CN220772854U

CN220772854U - Device for on-line monitoring of slurry density of petroleum drilling fluid

Info

Publication number: CN220772854U
Application number: CN202322398207.6U
Authority: CN
Inventors: 杨春军; 魏川鸿
Original assignee: Sichuan Weitai Kechuang Petroleum Equipment Manufacturing Co ltd
Current assignee: Sichuan Weitai Kechuang Petroleum Equipment Manufacturing Co ltd
Priority date: 2023-08-29
Filing date: 2023-09-04
Publication date: 2024-04-12
Anticipated expiration: 2033-09-04

Abstract

The utility model discloses a device for on-line monitoring of the mud density of petroleum drilling fluid, which is used for monitoring the mud density of drilling fluid in an aboveground drilling fluid mud tank or a drilling fluid mud tank in real time, and comprises the following components: the system comprises a liquid pump, a densimeter, a motor controller, a signal acquisition and control terminal, a computer and a circulating pipeline; the circulating pipeline is provided with a liquid pumping pump, the densimeter is vertically arranged in the circulating pipeline, the circulating pipeline is used for being connected with a drilling fluid slurry tank or a drilling fluid slurry tank, the circulating pipeline is provided with a first connecting branch pipe, the first connecting branch pipe is provided with a first pump body and a first hydraulic control one-way valve, the liquid pumping pump is used for pumping drilling fluid slurry in the drilling fluid slurry tank or the drilling fluid slurry tank into the circulating pipeline and detecting the density of the drilling fluid slurry in the circulating pipeline by matching with the densimeter, and the first connecting branch pipe is matched with the first pump body and the first hydraulic control one-way valve to pump the drilling fluid slurry in the circulating pipeline outwards.

Description

Device for on-line monitoring of slurry density of petroleum drilling fluid

Technical Field

The utility model relates to the technical field of well engineering, in particular to a device for on-line monitoring of slurry density of petroleum drilling fluid.

Background

Drilling fluid density, which is the density of the fluid used in the drilling process, is typically expressed in specific gravity or weight units. Measurement of drilling fluid density plays a key role in controlling drilling operations, preventing blowouts, protecting formations, determining the position of a drill bit in a well, and the like.

In the prior art, a drilling fluid liquid densimeter (proportion balance) is generally used for measurement, the working principle is a lever balance principle, the measurement is influenced by the mineralization degree of the slurry, correction and leveling are often needed, the measurement is time-consuming, the measurement adopts a manual toggle balance code for reading, the measurement is greatly influenced by the outside and human factors, a drilling fluid density measuring device in the prior art is generally highly bundled with drilling platform equipment, the equipment independence is not provided, the maintenance is difficult, the acquired data are generally underground data, and the reference meaning of the drilling fluid allocation process of an underground water tank is small.

Disclosure of Invention

The utility model provides a device for on-line monitoring of the mud density of petroleum drilling fluid, which is used for monitoring the mud density of drilling fluid in an uphole drilling fluid mud tank or a drilling fluid mud tank in real time.

The application provides an oil drilling fluid mud density on-line monitoring's device, include: the system comprises a liquid pump, a densimeter, a motor controller, a signal acquisition and control terminal, a computer and a circulating pipeline;

the computer with signal acquisition and control terminal is connected, signal acquisition and control terminal with motor controller with the densimeter is connected, motor controller with the drawing liquid pump is connected, install on the circulation pipeline the drawing liquid pump, the densimeter is installed perpendicularly in the circulation pipeline, the circulation pipeline is used for being connected with drilling fluid mud pond or drilling fluid mud jar, be provided with first connecting branch on the circulation pipeline, first connecting branch is located drawing liquid pump with the densimeter, install first pump body and first hydraulically controlled check valve on the first connecting branch, the drawing liquid pump is used for with drilling fluid mud pond or in the drilling fluid mud jar is taken out to in the circulation pipeline to cooperate the densimeter detects the density of drilling fluid mud in the circulation pipeline, first connecting branch cooperates the first pump body with first hydraulically controlled check valve is used for outwards pumping the drilling fluid mud in the circulation pipeline.

Optionally, the circulation pipeline is further provided with a second connecting branch pipe, the second connecting branch pipe is arranged at one end of the circulation pipeline far away from the first connecting branch pipe, a second pump body and a second hydraulic control one-way valve are arranged on the second connecting branch pipe, the second connecting branch pipe is used for being connected with an external cleaning liquid tank, and the second connecting branch pipe is matched with the second pump body and the second hydraulic control one-way valve and is used for pumping cleaning liquid in the cleaning liquid tank into the circulation pipeline and discharging the cleaning liquid through the first connecting branch pipe.

Optionally, a gas separation component is further installed on the circulation pipeline, the gas separation component is arranged between the densimeter and the liquid pump, and the gas separation component is used for separating and discharging gas in drilling fluid slurry in the circulation pipeline.

Optionally, the gas separation part includes feed liquor ring flange, goes out liquid ring flange and separation chamber, the gas separation part pass through the feed liquor ring flange with go out liquid ring flange with circulation line connects, the separation chamber sets up the feed liquor ring flange with go out between the liquid ring flange, the upper portion of separation chamber still is provided with the discharge channel, be provided with the check valve in the discharge channel.

Optionally, a flow sensor is installed at the outlet of the liquid pump, and the flow sensor is connected with the signal acquisition and control terminal.

Optionally, the motor controller and the signal acquisition and control terminal are both installed in an explosion-proof box.

Optionally, the device further comprises an alarm, wherein the alarm is connected with the signal acquisition and control terminal and is used for high-voltage or high-density alarm.

Optionally, the liquid pump is a screw pump.

Optionally, the signal acquisition and control terminal is connected with the densimeter by adopting RS485 communication, and the signal acquisition and control terminal realizes data communication with the computer through wired or wireless modbusTCP/IP communication.

Optionally, the operating voltage of the device is AC380V,50Hz.

From the above technical scheme, the utility model has the following advantages:

the integrated circulating system is formed by the liquid pump and the circulating pipeline, the densimeter is arranged in the circulating pipeline and connected with the signal acquisition and control terminal, and the signal acquisition and control terminal is connected with the computer, so that the density of drilling fluid slurry in the drilling fluid slurry tank or the drilling fluid slurry tank can be monitored in real time. The device can independently form a system, can monitor the density of drilling fluid slurry in real time without assistance of an auxiliary environment, and can improve the density measurement precision. The device has still adopted the anti-blocking design, through set up first connecting branch pipe, first pump body and first hydraulically controlled check valve on the circulation pipeline, first pump body and first hydraulically controlled check valve open when the device is out of service to can in time carry out the pulp discharging and handle, prevent that the circulation pipeline from blockking up, reduced equipment operation maintenance cost greatly.

Drawings

FIG. 1 is a schematic diagram of a device for on-line monitoring of slurry density of petroleum drilling fluid;

fig. 2 is a schematic diagram of another structure of the device for on-line monitoring of slurry density of petroleum drilling fluid provided by the utility model.

Detailed Description

In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely used to illustrate the relative positional relationships between the components or portions, and do not particularly limit the specific mounting orientations of the components or portions.

Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "configured," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

Furthermore, the structures, proportions, sizes, etc. shown in the drawings herein are shown and described in detail for purposes of illustration only, and are not intended to limit the scope of the utility model, which is defined in the claims, unless otherwise indicated, and which are otherwise used by those skilled in the art to which the utility model pertains.

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The utility model discloses a device for on-line monitoring of the mud density of petroleum drilling fluid, which is used for monitoring the mud density of drilling fluid in an aboveground drilling fluid mud tank or a drilling fluid mud tank in real time. The following detailed description will be given with reference to the accompanying drawings.

Referring to fig. 1 to 2, an embodiment of an apparatus for on-line monitoring of slurry density of petroleum drilling fluid provided in the present application includes:

the system comprises a liquid pump 1, a densimeter 2, a motor controller 3, a signal acquisition and control terminal 4, a computer 5 and a circulating pipeline 6;

the computer 5 is connected with the signal acquisition and control terminal 4, the signal acquisition and control terminal 4 is connected with the motor controller 3 and the densimeter 2, the motor controller 3 is connected with the liquid pump 1, install the liquid pump 1 on the circulation pipeline 6, the densimeter 2 is installed perpendicularly in the circulation pipeline 6, the circulation pipeline 6 is used for being connected with drilling fluid mud pond or drilling fluid mud jar, be provided with first connecting branch pipe 7 on the circulation pipeline 6, first connecting branch pipe 7 is located between liquid pump 1 and the densimeter 2, install first pump body and first hydraulically controlled check valve on the first connecting branch pipe 7, liquid pump 1 is used for taking out the drilling fluid mud in drilling fluid mud pond or the drilling fluid mud jar to the circulation pipeline 6, and cooperate density of drilling fluid mud in the detection circulation pipeline 6 of densimeter 2, first connecting branch pipe 7 cooperates first pump body and first hydraulically controlled check valve and is used for outwards pumping the drilling fluid mud in the circulation pipeline 6.

Liquid drilling fluids often mix solid particles (drill cuttings) with chemical additives to form a slurry-like liquid, which is known as drilling fluid mud. The drilling fluid slurry not only can help suspend solid matters in the drilling process, but also can perform the functions of cooling and lubricating a drill bit, stabilizing a well wall, suspending and conveying drilling cuttings, balancing well pressure, preventing the well wall from collapsing and the like. The drilling fluid in the uphole mud tank or mud pit has the characteristics of more bubbles, large viscosity and more particles, and the common density measurement method has low precision and is easy to damage. In the embodiment, the device consists of a liquid pump 1, a densimeter 2, a motor controller 3, a signal acquisition and control terminal 4, a computer 5 and a circulating pipeline 6. The pump 1 is responsible for sampling the drilling fluid slurry from a drilling fluid slurry tank or tank, pumping the drilling fluid slurry into a circulation line 6, and the circulation line 6 is vertically provided with a densitometer 2, by which densitometer 2 the density of the drilling fluid slurry can be measured. The liquid pump 1 is connected with the motor controller 3, and the start-stop and the running speed of the liquid pump 1 are controlled by the motor controller 3, and the motor controller 3 is also responsible for adjusting the working state of the motor so as to meet the liquid pumping requirement, and the motor controller 3 has the functions of short-circuit protection, overcurrent protection, phase-failure protection and the like. The motor controller 3 is connected with the signal acquisition and control terminal 4 to realize the transmission of control command and the acquisition of state data, and the signal acquisition and control terminal 4 can monitor the state of the motor, control the operation of the motor and record the working condition of the motor. The densimeter 2 and the signal acquisition and control terminal 4 are connected to realize transmission and monitoring of drilling fluid slurry density data, the signal acquisition and control terminal 4 can periodically or in real time read data obtained by measurement of the densimeter 2 and report the data to the computer 5 to form a data report, and after the data report is generated, the data report can be matched with a drilling fluid formula to further form a real-time drilling fluid batching process scheme, so that manual batching cost is reduced.

Further, the device has still adopted the anti-blocking design, specifically still be provided with first connecting branch pipe 7 on circulation pipeline 6, and install the first pump body and the first hydraulically controlled check valve on first connecting branch pipe 7, first pump body and the outside pump-out of the drilling fluid mud in the circulation pipeline 6 of first hydraulically controlled check valve cooperation responsibility, thereby make the device can carry out the mud discharging to the drilling fluid mud in the circulation pipeline 6 when needing and handle, solve the slurry blocking problem that probably appears in the equipment operation in-process from this, and reduce the maintenance demand of equipment. Specifically, the slurry discharging process can be performed once when the device is deactivated each time, so that the device can start working in an optimal state when being started next time, and the performance and the reliability of the device are effectively maintained.

In the embodiment, an integrated circulation system is formed by the liquid pump 1 and the circulation pipeline 6, the densimeter 2 is arranged in the circulation pipeline 6, the densimeter 2 is connected with the signal acquisition and control terminal 4, and the signal acquisition and control terminal 4 is connected with the computer 5, so that the density of drilling fluid slurry in the drilling fluid slurry tank or the drilling fluid slurry tank can be monitored in real time. The device can independently form a system, can monitor the density of drilling fluid slurry in real time without assistance of an auxiliary environment, and can improve the density measurement precision. The device has still adopted the anti-blocking design, through set up first connecting branch pipe 7, first pump body and first hydraulically controlled check valve on circulation pipeline 6, first pump body and first hydraulically controlled check valve open when the device is out of service to can carry out the pulp discharging in time and handle, prevent circulation pipeline 6 jam, reduced equipment operation maintenance cost greatly.

Optionally, the circulation pipeline 6 is further provided with a second connecting branch pipe 8, the second connecting branch pipe 8 is arranged at one end of the circulation pipeline 6 far away from the first connecting branch pipe 7, the second connecting branch pipe 8 is provided with a second pump body and a second hydraulic control one-way valve, the second connecting branch pipe 8 is used for being connected with an external cleaning liquid tank, and the second connecting branch pipe 8 is matched with the second pump body and the second hydraulic control one-way valve to pump cleaning liquid in the cleaning liquid tank into the circulation pipeline 6 and discharge the cleaning liquid through the first connecting branch pipe 7.

In this embodiment, an automatic cleaning means is further added to clean the circulation line 6. Specifically, the circulation line 6 is further provided with a second connection branch pipe 8, and the second connection branch pipe 8 is used for being connected to an external cleaning solution tank so as to realize the introduction of the cleaning solution. The second pump body and the second hydraulic control one-way valve which are arranged on the second connecting branch pipe 8 are matched to pump cleaning liquid into the circulating pipeline 6 from the external cleaning liquid tank, the first hydraulic control one-way valve is opened to enable the cleaning liquid to be discharged through the first connecting branch pipe 7, the second connecting branch pipe 8 is arranged on the circulating pipeline 6 at one end far away from the first connecting branch pipe 7, therefore impurities, residues and sediments in the circulating pipeline 6 are cleaned, all components in the circulating pipeline 6 are cleaned, the operation efficiency and the operation precision of the device are further ensured, and the maintenance frequency of the device is reduced. It should be noted that the composition and amount of the cleaning fluid is compatible with the characteristics of the desired drilling fluid mud, and ensures that the introduction of the cleaning fluid does not affect the quality and measurement of the drilling fluid mud, and that the cleaning should be performed after the device is deactivated and the mud discharge process is completed.

Optionally, a gas separation component 9 is further installed on the circulation pipeline 6, the gas separation component 9 is disposed between the densitometer 2 and the liquid pump 1, and the gas separation component 9 is used for separating and discharging gas in drilling fluid slurry in the circulation pipeline 6.

In this embodiment, a gas separation unit 9 is further installed on the circulation line 6, and the gas separation unit 9 is disposed between the densitometer 2 and the fluid pump 1 to separate and discharge the gas inside before the drilling fluid mud passes through the densitometer 2. By separating and exhausting the gas, the device can more accurately measure the density of drilling fluid slurry and maintain the fluid fluidity in the circulating pipeline 6, thereby improving the performance of the device and the reliability of measurement.

Optionally, the gas separation part 9 includes inlet flange, play liquid ring flange and separation chamber, and gas separation part 9 is connected with circulation pipeline 6 through inlet flange and play liquid ring flange, and the separation chamber sets up between inlet flange and play liquid ring flange, and the upper portion of separation chamber still is provided with the discharge channel, is provided with the check valve in the discharge channel.

In this embodiment, the gas separation part 9 is specifically a pipe-type gas separator, and includes a liquid inlet flange, a liquid outlet flange, and a separation chamber, where the liquid inlet flange and the liquid outlet flange are used to connect the whole gas separation part 9 and the circulation pipe 6, and ensure tightness and stability, and prevent leakage. The separation chamber is located between the liquid inlet flange and the liquid outlet flange, and can separate the gas before the liquid flows through the liquid outlet flange, and the separation chamber is designed to enable the gas to float upwards in enough space without entering the liquid again for flowing. The upper part of the separation chamber is provided with a discharge passage, and the separated gas can be ensured to be effectively discharged to the external environment through a check valve in the discharge passage without re-entering the circulation pipeline to flow, so that the separation effect is maintained.

Optionally, a flow sensor is installed at the outlet of the liquid pump 1, and the flow sensor is connected with the signal acquisition and control terminal 4.

In this embodiment, a flow sensor is further installed at the outlet of the liquid pump 1, and the flow sensor can monitor the flow of drilling fluid slurry in the circulation pipeline 6 in real time, so as to help determine the working condition of the device, the pumping rate of the drilling fluid slurry and the fluidity of the drilling fluid slurry in the pipeline, further determine whether the device has abnormal conditions (such as blockage or leakage), and adjust the running condition of the device in time. The connection between the flow sensor and the signal acquisition and control terminal 4 is established, so that flow data can be acquired, transmitted and recorded, and the signal acquisition and control terminal 4 can read the data of the flow sensor in real time or periodically for data recording and subsequent analysis, thereby helping to optimize the working performance of the whole device.

Optionally, the motor controller 3 and the signal acquisition and control terminal 4 are both installed in an explosion-proof box.

Because flammable gas exists in the drilling site and belongs to a dangerous environment, in the embodiment, the motor controller 3, the signal acquisition and control terminal 4 and accessory components thereof are all arranged in the explosion-proof box, so that electrical equipment is prevented from causing fire or explosion. The design and the installation of the explosion-proof box are required to meet corresponding explosion-proof standards so as to ensure the compliance and the safety of the device in dangerous environments, ensure that the device can still work normally in severe environments and improve the reliability and the safety of the device.

Optionally, the device further comprises an alarm, wherein the alarm is connected with the signal acquisition and control terminal 4 and is used for high-voltage or high-density alarm.

In this embodiment, the alarm is used to alarm under high pressure or high density conditions, which may mean that the operating condition of the device is abnormal, and measures need to be taken to avoid damage to the device, safety risks or error accumulation. The alarm is connected with the signal acquisition and control terminal 4, and once the signal acquisition and control terminal 4 detects a high-pressure or high-density condition, that is, the current pressure or density measured value is greater than a preset safety threshold, a corresponding alarm signal can be sent through the alarm, and the alarm can send out an alarm through sound, brightness or other modes so as to attract the attention of operators, thereby protecting the safety of equipment and personnel.

Alternatively, the liquid pump 1 is a screw pump.

In this embodiment, the liquid pump 1 is specifically a screw pump, which belongs to an adjustable speed pump, and the screw pump uses the rotation motion of a screw to convey liquid from the suction end to the discharge end of the pump, and the flow rate and pressure of the liquid can be controlled by adjusting the rotation speed of the pump. Screw pumps are particularly useful in applications requiring stable flow rates and relatively high pressures, and can provide accurate fluid supply in applications where drilling fluid mud density is measured, helping to maintain accuracy and stability of the measurement.

Optionally, the signal acquisition and control terminal 4 is connected with the densimeter 2 by adopting RS485 communication, and the signal acquisition and control terminal 4 realizes data communication with the computer 5 through wired or wireless modbusTCP/IP communication.

Alternatively, the operating voltage of the device is AC380V,50Hz.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An apparatus for on-line monitoring of slurry density of petroleum drilling fluid, comprising: the system comprises a liquid pump, a densimeter, a motor controller, a signal acquisition and control terminal, a computer and a circulating pipeline;

2. The device according to claim 1, wherein the circulation pipeline is further provided with a second connecting branch pipe, the second connecting branch pipe is arranged at one end of the circulation pipeline far away from the first connecting branch pipe, a second pump body and a second hydraulic control one-way valve are arranged on the second connecting branch pipe, the second connecting branch pipe is used for being connected with an external cleaning liquid tank, and the second connecting branch pipe is matched with the second pump body and the second hydraulic control one-way valve and used for pumping cleaning liquid in the cleaning liquid tank into the circulation pipeline and discharging the cleaning liquid through the first connecting branch pipe.

3. The apparatus of claim 1, wherein the circulation line further comprises a gas separation element disposed between the densitometer and the fluid pump, the gas separation element configured to separate and vent gas from the drilling fluid slurry in the circulation line.

4. A device according to claim 3, wherein the gas separation element comprises a liquid inlet flange, a liquid outlet flange and a separation chamber, the gas separation element is connected with the circulation pipeline through the liquid inlet flange and the liquid outlet flange, the separation chamber is arranged between the liquid inlet flange and the liquid outlet flange, a discharge channel is further arranged at the upper part of the separation chamber, and a check valve is arranged in the discharge channel.

5. The device according to claim 1, wherein a flow sensor is installed at the outlet of the pump, and the flow sensor is connected with the signal acquisition and control terminal.

6. The apparatus of claim 1, wherein the motor controller and the signal acquisition and control terminal are both mounted within an explosion proof enclosure.

7. The device of claim 1, further comprising an alarm connected to the signal acquisition and control terminal, the alarm being configured to alarm at high pressure or high density.

8. The device of claim 1, wherein the fluid pump is a progressive cavity pump.

9. The device according to any one of claims 1 to 8, wherein the signal acquisition and control terminal is in RS485 communication connection with the densitometer, and the signal acquisition and control terminal is in data communication with the computer through wired or wireless modbusTCP/IP communication.

10. The device according to any one of claims 1 to 8, characterized in that the operating voltage AC380V,50Hz of the device.