 5-1 and the sewage discharge pipeline 5-2, and closing the dry gas supply device 4 to finish the cleaning work after the secondary drying work time reaches the designated time.
According to the invention, the fluid loss detection device 6, the density detection device 7 and the rotary viscosity detection device 8 are connected to the constant pressure pipeline 5-1 output by the drilling fluid tank 1, so that the measurement of the low-temperature and low-pressure fluid loss, the density and the rotary viscosity of the drilling fluid is realized, the labor is saved, and the data monitoring efficiency of the drilling fluid is improved.
According to the invention, the cleaning device, the atomizing and spraying device 12, the compressed air heating device 3 and the dry gas supply device 4 are arranged, the cleaning device, the compressed air heating device 3 and the dry gas supply device 4 are all connected to the constant pressure pipeline 5-1, the atomizing and spraying device 12 is connected in series to the constant pressure pipeline 5-2, and meanwhile, the on-off valves 14 are matched on the outlet pipelines of the cleaning device, the compressed air heating device 3 and the dry gas supply device 4, so that the whole construction is simple, the operation is convenient, the water washing and gas drying of the filtration loss detection device 6, the density detection device 7 and the rotary viscosity detection device 8 are realized, a dry test environment is thoroughly formed in the filtration loss detection device 6, the density detection device 7 and the rotary viscosity detection device 8 and the pipeline, the cleaning effect is increased, the condition that drilling fluid residues are not cleaned cleanly is avoided, and the accuracy of a drilling fluid detection system is improved.
The invention can timely and accurately measure, transmit and monitor the drilling fluid performance, so that the on-site drilling fluid performance can be timely and accurately transmitted to technical management personnel at all levels, and a decision can be timely made, thereby being convenient for timely adjusting and optimizing the on-site drilling fluid performance.
The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention. The apparatus structure and the method steps thereof, which are not described in detail in the present invention, are prior art and will not be further described in the present invention.
Claims (10)
1. The utility model provides a drilling fluid automated inspection and wiper mechanism which characterized in that: the system comprises a drilling fluid tank (1), a constant pressure pipeline (5-1), a sewage discharge pipeline (5-2), a detection system and a cleaning system; one side of the constant pressure pipeline (5-1) is connected with an outlet at one side of the drilling fluid tank (1), and the other end of the constant pressure pipeline is connected with an inlet at the upper end of the drilling fluid tank (1); the detection system comprises a fluid loss detection device (6), a rotational viscosity detection device (7) and a density detection device (8), wherein the fluid loss detection device (6), the rotational viscosity detection device (7) and the density detection device (8) are arranged between the constant pressure pipeline (5-1) and the sewage discharge pipeline (5-2) in parallel; the cleaning system cleans the detection system through the control system; and a turbidity sensor (10) and a humidity sensor (11) are arranged at the outlet of the sewage discharge pipeline (5-2).
2. The drilling fluid automatic detection and cleaning mechanism of claim 1, characterized in that: the fluid loss detection device (6) comprises a fluid loss meter (6-2) and a drilling fluid container cylinder body (6-1) with the capacity of 240 ml; the fluid loss meter (6-2) is arranged below a drilling fluid container cylinder body (6-1), a first liquid level detection port (6-3) and a first pressure detection port (6-4) are arranged on one side of the drilling fluid container cylinder body (6-1), a first flow detection port (6-5) is arranged on the other side of the drilling fluid container cylinder body, and the first flow detection port (6-5) is lower than the first liquid level detection port (6-3) and higher than the first pressure detection port (6-4); the first flow detection port (6-5) is connected with the constant pressure pipeline (5-1), and the first liquid level detection port (6-3) and the first pressure detection port (6-4) are both connected with the sewage discharge pipeline (5-2).
3. The drilling fluid automatic detection and cleaning mechanism of claim 2, characterized in that: the first flow detection port (6-5) is provided with a high-pressure nozzle, and the opening of the high-pressure nozzle is arranged at a certain inclination angle towards the inside of the drilling fluid container cylinder body (6-1).
4. The automatic drilling fluid detection and cleaning mechanism of claim 3, wherein: the included angle between the inclination angle and the horizontal plane is more than 30 degrees.
5. The drilling fluid automatic detection and cleaning mechanism of claim 1, characterized in that: the density detection device (7) is in a reducer pipe structure with a large upper part and a small lower part, the length of the reducer pipe is not less than 520mm, and the maximum diameter position of the reducer pipe is not more than 50mm; a second pressure detection port (7-1) is arranged at the lower part of one side of the rotary viscosity detection device (7), a second flow detection port (7-3) is arranged at the upper part of the rotary viscosity detection device, a second liquid level detection port (7-2) is arranged at the bottom of the rotary viscosity detection device, and the second pressure detection port (7-1) is higher than the second liquid level detection port (7-2); the second pressure detection port (7-1) is connected with a constant pressure pipeline (5-1), and the second liquid level detection port (7-2) and the second flow detection port (7-3) are connected with a sewage discharge pipeline (5-2).
6. The drilling fluid automatic detection and cleaning mechanism of claim 1, characterized in that: the cleaning system comprises a cleaning device, an atomizing and spraying device (12), a compressed air heating device (3) and a dry gas supply device (4), wherein the cleaning device, the compressed air heating device (3) and the dry gas supply device (4) are connected in parallel and then are connected to a constant pressure pipeline (5-1) through a three-way valve (13), and the atomizing and spraying device (12) is connected to the constant pressure pipeline (5-1) at the outlet end of the three-way valve (13) in series.
7. The automatic drilling fluid detection and cleaning mechanism of claim 6, wherein: the cleaning device comprises a water tank (2) and a water suction pump (15), wherein the water suction pump (15) is connected with the outlet end of the water tank (2); and the outlet pipelines of the cleaning device, the compressed air heating device (3) and the dry gas supply device (4) are all matched with on-off valves (14).
8. The automatic drilling fluid detection and cleaning mechanism of claim 6, wherein: the atomization injection device (12) comprises a flow regulating valve; the compressed air heating device (3) is an air compressor with a heater; the dry gas supply device (4) is a high-pressure nitrogen supply tank.
9. The automatic drilling fluid detecting and cleaning mechanism according to claim 1, wherein: the upper end of the density detection device (8) is provided with a third liquid level detection port (8-2), and the third liquid level detection port (8-2) is connected with a sewage discharge pipeline (5-2); the lower end of the density detection device (8) is provided with a third pressure detection port (8-1), and the third pressure detection port (8-1) is connected with a constant pressure pipeline (5-1); and a flow sensor (9) is arranged on the inner side wall of the density detection device (8).
10. A method for automatically detecting and cleaning drilling fluid is characterized by comprising the following steps: the method comprises the following specific steps:
s1, an initial stage: each on-off valve (14), the fluid loss detection device (6), the rotational viscosity detection device (7) and the density detection device (8) are in a closed state;
s2, a detection stage: opening pressure detection ports and flow detection ports of a fluid loss detection device (6), a rotary viscosity detection device (7) and a density detection device (8), conveying a liquid to be detected in a drilling fluid tank (1) to the interiors of the fluid loss detection device (6), the rotary viscosity detection device (7) and the density detection device (8) through a constant-pressure pipeline (5-1), and closing the pressure detection ports and the flow detection ports of the fluid loss detection device (6) and the rotary viscosity detection device (7) to start detection after the liquid in the fluid loss detection device (6) and the rotary viscosity detection device (7) reaches a volume required by measurement;
s3, after the detection time is up, opening liquid level detection ports of the fluid loss detection device (6) and the rotary viscosity detection device (7), and discharging waste liquid through a sewage discharge pipeline (5-2), wherein in the detection process, the liquid level detection port of the density detection device (8) is always in an open state;
s4, high-pressure water washing: after detection is finished, closing the outlet of a drilling fluid tank (1), the liquid level detection ports of a filter loss detection device (6), a rotary viscosity detection device (7) and a density detection device (8), opening an on-off valve (14) of a cleaning device, flushing the filter loss detection device (6), the rotary viscosity detection device (7) and the density detection device (8) through a constant pressure pipeline (5-1), and opening the liquid level detection ports of the filter loss detection device (6), the rotary viscosity detection device (7) and the density detection device (8) after flushing time is up to form natural flow;
s5, atomizing and spraying: after the water washing time is up, atomizing, spraying and cleaning the inside of the fluid loss detection device (6), the inside of the rotary viscosity detection device (7) and the inside of the density detection device (8) by adjusting a flow regulating valve (12) on the constant pressure pipeline (5-1);
s6, primary drying: closing the cleaning device, opening the compressed air heating device (3), conveying the heated compressed air into the fluid loss detection device (6), the rotational viscosity detection device (7) and the density detection device (8) through the constant pressure pipeline (5-1), and starting to perform primary drying work on the fluid loss detection device (6), the rotational viscosity detection device (7) and the density detection device (8), the constant pressure pipeline (5-1) and the sewage discharge pipeline (5-2);
s7, secondary drying: after the first drying reaches the designated time, the compressed air heating device (3) is closed, the dry gas supply device (4) is opened, the dry gas is conveyed to the filtration loss detection device (6), the rotational viscosity detection device (7) and the density detection device (8) through the constant pressure pipeline (5-1), the second drying operation is carried out on the filtration loss detection device (6), the rotational viscosity detection device (7) and the density detection device (8), the constant pressure pipeline (5-1) and the sewage discharge pipeline (5-2), and after the second drying operation time reaches the designated time, the dry gas supply device (4) is closed to finish the cleaning operation.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117147379A (en) * | 2023-08-10 | 2023-12-01 | 四川维泰科创石油设备制造有限公司 | Intelligent viscosity monitoring method and system thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117147379A (en) * | 2023-08-10 | 2023-12-01 | 四川维泰科创石油设备制造有限公司 | Intelligent viscosity monitoring method and system thereof |
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