Drilling fluid performance online monitoring system with automatic cleaning function

Abstract

The utility model discloses a drilling fluid performance online monitoring system with an automatic cleaning function, which belongs to the technical field of drilling fluid performance monitoring and comprises a medium input and output module, an ion concentration measuring module and a rheological property measuring module. By means of the mode, the integrated drilling fluid performance monitoring device has the functions of drilling fluid extraction, drilling fluid performance parameter measurement, clear water flushing, air flushing and the like. The automatic cleaning function of the system comprises comprehensive water washing and air flushing on a pipeline through which drilling fluid flows and a contact surface of measuring equipment in contact with the drilling fluid, so that system errors caused by solidification of the drilling fluid after the drilling fluid is attached to the pipeline and a sensor measuring point to the next measurement are avoided; according to the utility model, the problems of incomplete functions of parameter measurement, cleaning and the like, poor system operation efficiency, poor system robustness, system error increase caused by multiple times of system operation and the like of the existing drilling fluid on-line monitoring equipment are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling fluid performance monitoring, in particular to an online drilling fluid performance monitoring system with an automatic cleaning function. Background Art

[0002] With the development of the oil drilling industry, drilling fluid, as the blood of the drilling industry, needs to meet more and more functional requirements for drilling and completion. Drilling fluid performance parameters such as temperature, density, apparent viscosity, plastic viscosity, dynamic shear force, ion concentration, etc. directly affect the efficiency and safety of oil and gas well production. Therefore, it is very important to design a drilling fluid online monitoring system with complete functions, high precision and high operating efficiency.

[0003] Traditional drilling fluid performance testing devices mainly use offline sampling and laboratory testing, which has problems such as long measurement cycle, untimely data acquisition, and complex manual operation. In order to solve the problems of manual measurement, Liang Peng et al. proposed an intelligent drilling fluid monitoring system CN110593788A, which can realize online measurement of drilling fluid rheology; Weng Jing proposed an online drilling fluid detection system CN114705589, which can realize the detection of drilling fluid density and rheology. This system also designs a water washing function for some detection devices.

[0004] However, the above two systems and many existing online monitoring systems for drilling fluid performance have problems such as fewer measurement parameters, incomplete cleaning of pipelines and measuring devices, and low system operation efficiency.

[0005] Based on this, the utility model designs an online monitoring system for drilling fluid performance with an automatic cleaning function to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides an online monitoring system for drilling fluid performance with an automatic cleaning function.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] An online monitoring system for drilling fluid performance with automatic cleaning function, comprising a medium input and output module, an ion concentration measurement module and a rheology measurement module;

[0009] The medium input and output module includes a wastewater tank, a mud tank, a clean water tank, an electric diaphragm pump 1, an electric diaphragm pump 2, an air compressor, an electric three-way ball valve 1, an interface 1, an interface 2, an interface 3 and an electric three-way ball valve 2;

[0010] The ion concentration measurement module includes a dilution tank, an agitator, a peristaltic pump 1, a peristaltic pump 2, an ion measurement electrode, a built-in water tank, an electric three-way ball valve 6, an electric two-way ball valve 8 and an electric three-way ball valve 3;

[0011] The rheological measurement module comprises a rotational viscometer, a mass flowmeter, a first differential pressure measuring tube, a second differential pressure measuring tube, a fifth electric three-way ball valve, a back pressure valve, a seventh electric two-way ball valve and a fourth electric three-way ball valve.

[0012] Furthermore, electric three-way ball valve 1 is connected to one end of electric diaphragm pump 1, the waste water tank, and the mud tank, and the other end of electric diaphragm pump 1 is connected to electric three-way ball valve 2; electric diaphragm pump 2 is connected to the clean water tank, interface 1, interface 2, and interface 3.

[0013] Furthermore, the electric two-way ball valve eight is connected to the dilution tank and the wastewater tank, the peristaltic pump two is connected to the built-in water tank and the dilution tank, the agitator is installed on the dilution tank, the electric three-way ball valve six is ​​connected to the interface three, one end of the peristaltic pump one, and the dilution tank; an ion measuring electrode is installed on the dilution tank; the other end of the peristaltic pump one is connected to the electric three-way ball valve three.

[0014] Furthermore, differential pressure sensors are installed on the differential pressure measuring tube 1 and the differential pressure measuring tube 2, the rotational viscometer is connected to the electric two-way ball valve 7, the electric three-way ball valve 5, and the electric three-way ball valve 2, the electric three-way ball valve 4 is connected to the electric three-way ball valve 2, the interface 1, and one end of the mass flowmeter, the mass flowmeter, the differential pressure measuring tube 1, and the differential pressure measuring tube 2 are connected in series, the differential pressure measuring tube 2, the back pressure valve, and the electric three-way ball valve 3 are connected, the back pressure valve and the electric two-way ball valve 7 are both connected to the waste water tank; the other two ends of the electric three-way ball valve 5 are connected to the connecting pipe between the interface 2, the back pressure valve and the electric three-way ball valve 3.

[0015] Beneficial Effects

[0016] The utility model discloses an integrated drilling fluid performance monitoring device including the functions of drilling fluid extraction, drilling fluid performance parameter measurement, clean water flushing, air flushing, etc., which improves the system operation efficiency, optimizes the system robustness, and reduces the system error.

[0017] The drilling fluid performance parameter measurement in the utility model includes rheological measurement by a rotational viscometer, rheological measurement by a pipe pressure method, and ion concentration measurement, and these three modules are relatively independent. A single module can be operated according to the measurement instructions of the host computer, or the three modules can be operated simultaneously to improve the system operation efficiency.

[0018] The automatic cleaning function of the system in the utility model includes comprehensive water and air washing of the pipes through which the drilling fluid flows and the contact surfaces of the measuring equipment in contact with the drilling fluid, so as to prevent the drilling fluid from solidifying after adhering to the pipes and the sensor measuring points, causing system errors in the next measurement;

[0019] The utility model adopts a modular design system parameter detection function and equipment cleaning function, which effectively solves the problems of imperfect parameter measurement and cleaning functions of existing drilling fluid online monitoring equipment, poor system operation efficiency, poor system robustness, and increased system errors after multiple system operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a structural diagram of an online monitoring system for drilling fluid performance with automatic cleaning function according to the utility model;

[0022] Figure 2 The utility model is a Gantt device that runs in series during the measurement and cleaning process. Figure 1 ;

[0023] Figure 3 The utility model is a Gantt device that runs in parallel during the measurement and cleaning process. Figure 2 . DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model is further described below in conjunction with embodiments.

[0026] In some embodiments, please refer to the attached instructions. Figure 1 , an online monitoring system for drilling fluid performance with automatic cleaning function, including a medium input and output module, an ion concentration measurement module and a rheology measurement module;

[0027] The medium input and output module includes a wastewater tank, a mud tank, a clean water tank, an electric diaphragm pump 1, an electric diaphragm pump 2, an air compressor, an electric three-way ball valve 1, an interface 1, an interface 2, an interface 3 and an electric three-way ball valve 2; the electric three-way ball valve 1 is connected to one end of the electric diaphragm pump 1, the wastewater tank and the mud tank, and the other end of the electric diaphragm pump 1 is connected to the electric three-way ball valve 2; the electric diaphragm pump 2 is connected to the clean water tank, the interface 1, the interface 2 and the interface 3;

[0028] The ion concentration measurement module includes a dilution tank, an agitator, a peristaltic pump 1, a peristaltic pump 2, an ion measurement electrode, a built-in water tank, an electric three-way ball valve 6, an electric two-way ball valve 8 and an electric three-way ball valve 3; the electric two-way ball valve 8 is connected to the dilution tank and the wastewater tank, the peristaltic pump 2 is connected to the built-in water tank and the dilution tank, the agitator is installed on the dilution tank, the electric three-way ball valve 6 is connected to the interface 3, one end of the peristaltic pump 1, and the dilution tank; the ion measurement electrode is installed on the dilution tank; the other end of the peristaltic pump 1 is connected to the electric three-way ball valve 3;

[0029] The rheological measurement module includes a rotational viscometer, a mass flowmeter, a differential pressure measuring tube 1, a differential pressure measuring tube 2, an electric three-way ball valve 5, a back pressure valve, an electric two-way ball valve 7 and an electric three-way ball valve 4; the differential pressure measuring tube 1 and the differential pressure measuring tube 2 are both equipped with differential pressure sensors, the rotational viscometer is connected to the electric two-way ball valve 7, the electric three-way ball valve 5, and the electric three-way ball valve 2, the electric three-way ball valve 4 is connected to the electric three-way ball valve 2, the interface 1, and one end of the mass flowmeter, the mass flowmeter, the differential pressure measuring tube 1, and the differential pressure measuring tube 2 are connected in series, the differential pressure measuring tube 2 and the back pressure valve are connected to the electric three-way ball valve 3, the back pressure valve and the electric two-way ball valve 7 are both connected to the wastewater tank; the other two ends of the electric three-way ball valve 5 are connected to the connecting pipes between the interface 2, the back pressure valve and the electric three-way ball valve 3.

[0030] When the above-mentioned online monitoring system for drilling fluid performance with automatic cleaning function is used, the following steps are included:

[0031] Step 1: Turn on the system and perform a power-on self-test to ensure that all valves are reset, the electric diaphragm pumps (electric diaphragm pump 1, electric diaphragm pump 2) and the measuring modules (ion concentration measuring module, rheological measuring module) are in working condition, and confirm that the liquid levels of the clean water tank, mud tank, waste water tank and built-in water tank meet the requirements;

[0032] Step 2: After the system is ready, the electric three-way ball valve 1 is set to straight-through, and the electric diaphragm pump 1 pumps the drilling fluid from the mud tank to the rheological measurement module at the pumping rate specified by the control scheme;

[0033] Step 3, the electric three-way ball valve 2 is set to bypass, the electric two-way ball valve 7 is closed, the electric three-way ball valve 5 is bypassed, and the drilling fluid enters the rotational viscometer. After the cavity of the rotational viscometer is filled with drilling fluid, the electric three-way ball valve 2 is directly connected. At this time, the stepper motor of the rotational viscometer drives the rotor to rotate at a high speed, and the high-speed rotating rotor drives the drilling fluid in the cavity to rotate, thereby generating a high-speed shear rate on the stator and a torque on the stator. The torque of the stator is measured in real time by using a torque measurement sensor, and the measurement data is transmitted to the host computer to calculate the rheological parameters measured by the rotational viscometer;

[0034] Step 4: After the electric three-way ball valve 2 is straight-through, the electric three-way ball valve 3 is straight-through at this time, and the drilling fluid flows through the mass flow meter, the pressure difference measuring tube 1 and the pressure difference measuring tube 2. After the drilling fluid passes through the back pressure valve and the flow rate in the tube is stable, the pressure difference sensor starts to collect data, and transmits the collected flow, density, and pressure difference signals to the host computer, and calculates the rheological parameters under the tube pressure method. After comprehensive analysis of the rheological parameters measured by the rotational viscometer and the rheological parameters measured by the tube pressure method, more accurate drilling fluid rheological performance parameters are obtained;

[0035] Step 5: After the data collection in step 4 is completed, the electric three-way ball valve 3 becomes a bypass, the peristaltic pump 1 is operated, and 1 liter of drilling fluid is pumped into the dilution tank. At the same time, the peristaltic pump 2 is operated to extract clean water from the built-in water tank and pump 5 liters of clean water into the dilution tank. After the injection is completed, the peristaltic pump is turned off, the electric three-way ball valve 3 becomes a straight-through, and the agitator is turned on. After the drilling fluid is fully diluted, the agitator is turned off. After the ion measurement electrode responds for a period of time, the measured data is transmitted to the host computer to calculate the concentration of the specified ion in the drilling fluid;

[0036] Step 6. Repeat steps 2 to 5 according to the number of times each data needs to be collected set in the host computer until the measurement task is completed. The measurement process ends and the system performs an automatic cleaning process. After the cleaning is completed, each valve is reset to straight-through and the operator is reminded to handle the waste liquid. Then all equipment stops running and the host computer displays a standby state, waiting for the next start command.

[0037] Preferably, the three modules of rotational viscometer rheology measurement, tube pressure method rheology measurement, and ion concentration measurement are relatively independent. In addition to running the modules one by one in series according to steps 2 to 5, they can also run in parallel after the measurement conditions of each module are met to improve the system operation efficiency;

[0038] Preferably, the rheological measurement condition of the rotational viscometer is to ensure that after the drilling fluid fills the cavity of the rotational viscometer, the electric three-way ball valve 5 is closed and the electric three-way ball valve 2 is directly connected; the rheological measurement condition of the pipe pressure method is that the flow rate of the drilling fluid flowing through the mass flowmeter, the differential pressure measuring tube 1 and the differential pressure measuring tube 2 is stable; the ion concentration measurement condition is to inject one liter of drilling fluid and five liters of clean water into the dilution tank and stir them thoroughly.

[0039] Preferably, when the automatic cleaning process starts, the electric diaphragm pump 2 draws clean water from the clean water tank, and the clean water enters the drilling fluid online monitoring system from the interface 1, the interface 2, and the interface 3 respectively, and the pipes in the system and the contact surfaces of the measuring equipment that are in contact with the drilling fluid are washed with water in all aspects to prevent the drilling fluid from adhering to the pipes and the sensor measuring points and solidifying to cause system errors in the next measurement; after the water washing and cleaning is completed, the electric diaphragm pump 2 is turned off, and the air compressor is turned on to blow high-pressure airflow to the interface 1, the interface 2, and the interface 3, so that the airflow can take away the liquid remaining in the system; the specific steps are as follows:

[0040] S1. Cleaning process of the tube pressure method rheological measurement equipment: the electric three-way ball valve 4 is bypassed, the electric three-way ball valve 3 is directly connected, and other ball valves are closed (electric three-way ball valve 5, electric two-way ball valve 7, electric three-way ball valve 2, etc.). The clean water drawn by the electric diaphragm pump 2 enters the system from the interface 1, and enters the wastewater tank through the electric three-way ball valve 4, the mass flow meter, the pressure difference measuring tube 1, the pressure difference measuring tube 2, the electric three-way ball valve 3, the back pressure valve and the connecting pipe to complete the water washing of the tube pressure method rheological measurement equipment, and then the electric three-way ball valve 4 and the electric three-way ball valve 2 are directly connected to the electric three-way ball valve 1 to bypass, and the front section of the pipeline is cleaned with clean water; the electric diaphragm pump 2 is closed, and the air compressor is turned on to let the high-pressure air enter the system from the interface 1 to take away the residual liquid in the tube pressure method rheological measurement equipment and the residual liquid in the front section of the pipeline;

[0041] S2, cleaning process of the rotational viscometer: the electric three-way ball valve 5 is bypassed, the electric two-way ball valve 7 is opened, and other valves (electric three-way ball valve 3, electric three-way ball valve 4, electric three-way ball valve 2, etc.) are closed. The clean water drawn by the electric diaphragm pump 2 enters the system from the interface 2, and enters the wastewater tank through the rotational viscometer, the electric two-way ball valve 7 and the connecting pipe. The water washing of the rotational viscometer is completed. The electric diaphragm pump 2 is closed, and the air compressor is turned on to allow high-pressure air to enter the system from the interface 2 to take away the residual liquid in the rotational viscometer and the connecting pipe.

[0042] S3, dilution tank cleaning process: the left side of the electric three-way ball valve 6 is bypassed and the electric two-way ball valve 8 is opened. The clean water drawn by the electric diaphragm pump 2 enters the system from the interface 3, and enters the wastewater tank through the electric three-way ball valve 6, the dilution tank, the electric two-way ball valve 8 and the connecting pipe. At the same time, the stirring motor is started after the brush head is replaced to complete the water washing of the dilution tank. Then the right side of the electric three-way ball valve 6 is bypassed, the electric three-way ball valve 3 is bypassed, and the other ball valves are closed (electric three-way ball valve 5, electric two-way ball valve 7, etc.). The clean water passes through the electric three-way ball valve, the peristaltic pump 1, the electric three-way ball valve 3, the back pressure valve and the connecting pipe to enter the wastewater tank to complete the water washing of the peristaltic pump 1; then the electric diaphragm pump 2 is closed, and the air compressor is turned on to perform air flushing on the residual liquid in the dilution tank, the peristaltic pump 1 and the connecting pipe through the interface 3.

[0043] Preferably, the cleaning process of the tube pressure rheology measurement equipment in S1, the cleaning process of the rotational viscometer in S2, and the cleaning process of the dilution tank in S3, these three cleaning modules are highly independent, and other parameters can be measured while performing cleaning. According to the actual on-site requirements for multiple measurement accuracy of a certain device, the cleaning process of the device can be inserted into the measurement process to achieve consistency in the multiple measurement data of the device and reduce system errors.

[0044] Preferably, Figure 2 , 3 As shown, the system running processes O, A1, A2, A3, S1, S2, and S3 respectively represent power-on self-test, rotational viscometer rheological measurement, tube pressure method rheological measurement, ion concentration measurement, rotational viscometer cleaning, tube pressure method rheological measurement device cleaning, and ion concentration measurement device cleaning; turn on the system, set each parameter on the host computer to collect a set of data, the system first uses each measurement and cleaning process to run in series, and then restart the equipment, also collect a set of data for each parameter, and clean the system in an all-round way. The difference is that the process uses concurrent operation, and finally through Figure 2-3 The depicted time-process Gantt chart clearly shows that the modules of this online monitoring system for drilling fluid performance with automatic cleaning function are designed relatively independently, and the efficiency of system measurement and cleaning can be greatly improved through control.

[0045] The utility model discloses an integrated drilling fluid performance monitoring device including the functions of drilling fluid extraction, drilling fluid performance parameter measurement, clean water flushing, air flushing, etc., which improves the system operation efficiency, optimizes the system robustness, and reduces the system error.

[0046] The drilling fluid performance parameter measurement in the utility model includes rheological measurement by a rotational viscometer, rheological measurement by a pipe pressure method, and ion concentration measurement, and these three modules are relatively independent. A single module can be operated according to the measurement instructions of the host computer, or the three modules can be operated simultaneously to improve the system operation efficiency.

[0047] The automatic cleaning function of the system in the utility model includes comprehensive water and air washing of the pipes through which the drilling fluid flows and the contact surfaces of the measuring equipment in contact with the drilling fluid, so as to prevent the drilling fluid from solidifying after adhering to the pipes and the sensor measuring points, causing system errors in the next measurement;

[0048] The utility model adopts a modular design system parameter detection function and equipment cleaning function, which effectively solves the problems of imperfect parameter measurement and cleaning functions of existing drilling fluid online monitoring equipment, poor system operation efficiency, poor system robustness, and increased system errors after multiple system operations.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An online monitoring system for drilling fluid performance with automatic cleaning function, characterized in that: It includes a medium input and output module, an ion concentration measurement module and a rheology measurement module; The medium input and output module includes a wastewater tank, a mud tank, a clean water tank, an electric diaphragm pump 1, an electric diaphragm pump 2, an air compressor, an electric three-way ball valve 1, an interface 1, an interface 2, an interface 3 and an electric three-way ball valve 2; The ion concentration measurement module includes a dilution tank, an agitator, a peristaltic pump 1, a peristaltic pump 2, an ion measurement electrode, a built-in water tank, an electric three-way ball valve 6, an electric two-way ball valve 8 and an electric three-way ball valve 3; The rheological measurement module comprises a rotational viscometer, a mass flowmeter, a first differential pressure measuring tube, a second differential pressure measuring tube, a fifth electric three-way ball valve, a back pressure valve, a seventh electric two-way ball valve and a fourth electric three-way ball valve.

2. The drilling fluid performance online monitoring system with automatic cleaning function according to claim 1 is characterized in that: Electric three-way ball valve one is connected to one end of electric diaphragm pump one, the waste water tank and the mud tank, and the other end of electric diaphragm pump one is connected to electric three-way ball valve two; electric diaphragm pump two is connected to the clean water tank, interface one, interface two and interface three.

3. The drilling fluid performance online monitoring system with automatic cleaning function according to claim 2 is characterized in that: The electric two-way ball valve eight is connected to the dilution tank and the wastewater tank, the peristaltic pump two is connected to the built-in water tank and the dilution tank, the electric three-way ball valve six is ​​connected to the interface three, one end of the peristaltic pump one, and the dilution tank; the dilution tank is equipped with an ion measuring electrode; the other end of the peristaltic pump one is connected to the electric three-way ball valve three.

4. The drilling fluid performance online monitoring system with automatic cleaning function according to claim 3 is characterized in that: The agitator is installed on the dilution tank.

5. The drilling fluid performance online monitoring system with automatic cleaning function according to claim 4 is characterized in that: The rotational viscometer is connected to electric two-way ball valve seven, electric three-way ball valve five, and electric three-way ball valve two. Electric three-way ball valve four is connected to electric three-way ball valve two, interface one, and one end of the mass flowmeter. The mass flowmeter, differential pressure measuring tube one, and differential pressure measuring tube two are connected in series. The differential pressure measuring tube two and the back pressure valve are connected to electric three-way ball valve three. The other two ends of the electric three-way ball valve five are connected to the connecting pipe between interface two, the back pressure valve and the electric three-way ball valve three.

6. The drilling fluid performance online monitoring system with automatic cleaning function according to claim 5 is characterized in that: Differential pressure sensors are installed on the differential pressure measuring tube 1 and the differential pressure measuring tube 2.

7. The drilling fluid performance online monitoring system with automatic cleaning function according to claim 6 is characterized in that: The back pressure valve and the electric two-way ball valve are both connected to the waste water tank.

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