CN112748047A - Device and method for measuring viscosity of drilling fluid under high temperature and high pressure - Google Patents
Device and method for measuring viscosity of drilling fluid under high temperature and high pressure Download PDFInfo
- Publication number
- CN112748047A CN112748047A CN202011526546.2A CN202011526546A CN112748047A CN 112748047 A CN112748047 A CN 112748047A CN 202011526546 A CN202011526546 A CN 202011526546A CN 112748047 A CN112748047 A CN 112748047A
- Authority
- CN
- China
- Prior art keywords
- pressure
- temperature
- viscosity
- value
- rotating speed
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 68
- 238000005553 drilling Methods 0.000 title claims abstract description 41
- 239000012530 fluid Substances 0.000 title claims abstract description 40
- 238000005259 measurement Methods 0.000 claims abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 238000004891 communication Methods 0.000 claims abstract description 16
- 230000008569 process Effects 0.000 claims description 41
- 230000008859 change Effects 0.000 claims description 40
- 238000005070 sampling Methods 0.000 claims description 35
- 238000012544 monitoring process Methods 0.000 claims description 26
- 238000001514 detection method Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 4
- KPLQYGBQNPPQGA-UHFFFAOYSA-N cobalt samarium Chemical compound [Co].[Sm] KPLQYGBQNPPQGA-UHFFFAOYSA-N 0.000 claims description 4
- 230000003993 interaction Effects 0.000 claims description 4
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 4
- 150000002910 rare earth metals Chemical class 0.000 claims description 4
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000000691 measurement method Methods 0.000 claims 1
- 238000012360 testing method Methods 0.000 description 14
- 230000002159 abnormal effect Effects 0.000 description 9
- 230000005856 abnormality Effects 0.000 description 9
- 230000000630 rising effect Effects 0.000 description 9
- 208000027418 Wounds and injury Diseases 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 208000014674 injury Diseases 0.000 description 4
- 230000008054 signal transmission Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 230000035772 mutation Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000028161 membrane depolarization Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
- G01N11/12—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by measuring rising or falling speed of the body; by measuring penetration of wedged gauges
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The invention relates to the technical field of viscosity measurement, and discloses a device and a method for measuring the viscosity of drilling fluid under high temperature and high pressure, wherein the device comprises a case which is arranged on a fixed support frame, a communication antenna, a display screen, a key and an alarm which are positioned on one side of the display screen are arranged above the case, the case internally comprises a controller, a memory, an angle resolving processor, a magnetoresistive sensor, a signal amplifier and a power supply, two magnetoresistive Wheatstone bridges which form an included angle of 45 degrees with each other are arranged in the magnetoresistive sensor, and the angle range output by the magnetoresistive sensor is +/-90 degrees; a high-pressure closed container is placed under the case and comprises a liquid containing barrel and a top cover, the bottom surface of the top cover is connected with a torsional spring, a special-shaped NS pole pair is sleeved outside the torsional spring, the lower end of the torsional spring is connected with an inner measuring barrel through a connecting shaft, and a concave rotating frame is arranged on the bottom surface of the liquid containing barrel; a driving base is arranged below the high-pressure closed container. The invention has good reliability and repeatability, and can measure the viscosity of the drilling fluid under high temperature and high pressure.
Description
Technical Field
The invention relates to a device and a method for measuring the viscosity of drilling fluid under high temperature and high pressure, belonging to the technical field of viscosity measurement.
Background
The drilling fluid is a general term for various circulating fluids which meet the requirements of drilling work by multiple functions in the drilling process. The drilling fluid is the blood of well drilling, also called drilling flushing fluid, and can be divided into clear water, slurry, non-clay phase flushing fluid, emulsion, foam, compressed air and the like according to the components. In the drilling process, the viscosity of the drilling fluid is a very important performance index, and the temperature and pressure change of the environment around the drilling fluid is large in the drilling process, the temperature change range is generally normal temperature to 260 ℃, and the pressure change range is generally normal pressure to over 200Mpa, so that the measurement of the viscosity parameter of the configured drilling fluid in a high-temperature and high-pressure state is necessary before the drilling operation. However, the existing rotary viscosity meter needs human eyes to observe the rotation angle of the dial, and a transparent window is required to be arranged on the liquid containing cylinder for observation, so that the rotary viscosity meter is obviously not suitable for high-pressure conditions; the measurement function is measured and detected by electronic components, but the electronic components are generally not high-temperature resistant, so a device capable of testing the viscosity of the drilling fluid under the high-temperature and high-pressure environment needs to be designed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a device and a method for measuring the viscosity of drilling fluid under high temperature and high pressure.
The invention relates to a device for measuring the viscosity of drilling fluid under high temperature and high pressure, which comprises: quick-witted case, high pressure closed container and drive base, wherein:
the quick-witted case is installed on the fixed stay frame, and quick-witted case top is provided with communication antenna, display and is located button and the alarm of display one side, and machine incasement portion includes following work module:
a control module: the device comprises a controller and a memory, and is used for controlling and realizing the measurement of the viscosity of the drilling fluid under different pressures, different temperatures and different rotating speeds;
the angle monitoring module: the device comprises an angle calculating processor and a magneto-resistive sensor signal amplifier, wherein the magneto-resistive sensor signal amplifier is used for monitoring the rotation angle of a magnetic field so as to calculate the measured value of the viscosity liquid, two magneto-resistive Wheatstone bridges forming an included angle of 45 degrees with each other are arranged in the magneto-resistive sensor, and the angle range output by the magneto-resistive sensor is +/-90 degrees;
the temperature and pressure monitoring module: monitoring the temperature and the pressure in the high-pressure closed container in real time through data transmitted by the temperature sensor and the pressure sensor and an anomaly detection algorithm;
a remote control module: the controller is used for carrying out information interaction with the remote control terminal through the antenna, receiving an instruction of the remote control terminal and transmitting the measurement data to the remote control terminal;
a motor driving module: the driving motor is driven to work to provide the required rotating speed for the device;
a power supply module: the device comprises a power supply, a power supply and a control circuit, wherein the power supply is used for supplying electric energy required by normal operation to the device;
the high-pressure closed container is placed under the case and comprises a liquid containing barrel and a top cover, the middle part of the bottom surface of the top cover is connected with a torsional spring, a special-shaped NS pole pair is fixedly sleeved outside the torsional spring, the lower end of the torsional spring is fixedly connected with a connecting shaft, the lower end of the connecting shaft is connected with an inner measuring barrel, the special-shaped NS pole pair is arranged close to the top cover and is not in contact with the top cover and the inner measuring barrel, a concave rotating frame is arranged at the bottom of the liquid containing barrel and is positioned on the outer side of the inner measuring barrel, and a temperature sensor and a pressure sensor; the special-shaped NS pole pair is arranged close to the top cover, so that the external magnetic field intensity of the high-pressure closed container is large, and the measurement is more accurate.
The driving base is a cylindrical concave platform, is placed below the high-pressure closed container, is internally provided with a driving motor and a groove structure, is electrically connected with the groove structure, and is magnetically connected with the concave rotating frame.
Preferably, the magnetoresistive sensor is located directly above the pair of NS poles. The magnetic field generated right above the NS pole pair is high in distribution, high in magnetic density and low in magnetic loss, and the magnetic saturation requirement of the magnetoresistive sensor is easily met.
Preferably, the diameter of the inner measuring cylinder is smaller than that of the high-pressure closed container, and the centers of the inner measuring cylinder and the high-pressure closed container are located on the same vertical central line.
Preferably, the special-shaped NS pole pair is made of rare earth permanent magnet material samarium cobalt. Samarium cobalt material is resistant to high temperatures and can produce relatively strong magnetic field strengths over large distances to meet the magnetic saturation requirements of magnetoresistive sensors.
A measuring method of a device for measuring the viscosity of drilling fluid under high temperature and high pressure comprises the following two scenes:
scene one: temperature, pressure and rotating speed fixed value measurement comprises the following small steps:
s1: setting parameters: the measuring personnel sets the temperature, the pressure and the rotating speed through remote input or key input;
s2: and (3) measuring and calculating the viscosity value: the controller controls heating and pressurizing of the high-pressure closed container, after the temperature and pressure values reach set values, the base is driven to magnetically drive the concave rotating frame to run at a set rotating speed, the controller collects an instantaneous angle and a steady-state angle provided by the angle monitoring module, converts the angle into a viscosity value through an algorithm and displays the viscosity value on the display screen, and simultaneously displays the current temperature and pressure, different rotating speeds can be manually switched in the measuring process, and the maximum value of viscosity change is automatically collected during switching;
scene two: the measurement of temperature, pressure and rotation speed univariate values comprises the following three conditions:
the first condition is as follows: the method for measuring the change characteristics of the viscosity along with the temperature has the following steps:
s1: setting parameters: the measuring personnel sets a fixed rotating speed value, a fixed pressure value and a fixed temperature change range through remote input or key input;
s2: and (3) measuring and calculating the viscosity value: the controller controls the application of different temperatures to the high-pressure closed container, drives the base to magnetically drive the concave rotating frame to run at a set rotating speed, acquires an instantaneous angle and a steady-state angle provided by the angle monitoring module in the temperature change process, converts the angle into a viscosity value through an algorithm, displays the viscosity value on a display screen, simultaneously displays the current fixed rotating speed and the current fixed pressure value, and selects whether to store a curve or not after the temperature runs from an initial set value to a termination set value;
case two: the method for measuring the viscosity variation characteristic along with the pressure with fixed rotating speed and temperature comprises the following steps:
s1: setting parameters: the measuring personnel sets a fixed rotating speed value, a fixed temperature value and a fixed pressure change range through remote input or key input;
s2: and (3) measuring and calculating the viscosity value: the controller controls to apply different pressures to the high-pressure closed container, drives the base to magnetically drive the concave rotating frame to run at a set rotating speed, acquires an instantaneous angle and a steady-state angle provided by the angle monitoring module in the pressure change process, converts the angle into a viscosity value through an algorithm, displays the viscosity value on a display screen, simultaneously displays the current fixed rotating speed and the current fixed temperature value, and selects whether to store a curve or not after the pressure runs from an initial set value to a termination set value;
case three: the temperature and pressure are fixed, and the measurement of the viscosity variation characteristic along with the rotation speed comprises the following steps:
s1: setting parameters: a measurer sets a rotating speed initial value, a rotating speed final value, a downshift rotating speed value, the holding time of each rotating speed gear and the sampling time of the viscosity value in each rotating speed gear through remote input or key input;
s2: and (3) measuring and calculating the viscosity value: the controller controls to apply specific pressure and temperature to the high-pressure closed container, the base is driven to magnetically drive the concave rotating frame to rotate, the controller controls automatic downshift measurement, rotating speed conversion is completed in the downshift measurement process, the controller collects an instantaneous angle and a steady-state angle provided by the angle monitoring module in the rotating speed change process, the angle is converted into a viscosity value through an algorithm and displayed on a display screen, the current temperature, pressure and rotating speed are displayed simultaneously, and when the rotating speed runs from an initial set value to a termination set value, viscosity-rotating speed curve measurement is completed, and whether the curve is stored or not is selected.
Preferably, after the measurement process is finished, the system can automatically reduce the pressure and the temperature, the controller collects the values of the pressure and the temperature until the pressure and the temperature reach the normal pressure and the normal temperature, and finally the system stops working.
Preferably, the temperature and pressure anomaly detection algorithm in the first scene and the second scene detects the device, and the device gives an alarm when the anomaly occurs.
Preferably, the controller samples the instantaneous angle provided by the angle monitoring module at a time interval of 10 milliseconds.
The invention has the following beneficial effects:
(1) the non-contact measurement has no torque loss, and the detection of the viscosity value of the drilling fluid in a high-temperature and high-pressure state can be realized in a smaller space;
(2) the cost is low, the reliability and the repeatability are good, once the special-shaped NS pole pair is fixed, the magnetic field direction is also fixed, and the problem of repeated accumulated errors can not occur.
Drawings
FIG. 1 is a schematic cross-sectional view of a device for measuring the viscosity of a drilling fluid at high temperature and high pressure.
Fig. 2 is a schematic diagram of a structure of a special-shaped NS pole pair.
Fig. 3 is a diagram of the operation state of the drilling fluid viscosity measuring device.
Fig. 4 is a connection block diagram of the present invention.
In the figure: 1. a chassis; 11. a communication antenna; 12. a display screen; 13. pressing a key; 14. an alarm; 15. a magnetoresistive sensor; 2. fixing a support frame; 3. a high pressure closed vessel; 31. a top cover; 32. a liquid containing cylinder; 4. a drive base; 41. a drive motor; 42. a groove structure; 5. a special-shaped NS pole pair; 6. a torsion spring; 7. a connecting shaft; 8. an inner measuring cylinder; 9. a concave rotating frame.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
as shown in fig. 1 to 3, the device for measuring the viscosity of drilling fluid under high temperature and high pressure of the present invention comprises a case 1, a high pressure closed container 3 and a driving base 4, wherein the case 1 is fixedly mounted on a fixed support frame 2, the fixed support frame 2 comprises a base, a lifting rod vertically disposed, and a fixed rod horizontally disposed and connected with the lifting rod, and the case 1 is mounted on the fixed rod of the fixed support frame 2; a high-pressure closed container 3 is placed under the case 1, the high-pressure closed container 3 comprises a liquid containing barrel 32 and a top cover 31, the high-pressure closed container 3 is in a closed state when the top cover 31 is screwed on the liquid containing barrel 32, a torsion spring 6 is fixedly connected to the middle of the bottom surface of the top cover 31, a through hole is formed in the middle of the torsion spring 6 which is automatically designed and processed in a sleeved mode, the size is small, high temperature resistance is achieved, a special-shaped NS pole pair 5 formed by magnetizing of a strong magnetic material is formed in the outer portion of the torsion spring 6, the length of the torsion spring 6 is larger than that of the special-shaped NS pole pair 5, the special-shaped NS pole pair 5 is arranged close to the top cover 31 and is not in contact with the top cover 31, the magnetic field intensity generated by the special-shaped NS pole pair 5 is large and can penetrate through the liquid containing barrel 32, the lower end; concave type swivel mount 9 is installed through the fixed axle in flourishing liquid section of thick bamboo 32 bottom center, and interior measuring cylinder 8 is located concave type swivel mount 9 inside, and concave type swivel mount 9 bottom both sides are provided with N, S magnet respectively, still are equipped with pressure sensor and the temperature sensor of measuring high-pressure sealed container 3 internal pressure and temperature in the high-pressure sealed container 3, but the convenient adjustment machine case of liftable pole is 1 to the convenient magnetic field in the flourishing liquid section of thick bamboo 32 of measuring of suitable height.
Base top, drive base 4 has been placed to high-pressure sealed container 3 below, drive base 4 is cylindric concave station, device during operation high-pressure sealed container 3 is placed on cylindric concave station, inside driving motor 41 and the groove structure 42 of being equipped with of drive base 4, the both ends top of groove structure 42 is provided with N, S magnet respectively, groove structure 42 one end top N utmost point corresponds the S utmost point of concave type swivel mount 9 bottom one side, groove structure 42 other end top S utmost point corresponds the N utmost point of concave type swivel mount 9 bottom opposite side, driving motor 41 adopts the digital control step motor of high accuracy, produce different pulse through the PWM mode and control driving motor 41' S rotational speed.
The special-shaped NS pole pair 5 is made of high-temperature-resistant rare earth permanent magnet material samarium cobalt, can generate stronger magnetic field intensity at a longer distance, and the appearance of the special-shaped NS pole pair 5 is specially designed, so that the distribution of magnetic lines of force is higher, the magnetic density is high, the magnetic loss is less, and the actually measured magnetic field intensity at a position 25 mm away from the special-shaped NS pole pair 5 is more than 200 Gauss.
A communication antenna 11, a display screen 12, a key 13 and an alarm 14 which are positioned on one side of the display screen 12 are arranged above the case 1, the communication antenna 11 is used for carrying out information interaction with a remote control terminal, and an operator can measure the viscosity of the drilling fluid through the remote control terminal without on-site measurement; the rear of the case 1 is provided with a switch.
The diameter of the inner measuring cylinder 8 is smaller than that of the liquid containing cylinder 32, and the centers of the inner measuring cylinder 8 and the liquid containing cylinder 32 are located on the same vertical central line, so that the measured liquid is uniformly distributed in an annular space generated by the inner measuring cylinder 8 and the liquid containing cylinder 32, and the viscosity of each part is uniform.
As shown in fig. 4, the cabinet 1 includes the following operating modules:
a control module: the device comprises a controller and a memory, and is used for controlling and realizing the measurement of the viscosity of the drilling fluid under different pressures, different temperatures and different rotating speeds; the controller is an MCU controller, controls the whole device to normally operate, and has other intelligent full-automatic work flows and remote operation and monitoring functions.
The angle monitoring module: the device comprises an angle resolving processor, a magnetoresistive sensor 15 and a signal amplifier, and is used for detecting the rotation angle of a magnetic field generated by the special-shaped NS pole pair 5 in the high-pressure closed container 3 so as to measure the viscosity value of the drilling fluid to be measured in the high-pressure closed container 3; the magnetoresistive sensor 15 is located right above the special-shaped NS pole pair 5, so that the magnetic saturation requirement of the magnetoresistive sensor 15 is met more easily, and the magnetoresistive sensor 15 is ensured to enter a saturation state reliably. The rotation angle of the inner measuring cylinder 8 in the high-temperature and high-pressure environment in the high-pressure closed container 3 is in a proportional relation with the viscosity of the measured drilling fluid, the high-temperature-resistant rare earth permanent magnet special-shaped NS pole pair 5 in the high-pressure closed container 3 rotates synchronously with the inner measuring cylinder 8, and further the magnetic field generated by the special-shaped NS pole pair 5 (the magnetic field exists inside and outside the high-pressure closed container 3, the magnetic field in the container is strong, and the magnetic field outside the container is weak) also rotates synchronously with the inner measuring cylinder 8, so that the viscosity value of the measured drilling fluid in the high-pressure closed container 3 can be measured by detecting the rotation angle of the magnetic field outside the liquid containing cylinder 32, a corresponding magnetoresistive sensor 15 circuit is designed for the magnetoresistive sensor 15, the magnetic saturation intensity of the magnetoresistive sensor 15 is about 80 gauss, and the magnetoresistive sensor 15 can. Two magnetoresistive Wheatstone bridges forming 45 degrees with each other are arranged inside the designed magnetoresistive sensor 15, and when the magnetic field where the magnetoresistive sensor 15 is under the condition of magnetic saturation rotates, output voltage can be generated in the two Wheatstone bridges of the sensor: VA ═ Vs × S Sin (2 θ) and VB ═ Vs × S cos (2 θ), where Vs is the supply voltage to the bridge, S is a constant, and a typical value is 12 mV/V. The magnetoresistive sensor 15 can output an angular range of ± 90 degrees. Therefore, the rotation angle can be obtained by detecting the voltage, and the viscosity value of the drilling fluid can be obtained. Under the condition of 5V power supply voltage (Vs ═ 5V), the magnetoresistive sensor 15 will provide a swing of about 120mV (plus or minus 60mV, -60mV for-90 degrees, and +60mV for +90 degrees) at 2.5V bias voltage, and an amplifier circuit with 30 times of amplification factor is designed by using a signal amplifier, so that the swing of the output voltage reaches plus or minus 1.8V (-1.8V for-90 degrees, and +1.8V for +90 degrees), and the output voltage is collected by an a/D converter of the angle calculation processor and enters the inside of the angle calculation processor. If the A/D converter adopts a more common resolution of 12 bits, bipolar input is adopted, and the voltage reference adopts 2.5V, the accuracy after measurement is about 180 degrees/(4096 × 1.8/2.5) ═ 0.061 degrees, the measurement accuracy mainly depends on the resolution and the accuracy of the A/D converter, and if an A/D converter with higher resolution and accuracy is adopted, the measurement accuracy can be further improved. The angle resolving processor processes the acquired data to obtain the current instantaneous rotation angle, and the angle value is stored in an internal memory; the angle sampling rate is 1 millisecond, namely equivalent to collecting angle data for 1000 times per second, and the real-time performance is high; the angle calculation processor may be connected to the controller via a communication interface and transmit the current viscosity value. The communication rate is 115200bps, the communication content is 10 bytes, the communication content comprises a viscosity value and a check value, the communication protocol adopts a protocol with data check, the check mode adopts CRC check, data transmission errors in communication are prevented, and the viscosity value can be sent to the controller 1000 times in each second at the fastest speed.
The temperature and pressure monitoring module: the pressure sensor and the temperature sensor are connected to the controller through the transmission, the controller can set a pressure value and a temperature value required by measurement, the current real-time pressure value and the current real-time temperature value are read through the pressure sensor and the temperature sensor, an abnormity detection algorithm is provided, whether the temperature and pressure control system works normally or not and whether abnormity exists or not can be judged through analyzing the variation of the temperature and the pressure along with time, and therefore whether alarming or not, whether remote alarming or not, whether automatic pressure relief or not, temperature reduction and automatic shutdown are determined according to the judgment sentence. The discrimination algorithm, the pressure abnormality judgment method and the temperature abnormality judgment method in the abnormality detection algorithm are as follows:
and (3) a discrimination algorithm: the controller always collects and stores real-time temperature and pressure values in the processes of temperature rise, pressure rise or temperature drop and pressure drop, and high-speed sampling is needed because the time of fault reaction is short when the pressure is abnormal, so that the sampling time interval of the real-time pressure value is set to be 100 milliseconds; the fault reaction time is longer when the temperature is abnormal, so the real-time temperature value sampling time interval is set to be 10 seconds;
the pressure abnormity judgment method comprises the following steps: the method comprises the steps of carrying out digital differential operation on a pressure real-time sampling value according to a sampling time interval delta t, calculating the pressure value variation delta P of two adjacent sampling points in the processes of pressure value rising, pressure value falling and constant pressure maintaining, obtaining the change slope of the pressure values of two adjacent collection points by using delta P/delta t, and calculating and judging whether sudden changes exist in the processes of pressure value rising, pressure value falling and constant pressure maintaining or not by analyzing the change condition of the slope in the processes of pressure value rising, pressure value falling and constant pressure maintaining. Judging whether the pressure value mutation condition occurs or not according to the magnitude of the pressure value change slope in the pressure value rising, falling and constant pressure maintaining processes; according to the normal highest change rate of the pressure value during normal work, a judgment threshold value is set, the threshold value is generally more than 2 times of the maximum value of the pressure change during the sampling time interval under normal conditions, namely, during normal work, the pressure rises, falls and keeps constant pressure at the highest change speed, if the speed is more than 2 times, the abnormality is determined, and if the speed is more than the threshold value, the abnormality is determined to occur in the pressure system. Because the sampling time is relatively fast, the abnormal conditions of signal transmission or signal transmission may exist, the system performs filtering processing, the depolarization smooth filtering is adopted, 9 points are collected at each sampling time, 2 maximum sampling values and 2 minimum sampling values are removed, and the remaining 5 points are used as average budgets, so that the anti-interference capability of the sampling values is improved. According to the judging method, whether the pressure system has abnormal conditions or not can be judged, and common abnormal conditions can be generated, and the alarm of the screen 12, the sound alarm, the remote APP alarm, the short message alarm or the telephone alarm can be displayed to wait for the processing of an operator; if serious abnormal conditions occur, if the sudden change of the pressure value is large, the system can carry out protective pressure relief and stop working, and operators can detect and remove faults.
The temperature abnormity judging method comprises the following steps: the digital differential operation is carried out on the real-time temperature sampling value according to the sampling time interval delta T, the temperature value variation delta T of two adjacent sampling points in the temperature value rising, falling and constant temperature keeping processes is calculated, the slope of the temperature value variation of the two adjacent sampling points is obtained by using the delta T/delta T, and whether the temperature value has sudden change in the temperature value rising, falling and constant temperature keeping processes can be calculated and judged by analyzing the change condition of the slope in the temperature value rising, falling and constant temperature keeping processes. Whether a temperature value mutation condition occurs or not can be judged according to the temperature value rising, falling and the temperature value change slope in the constant temperature keeping process; according to the normal maximum change rate of the temperature value during normal operation, a judgment threshold value is set, the threshold value is generally more than 2 times of the maximum value of the temperature change in a normal sampling time interval, namely, during normal operation, the temperature value has the highest change speed during rising, falling and constant temperature maintaining, if the speed is more than 2 times, an abnormality is determined, and if the speed is more than the threshold value, the abnormality is determined to occur in the temperature system. Because signal transmission or signal transmission abnormal conditions may exist, the system performs filtering processing, adopts the pole-removing smooth filtering, collects 9 points in each sampling time, removes 2 maximum and minimum sampling values, and uses the remaining 5 points as average budget, thereby improving the anti-interference capability of the sampling values. According to the judging method, whether the temperature system has abnormal conditions or not can be judged, and because the temperature control system cannot rise and fall very quickly due to the characteristics, the faults of sudden and personal injury cannot occur, so that the temperature system is abnormal, generally, the display screen 12 gives an alarm and a sound alarm, and the remote APP alarm, the short message alarm or the telephone alarm can be carried out, and the operator is waited to process and remove the faults.
A remote control module: information interaction is carried out with a remote control terminal through a communication antenna 11; the controller can be connected to a server of the remote terminal through the communication antenna 11 and the wireless communication module, and data communication is completed through the server and an APP program running on the mobile phone. The APP software of the mobile phone can set the working mode of the control system, the APP software of the mobile phone can remotely and synchronously control the working mode of the system, the rotating speed is remotely controlled and switched, and the test result is checked on the mobile phone in real time. The specific operation is as follows: the mobile phone APP software can remotely and conveniently set parameters of a single parameter automatic test mode, an intelligent full-automatic working mode or parameters of a circulating intelligent full-automatic working mode through a friendly program interface, then the system can be remotely set to start working, the system can automatically run according to the set parameters, key measurement data contents are sent to the mobile phone APP end through a network and a server at key time nodes, and a user can monitor the whole test process and test results out of site. After the test is finished, the system can also send a command to the remote mobile phone APP to prompt the test to be finished, and the whole test result and the parameter curve are sent to the mobile phone terminal, so that the user can test the system again or close the system.
The mobile phone APP software can monitor the pressure and temperature values in the test process in real time; the system also can be when discovering temperature and pressure anomaly, timely, rapidly send the SMS for the cell-phone or through APP suggestion parameter anomaly, even directly call for the operator and pass through the pronunciation and report an emergency and ask for help or increased vigilance, and operating personnel can remote control pressure release, cooling after receiving to report an emergency and ask for help or increased vigilance the anomaly back, prevents the incident, because the person can not appear bodily injury at the scene.
Because this kind of remote operation and monitoring function, the user can be at on-the-spot manual setting parameter also can set up the parameter with cell-phone APP, later just can leave the instrument and go to accomplish other work, through remote control and detection measurement condition and parameter, avoid survey crew to have the time-wasting waiting of keeping on beside the instrument to measure and finish, can avoid the bodily injury that the incident caused simultaneously, have fine security, convenience and practicality.
A motor driving module: the pulse with different flat rates is generated through a PWM mode to control the rotating speed of the driving motor 41, and the required rotating speed is provided for the system;
a power supply module: the electric energy required by normal work is provided for the control module, the angle detection module, the temperature and pressure monitoring module, the remote control module and the motor driving module.
Example 2:
a measuring method of a device for measuring the viscosity of drilling fluid under high temperature and high pressure comprises the following two scenes:
scene one: temperature, pressure and rotating speed fixed value measurement comprises the following small steps:
s1: setting parameters: the measuring personnel inputs the set temperature, pressure and rotating speed through remote input or a key 13;
s2: and (3) measuring and calculating the viscosity value: the controller controls the heating and pressurizing of the high-pressure closed container 3, after the temperature and pressure values reach set values, the groove structures 42 in the driving base 4 magnetically drive the concave rotating frame 9 to run at set rotating speeds, the controller collects the instantaneous angles provided by the angle monitoring module, converts the angles into viscosity values through an algorithm and displays the viscosity values on the display screen 12, and simultaneously displays the current temperature and pressure, different rotating speeds can be manually switched in the measuring process, and the maximum value of viscosity change is automatically collected during switching.
Scene two: the measurement of temperature, pressure and rotation speed univariate values comprises the following three conditions:
the first condition is as follows: the method for measuring the change characteristics of the viscosity along with the temperature has the following steps:
s1: setting parameters: the measurer sets a fixed rotating speed value, a fixed pressure value and a fixed temperature change range through remote input or key 13 input;
s2: and (3) measuring and calculating the viscosity value: the controller controls the application of different temperatures to the high-pressure closed container 3, the groove structure 42 in the driving base 4 drives the concave rotating frame 9 to rotate magnetically, the controller collects an instantaneous angle provided by the angle monitoring module in the temperature change process, the angle is converted into a viscosity value through an algorithm and displayed on the display screen 12, the current fixed rotating speed and the current fixed pressure value are displayed, and when the temperature is changed from an initial set value to a termination set value, the viscosity-temperature curve measurement is finished, whether the curve is stored or not can be selected or the measurement is finished can be selected;
case two: the method for measuring the viscosity variation characteristic along with the pressure with fixed rotating speed and temperature comprises the following steps:
s1: setting parameters: the measurer sets a fixed rotating speed value, a fixed temperature value and a fixed pressure change range through remote input or key 13 input;
s2: and (3) measuring and calculating the viscosity value: the controller controls to apply different pressures to the high-pressure closed container 3, the groove structure 42 in the driving base 4 drives the concave rotating frame 9 to rotate magnetically, the controller collects an instantaneous angle provided by the angle monitoring module in the pressure change process, the angle is converted into a viscosity value through an algorithm and displayed on the display screen 12, the current fixed rotating speed and the current fixed temperature value are displayed, and when the pressure runs from an initial set value to a termination set value, the viscosity-pressure curve measurement is finished, whether the curve is stored or not can be selected or the measurement is finished can be selected;
case three: the temperature and pressure are fixed, and the measurement of the viscosity variation characteristic along with the rotation speed comprises the following steps:
s1: setting parameters: a measurer inputs and sets a rotating speed initial value, a rotating speed final value, a downshift rotating speed value, the holding time of each rotating speed gear and the sampling time of the viscosity value in each rotating speed gear through remote input or a key 13;
s2: and (3) measuring and calculating the viscosity value: the groove structure 42 in the driving base 4 magnetically drives the concave rotating frame 9 to rotate, the controller controls automatic downshift measurement, the rotating speed conversion is completed in the downshift measurement process, the controller collects the instantaneous angle provided by the angle monitoring module in the rotating speed change process, the angle is converted into a viscosity value through an algorithm and displayed on the display screen 12, the current temperature, the current pressure and the current rotating speed are displayed, and when the rotating speed runs from an initial set value to a termination set value, the viscosity-rotating speed curve measurement is completed, whether the curve is stored or the measurement is selected to be finished can be selected.
After the test process is finished, the system can automatically reduce the pressure and the temperature, the controller can collect the numerical values of the pressure and the temperature until the pressure and the temperature reach the normal pressure and the normal temperature state, and finally the work is stopped.
The setting range of the rotating speed V is 1-600 rpm, the setting range of the downshifting rotating speed value delta V is 1-100 rpm, the setting range of the retention time t of each rotating speed gear is 1-3600 seconds, the setting range of the viscosity value sampling time ts in each rotating speed gear is 100-60 seconds, the setting range of the shear force value high-speed sampling time ths of each rotating speed switching point is 1-500 milliseconds,
for example: setting a starting rotating speed of 600 rpm, a finishing rotating speed of 100 rpm, a downshift rotating speed value delta v of 10 rpm, a holding time t of each rotating speed gear of 60 seconds, a viscosity value sampling time ts of each rotating speed gear of 1 second, and a high-speed sampling time ths of a rotating speed switching point of 10 milliseconds.
The system automatically starts to operate from 600 revolutions per minute, the viscosity value is collected once every 1 second and stored in a memory, after 60 seconds of collection, the revolution speed needs to be switched to 590 revolutions per minute, the viscosity value is collected and stored according to a sampling period of 10 milliseconds within 500 milliseconds before and after the revolution speed is switched, after 500 milliseconds of 590 revolutions per minute is switched, high-speed sampling is finished, the maximum value of the viscosity value in the revolution speed switching process is recorded and displayed, then the viscosity value is collected according to a sampling period of 1 second, and the revolution speed is switched to 580 revolutions per minute until 60 seconds later, so that the cycle is repeated until the revolution speed is reduced to 100 revolutions per minute, and the measurement is finished.
Example 3:
on the basis of the embodiment 2, the invention can also have a prefabricated temperature and pressure cycle intelligent full-automatic measuring method:
any of several sets (e.g., 10 sets) of temperature and pressure combination conditions are input either manually or by remote APP operation. And simultaneously setting parameters such as a rotating speed initial value, a rotating speed end value, a downshift rotating speed value, the holding time of each rotating speed gear, the viscosity value sampling time in each rotating speed gear, the shear force value high-speed sampling time of each rotating speed switching point and the like, and automatically and circularly executing a measuring method for automatically and fixedly measuring the viscosity along with the change of the rotating speed by temperature and pressure according to 10 sets of set temperature and pressure values by the system until the measurement is finished. The alarm prompts that the test is finished, 10 viscosity change curves can be displayed according to temperature, pressure, time and rotating speed gears, the maximum viscosity value is indicated and switched at the rotating speed switching point of the 10 curves, 10 groups of measurement results can be stored in a graph curve mode according to the measured temperature, pressure and time, and historical measurement results can also be called. After the test process is finished, the device can automatically reduce the pressure and the temperature to the normal pressure and normal temperature state. The realization of automatic pressure reduction and temperature reduction is completed by sending commands to the pressure controller and the temperature controller by the controller, and meanwhile, the controller can collect the numerical values of pressure and temperature until the pressure and the temperature reach the normal pressure and normal temperature state, and finally, the work is stopped.
The use process of the invention is as follows: the invention relates to a device and a method for measuring the viscosity of drilling fluid under high temperature and high pressure, wherein the device is characterized in that the measured fluid is poured into a high-pressure closed container 3, a top cover 31 and a fluid containing barrel 32 are screwed down to enable the high-pressure closed container 3 to reach a closed state, the high-pressure closed container 3 is placed below a machine case 1, the height of a lifting rod is adjusted, a controller can collect numerical values input remotely or input by a key 13 and set parameters such as temperature, pressure, rotating speed and the like, then the system starts to heat and pressurize, a temperature sensor and a pressure sensor collect real-time temperature and pressure, after the temperature and pressure values reach set values, a driving motor 41 runs at set rotating speed to enable a groove structure 42 to rotate, the groove structure 42 magnetically drives a concave rotating frame 9 to rotate, the measured fluid drives an inner measuring barrel 8 to rotate due to viscous force, the inner measuring barrel 8 drives a torsion spring and a special-shaped NS pole pair 5 to rotate, and the controller collects the instantaneous angle and stable The state angle is calculated and converted into a viscosity value which is displayed on the display screen 12, and the current temperature and pressure are displayed simultaneously, and the acquisition time can be set, and is generally 500 milliseconds. The different rotation speeds can also be set and switched manually through the rotation speed key 13. The controller can automatically acquire the maximum value of the viscosity change during switching and simultaneously display the maximum value on the display screen 12, and the process automatically increases the sampling time interval to 10 milliseconds so as to ensure the quick tracking of the viscosity value which changes quickly during the switching of the rotating speed.
The invention has the following beneficial effects:
(1) the viscosity value of the drilling fluid can be measured in a small space under a high-temperature and high-pressure state through a high-pressure closed container which is small in size and can be closed;
(2) the specially-shaped NS pole pair is custom-designed and manufactured, the cost is low, the reliability and the repeatability are good, once the specially-shaped NS pole pair is fixed, the magnetic field direction is also fixed, and the problem of repeated accumulated errors can not occur;
(3) the system can be remotely operated, controlled, set parameters, remotely monitor the test process and obtain the measurement result, is unattended, and can timely find abnormality to avoid safety accidents and personal injury through the abnormality of alarm parameters such as APP, short message or voice alarm;
(4) the measurement precision is high.
The invention can be widely applied to the occasion of viscosity measurement.
It is well within the skill of those in the art to implement and protect the present invention without undue experimentation and without undue experimentation that the present invention is directed to software and process improvements.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A device for measuring the viscosity of a drilling fluid at high temperature and high pressure, comprising: quick-witted case (1), high pressure closed container (3) and drive base (4), wherein:
case (1) installs on fixed stay frame (2), and case (1) top is provided with communication antenna (11), display and is located button (13) and alarm (14) of display one side, and case (1) is inside to include following work module:
a control module: the device comprises a controller and a memory, and is used for controlling and realizing the measurement of the viscosity of the drilling fluid under different pressures, different temperatures and different rotating speeds;
the angle monitoring module: the device comprises an angle calculating processor, a magnetic resistance sensor (15) and a signal amplifier, wherein the angle calculating processor is used for monitoring the rotating angle of a magnetic field so as to calculate the measured value of the viscosity liquid, two magnetic resistance Wheatstone bridges forming an included angle of 45 degrees with each other are arranged in the magnetic resistance sensor (15), and the angle range output by the magnetic resistance sensor (15) is +/-90 degrees;
the temperature and pressure monitoring module: monitoring the temperature and the pressure inside the high-pressure closed container (3) in real time through data transmitted by the temperature sensor and the pressure sensor and an anomaly detection algorithm;
a remote control module: the controller is used for carrying out information interaction with the remote control terminal through the antenna, receiving an instruction of the remote control terminal and transmitting the measurement data to the remote control terminal;
a motor driving module: enabling a driving motor (41) to work to provide the required rotating speed for the device;
a power supply module: the device comprises a power supply, a power supply and a control circuit, wherein the power supply is used for supplying electric energy required by normal operation to the device;
the high-pressure closed container (3) is placed under the case (1), the high-pressure closed container (3) comprises a liquid containing barrel (32) and a top cover (31), the middle of the bottom surface of the top cover (31) is connected with a torsion spring (5), a special-shaped NS pole pair (6) is fixedly sleeved outside the torsion spring (5), the lower end of the torsion spring (5) is fixedly connected with a connecting shaft (7), the lower end of the connecting shaft (7) is connected with an inner measuring barrel (8), the special-shaped NS pole pair (6) is arranged close to the top cover (31) and is not in contact with the top cover (31) and the inner measuring barrel, a concave rotating frame (9) is installed at the bottom of the liquid containing barrel (32), the concave rotating frame (9) is positioned on the outer side of the inner measuring barrel, and;
the driving base (4) is a cylindrical concave table and is placed below the high-pressure closed container (3), a driving motor (41) and a groove structure (42) are arranged inside the driving base (4), the driving motor (41) is electrically connected with the groove structure (42), and the groove structure (42) is magnetically connected with the concave rotating frame (9).
2. A high temperature and high pressure drilling fluid viscosity measuring apparatus as claimed in claim 1, wherein the magneto resistive sensor (15) is located directly above the NS pole pair.
3. The device for measuring the viscosity of the drilling fluid under high temperature and high pressure according to claim 1, wherein the diameter of the inner measuring cylinder (8) is smaller than that of the liquid containing cylinder (32) and the centers of the inner measuring cylinder (8) and the high pressure closed container (3) are positioned on the same vertical center line.
4. The device for measuring the viscosity of the drilling fluid at high temperature and high pressure according to claim 1, wherein the special-shaped NS pole pair (6) is made of rare earth permanent magnet samarium cobalt.
5. The measurement method of the device for measuring the viscosity of the drilling fluid at high temperature and high pressure according to claims 1 to 4 is characterized by comprising the following two scenes:
scene one: temperature, pressure and rotating speed fixed value measurement comprises the following small steps:
s1: setting parameters: the measuring personnel inputs the set temperature, pressure and rotating speed through remote input or a key (13);
s2: and (3) measuring and calculating the viscosity value: the controller controls the heating and pressurizing of the high-pressure closed container (3), after the temperature and pressure values reach set values, the base (4) is driven to magnetically drive the concave rotating frame (9) to run at a set rotating speed, the controller collects the instantaneous angle and the steady-state angle provided by the angle monitoring module, the angle is converted into a viscosity value through an algorithm and displayed on the display screen (12), the current temperature and the current pressure are displayed at the same time, different rotating speeds can be manually switched in the measuring process, and the maximum value of viscosity change is automatically collected during switching;
scene two: the measurement of temperature, pressure and rotation speed univariate values comprises the following three conditions:
the first condition is as follows: the method for measuring the change characteristics of the viscosity along with the temperature has the following steps:
s1: setting parameters: the measurer sets a fixed rotating speed value, a fixed pressure value and a fixed temperature change range through remote input or key (13) input;
s2: and (3) measuring and calculating the viscosity value: the controller controls different temperatures applied to the high-pressure closed container (3), the driving base (4) drives the concave rotating frame (9) to run at a set rotating speed, the controller collects an instantaneous angle and a steady-state angle provided by the angle monitoring module in the temperature change process, the angle is converted into a viscosity value through an algorithm and displayed on the display screen (12), the current fixed rotating speed and the current fixed pressure value are displayed, and when the temperature runs from an initial set value to a termination set value, the viscosity-temperature curve measurement is finished, and whether the curve is stored or not is selected;
case two: the method for measuring the viscosity variation characteristic along with the pressure with fixed rotating speed and temperature comprises the following steps:
s1: setting parameters: the measurer sets a fixed rotating speed value, a fixed temperature value and a fixed pressure change range through remote input or key (13) input;
s2: and (3) measuring and calculating the viscosity value: the controller controls to apply different pressures to the high-pressure closed container (3), the driving base (4) drives the concave rotating frame (9) to run at a set rotating speed, the controller collects an instantaneous angle and a steady-state angle provided by the angle monitoring module in the pressure change process, the angle is converted into a viscosity value through an algorithm and displayed on the display screen (12), the current fixed rotating speed and temperature value are displayed at the same time, and when the pressure runs from an initial set value to a termination set value, the viscosity-pressure curve is measured completely, and whether the curve is stored or not is selected;
case three: the temperature and pressure are fixed, and the measurement of the viscosity variation characteristic along with the rotation speed comprises the following steps:
s1: setting parameters: a measurer inputs and sets a rotating speed initial value, a rotating speed final value, a downshift rotating speed value, the holding time of each rotating speed gear and the sampling time of the viscosity value in each rotating speed gear through remote input or a key (13);
s2: and (3) measuring and calculating the viscosity value: the controller controls to apply specific pressure and temperature to the high-pressure closed container (3), the driving base (4) magnetically drives the concave rotating frame (9) to rotate, the controller controls automatic downshift measurement, rotating speed conversion is completed in the downshift measurement process, the controller collects an instantaneous angle and a steady-state angle provided by the angle monitoring module in the rotating speed change process, the angle is converted into a viscosity value through an algorithm and displayed on the display screen (12), the current temperature, pressure and rotating speed are displayed simultaneously, and when the rotating speed runs from an initial set value to a termination set value, the viscosity-rotating speed curve measurement is completed, and whether the curve is stored or not is selected.
6. The method as claimed in claim 5, wherein the temperature and pressure anomaly detection algorithm in the first and second scenes detects the device, and the device gives an alarm when an anomaly occurs.
7. The method of claim 5, wherein the controller samples the instantaneous angle with a sampling interval of 10 ms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011526546.2A CN112748047B (en) | 2020-12-22 | 2020-12-22 | High-temperature high-pressure drilling fluid viscosity measuring device and measuring method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011526546.2A CN112748047B (en) | 2020-12-22 | 2020-12-22 | High-temperature high-pressure drilling fluid viscosity measuring device and measuring method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112748047A true CN112748047A (en) | 2021-05-04 |
| CN112748047B CN112748047B (en) | 2023-09-12 |
Family
ID=75649349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011526546.2A Active CN112748047B (en) | 2020-12-22 | 2020-12-22 | High-temperature high-pressure drilling fluid viscosity measuring device and measuring method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112748047B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113959910A (en) * | 2021-10-26 | 2022-01-21 | 中海油田服务股份有限公司 | Experimental device for continuous measurement drilling fluid shear stress |
| CN116297013A (en) * | 2023-05-19 | 2023-06-23 | 卡松科技股份有限公司 | Monitoring method and system for viscosity fluctuation of hydraulic oil |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914489A (en) * | 2012-11-08 | 2013-02-06 | 河北联合大学 | Device and method for measuring viscosity electromagnetic property of covering slag under high-temperature state |
| CN103208000B (en) * | 2012-12-28 | 2015-10-21 | 青岛科技大学 | Based on the Feature Points Extraction of local extremum fast search |
| AT515219B1 (en) * | 2014-02-20 | 2015-07-15 | Anton Paar Gmbh | Method for determination of measured data of samples and rheometers |
| CN104122172B (en) * | 2014-07-28 | 2017-10-31 | 东北石油大学 | A kind of pair of cylinder rotary viscosimeter and its application method |
| CN106338454B (en) * | 2016-10-27 | 2023-10-20 | 上海大学 | Magnetic suspension rotary drum fluid damping measuring instrument |
| CN107860687B (en) * | 2017-12-18 | 2024-02-27 | 北京探矿工程研究所 | High-temperature high-pressure and low-temperature high-pressure rheometer |
| CN108613899B (en) * | 2018-06-15 | 2023-12-22 | 昆明理工大学 | Strain type self-adaptive oil viscosity measurement device and method |
| CN109916775A (en) * | 2018-12-29 | 2019-06-21 | 中国人民解放军空军勤务学院 | The online real time high temperature viscosity test system of aviation engine lubricating oil |
-
2020
- 2020-12-22 CN CN202011526546.2A patent/CN112748047B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113959910A (en) * | 2021-10-26 | 2022-01-21 | 中海油田服务股份有限公司 | Experimental device for continuous measurement drilling fluid shear stress |
| CN116297013A (en) * | 2023-05-19 | 2023-06-23 | 卡松科技股份有限公司 | Monitoring method and system for viscosity fluctuation of hydraulic oil |
| CN116297013B (en) * | 2023-05-19 | 2023-09-26 | 卡松科技股份有限公司 | Monitoring method and system for viscosity fluctuation of hydraulic oil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112748047B (en) | 2023-09-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112748047A (en) | Device and method for measuring viscosity of drilling fluid under high temperature and high pressure | |
| CN100545620C (en) | The method of testing that is used for portable elevator speed limiter testing device | |
| CN107101615A (en) | Incline monitoring system for electric transmission line pole and its application process based on Bluetooth communication | |
| CN112946471A (en) | Variable frequency motor fault monitoring system | |
| CN111186771A (en) | Remote tower crane intelligent control system | |
| CN112180862A (en) | Equipment state acquisition, monitoring and short message alarm control system | |
| CN107063347A (en) | A kind of gas sensor, monitoring system and monitoring method | |
| CN112748048B (en) | Intelligent digital display viscosity measuring device and measuring method thereof | |
| CN211573846U (en) | Axial flow fan fault diagnosis system based on current signal and information fusion | |
| CN111089634A (en) | Water level monitoring device and method | |
| CN106597281A (en) | No-load parameter detecting device for DC motor | |
| CN109283907B (en) | Automatic detection system and method for drainage of video integrated power production | |
| CN115267407B (en) | Equipment state early warning device based on artificial intelligence and early warning method thereof | |
| CN208238923U (en) | Intelligent vibration 4-20ma signal transmitting device | |
| CN208238821U (en) | encoder tester | |
| CN216206508U (en) | Communication information safety data acquisition device | |
| CN213689329U (en) | Self-powered environmental corrosion monitoring system for wind power equipment | |
| CN214502527U (en) | Fill electric pile's on-line monitoring device | |
| CN211234884U (en) | Bridge static deflection acquisition system based on microwave interferometry | |
| CN211121906U (en) | Circuit breaker mechanical characteristic on-line monitoring device based on multisensor | |
| CN113188822A (en) | Automatic detection device for excavator | |
| KR100356342B1 (en) | Apparatus for giving water-contamination warning | |
| CN216351172U (en) | Electromagnetic monitoring device for power equipment state | |
| CN213337933U (en) | Multi-working-condition motor performance test system | |
| CN216867066U (en) | All-round vibration intellectual detection system device of power plant's fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |