CN214836211U - Drilling fluid overflow early warning monitoring system - Google Patents
Drilling fluid overflow early warning monitoring system Download PDFInfo
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- CN214836211U CN214836211U CN202121186224.8U CN202121186224U CN214836211U CN 214836211 U CN214836211 U CN 214836211U CN 202121186224 U CN202121186224 U CN 202121186224U CN 214836211 U CN214836211 U CN 214836211U
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Abstract
The utility model discloses a drilling fluid overflow early warning monitoring system, including flow control computer, mud launder and box, the box side is equipped with the overflow pipe, open bottom half has little trace mud to export, mud launder both sides and the position that corresponds with little trace mud export are equipped with little micro flow sensor, the box side is equipped with the main metering pipeline rather than inside intercommunication, main metering pipeline is equipped with the main flowmeter on the road, main metering pipeline bottom is equipped with the sample metering pipeline of both ends respectively with main metering pipeline and box intercommunication, be equipped with the double-phase mass flowmeter of gas-liquid on the sample metering pipeline, the one end that main metering pipeline kept away from the box is equipped with the mud admission pipe, little micro flow sensor, main flowmeter and the double-phase mass flowmeter of gas-liquid all are connected with flow control computer communication. The utility model discloses can monitor and guarantee the accurate of monitoring to mud fluid, compromise the function of early warning simultaneously.
Description
Technical Field
The utility model belongs to the technical field of the industry mud fluid measurement, concretely relates to drilling fluid overflow early warning monitoring system.
Background
With the rapid development of oil exploration and development in recent years, the operational safety of drilling equipment has become extremely important. During the drilling process, mud fluid is injected into a well head, and the mud fluid has the effects of cleaning the well bottom and carrying rock debris, cooling and lubricating a drill bit, a drill string and balancing the rock side pressure of a well wall during the drilling process. Whether the mud fluid circulation is balanced directly impacts the safety of the drilling operation and therefore needs to be monitored. In the prior art, devices for monitoring the slurry fluid exist, but the devices only have a simple monitoring function, and have the defects of inaccurate monitoring, false system report, missing system report, incapability of making early warning through the monitored slurry fluid data and the like. Therefore, a design is needed to monitor the slurry fluid and ensure the monitoring accuracy, and simultaneously, the early warning function is taken into consideration, so as to meet the actual requirement.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve just is not enough to above-mentioned prior art, provides a drilling fluid overflow early warning monitoring system, can monitor and guarantee the accurate of monitoring to mud fluid, compromises the function of early warning simultaneously.
The utility model adopts the technical proposal that: a drilling fluid overflow early warning monitoring system comprises a flow control computer, a slurry flow groove and a box body, wherein the top of the box body is provided with an opening, the side surface of the box body, close to the top, is provided with an overflow pipe communicated with the inside of the box body, the bottom of the box body is provided with a small trace mud outlet, the overflow pipe and the small trace mud outlet are both positioned above the slurry flow groove, the two sides of the slurry flow groove and the position corresponding to the small trace mud outlet are provided with a small trace flow sensor, the side surface of the box body is provided with a main metering pipeline communicated with the inside of the box body, the main metering pipeline is provided with a main flow meter, the bottom of the main metering pipeline is provided with a sampling metering pipeline, the two ends of the sampling metering pipeline are respectively communicated with the main metering pipeline and the box body, the sampling metering pipeline is provided with a gas-liquid two-phase mass flow meter, and one end, far away from the box body, of the main metering pipeline is provided with a mud inlet pipe, and the small micro flow sensor, the main flowmeter and the gas-liquid two-phase mass flowmeter are all in communication connection with the flow control computer.
In one embodiment, a densimeter, an air exhauster and a conductivity measuring instrument are respectively arranged at the position close to the top inside the box body through a support, and the densimeter, the air exhauster and the conductivity measuring instrument are all in communication connection with the flow control computer.
In one embodiment, the outer side wall of the box body is respectively provided with a camera and an audible and visual alarm through a support, and the camera and the audible and visual alarm are both in communication connection with the flow control computer.
In one embodiment, the overflow tube inlet position is higher than the main metering tube outlet position.
In one embodiment, the flow capacity of the overflow pipe is larger than that of the mud inlet pipe, and the flow capacity of the mud inlet pipe is larger than that of the small micro mud outlet.
In one embodiment, the main metering pipeline, the sampling metering pipeline and the slurry inlet pipe form included angles with the horizontal plane which are less than or equal to 90 degrees.
The beneficial effects of the utility model reside in that:
1. the position of the inlet of the overflow pipe is higher than the position of the outlet of the main metering pipeline, so that the main metering pipeline can be fully filled, and the accuracy of subsequent metering is ensured;
2. the flow capacity of the overflow pipe is greater than that of the slurry inlet pipe, and the flow capacity of the slurry inlet pipe is greater than that of the small trace slurry outlet, so that the flow capacity of the whole device can be fully ensured, and the slurry fluid is prevented from overflowing due to untimely flow;
3. the box body is simultaneously provided with a small trace slurry outlet and an overflow pipe, so that the slurry can be discharged in time when no flow exists or the production stops;
4. a small micro flow sensor is arranged at the side surface of the slurry flow groove corresponding to a small micro slurry outlet of the box body, a sampling metering pipeline is arranged at the bottom of the main metering pipeline, a gas-liquid two-phase mass flowmeter is arranged on the sampling metering pipeline, and when the drilling machine stops, the overflow of the micro slurry can be detected and an alarm is given, so that the safety of drilling is ensured;
5. through the reasonable arrangement of each part of the device, the cost can be saved, and the measurement precision is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is the structural schematic diagram of the box body of the present invention.
In the figure: 1. introducing slurry into a pipe; 2. a primary flow meter; 3. a densitometer; 4. a box body; 5. an overflow pipe; 6. a slurry flow channel; 7. a small micro flow sensor; 8. a main metering line; 9. a flow control computer; 10. a sampling and metering pipeline; 11. a gas-liquid two-phase mass flowmeter; 12. an exhaust stack; 13. a conductivity measuring instrument; 14. a camera; 15. an audible and visual alarm; 41. and (5) a small and micro slurry outlet.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example 1:
as shown in fig. 1 and 2, a drilling fluid overflow early warning monitoring system comprises a flow control computer 9, a mud flow groove 6 and a box 4 arranged above the mud flow groove 6 and provided with an opening at the top, an overflow pipe 5 communicated with the inside is arranged at a position on the side surface of the box 4 close to the top, a small micro mud outlet 41 is arranged at the bottom of the box 4, the overflow pipe 5 and the small micro mud outlet 41 are both positioned above the mud flow groove 6, small micro flow sensors 7 are arranged at positions on two sides of the mud flow groove 6 and corresponding to the small micro mud outlet 41, a main metering pipeline 8 communicated with the inside is arranged on the side surface of the box 4, a main flowmeter 2 is arranged on the main metering pipeline 8, a sampling metering pipeline 10 with two ends respectively communicated with the main metering pipeline 8 and the box 4 is arranged at the bottom of the main metering pipeline 8, and a gas-liquid two-phase mass flowmeter 11 is arranged on the sampling metering pipeline 10, and a slurry inlet pipe 1 is arranged at one end of the main metering pipeline 8, which is far away from the box body 4, and the small micro flow sensor 7, the main flowmeter 2 and the gas-liquid two-phase mass flowmeter 11 are all in communication connection with a flow control computer 9.
The drilling fluid overflow early warning monitoring system is provided with a main metering pipeline 8 and a sampling metering pipeline 10, wherein the main metering pipeline 8 is mainly responsible for metering the flow of large-flow mud fluid. The sampling and metering pipeline 10 is used for sampling and metering the mud fluid, and besides the flow rate of the mud fluid, the sampling and metering pipeline also meters the temperature data and the density data of the mud fluid, and the measured temperature data and the measured density data can be used for debugging reference of the running state of equipment. In such a mode, due to the sampling measurement, the normal measurement of the flow of the slurry fluid is not influenced while the measurement precision is ensured.
Example 2:
as shown in fig. 1 and 2, in the above embodiment, the inside of the box 4 near the top is provided with a density meter 3, an exhaust gas exhauster 12 and a conductivity measuring instrument 13 through a bracket, respectively, and the density meter 3, the exhaust gas exhauster 12 and the conductivity measuring instrument 13 are all connected with the flow control computer 9 in communication.
The arrangement of the densitometer 3, the gas exhauster 12 and the conductivity measuring instrument 13 is used for secondary metering of the slurry fluid. The density of the slurry fluid measured by the densitometer 3 and the conductivity of the slurry fluid measured by the conductivity measuring instrument 13 are used for comparison with the density data measured by the gas-liquid two-phase mass flowmeter 11 and the actual conductivity of the slurry fluid. Through comparison, the accuracy of measurement can be fully guaranteed.
Example 3:
as shown in fig. 1 and fig. 2, on the basis of the above embodiment, the outer side wall of the box 4 is respectively provided with a camera 14 and an audible and visual alarm 15 through a bracket, and both the camera 14 and the audible and visual alarm 15 are in communication connection with the flow control computer 9.
The camera 14 is arranged for monitoring the condition in the box body 4 when the small micro flow sensor 7 gives an alarm, and preventing false alarm caused by faults of the small micro flow sensor 7, the main flow meter 2 and the gas-liquid two-phase mass flow meter 11.
Example 4:
as shown in fig. 1 and 2, in the above embodiment, the inlet position of the overflow pipe 5 is higher than the outlet position of the main metering pipe 8.
The arrangement can ensure that the main metering pipeline 8 is full, thereby ensuring the accuracy of subsequent metering.
Example 5:
as shown in fig. 1 and 2, in the above embodiment, the flow capacity of the overflow pipe 5 is larger than that of the slurry inlet pipe 1, and the flow capacity of the slurry inlet pipe 1 is larger than that of the small and minute amount slurry outlet 41.
The arrangement is intended to ensure the flow capacity of each component, thus ensuring smooth discharge of slurry fluid in the tank 4 and preventing the slurry fluid from overflowing from the opening at the top of the tank 4.
Example 6:
as shown in figures 1 and 2, on the basis of the above embodiment, the included angles between the main metering pipeline 8, the sampling metering pipeline 10 and the slurry inlet pipe 1 and the horizontal plane are all less than or equal to 90 degrees.
Set up certain angle, guarantee smooth circulation of mud fluid, also can guarantee the smooth pipe that fills of mud fluid simultaneously, guarantee the accuracy of measurement.
The drilling fluid overflow early warning and monitoring system can be used for performing drilling fluid overflow early warning and monitoring, and specifically comprises the following steps:
Step 20, slurry fluid enters from the slurry inlet pipe 1, a part of the slurry fluid enters the main metering pipeline 8, a part of the slurry fluid enters the sampling metering pipeline 10, the main metering pipeline 8 is fully distributed with the slurry fluid, the main flowmeter 2 continuously meters the flow of the slurry fluid, the metered slurry fluid flow data is output to the flow control computer 9 in real time, if the metered slurry fluid flow is larger than the lower limit value of the flow of the main flowmeter 2, the drilling fluid overflow early warning monitoring system carries out slurry fluid metering operation, the step 30 is carried out, if the metered slurry fluid flow is smaller than or equal to the lower limit value of the flow of the main flowmeter 2, the mud fluid flow change trend is monitored and judged, if the flow change trend is normal, the main flowmeter 2 keeps the state of continuously metering the slurry fluid flow, if the flow change trend is abnormal, the drilling fluid overflow early warning monitoring system carries out the slurry fluid overflow early warning operation, entering a step 50;
in the step, the mud fluid flow measured by the main flowmeter 2 is used as a condition for switching the drilling fluid overflow early warning and monitoring system mode, so that the automatic switching of the drilling fluid overflow early warning and monitoring system mode can be realized. To ensure full slurry flow, valves may be provided at the ends of the main metering line 8 and the sample metering line 10 adjacent the housing 4 and closed to ensure full efficiency. Meanwhile, the judgment of whether the mud fluid flow variation trend is normal can be carried out through manual judgment or through setting the variation trend. If the mud fluid flow variation trend is normal, the drilling system enters a shutdown mode, and the drilling fluid overflow early warning and monitoring system is in a state of emptying mud fluid; if the mud fluid flow changes abnormally, which indicates that the bottom of the well is abnormal, the drilling fluid overflow early warning and monitoring system enters into mud fluid overflow early warning operation.
Step 30, the gas-liquid two-phase mass flow meter 11 continuously measures the temperature, the density and the flow of the slurry fluid entering the sampling and measuring pipeline 10, the measured temperature data, the density data and the flow data of the slurry fluid are output to the flow control computer 9 in real time, the sum of the flow of the slurry fluid measured by the main flow meter 2 and the gas-liquid two-phase mass flow meter 11 is the total flow of the slurry fluid, if the flow of the slurry fluid measured by the main flow meter 2 is larger than or smaller than the set standard range value of the flow of the main flow meter 2, the small micro flow sensor 7 gives an alarm, and the step 40 is carried out; in the step, the standard range value of the flow of the main flowmeter 2 is used as a reference, and when data is abnormal, the system gives an alarm in time. The alarm at this moment has two possibilities, one of which is that the well bottom and the drilling system are in failure, and the other of which is that the drilling fluid overflow early warning monitoring system is in failure, so that the alarm can be timely early warned no matter which of the situations occurs, and the processing is convenient.
Step 40, the slurry fluid enters the box body 4, enters the slurry flow groove 6 through the overflow pipe 5 and the small trace slurry outlet 41 and is discharged from the slurry flow groove 6;
step 50, the main flowmeter 2 and the gas-liquid two-phase mass flowmeter 11 continuously measure the flow of the slurry fluid, if at least one of the main flowmeter 2 and the gas-liquid two-phase mass flowmeter 11 measures the flow data of the slurry fluid, the measured flow data of the slurry fluid is output to the flow control computer 9, the small micro flow sensor 7 gives an alarm, the small micro flow sensor 7 continuously detects the flow signal of the slurry fluid, if the flow signal of the slurry fluid is detected, the detected flow signal of the slurry fluid is output to the flow control computer 9, and the small micro flow sensor 7 gives an alarm. The step is mainly used for early warning operation of slurry fluid overflow, the small micro flow sensor 7, the main flow meter 2 and the gas-liquid two-phase mass flow meter 11 work cooperatively, and as long as one of the components detects related data of the slurry fluid, the system gives an alarm to remind workers of monitoring the drilling system in time so as to ensure the safety of the drilling system.
In step 40 of the method, air bubbles in the slurry fluid are expelled through the air expeller 12.
The drilling fluid overflow early warning and monitoring system can be used for early warning and monitoring of drilling fluid overflow, and further comprises a secondary mud fluid metering step, which is as follows:
the densitometer 3 and conductivity meter 13 continuously meter the density and conductivity of the slurry fluid entering the tank 4 and output the measured density and conductivity data to the flow control computer 9.
The secondary measurement step of the mud fluid is arranged, so that the measurement accuracy of the mud fluid is improved, the measurement deviation caused by damage or abnormity of the drilling fluid overflow early warning and monitoring system component is prevented, and the safety of a drilling system is ensured from the side.
The drilling fluid overflow early warning and monitoring system can be used for performing drilling fluid overflow early warning and monitoring, and further comprises a video monitoring step, wherein the video monitoring step specifically comprises the following steps:
the camera 14 continuously collects video signals in the box 4 and outputs the collected video signals to the flow control computer 9. The step is set for final confirmation, and false alarm caused by damage or abnormality of the drilling fluid overflow early warning and monitoring system component is prevented.
The inlet position of the overflow pipe 5 of the utility model is higher than the outlet position of the main metering pipeline 8, which can ensure the main metering pipeline 8 to be full of pipes, thereby ensuring the accuracy of the subsequent metering; the flow capacity of the overflow pipe 5 is larger than that of the mud inlet pipe 1, and the flow capacity of the mud inlet pipe 1 is larger than that of the small and micro mud outlet 41, so that the flow capacity of the whole device can be fully ensured, and the mud fluid is prevented from overflowing due to untimely flow; the box body 4 is simultaneously provided with a small trace slurry outlet 41 and an overflow pipe 5, so that the slurry can be discharged in time when no flow exists or the production stops; a small micro flow sensor 7 is arranged at the position of the side surface of the slurry flow groove 6 corresponding to a small micro slurry outlet 41 of the box body 4, a sampling metering pipeline 10 is arranged at the bottom of the main metering pipeline 8, and a gas-liquid two-phase mass flowmeter 11 is arranged on the sampling metering pipeline 10, so that when the drilling machine stops, the overflow of the micro slurry can be detected, an alarm is given, and the safety of drilling is ensured; through the reasonable arrangement of each part of the device, the cost can be saved, and the measurement precision is improved.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (6)
1. The utility model provides a drilling fluid overflow early warning monitoring system which characterized in that: comprises a flow control computer, a slurry flow groove and a box body which is arranged above the slurry flow groove and is provided with an opening at the top, an overflow pipe communicated with the inside of the box body is arranged at the position of the side surface of the box body close to the top, a small micro-slurry outlet is arranged at the bottom of the box body, the overflow pipe and the small micro-mud outlet are both positioned above the mud flow groove, small micro-flow sensors are arranged at the two sides of the mud flow groove and at the positions corresponding to the small micro-mud outlet, a main metering pipeline communicated with the inside of the box body is arranged on the side surface of the box body, a main flowmeter is arranged on the main metering pipeline, the bottom of the main metering pipeline is provided with a sampling metering pipeline with two ends respectively communicated with the main metering pipeline and the box body, the sampling and metering pipeline is provided with a gas-liquid two-phase mass flowmeter, one end of the main metering pipeline, which is far away from the box body, is provided with a slurry inlet pipe, and the small micro flow sensor, the main flowmeter and the gas-liquid two-phase mass flowmeter are all in communication connection with the flow control computer.
2. The drilling fluid overflow early warning and monitoring system of claim 1, wherein: the inside position that is close to the top of box is equipped with densimeter, air exhauster and conductivity measuring apparatu respectively through the support, densimeter, air exhauster and conductivity measuring apparatu all are connected with flow control computer communication.
3. The drilling fluid overflow warning and monitoring system of claim 1 or 2, wherein: the outer side wall of the box body is provided with a camera and an audible and visual alarm respectively through a support, and the camera and the audible and visual alarm are both in communication connection with the flow control computer.
4. The drilling fluid overflow early warning and monitoring system of claim 1, wherein: the inlet position of the overflow pipe is higher than the outlet position of the main metering pipeline.
5. The drilling fluid overflow early warning and monitoring system of claim 4, wherein: the flow capacity of the overflow pipe is larger than that of the mud inlet pipe, and the flow capacity of the mud inlet pipe is larger than that of the small and micro mud outlet.
6. The drilling fluid overflow early warning and monitoring system of claim 5, wherein: the included angles between the main metering pipeline, the sampling metering pipeline and the slurry inlet pipe and the horizontal plane are all less than or equal to 90 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121186224.8U CN214836211U (en) | 2021-05-28 | 2021-05-28 | Drilling fluid overflow early warning monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121186224.8U CN214836211U (en) | 2021-05-28 | 2021-05-28 | Drilling fluid overflow early warning monitoring system |
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| CN214836211U true CN214836211U (en) | 2021-11-23 |
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| CN202121186224.8U Active CN214836211U (en) | 2021-05-28 | 2021-05-28 | Drilling fluid overflow early warning monitoring system |
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