CN217212102U - High-precision drilling fluid rheological property online detection device - Google Patents
High-precision drilling fluid rheological property online detection device Download PDFInfo
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- CN217212102U CN217212102U CN202122726587.2U CN202122726587U CN217212102U CN 217212102 U CN217212102 U CN 217212102U CN 202122726587 U CN202122726587 U CN 202122726587U CN 217212102 U CN217212102 U CN 217212102U
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Abstract
The utility model provides a high accuracy drilling fluid rheology on-line measuring device, including detection pipeline, screw pump, pulsation damper, drive assembly, back pressure valve and detection component, the detection pipeline includes the first, second and third pipeline that connect gradually, and the pipe diameter of third pipeline is greater than the second pipeline; the screw pump is arranged at the inlet of the first pipeline, the pulsation damper is arranged at the outlet of the screw pump, and the back pressure valve is arranged at the outlet of the third pipeline; the detection assembly comprises a pressure sensor and a coriolis flowmeter which are arranged on a first pipeline, a first differential pressure sensor which is arranged on a second pipeline and a second differential pressure sensor which is arranged on a third pipeline. The mud shear force of the drilling fluid under high shear rate and low shear rate is detected through the first differential pressure sensor and the second differential pressure sensor respectively, the pressure sensor detects the total pressure, the pulsation damper relieves the pressure pulsation of the pipeline, the back pressure valve increases the pipeline pressure, bubbles in the pipeline are eliminated, and therefore detection errors are reduced, and detection precision is improved.
Description
Technical Field
The utility model relates to a drilling fluid detects technical field, especially relates to a high accuracy drilling fluid rheology on-line measuring device.
Background
The rheological properties of drilling fluids are critical to the determination of drilling: calculating friction pressure loss in the pipeline and the annular space, determining equivalent circulating density under the underground condition, determining main flow states in the pipeline and the annular space, estimating hole cleaning efficiency, estimating exciting and pumping pressure, and performing water conservation optimization to improve drilling efficiency. The rheological property of the drilling fluid is detected on line with high precision, the drilling conditions can be accurately controlled in real time, and the drilling efficiency is improved.
During drilling, the properties of the drilling fluid change during drilling due to the formation cuttings and other substances entering the mud. The existing online rotary viscometer detection method is easily blocked by solid phase in mud, and a pipeline type drilling fluid rheological property detection pipeline in the prior art is influenced by pressure pulsation, bubbles and a pressure tapping hole, so that the measurement error is large.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a high accuracy drilling fluid rheology on-line measuring device aims at improving drilling fluid on-line measuring's precision.
An embodiment of the utility model provides a high accuracy drilling fluid rheology on-line measuring device, include:
the device comprises a detection pipeline, a detection device and a control device, wherein the detection pipeline comprises a first pipeline, a second pipeline and a third pipeline which are sequentially connected, and the pipe diameter of the third pipeline is larger than that of the second pipeline and is used for allowing drilling fluid to be detected to flow;
the screw pump is connected to the inlet of the first pipeline and used for inputting the drilling fluid into the first pipeline;
the pulsation damper is arranged at the outlet of the screw pump;
the driving assembly is used for driving the screw pump to rotate;
the backpressure valve is arranged at the outlet of the third pipeline; and (c) a second step of,
and the detection assembly comprises a pressure sensor and a coriolis flowmeter which are arranged on the first pipeline, a first differential pressure sensor arranged on the second pipeline and a second differential pressure sensor arranged on the third pipeline.
Optionally, the device further comprises a data acquisition module and a computer, wherein the data acquisition module is in communication connection with the detection assembly and the computer to acquire detection data detected by the detection assembly and transmit the detection data to the computer, and the computer is connected with the driving assembly to control the driving assembly.
Optionally, the driving assembly comprises a variable frequency motor and a frequency converter, the variable frequency motor is connected with the screw pump, and the frequency converter is connected with the variable frequency motor.
Optionally, the pipe diameters of the first pipeline and the second pipeline are in the range of 5mm-20mm, and the pipe diameter of the third pipeline is in the range of 25mm-60 mm.
Optionally, the lengths of the first, second and third pipelines are all in the range of 1m-6 m.
Optionally, the first pipeline and the second pipeline, and the second pipeline and the third pipeline are all connected by U-shaped pipes, so that the first pipeline, the second pipeline and the third pipeline are arranged in parallel.
Optionally, pressure taps for installing the first differential pressure sensor or the second differential pressure sensor are respectively formed on the second pipeline and the third pipeline, and the ratio of the opening depth of each pressure tap to the opening diameter is between 0.1 and 10.
Optionally, the screw pump is connected to the first pipeline through a flange, the first pipeline is connected to the coriolis flowmeter through a thread, the second pipeline is connected to the third pipeline through a thread, the pressure sensor is connected to the first pipeline through a thread, and the first differential pressure sensor and the second differential pressure sensor are both mounted on the second pipeline and the third pipeline through flanges, respectively.
Optionally, the span ranges of the two probes on the first differential pressure sensor and the second differential pressure sensor are between 0.5m and 5m, and the distances between the two probes and the connecting joint between the front pipeline and the rear pipeline are between 0.2m and 1 m.
The embodiment of the utility model provides a beneficial effect that technical scheme brought is: the utility model discloses a high accuracy drilling fluid rheology on-line measuring device is through setting up the different second pipeline of pipe diameter and third pipeline, and the pipe diameter of third pipeline is greater than the second pipeline, can make the drilling fluid pass through the second pipeline of little pipe diameter earlier from this, the third pipeline through big pipe diameter again, can change the speed of drilling fluid flow in-process, thereby install on the second pipeline through first differential pressure sensor and can detect the mud shear force of drilling fluid under high shear rate, second differential pressure sensor installs and can detect the mud shear force of drilling fluid under low shear rate on the third pipeline. The pulsation damper is arranged at the outlet of the screw pump, so that the pressure pulsation of a pipeline can be reduced, and the measurement precision is improved; the pressure sensor is arranged on the first pipeline, so that the total pressure in the pipeline system can be detected, the pipeline pressure in the detection pipeline can be increased by arranging the backpressure valve at the outlet of the third pipeline, bubbles in the detection pipeline are eliminated, the detection error is reduced, and the detection precision is improved.
Drawings
Fig. 1 is a schematic diagram of an embodiment of the online detection device for the rheological property of the high-precision drilling fluid provided by the present invention;
fig. 2 is an enlarged schematic view of the location of the pressure taps in fig. 1.
In the figure: the device comprises a high-precision drilling fluid rheological property online detection device 100, a detection pipeline 1, a first pipeline 11, a second pipeline 12, a third pipeline 13, a U-shaped pipe 14, a pressure measuring hole 15, a screw pump 2, a pulsation damper 3, a driving assembly 4, a variable frequency motor 41, a frequency converter 42, a back pressure valve 5, a detection assembly 6, a pressure sensor 61, a scientific flowmeter 62, a first differential pressure sensor 63, a second differential pressure sensor 64, a data acquisition module 7, a computer 8 and a flange 9.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be further described below with reference to the accompanying drawings.
Referring to fig. 1 to 2, the utility model provides a high accuracy drilling fluid rheology on-line measuring device 100, including detection pipeline 1, screw pump 2, pulsation damper 3, drive assembly 4, back pressure valve 5 and detection assembly 6, detection pipeline 1 includes first pipeline 11, second pipeline 12 and third pipeline 13 that connect gradually, the pipe diameter of third pipeline 13 is greater than the pipe diameter of second pipeline 12 for the drilling fluid that detects flows; the screw pump 2 is connected to an inlet of the first pipeline 11 and is used for inputting the drilling fluid into the first pipeline 11; the pulsation damper 3 is arranged at the outlet of the screw pump 2; the driving assembly 4 is used for driving the screw pump 2 to rotate; a back pressure valve 5 is mounted at the outlet of the third line 13; the detection assembly 6 comprises a pressure sensor 61 and a coriolis flowmeter 62 mounted on said first pipe 11, a first differential pressure sensor 63 mounted on said second pipe 12 and a second differential pressure sensor 64 mounted on said third pipe 13.
Through setting up second pipeline 12 and third pipeline 13 that the pipe diameter is different, and the pipe diameter of third pipeline 13 is greater than second pipeline 12, can make drilling fluid pass through the second pipeline 12 of little pipe diameter earlier from this, and then through the third pipeline 13 of big pipe diameter, can change the speed that drilling fluid flows the in-process, thereby install on second pipeline 12 through first differential pressure sensor 63 and can detect the mud shear force of drilling fluid under high shear rate, second differential pressure sensor 64 installs and can detect the mud shear force of drilling fluid under low shear rate on third pipeline 13. The pulsation damper 3 is arranged at the outlet of the screw pump 2, so that the pressure pulsation of a pipeline can be reduced, and the measurement precision is improved; the pressure sensor 61 is arranged on the first pipeline 11, so that the total pressure in the pipeline 1 system can be detected, and the backpressure valve 5 is arranged at the outlet of the third pipeline 13, so that the pipeline pressure in the detection pipeline 1 can be increased, bubbles in the detection pipeline 1 can be eliminated, the detection error is reduced, and the detection precision is improved.
Further, still include data acquisition module 7 and computer 8, data acquisition module 7 with detection subassembly 6 with computer 8 communication connection to acquire the detection data that detection subassembly 6 detected and transmit for computer 8, computer 8 with drive assembly 4 is connected, in order to control drive assembly 4.
Through setting up data acquisition module 7 and computer 8, be convenient for collect the detection data that detecting element 6 detected, the detection data transmission that will collect gives computer 8, can control screw pump 2 according to the detection data through computer 8 to the flow to the drilling fluid in the detection pipeline 1 is controlled, thereby improves and detects the precision.
In this embodiment, the driving assembly 4 includes a variable frequency motor 41 and a frequency converter 42, the variable frequency motor 41 is connected to the screw pump 2, and the frequency converter 42 is connected to the variable frequency motor 41. The variable frequency motor 41 is used for driving the screw pump 2 to rotate, stepless speed change is carried out through control of the frequency converter 42, pressure pulsation in the detection pipeline 1 for controlling the flow of drilling fluid by using a pressure control algorithm can be controlled, and the method specifically comprises the following steps: the relationship between the pressure pulsation summarized by the whole detection pipeline 1 and the frequency of the frequency converter 42 is detected by the pressure sensor 61, the frequency of the frequency converter 42 is optimized, and the frequency of the frequency converter 42 is controlled in real time, so that the pressure pulsation output by the screw pump 2 is reduced to the minimum, and the flow is stable.
When in work, the frequency converter 42 controls the screw pump 2 to flow from 1.2m 3 The/h is gradually reduced to 0.1m 3 And/h, the flow is stable within the range of 10-100 seconds and can be selected every time, and the flow change times are selected within the range of 10-30 times. In the process, the coriolis flowmeter 62 acquires flow, density and temperature parameters of the drilling fluid, the pressure sensor 61 acquires pressure in the whole detection pipeline 1, rheological property of the mud at a high shear rate is calculated according to the pressure difference acquired by the first differential pressure sensor 63 and the acquired flow, and rheological property of the mud at a low shear rate is calculated according to the pressure difference acquired by the second differential pressure sensor 64 and the acquired flow. Data detected by the detection component 6 passesThe data acquisition module 7 is transmitted to the computer 8. At each flow rate test, the computer 8 controls the frequency of the frequency converter 42 through a PID control algorithm, so that the pressure of the whole detection pipeline 1 is stable. And then the parameters of the drilling fluid Heiba model of the drilling fluid are obtained by calculation by utilizing the computer 8. During the initial cut and the final cut of the test, the frequency converter 42 controls the flow of the screw pump 2 to be 1.2m 3 Stopping the screw pump for 210 seconds, starting the screw pump 2 at the lowest flow rate, and calculating to obtain an initial tangent value through the pressure difference measured by the second differential pressure sensor 64; after the screw pump is closed for 210 minutes, the screw pump 2 is started at the lowest flow rate, and the final cut value is calculated through the differential pressure measured by the second differential pressure sensor 64.
Specifically, the pipe diameters of the first pipeline 11 and the second pipeline 12 are in the range of 5mm-20mm, and the pipe diameter of the third pipeline 13 is in the range of 25mm-60 mm. The lengths of the first, second and third pipelines 11, 12, 13 are all in the range of 1m-6 m.
Specifically, the first pipeline 11 and the second pipeline 12, and the second pipeline 12 and the third pipeline 13 are all connected by a U-shaped pipe 14, so that the first pipeline 11, the second pipeline 12 and the third pipeline 13 are arranged in parallel with each other. And a reducer union is arranged at the joint of the second pipeline 12 and the third pipeline 13 and is used for connecting the second pipeline 12 and the third pipeline 13 with different pipe diameters. The first pipeline 11, the second pipeline 12 and the third pipeline 13 are connected through the U-shaped pipes 14, so that the three pipelines are arranged in parallel, and the length of the detection pipeline 1 can be reduced.
Further, the second pipeline 12 and the third pipeline 13 are both provided with a pressure measuring hole 15 for installing the first differential pressure sensor 63 or the second differential pressure sensor 64, and the ratio of the opening depth of the pressure measuring hole 15 to the opening diameter is between 0.1 and 10. By controlling the opening depth of the pressure measuring hole 15 on the pipe wall and the opening diameter to be 0.1-10, the error caused by opening can be reduced, and the tested pressure difference is close to the true value.
Further, the screw pump 2 is connected to the first pipeline 11 through a flange 9, the first pipeline 11 and the coriolis flowmeter 62 are connected to each other through a screw, the second pipeline 12 and the third pipeline 13 are connected to each other through a screw, the pressure sensor 61 and the first pipeline 11 are connected to each other through a screw, and the first differential pressure sensor 63 and the second differential pressure sensor 64 are both mounted on the second pipeline 12 and the third pipeline 13 through a flange 9, respectively.
Further, the span range of the two probes on the first differential pressure sensor 63 and the second differential pressure sensor 64 is between 0.5m and 5m, and the distance between the two probes and the connecting joint between the front pipeline and the rear pipeline is between 0.2m and 1 m. The drilling fluid can be ensured to be fully developed laminar flow in the testing process, and the pressure difference is stable.
The pipeline pressure is increased by arranging the backpressure valve 5, and bubbles in the pipeline are eliminated; the size of the pressure measuring hole 15 is controlled to reduce errors caused by hole opening, the pressure pulsation output by the screw pump 2 is controlled in real time through the frequency converter 42, the influence of the pressure pulsation on the detection pipeline 1 is reduced, the rheological property of the drilling fluid is detected with high precision, and a Henba model curve of the drilling fluid with high precision and initial cut and final cut values of the drilling fluid can be obtained.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (9)
1. The utility model provides a high accuracy drilling fluid rheology on-line measuring device which characterized in that includes:
the device comprises a detection pipeline, a detection device and a control device, wherein the detection pipeline comprises a first pipeline, a second pipeline and a third pipeline which are sequentially connected, and the pipe diameter of the third pipeline is larger than that of the second pipeline and is used for allowing drilling fluid to be detected to flow;
the screw pump is connected to the inlet of the first pipeline and used for inputting the drilling fluid into the first pipeline;
the pulsation damper is arranged at the outlet of the screw pump;
the driving assembly is used for driving the screw pump to rotate;
the backpressure valve is arranged at the outlet of the third pipeline; and the number of the first and second groups,
and the detection assembly comprises a pressure sensor and a coriolis flowmeter which are arranged on the first pipeline, a first differential pressure sensor arranged on the second pipeline and a second differential pressure sensor arranged on the third pipeline.
2. The device for on-line detection of drilling fluid rheological property with high precision according to claim 1, further comprising a data acquisition module and a computer, wherein the data acquisition module is in communication connection with the detection assembly and the computer to acquire detection data detected by the detection assembly and transmit the detection data to the computer, and the computer is connected with the driving assembly to control the driving assembly.
3. The device for online detection of rheological property of high-precision drilling fluid according to claim 1, wherein the driving assembly comprises a variable frequency motor and a frequency converter, the variable frequency motor is connected with the screw pump, and the frequency converter is connected with the variable frequency motor.
4. The high-precision online detection device for the rheological property of the drilling fluid as claimed in claim 1, wherein the pipe diameters of the first pipeline and the second pipeline are both in the range of 5mm-20mm, and the pipe diameter of the third pipeline is 25mm-60 mm.
5. The high accuracy online drilling fluid rheology detection device of claim 4, wherein the first, second, and third lines are all in the range of 1m-6m in length.
6. The high-precision online detection device for drilling fluid rheological property of claim 1, wherein the first pipeline and the second pipeline and the third pipeline are all connected through U-shaped pipes, so that the first pipeline, the second pipeline and the third pipeline are arranged in parallel.
7. The high-precision online detection device for drilling fluid rheological property of claim 1, wherein pressure taps for mounting the first differential pressure sensor or the second differential pressure sensor are respectively arranged on the second pipeline and the third pipeline, and the ratio of the opening depth of each pressure tap to the opening diameter is 0.1-10.
8. The high-precision online detection device for the rheological property of the drilling fluid according to claim 1, wherein the screw pump is connected with the first pipeline through a flange, the first pipeline and the coriolis flowmeter are connected with each other through a screw thread, the second pipeline and the third pipeline are connected with each other through a screw thread, the pressure sensor is connected with the first pipeline through a screw thread, and the first differential pressure sensor and the second differential pressure sensor are respectively installed on the second pipeline and the third pipeline through flanges.
9. The high-precision online detection device for the rheological property of the drilling fluid, as claimed in claim 8, wherein the span ranges of the two probes on the first differential pressure sensor and the second differential pressure sensor are between 0.5m and 5m, and the distance between the two probes and the connection joint between the front pipe and the rear pipe is between 0.2m and 1 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122726587.2U CN217212102U (en) | 2021-11-08 | 2021-11-08 | High-precision drilling fluid rheological property online detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122726587.2U CN217212102U (en) | 2021-11-08 | 2021-11-08 | High-precision drilling fluid rheological property online detection device |
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| Publication Number | Publication Date |
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| CN217212102U true CN217212102U (en) | 2022-08-16 |
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| CN202122726587.2U Active CN217212102U (en) | 2021-11-08 | 2021-11-08 | High-precision drilling fluid rheological property online detection device |
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2021
- 2021-11-08 CN CN202122726587.2U patent/CN217212102U/en active Active
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