WO2016090566A1

WO2016090566A1 - Real-time monitoring control system for oil-well drilling

Info

Publication number: WO2016090566A1
Application number: PCT/CN2014/093436
Authority: WO
Inventors: 韩文峰; 韩晓玲; 杨超
Original assignee: 韩文峰
Priority date: 2014-12-10
Filing date: 2014-12-10
Publication date: 2016-06-16

Abstract

Disclosed is a real-time monitoring control system for oil-well drilling. The system comprises: a real-time monitoring unit, comprising a drilling fluid performance monitoring instrument, a geological well log monitoring instrument and a well-drilling engineering parameter monitoring instrument; the real-time monitoring unit being provided with several sensors, and a signal monitored by the sensor being transmitted by a wireless sensor network system; a real-time display and control unit being used as a control center of the system, and comprising a computer processing device, a plurality of display terminals and a central console, the computer processing device receiving and processing the signal monitored by the sensor and transmitted by the wireless sensor network system, and displaying monitor data via the display terminal; according to the monitor data displayed by the display terminal, an operator adjusts and controls a turntable motor, a drilling motor, a mud pump motor, a centrifuge motor, a vibrating screen motor, a grit separator and a desilter.

Description

Oil drilling real-time monitoring and control system

Technical field

The present application relates to a real-time monitoring and control system, and in particular to a real-time monitoring and control system in an oil drilling process.

Background technique

Drilling real-time monitoring and control technology is a comprehensive technology integrating drilling fluid, drilling engineering and geological logging. In drilling construction, it is very important to integrate drilling fluid, drilling engineering and geological logging into a platform for real-time drilling monitoring and control system. of.

In drilling, it is necessary to collect a large number of parameters such as drilling time, drilling pressure, suspension weight, riser pressure, turntable torque, rotation speed, drilling fluid performance, alkane content, oil saturation, etc., and calculate formation pressure coefficient and mud water. Mechanical parameters, etc. The computer system is used for real-time screen display and data recording. According to the construction design of the operation company, the well team is guided and supervised according to the design and construction. If abnormal changes such as blowouts and lost circulation are found, it is judged in time, the cause is analyzed, and the project accident forecast is provided, so that the construction unit can take corresponding measures in advance to reduce the occurrence of underground accidents, achieve the purpose of saving cost and improving drilling efficiency.

The preferred parameters are a very important technology to improve drilling speed and protect oil and gas layers. To achieve scientific drilling, in addition to the correct deployment of exploration, how to choose reasonable drilling parameters, drilling fluid performance and hydraulic parameters to improve Drilling machinery drilling speed. The three elements of drilling refer to the drilling pressure, rotation speed and displacement, which are the key factors to improve the drilling rate. The choice of parameters was manually selected according to experience. Nowadays, the computer software matched with real-time monitoring technology can design the drilling parameters in real time according to the use of the drill bit and the lithology characteristics of the formation, select reasonable drilling parameters and guide the construction operation. It can effectively improve the drilling speed, shorten the drilling cycle, save drilling costs, achieve the purpose of scientific drilling, and speed up the exploration process.

The safety of drilling construction and the protection of oil and gas layers are all related to formation pressure. To achieve safe drilling and reservoir protection, the key is reasonable drilling fluid performance parameters, the most important of which is drilling fluid density.

The use of drilling fluid density during drilling is determined by the formation lithology and formation pressure In order to achieve safe drilling and oil layers that are not contaminated and crushed, it is necessary to achieve a dynamic balance between the drilling fluid column pressure and the formation pore pressure during the drilling process. To achieve this goal, the key is to carry out real-time formation pressure monitoring during the construction process, and adjust the drilling fluid performance according to the changes of formation pressure. This is another important role of online real-time monitoring in exploration. Moreover, in the drilling process, it is necessary to use a geological logging instrument such as on-line spectroscopy and quantitative fluorescence technology to find oil and gas layers and thin oil layers in time.

Drilling fluid is called blood for drilling engineering. However, indicators such as viscosity, shear force, water loss, density, and lubricity that affect the performance of drilling fluid cannot be monitored online in real time. At the drilling site, the viscosity, shear force, water loss, density, lubricity and other indicators of the drilling fluid require the mud worker to sample the mud into the laboratory for testing. Not only the temperature change causes performance changes, but more importantly, it cannot be monitored in time. The delay caused by real-time control poses a threat to drilling safety and the oil and gas layer cannot be discovered in time.

The comprehensive logging instrument currently used can only monitor the parameters of geological logging and drilling engineering due to the limitation of instrument performance, and can not monitor and control the relevant parameters of drilling fluid performance in real time. It is impossible to calculate the formation pressure coefficient and the drilling fluid hydraulic parameters in real time.

Therefore, there is a need for a device that can monitor and control drilling in real time to solve the above problems to achieve scientific drilling.

Summary of the invention

One of the objectives of the present application is to provide a real-time monitoring and control system for oil drilling, real-time on-site monitoring and drilling process control of drilling fluid performance data, geological logging data, and drilling engineering parameters during drilling, and integrating monitoring and control into one platform. , to ensure fast and safe drilling, and timely and accurate discovery of oil and gas layers.

To achieve the above objective, the present application provides an oil drilling real-time monitoring and control system, comprising: a real-time monitoring unit, the real-time monitoring unit includes a drilling fluid performance monitoring instrument, a geological logging monitoring instrument, and a drilling engineering parameter monitoring instrument; The unit is configured with a plurality of sensors, the signals monitored by the sensors are transmitted by the wireless sensor network system; the real-time display and control unit is the control center of the system, and the real-time display and control unit includes a computer processing device and a plurality of display terminals and a console, the computer processing device receives and processes the signal monitored by the sensor transmitted by the wireless sensor network system, and displays the monitoring data through the display terminal, and the operator displays according to the display terminal Monitoring data adjustment control turntable motor, drill motor, mud pump motor, centrifuge motor, vibrating screen motor, desander and desilter.

Preferably, the drilling fluid performance monitoring instrument comprises a real-time monitoring viscometer on the drilling site, a real-time monitoring water loss meter on site, a real-time monitoring sand content and a solid phase content measuring instrument, a real-time monitoring lubrication coefficient measuring instrument, a density measuring instrument, Temperature measuring instrument, conductivity meter, H ₂ S detector and drilling fluid inlet and outlet flow meter.

Preferably, the geological logging monitoring instrument comprises a spectrometer, a gas chromatograph, an all-hydrocarbon content analyzer, an automatic sand and fluorescence analyzer, a hydrogen flame chromatograph, a thermal conductivity chromatograph, a carbonate analyzer, and a mudstone density. Analyzer, hot vacuum distillation full degassing device, binocular microscope, oven and PK analyzer.

Preferably, the automatic sanding and fluorescence content measuring instrument comprises a drilling fluid infusion tube, the drilling fluid infusion tube is provided with a metering pump, and one or two vibrating screens or cylindrical screens are arranged below the outlet of the drilling fluid infusion tube, and the irrigation tube is The outlet is located above the screen surface of the two vibrating screens, and the washed debris flows from the second vibrating screen into the spectrometer for spectrometry, and the spectral signal is transmitted to the computer. According to the weight of the sand and the drilling time collected by the drilling real-time monitoring system, The combination of well depth and mud return velocity data is processed by computer software to obtain the oil saturation data of a certain depth of the oil and gas layer; the measured debris is transferred into the sand container through the conveyor belt, and the weight of the sand is determined by the weight sensor for the specified time. Calculate the oil saturation and the sand content of the drilling fluid; according to the data such as drilling time, well depth and mud return speed, the computer will command the sand container to unload the sand once every one meter or the specified footage. The cuttings enter the automatic bagging machine package. The coder is dated and the depth of the reservoir.

Preferably, the drilling engineering parameter monitoring instrument comprises a plurality of sensors and wireless data transmission devices, and the sensor comprises a hanging weight sensor, a vertical pressure sensor, a sleeve pressure sensor, a torque sensor, a rotational speed sensor, a pumping sensor, a winch sensor, and a generator voltage. Sensor and current sensor.

Preferably, the drilling control system includes a rotary motor control, a drill motor control, a mud pump motor control, a centrifuge motor control, a shaker control, a desander control, and a desilter control.

Preferably, a remote transmission unit is further included, the remote transmission unit configured to transmit and share real-time data monitored by the real-time monitoring unit.

Preferably, the drilling site real-time monitoring viscometer comprises a drilling fluid tank, at least two rotational vibrometers of different rotational speeds are installed in the drilling fluid tank, and the rotational viscometer is suspended in the drilling fluid tank by a bracket, One end of the drilling fluid tank is provided with a drilling fluid inlet port, and the other end is provided with a drilling fluid outlet port. The rotary viscometer is provided with a plurality of outer cylinders, each of which is provided with an inner cylinder, an upper end of each of the inner cylinders is provided with an angle sensor, and an outer wall of each of the outer cylinders is provided with a power transmission a component, the power transmission component being coupled to the motor via a drive shaft.

Preferably, the on-site real-time monitoring water loss meter comprises a base, the base supports an outer tube through a support, the outer tube supports a filter tube through a shaft seal at both ends, and the outer tube is connected with one end of the drilling fluid infusion tube. The other end of the drilling fluid infusion tube is connected to the mud pump, and the one-way valve is installed on the drilling fluid infusion tube, and one end of the sealed portion of the filter tube is mounted with a transmission member, and the transmission member is connected to the reducer through a transmission belt, the filter tube a filtrate container is installed under the other end, the filtrate container is connected to a flow meter, the flow meter is connected to a port or a wireless transmitter, and the shaft seal is installed at both ends of the outer tube; the drilling fluid infusion tube A pressure sensor for adjusting the filtration pressure and a return valve are mounted thereon.

Preferably, the on-site real-time monitoring sand content and solid phase content measuring instrument comprises a drilling fluid infusion pipe, and a first vibrating screen or a cylindrical sieve is arranged below the outlet of the drilling fluid infusion pipe, and the first vibrating screen is arranged below a second vibrating screen or a cylindrical screen, the first vibrating screen is located above the second vibrating screen, a first container is disposed below the second vibrating screen, the first container is connected to a weight sensor, and the weight sensor Connected to the wireless signal transmitter or port, the outlet of the flushing tube is located above the screen surface of the second vibrating screen, and a filtrate tank is arranged below the first vibrating screen, and the filtrate tank is connected to the centrifuge through a connecting pipe. a second container is installed at the outlet of the centrifuge filter residue, the second container is connected to the second weight sensor, and the second weight sensor is connected to the wireless signal transmitter or port, and the signals monitored by the two instruments are all connected by the wireless transmitter or The data line is transmitted.

Preferably, the determination of the outlet flow rate in the drilling fluid inlet and outlet flow meter is performed by a pressureless variable flow meter including a buffer tank, a liquid level gauge, a computer, a programmable controller, a speed regulating motor And volumetric pump. The determination of the inlet flow rate is based on the stroke of the mud pump.

Preferably, the density measuring instrument is a liquid densitometer for online real-time monitoring, which comprises: a container for a liquid inlet and outlet with an overflow pipe, a load cell, a programmable controller, a flushing device, a temperature sensor, a display or a computer. The programmable controller is connected to the display or computer through a cable or wireless data transmission module.

In addition, preferably, the on-site real-time monitoring lubrication coefficient measuring instrument is an extreme pressure lubricating instrument for online real-time monitoring of drilling, which comprises: a computer, a wireless data transmission module or port, a programmable controller, a current transmitter, Variable frequency motor, hydraulic cylinder, torsion bracket, slip ring and slider; The slide instrument was modified, and the manual pressure torque wrench was changed to the automatic pressure controlled by the computer, so that the force acting on the slip ring was 444.8N, and the friction coefficient of the distilled water was 0.34; the collected motor current The data signal is processed by the current transmitter and the programmable controller, and is connected to the drilling real-time monitoring and control system acquisition module through the data line or the wireless data transmission module, and becomes a part of the drilling real-time monitoring and control system; the working time and work of the extreme pressure lubrication instrument The program is controlled by the computer through a programmable controller.

It can be seen from the above description and practice that the oil drilling real-time monitoring and control system provided by the present application can solve the problem that only the part of the geological logging and drilling engineering parameters existing in the comprehensive logging instrument can be monitored, the drilling fluid performance parameters and the drilling engineering parameters. Comprehensive on-line real-time monitoring and control of geological logging parameters. According to changes in formation pressure, timely adjust drilling fluid performance, optimize parameter drilling, increase drilling speed, shorten drilling cycle, save drilling costs, and achieve scientific drilling. Integrating drilling fluid, drilling engineering and geological logging into one, and through computer processing, it becomes a comprehensive monitoring and control system integrating multiple data acquisition, display, processing and control of the well site to ensure fast and safe drilling; To meet the needs of safety optimization and drilling, comprehensive judgment of oil and gas water layers, comprehensively master drilling engineering data through online real-time monitoring and control system, so that on-site construction personnel can adjust drilling time, drilling pressure, suspension weight, riser pressure, turntable torque and speed in real time. Etc., to achieve safe optimization of drilling and timely discovery of oil and gas layers Purpose.

DRAWINGS

The above features and technical advantages of the present application will become more apparent and understood from the description of the embodiments. In the drawing,

1 is a schematic diagram of a real-time monitoring viscometer of a drilling site for a real-time oil and gas monitoring and control system according to an embodiment of the present application;

2 is a schematic diagram of a real-time monitoring water loss meter of an oil drilling real-time monitoring and control system according to an embodiment of the present application;

3 is a schematic diagram of real-time monitoring of sand content and solid phase content measuring instrument for real-time oil well drilling monitoring and control system according to an embodiment of the present application;

4-7 are schematic diagrams of a pressureless variable flow meter of an oil drilling real-time monitoring and control system according to an embodiment of the present application;

Figure 8a is a schematic view of a mud hydrometer at a drilling site according to an embodiment of the present application;

8b is a schematic diagram of an electronic mud hydrometer at a drilling site according to an embodiment of the present application;

9-10 are schematic diagrams of a liquid density meter for online real-time monitoring of an oil drilling real-time monitoring and control system according to an embodiment of the present application;

11-12 are schematic diagrams of an extreme pressure lubrication apparatus for on-line real-time monitoring of oil wells in an oil drilling real-time monitoring and control system according to an embodiment of the present application;

13 is a schematic diagram of real-time monitoring automatic sand collecting and spectrometer for oil drilling real-time monitoring and control system according to an embodiment of the present application;

FIG. 14 is a schematic diagram of a network of a real-time oil well drilling monitoring and control system according to an embodiment of the present application.

Reference mark:

Real-time monitoring of the viscometer at the drilling site:

101: a first outer cylinder; 102: a second outer cylinder; 103: a third outer cylinder; 104: a drilling fluid tank;

105: first support plate; 106: bracket; 107: drilling fluid outlet;

108: drilling fluid inlet; 109: twisted wire spring; 110: angle sensor;

111: a first inner cylinder; 112: a ring gear; 113: a first gear; 114: a first transmission shaft;

115: a second support plate; 116: a first timing pulley;

Real-time monitoring of the water loss meter on site:

201: transmission belt; 202: filter tube; 203: reducer; 204: outer tube;

205: drilling fluid infusion tube; 206: one-way valve; 207: backwash water outlet pipe;

208: backwash valve; 209: filtrate container; 210: flow meter;

211: filter tube gland; 212: backwash water inlet pipe; 213: connecting rod; 214: hydraulic device;

215: return valve; 216: mud pump; 217: support frame; 218: wireless transmitter;

219: high pressure backwashing water pump; 220: transmission member; 221: shaft seal; 222: metal tube;

223: filter tube; 224: scraper; 225: pressure sensor; 226: support frame; 228: support member;

229: support frame; 230: annular groove; 231: water inlet hole; 232: drive wheel; 233: base;

Real-time monitoring of sand content and solid phase content analyzer:

301: first vibrating screen; 302: second vibrating screen; 303: drilling fluid infusion tube;

304: filtrate tank; 305: flushing tube; 306: bracket; 307: first container;

308: first weight sensor; 309: wireless signal transmitter; 310: centrifuge;

311: filter residue outlet; 312: filter filtrate discharge port; 313: second container;

314: second weight sensor; 315: wireless signal transmitter; 316: flocculant input tube;

317: water pipe; 318: connecting pipe; 319: mud pump; 320: first support frame;

321: second support frame; 322: bracket; 323: third support frame;

324: centrifuge drive; 325: lower support frame; 326: upper support frame;

327: base; 328: agitator;

Pressureless variable flow meter:

401: buffer tank; 402: level gauge; 403: programmable controller; 404: computer;

405: speed regulating motor; 406: volumetric pump; 407: light source; 408: float; 409: photosensitive resistor;

410: stepping motor; 411: plunger pump; 412: ultrasonic type liquid level sensor;

Liquid density meter for online real-time monitoring:

801: mud cup; 802: support frame; 803: game code; 804: electronic balance;

Densitometer for online real-time monitoring of liquids:

901: flushing device; 902: container centralizer; 903: liquid inlet; 904: temperature sensor;

905: container; 906: overflow tube; 907: display; 908: programmable controller;

909: load cell; 910: liquid outlet; 911: computer;

Extreme pressure lubricator for on-line real-time monitoring of drilling:

1101: computer; 1102: wireless data transmission module; 1103: programmable controller;

1104: current transmitter; 1105: variable frequency motor; 1106: hydraulic cylinder; 1107: torque bracket;

1108: slip ring; 1109: slider;

Automatic sand and spectrum analyzer:

1301: metering pump; 1302: flushing tube; 1303: first vibrating screen; 1304: second vibrating screen;

1305: Spectrometer; 1306: Conveyor belt; 1307: Weight sensor; 1308: Sand container;

1309: automatic bagging machine;

detailed description

The above described objects, features and advantages of the present application will become more apparent and understood.

FIG. 14 is a schematic diagram of a network of a real-time oil well drilling monitoring and control system according to an embodiment of the present application. As shown in Figure 14, the oil drilling real-time monitoring and control system includes a real-time monitoring unit, a real-time display and control unit. The real-time monitoring unit includes a drilling fluid performance monitoring instrument, a geological logging monitoring instrument, and a drilling engineering parameter monitoring instrument. The real-time monitoring unit is configured with a number of sensors, and the signals monitored by the sensors are transmitted by the wireless sensor network system. The real-time display and control unit comprises a computer processing device and a plurality of display terminals and a central control station, the computer processing device receives and processes signals monitored by the sensors transmitted by the wireless sensor network system, and displays the monitoring data through the display terminal, the operator or the on-duty personnel According to the monitoring data displayed on the display terminal, the control dial motor, the drill motor, the mud pump motor, the centrifuge motor, the vibrating screen motor, the desander and the desilter are adjusted.

The signals monitored by the sensors on each instrument are transmitted to the well team computer processing equipment by the wireless sensor network system (referred to as WSN), and various data are converted into charts by computer software to display on the display in real time, density, flow rate, hydrogen sulfide. The data is provided with an alarm device. Through remote transmission (satellite or mobile phone system, etc.) to the base computer, real-time monitoring and data sharing of dozens to thousands of drilling teams of drilling companies and group companies can be realized.

Drilling fluid performance monitoring instruments include real-time monitoring viscometer on the drilling site, real-time monitoring water loss meter on site, real-time monitoring of sand content and solid content analyzer, on-site real-time monitoring lubrication coefficient tester, density tester, temperature tester, conductance The rate meter, H ₂ S detector and drilling fluid inlet and outlet flow meter are installed at the drilling site.

Geological logging monitoring instruments include spectrometers, gas chromatographs, total hydrocarbon content analyzers, automatic sand and fluorescence analyzers, hydrogen flame chromatographs, thermal conductivity chromatographs, carbonate analyzers, mudstone densitometers, thermal vacuum Distillation full degassing device, binocular microscope, oven and PK analyzer.

The drilling engineering parameter monitoring instrument includes a variety of sensors and wireless data transmission devices, and the sensor includes a hanging weight sensor, a vertical pressure sensor, a sleeve pressure sensor, a torque sensor, a rotational speed sensor, a pumping sensor, Winch sensor, generator voltage sensor and current sensor.

The drilling control system includes turntable motor control, drill motor control, mud pump motor control, centrifuge motor control, shaker control, desander control and desilter control.

According to the data of the display, the on-duty personnel control and adjust various motors through the programmable controller to achieve fast and safe drilling, and to timely and accurately discover the purpose of the oil and gas layer.

The drilling team forms a small local area network, and displays display terminals in the drilling platform, the well team duty room, the mud duty room, the geological duty room, and the technician duty room.

The oil drilling real-time monitoring and control system also includes a remote transmission unit configured to transport and share real-time data monitored by the real-time monitoring unit. The company's engineering and technical personnel can remotely guide the on-site construction based on real-time monitoring data.

The oil drilling real-time monitoring and control system can monitor and control the performance parameters such as viscosity, shear force, medium pressure water loss, sand content and solid phase content, lubrication coefficient, density, temperature, inlet and outlet flow rate in the drilling fluid, so that The drilling fluid performance index and formation pressure coefficient, drilling fluid hydraulic parameters can be accurately displayed on the computer monitor in real time through computer processing, so that the construction personnel can accurately grasp the performance of the drilling fluid, and can take corresponding measures in time to deal with possible threats to drilling. All accidents of safety.

1 is a schematic diagram of a real-time monitoring viscometer of a drilling site for a real-time oil and gas monitoring and control system according to an embodiment of the present application. As shown in FIG. 1 , the real-time monitoring viscometer on the drilling site includes a drilling fluid tank 104. At least two rotational viscometers of different rotational speeds are installed in the drilling fluid tank 104, and the rotary viscometer is suspended in the drilling fluid tank 104 through the bracket, and the drilling fluid One end of the groove 104 is provided with a drilling fluid inlet 108, the other end is provided with a drilling fluid outlet 107, the rotary viscometer is provided with an outer cylinder, and each outer cylinder is provided with an inner cylinder, and an inner end of each inner cylinder is provided with an angle sensor. 110. A power transmission component is mounted on an outer wall of an upper portion of each outer cylinder, and the power transmission component is connected to the motor through a transmission shaft. In order to enable the rotary viscometer to be better and firmly installed in the drilling fluid tank 104, and to achieve a stable, continuous rotation speed, the viscosity signal of the drilling fluid can be sent to the computer more timely and accurately, in each outer cylinder The upper part of the outer wall is provided with a ring gear 112. The ring gear 112 meshes with the gear, the gear is connected with the transmission shaft, the transmission shaft is connected to the motor through a timing belt, the motor is connected with the first support plate 105, and the first support plate 105 passes through the bracket 106 and the drilling fluid. The slots 104 are connected.

According to commonly used calculation data of viscosity, shear force and rheology, the first outer cylinder 101, the second outer cylinder 102 and the third outer cylinder 103 can be installed in the drilling fluid tank 104, and the rotation of each outer cylinder passes through the gear and The timing belt engagement is driven by a motor.

The first outer cylinder 101, the second outer cylinder 102, and the third outer cylinder 103 have the same height and the same diameter, and the rotational speeds are different. The rotational speed of the first outer cylinder 101 is 600 rpm, and the rotational speed of the second outer cylinder 102 is 300 rpm. In minutes, the third outer cylinder 103 has a rotational speed of 3 rpm, which enables monitoring of various viscosity indexes. That is, the manual six-speed rotational viscometer was replaced by three different rotational speed viscometers.

In order to accurately transmit the drilling fluid viscosity signal, a torsion spring 109 is mounted on the upper end of the inner cylinder, and the angle sensor 110 is mounted on the twisted spring 109.

An inner cylinder is installed in each outer cylinder, and the structures of the plurality of outer cylinders and the plurality of inner cylinders are the same. A twisted wire spring is mounted on the upper end of each inner cylinder, and each twisted wire spring 109 is connected to a respective angle sensor 110.

A cylindrical cover is disposed on the outer circumference of the sensor, and the upper end of the cylindrical cover is connected to the support plate.

A second support plate 115 is mounted on the bracket 106, the bearing is coupled to the second support plate 115, and the bearing is located at the upper end outer wall of the inner cylinder.

The three rotary viscometers have the same structure, and have the same connection relationship with the drilling fluid tank 104 and the support frame. As shown in FIG. 1, the three rotary viscometers installed in the drilling fluid tank 104 have the following structures: the first outer cylinder 101 is installed. a first inner cylinder 111, the first outer cylinder 101 is meshed with the first gear 113 via a ring gear 112, the first gear 113 is coupled to the first transmission shaft 114, and the first transmission shaft 114 is coupled to the first timing pulley 116; A second inner cylinder is mounted in the outer cylinder 102, and a third inner cylinder is mounted in the third outer cylinder 103. The three outer cylinders can be pulled by one motor.

Rotating viscometers can measure: apparent viscosity, plastic viscosity, dynamic shear force, static shear force; plastic fluid flow index n and consistency coefficient k value. The real-time monitoring viscometer enters the drilling fluid into the drilling fluid tank 104 through the liquid inlet, three rotational viscometers of different rotation speeds in the drilling fluid tank 104, the first outer cylinder 101 rotates at 600 rpm, and the second outer cylinder The rotation speed of 102 is 300 rpm, and the rotation speed of the third outer cylinder 103 is 3 rpm. Since the torsion spring 109 is installed at the upper end of each inner cylinder, when the outer cylinder rotates, the drilling fluid pushes its corresponding inner cylinder to rotate accordingly. The angle sensor transmits three electrical signals to the computer. These three electrical signals are processed by computer software and display the apparent viscosity, plastic viscosity, dynamic shear force, static shear force, n value and other data on the computer screen in real time. . For example, the electrical signal emitted by the first rotary viscometer shows the apparent viscosity on the computer, and the electrical signals emitted by the first and second rotational viscometers can be calculated to show the plastic viscosity, the dynamic shear force and the n value. Etc., the signal from the third rotational viscometer can show static force on the computer.

The real-time monitoring viscometer on the drilling site can monitor the viscosity, shear force, etc. of the drilling fluid in real time. The rotation speeds of several outer cylinders installed in the middle are different, and the angle of rotation of the inner cylinder is different. The angle of the inner cylinder corresponding to different rotation speeds is transmitted to the computer through the angle sensor, and then converted into a chart on the screen by signal processing for display. The monitoring personnel can read the data such as the viscosity and shear force of the drilling fluid in real time, so as to take corresponding safety protection measures according to the data such as viscosity and shear force to avoid the occurrence of drilling accidents.

2 is a schematic diagram of a real-time monitoring water loss meter of an oil drilling real-time monitoring and control system according to an embodiment of the present application. As shown in FIG. 2, the structure of the on-site real-time monitoring water loss meter comprises: a base 233, the base 233 supports the outer tube 204 through the support member 228, and the outer tube 204 supports the filter tube 202 through the shaft seals 221 at both ends, the outer tube 204 and the well The liquid infusion tube 205 is connected at one end, and the other end of the drilling fluid infusion tube 205 is connected with the mud pump 216. The one-way valve 206 is installed on the drilling fluid infusion tube 205. The sealed end of the filter tube 202 is mounted with the transmission member 220, and the transmission member 220 passes through the transmission belt 201. The reducer 203 is connected, the filtrate container 209 is installed below the other end of the filter tube 202, the filtrate container 209 is connected to the flow meter 210, the flow meter 210 is connected to the port or the wireless transmitter 218, and the shaft seal is installed at both ends of the outer tube 204 in the longitudinal direction; A pressure sensor 225 and a return valve are installed on the drilling fluid infusion tube 205. The filtration pressure of the drilling fluid is pressurized by the mud pump, and the pressure is controlled by a pressure sensor 225, a programmable controller, a variable frequency motor, and the like.

In order to balance the operation of the filter tube 202 for a long period of time, the drilling fluid data is kept accurate, a backwashing device is installed, a backwash water inlet pipe 212 is installed on the hydraulic expansion valve 214, and the other end of the backwash water inlet pipe 212 is connected to the high pressure backwash water pump 219. . A hydraulic expansion valve 214 is mounted on the base 233 by a support member. The hydraulic expansion valve 214 is connected to one end of the connecting rod 213. The other end of the connecting rod 213 is provided with a filter tube gland 211. The filter tube gland 211 defines an annular groove 230. A water inlet hole 231 is defined in the 211, the water inlet hole 231 is connected to one end of the backwash water inlet pipe 212, and the other end of the backwash water inlet pipe 212 is connected to the high pressure backwash water pump 219.

The filter tube 202 is kept balanced by filtration, and a scraper 224 is mounted on the inner wall of the outer tube 204. One end of the scraper 224 is connected to the inner wall of the outer tube 204, and the other end of the scraper 224 is kept at an appropriate distance from the outer wall of the filter tube 202.

The preferred embodiment of the filter tube 202 is that the transmission member 220 mounted at one end of the filter tube 202 is a sprocket, the sprocket is engaged with the driving wheel 232 through the chain 201, and the driving wheel 232 is connected to the reducer 203 through the rotating shaft. The transmission is stable and not easy to damage.

The filter tube 202 is composed of a metal tube 222 and a filter tube 223. The filter tube 223 is uniformly distributed with a filter hole having a diameter of 2-100 micrometers. The rotation speed of the filter tube 202 is set to 2-30 rpm.

When the on-site real-time monitoring of the water loss meter is working: the mud pump 216 sends the drilling fluid through the drilling fluid input pipe 205 into the outer pipe 204. Under the action of the pressure, the drilling fluid filtrate passes through the filter hole on the filter pipe 202 to filter. The tube 202 is further flowed into the filtrate container 209, and the flow meter 210 measures the flow of the filtrate to the computer through the port or wireless transmitter 218. The computer will convert the weight of the filtrate per unit time and unit area into the medium-pressure water loss index under a certain pressure, and display it through the computer screen to achieve the purpose of real-time monitoring. After the filter tube 202 is operated for a period of time, in order to maintain the filter balance, the hydraulic expansion valve 214 is activated, and the push link 213 is moved to the left in the horizontal direction, thereby driving the filter tube cover 211 to move to the left, and the annular groove 230 is caught in the filter tube 202. On the wall, the high-pressure backwashing water pump 219 is turned on, and the washing water flows into the filter pipe 202 through the backwash water inlet pipe 212 and the water inlet hole 231, and the residual mud in the filter pipe 202 is backwashed. At this time, the mud pump 216 is turned off, the backwash valve 208 is turned on, and the water after flushing the filter tube is discharged through the backwash water outlet pipe 207 and the backwash valve 208.

The startup, shutdown, and switching of the filtering device and the backwashing device are all completed by computer control.

The on-site real-time monitoring of the water loss meter enables real-time monitoring of the medium-pressure water loss index of the drilling fluid during the drilling process. The utility model uses a mud pump to transport the drilling fluid into the annular space between the outer tube and the filter tube. The drilling fluid is filtered by the filter tube and then flows out of the filter tube into the filtrate container, and is measured by the flow meter, and then passed through the programmable controller. The signal is passed to the computer. The filtration pressure of the drilling fluid is pressurized by the mud pump, and the pressure is controlled by a pressure sensor, a programmable controller, a variable frequency motor, and the like. During the working process, the filter tube drives the sprocket to rotate slowly through the motor, and the scraper scrapes off the thick mud cake on the filter tube to balance the filtration. Under a certain pressure, after the flow of the unit time and unit area filtrate is input into the computer, the computer software can convert the medium pressure water loss index and display it through the computer screen.

3 is a schematic diagram of an on-site real-time monitoring of sand content and solid phase content measuring instrument for an oil drilling real-time monitoring and control system according to an embodiment of the present application. The sand drilling and solid phase content measuring instrument for real-time monitoring of oil drilling is mainly composed of a vibrating screen and a horizontal screw centrifuge, the vibrating screen is used for monitoring the sand content, and the horizontal screw centrifuge is used for monitoring the solid phase content, and the WSN system A weight signal containing the amount of sand and solid phase is emitted to the computer and displayed through a computer screen. As shown in FIG. 3, the on-site real-time monitoring of the sand content and the solid phase content analyzer comprises: a drilling fluid infusion pipe 303, and a first vibrating screen 301 or a cylindrical sieve disposed below the outlet of the drilling fluid infusion pipe 303, first A second vibrating screen 302 or a cylindrical screen is disposed below the vibrating screen 301. The first vibrating screen 301 or the cylindrical screen is located above the second vibrating screen 302 or the cylindrical screen, and the first vibrating screen 302 or the cylindrical screen is disposed first. The container 307 is connected to the first weight sensor 308. The first electronic scale 308 is mounted with a first port or wireless signal transmitter 309. The outlet of the flushing tube 305 is located above the screen surface of the second vibrating screen 302 or the cylinder. The upper opening of the sieve, the filtrate tank is arranged below the sieve surface of the first vibrating screen 301 or the cylindrical sieve 304, the filtrate tank 304 is connected to the centrifuge 310 through a connecting pipe 318, the second container 313 is installed at the filter dregule outlet 311 of the centrifuge 310, the second container 313 is connected to the second weight sensor 314, and the second weight sensor 314 is connected to the second port or wireless. Signal transmitter 315.

Real-time monitoring of oil drilling The filtrate filtered by the first vibrating screen 301 of the sand content and solid phase content analyzer is added with appropriate flocculant and water according to the viscosity and consistency of the filtrate before entering the centrifuge, stirred uniformly and pumped into the centrifuge. In the machine, in order to better separate the solid phase content in the drilling fluid, for this purpose, a solution is provided for installing the flocculant inlet pipe 316 and the water pipe 317, and the outlets of the flocculant inlet pipe 316 and the water pipe 317 are located above the filtrate tank 304. A stirrer 328 is installed on the filtrate tank 304.

The working process of the sand content and solid phase content analyzer for real-time monitoring of oil drilling is: the drilling fluid is pumped into the first vibrating screen 301 or the cylindrical sieve, and the sieve is dropped onto the second vibrating screen 302 or the cylindrical sieve below. Then, the clean water is washed into the second vibrating screen 302 or the cylindrical sieve through the flushing pipe 305 to wash the sieve, and the clean sand falls into the first container 307 under vibration, and the first weight sensor 308 passes its weight through the first The port or wireless signal transmitter 309 is sent to the computer for processing. At the same time, the filtrate in the filtrate tank 304 below the first vibrating screen 301 or the cylindrical sieve is piped into the centrifuge 310, and the filtered residue after centrifugation enters the second container 313, and is weighed by the second weight sensor 314. The weight signal is sent to the computer for processing. The two electrical signals received by the computer are converted to a chart by software and displayed on the screen in real time.

4-7 are schematic diagrams of a pressureless variable flow meter of a petroleum drilling real-time monitoring and control system according to an embodiment of the present application. As shown in FIGS. 4 and 5, the structure of the pressureless variable flow meter is composed of a buffer tank 401, a liquid level gauge 402, a programmable controller 403, a computer 404, a speed regulating motor 405, and a volume pump 406. The liquid level meter 402 is installed inside the buffer tank 401, and is connected to the programmable controller 403 and the computer 404 through the data line to transmit the liquid level signal, and the programmable controller 404 is connected to the speed regulating motor 405 through the data line, according to The signal of the level gauge 402 controls the rotational speed of the speed regulating motor 405, and the speed regulating motor 405 is connected to the volumetric pump 406 at the outlet of the buffer tank 401. The buffer tank 401 is kept at a constant liquid level, and the computer 404 can be converted into a flow rate according to the rotation speed of the speed control motor 405.

As shown in Figures 6 and 7, it is an ultra-micro flow measuring instrument for the drilling fluid online medium pressure filtration loss measuring instrument, which is composed of a U-shaped transparent tube buffer tank, a photoelectric sensor type liquid level gauge 402 or an ultrasonic type liquid level sensor 412, The programming controller 403, the computer, the stepping motor 410, and the micro plunger pump 411 are configured. The medium pressure filtration loss of the drilling fluid is 30 minutes of fluid loss, generally only a few milliliters, that is to say only a few tens of microliters per minute. Such a small flow rate does not currently have such a flow meter, only through the micro-piston pump 411 To achieve, miniature piston pump 411 completes a work cycle that can be as small as a few microliters. Taking FIG. 6 as an example, the light source 407 is irradiated. When the amount of fluid loss is large, the float 408 floats upward, the luminous flux is large, and the resistance of the photoresistor 409 becomes small. At this time, the electrical signal is transmitted to the computer controller through the wire to program the controller. The computer controller transmits the command to the stepping motor driver, and the stepping motor 410 increases the rotation speed, drives the plunger pump 411 to lower the liquid level, and when the flow rate is small, the float 408 floats downward, the luminous flux is small, and the resistance of the photoresistor 409 is changed. Large, at this time, the electrical signal can be transmitted to the computer controller through the wire to program the controller, the computer controller transmits the command to the stepper motor driver, and the stepping motor 410 reduces the rotational speed to raise the liquid level, so the U-shaped transparent tube The buffer tank has maintained a constant liquid level, the flow rate is large, the speed of the speed regulating motor 405 is high, the flow rate is small, and the speed of the speed regulating motor 405 is slow, so that the flow rate can be measured according to the speed of the speed regulating motor 405. By setting, the computer 404 can display the instantaneous flow rate and transmit it to the oil drilling real-time monitoring and control system through the WSN. The flow meter shown in Fig. 7 is an ultrasonic type liquid level sensor 412, which measures the liquid level in an ultrasonic wave and indirectly controls the motor rotation speed.

8a is a schematic view of a mud hydrometer at a drilling site according to an embodiment of the present application; and FIG. 8b is a schematic diagram of an electronic mud hydrometer at a drilling site according to an embodiment of the present application. As shown in Fig. 8a and Fig. 8b, the mud hydrometer is a balance of unequal arms, and its lever knife edge rests on a seat that can be fixedly mounted on the workbench. The left side of the lever is a mud cup 801, and the right side of the lever is The travel code 803 device of the scale has a support frame 802 on the right side of the travel code 803, and the moving play code 803 can directly read the mud weight on the scale. The electronic mud density meter is an electronic balance 804 equipped with a fixed mass and volume of mud cup, which can be read directly by the conversion. The above mud hydrometer cannot be measured online.

9-10 are schematic diagrams of a liquid density meter for online real-time monitoring of an oil drilling real-time monitoring and control system according to an embodiment of the present application. As shown in FIG. 9 and FIG. 10, the liquid densitometer for online real-time monitoring has a structure including a liquid inlet 903, a container 905 with an overflow tube 906, a load cell 909, a programmable controller 908, and a flushing device 901. The temperature sensor 904, the display 907 or the computer 911, the programmable controller 908 is connected to the display 907 or the computer 911 via a data line or a wireless data transmission module. The principle is: when the flow rate of the liquid inlet 903 exceeds the flow rate of the liquid outlet 910, the liquid will flow out through the overflow pipe 906, so that the volume in the container 905 remains constant, the weight is measured by the load cell 909, and the programmable controller 908 passes the temperature correction. It can be converted to density and displayed on the display. When remote monitoring is required, the programmable controller 908 transmits the data to the computer 911 through the wireless data transmission module, and the density is displayed on the computer display after being corrected by the computer software temperature. The container is washed by the rinsing device 901 when the timing or density changes greatly during use.

11-12 are schematic diagrams of an extreme pressure lubrication apparatus for on-line real-time monitoring of oil wells in an oil drilling real-time monitoring and control system according to an embodiment of the present application. As shown in FIG. 11 and FIG. 12, the structure of the extreme pressure lubrication instrument for online real-time monitoring of drilling is: computer 1101, wireless data transmission module 1102, programmable controller 1103, current transmitter 1104, frequency conversion motor 1105 The hydraulic cylinder 1106, the torsion bracket 1107, the slip ring 1108, and the slider 1109 are composed. The extreme pressure lubrication instrument used for on-line real-time monitoring of drilling is to transform the laboratory with EP extreme pressure lubrication instrument.

First, the manual pressure torque wrench is changed to the automatic pressure controlled by the computer 1101. The variable frequency motor 1105 is used to drag the load and the slider 1109 and the slip ring 1108 are matched, and the rotation speed of the slip ring 1108 is specified to be 60 rpm. The force arm of the torsion bracket 1107 has a force of 444.8 N for the slider 1109 to act on the slip ring 1108, and a friction coefficient of 0.34 for the distilled water. The second is to collect the collected motor current data signal through the programmable controller 1103, through the data line or wireless data transmission module 1102 into the drilling real-time monitoring and control system acquisition module, converted into friction coefficient becomes part of the drilling real-time monitoring and control system. Third, the working time and working procedure of the drilling fluid on-line measurement of the extreme pressure lubricator are controlled by the computer 1101 through the programmable controller 1103.

13 is a schematic diagram of real-time monitoring automatic sand collecting and spectrometer for oil drilling real-time monitoring and control system according to an embodiment of the present application. As shown in Figure 13, the structure of the automatic sanding and spectrometer for real-time monitoring of drilling is: including drilling fluid infusion pipe, the drilling fluid infusion pipe is equipped with a metering pump 1301, and one or two vibrating screens are arranged below the outlet of the drilling fluid infusion pipe. Or a cylindrical sieve, the first vibrating screen 1303 is disposed, and a second vibrating screen 1304 is disposed below the first vibrating screen 1303. The first vibrating screen 1303 and the second vibrating screen 1304 are at an angle, and the rock flowing out from the first vibrating screen 1303 The chips enter the second vibrating screen 1304, and the outlet of the flushing tube 1302 is located above the screen surface of the two vibrating screens 1304. If the system is provided with a solid phase content meter, only the second vibrating screen 1304 is flushed, and the washed debris is from the second vibrating The sieve 1304 flows into the spectrometer 1305 through the belt conveyor to perform spectrometry, and the spectral signal is transmitted to the computer, and the data is combined with the drilling time, the depth of the well, the mud return speed and the like collected by the drilling real-time monitoring and control system according to the weight of the sand, and the computer software is used. The oil saturation data of a certain depth of the oil and gas layer is obtained by the treatment. The spectrally measured cuttings flow into the sand container 1308 via the conveyor belt 1306, and the weight of the sand for a predetermined time is measured by the weight sensor 1307 for calculating the oil saturation and the sand content of the drilling fluid. According to the data of drilling time, well depth and mud return speed, the computer orders the sand container to unload the sand once every 1.0m or the specified footage. The cuttings enter the automatic bagging machine 1309 package, the date of the coding machine and the depth data of the oil and gas layer. .

In addition, the oil drilling real-time monitoring and control system also includes a drilling fluid inlet and outlet flow meter for inlet flow measurement and outlet flow measurement. The inlet flow rate is determined by measuring the speed of the mud pump indirectly. The outlet flow rate is measured by a non-pressure variable flow meter. Measurement, data is displayed by computer.

The monitoring or control instrument not described in detail in the present application can refer to the related art in the prior art.

The oil drilling real-time monitoring and control system provided by the embodiment provided by the above application can solve the problem that only the part of the geological logging and drilling engineering parameters existing in the comprehensive logging instrument can be monitored, the drilling fluid performance parameters, the drilling engineering parameters, the geology Comprehensive on-line real-time monitoring and control of logging parameters, timely adjustment of drilling fluid performance according to changes in formation pressure, optimization of parameter drilling, improvement of drilling speed, shortening of drilling cycle, saving of drilling costs, realization of scientific drilling, and drilling The liquid, drilling engineering and geological logging are integrated into one, and processed by computer, which becomes a comprehensive monitoring and control system integrating multiple data acquisition, display, processing and control of the well site to ensure fast and safe drilling; and it can meet safety. Optimize drilling, comprehensively judge the multi-faceted needs of oil and gas water layers, comprehensively master drilling engineering data through online real-time monitoring and control system, and enable on-site construction personnel to adjust drilling time, drilling pressure, suspension weight, riser pressure, turntable torque and speed in real time. Achieve safely optimized drilling and timely discovery of oil and gas reservoirs .

The above is only a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application. It should be covered by the scope of protection of this application. Therefore, the scope of protection of the present application should be determined by the scope of protection of the claims.

Claims

Oil drilling real-time monitoring and control system, which includes:

a real-time monitoring unit, the real-time monitoring unit includes a drilling fluid performance monitoring instrument, a geological logging monitoring instrument, and a drilling engineering parameter monitoring instrument; the real-time monitoring unit is configured with a plurality of sensors, and the signal monitored by the sensor is transmitted by the wireless sensor network system ;

A real-time display and control unit is a control center of the system, the real-time display and control unit comprising a computer processing device and a plurality of display terminals and a central control station, the computer processing device receiving and processing the location transmitted by the wireless sensor network system The signal monitored by the sensor is displayed, and the monitoring data is displayed by the display terminal, and the operator adjusts the control dial motor, the drill motor, the mud pump motor, the centrifuge motor, the vibrating screen motor, the desander, and the monitoring data displayed by the display terminal. Desilter.
The oil drilling real-time monitoring and control system according to claim 1, wherein the drilling fluid performance monitoring instrument comprises a real-time monitoring viscosity meter on the drilling site, a real-time monitoring water loss meter on site, a real-time monitoring sand content and a solid phase content measuring instrument, and a site. Real-time monitoring of the lubrication coefficient meter, density meter, temperature meter, conductivity meter, H 2 S detector and drilling fluid inlet and outlet flow meter.
The oil drilling real-time monitoring and control system according to claim 1, wherein the geological logging monitoring instrument comprises a spectrometer, a gas chromatograph, an all-hydrocarbon content measuring instrument, an automatic sanding and fluorescence content measuring instrument, a hydrogen flame chromatograph, and a thermal conductivity. Chromatograph, carbonate analyzer, mudstone densitometer, hot vacuum distillation full degassing device, binocular microscope, oven and PK analyzer.
The oil drilling real-time monitoring and control system according to claim 1, wherein said automatic sand collecting and fluorescence content measuring instrument comprises a drilling fluid infusion pipe, the drilling fluid infusion pipe is provided with a metering pump, and one or two of the drilling fluid infusion pipe are arranged below the outlet. a vibrating screen or a cylindrical screen, the outlet of the flushing tube is located above the screen surface of the two vibrating screens, and the washed cuttings flow from the second vibrating screen into the spectrometer for spectrometry, and the spectral signals are transmitted to the computer, according to the sand The weight is combined with the drilling time, well depth, and mud return speed collected by the real-time monitoring system of the drilling. The oil saturation data of the oil and gas layer is obtained by computer software processing. The measured debris is transferred into the sand container through the conveyor belt. The weight of the sand is determined by the weight sensor for calculating the oil saturation and the sand content of the drilling fluid; the computer according to the drilling time, the depth of the well, the mud return speed data, each meter of the meter or the specified footage, the command of the sand container unloading Once in the sand, the cuttings enter the automatic bagging machine package, and the code machine is dated and the depth of the oil layer.
The oil drilling real-time monitoring and control system according to claim 1, wherein said drilling engineering parameter monitoring The instrument includes a variety of sensors and wireless data transmission devices. The sensors include a suspension weight sensor, a vertical pressure sensor, a pressure sensor, a torque sensor, a rotational speed sensor, a pumping sensor, a winch sensor, a generator voltage sensor, and a current sensor.
The oil drilling real-time monitoring and control system according to claim 1, wherein said drilling control system comprises a rotary motor control, a drill motor control, a mud pump motor control, a centrifuge motor control, a shaker control, a desander control, and a desilting machine. Control.
The oil rig real-time monitoring control system of claim 1 further comprising a remote transmission unit configured to communicate and share real-time data monitored by said real-time monitoring unit.
The oil drilling real-time monitoring and control system according to claim 1, wherein said drilling site real-time monitoring viscometer comprises a drilling fluid tank, and at least two rotational viscometers of different rotational speeds are installed in said drilling fluid tank, said rotational viscometer passing The stent is suspended in the drilling fluid tank, one end of the drilling fluid tank is provided with a drilling fluid inlet, and the other end is provided with a drilling fluid outlet, the rotary viscometer is provided with a plurality of outer cylinders, each of which is An inner cylinder is installed in each of the outer cylinders, and an angle sensor is installed on an upper end of each of the inner cylinders, and a power transmission component is mounted on an outer wall of an upper portion of each of the outer cylinders, and the power transmission component is connected to the motor through a transmission shaft.
The oil drilling real-time monitoring and control system according to claim 1, wherein said on-site real-time monitoring water loss meter comprises a base, said base supporting an outer tube through a support member, said outer tube supporting a filter tube through a shaft seal at both ends, The outer tube is connected to one end of the drilling fluid infusion tube, and the other end of the drilling fluid infusion tube is connected with a mud pump, and a check valve is installed on the drilling liquid infusion tube, and one end of the sealed end of the filter tube is provided with a transmission member, and the transmission member is Connected to the reducer via a drive belt, a filtrate container is installed below the other end of the filter tube, the filtrate container is connected to a flow meter, the flow meter is connected to a port or a wireless transmitter, and both ends of the outer tube are installed in the longitudinal direction. The shaft seal; a pressure sensor for adjusting a filtration pressure and a return valve are installed on the drilling fluid infusion tube.
The oil drilling real-time monitoring and control system according to claim 1, wherein said on-site real-time monitoring sand content and solid phase content measuring instrument comprises a drilling fluid infusion pipe, and a first vibrating screen or a circle is arranged below the outlet of the drilling fluid infusion pipe a second sieve or a cylindrical sieve disposed below the first vibrating screen, the first vibrating screen is located above the second vibrating screen, and a first container is disposed below the second vibrating screen, The first container is connected to the weight sensor, and the weight sensor is connected to the wireless signal transmitter or port, and the outlet of the flushing tube is located above the screen surface of the second vibrating screen, and is disposed below the first vibrating screen a filtrate tank is disposed, the filtrate tank is connected to the centrifuge through a connecting pipe, a second container is installed at the outlet of the centrifuge filter residue, the second container is connected to the second weight sensor, and the wireless signal is connected to the second weight sensor The transmitter or port, the signals monitored by both instruments are transmitted by the wireless transmitter or data line.
The oil drilling real-time monitoring and control system according to claim 1, wherein the determination of the outlet flow rate in the drilling fluid inlet and outlet flow meter is performed by a pressureless variable flow meter including a buffer tank and a liquid level meter. , computer, programmable controller, speed control motor and volumetric pump, the inlet flow is measured according to the stroke of the mud pump.
The oil drilling real-time monitoring and control system according to claim 1, wherein said density measuring instrument is a liquid density meter for online real-time monitoring, comprising: a container for overflowing and discharging the liquid inlet, a load cell, and a programmable control The device, the flushing device, the temperature sensor, the display or the computer, the programmable controller is connected to the display or computer via a cable or wireless data transmission module.
The oil drilling real-time monitoring and control system according to claim 1, wherein the on-site real-time monitoring lubrication coefficient measuring instrument is an extreme pressure lubricating device for online real-time monitoring of drilling, which comprises: a computer, a wireless data transmission module or a port, and Programming controller, current transmitter, variable frequency motor, hydraulic cylinder, torque bracket, slip ring and slider; transform the laboratory with EP extreme pressure lubrication instrument, change the manual pressure torque wrench to computer controlled automatic Pressurize, the force acting on the slip ring is 444.8N, and the friction coefficient of the distilled water is 0.34; the collected motor current data signal is processed by the current transmitter, programmable controller, through the data line or wireless The digital transmission module is connected to the acquisition module of the drilling real-time monitoring and control system, and becomes a part of the drilling real-time monitoring and control system; the working time and working procedures of the extreme pressure lubrication instrument are controlled by the computer through the programmable controller.