CN112901095A - Online measuring device and method for non-full pipe of drilling outlet flow - Google Patents
Online measuring device and method for non-full pipe of drilling outlet flow Download PDFInfo
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- CN112901095A CN112901095A CN202110405594.4A CN202110405594A CN112901095A CN 112901095 A CN112901095 A CN 112901095A CN 202110405594 A CN202110405594 A CN 202110405594A CN 112901095 A CN112901095 A CN 112901095A
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- flow
- drilling fluid
- drilling
- tank
- full pipe
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
Abstract
The invention relates to a device and a method for online measuring the flow of a drilling outlet but not full pipe, wherein the device for online measuring the flow of the drilling outlet but not full pipe comprises the following components: the flow detection tank is arranged between the elevated tank and the vibrating screen buffer tank; the weighing module is arranged at the bottom of the flow detection tank and used for monitoring the quality of the drilling fluid in the detection tank on line; and the flow velocity detection sensor is arranged on the side surface of the detection groove and is used for measuring the flow velocity of the drilling fluid in the detection groove on line. In the drilling process, the returned drilling fluid flows through the flow detection groove through the overflow pipe and the overhead groove, the mass/volume and the flow rate of the real-time drilling fluid are monitored on line by the weighing module and the flow rate detection module which are arranged on the detection groove, and accordingly the flow of the returned drilling fluid can be obtained in real time. The invention can measure the flow of the outlet of the drilling well on line, has simple structure, convenient installation and low cost compared with the traditional flow sensor, and can convert the volume of the drilling fluid by mass without full pipe measurement.
Description
Technical Field
The invention relates to the technical field of geological logging engineering in an oil drilling site, in particular to an online measuring device and method for the flow of upward-returning drilling fluid in the drilling site, and particularly relates to an online measuring device and method for the flow of a drilling outlet non-full pipe.
Background
During the drilling process, the monitoring of the flow of the upward drilling fluid can be used for knowing the information of the working condition of the stratum in real time, and the method has important significance for forecasting the early kick and the leakage, can find the accident in the first time and provides precious time for accident treatment.
At present, a drilling fluid outlet flow monitoring device and a method for forecasting early well kick and leakage are generally mass flowmeters, and a measurement working condition of full pipe is formed by transforming a return drilling fluid overhead groove. Although the mass flowmeter has high measurement precision and accuracy, the cost is very high, the mass flowmeter suitable for the outlet pipeline needs at least 8 inches of caliber, the cost is more than 50 ten thousand yuan, the outlet elevated slot needs to be modified every time the mass flowmeter is used, and the use and maintenance cost is huge, so the mass flowmeter is difficult to popularize on the onshore drilling wells with shorter and shorter construction periods.
Disclosure of Invention
The invention aims to provide a device and a method for online measuring the flow of a drilling fluid outlet without full pipe aiming at the defects of the device and the method for monitoring the flow of the drilling fluid outlet for forecasting the early well kick and leakage, wherein the device and the method can realize online measurement of the flow of the drilling fluid outlet without full pipe only by additionally arranging a small section of measuring device between the tail end of an elevated tank and a buffer tank of a vibrating screen, have low cost, convenient installation and high accuracy, are an ideal substitute device and method for conventional full pipe flow measurement, and can online monitor the flow of the drilling fluid outlet without full pipe.
To achieve the above object, the present invention provides an online measuring device for measuring a drilling outlet flow rate, which comprises:
the flow detection tank is arranged between the elevated tank and the vibrating screen buffer tank;
the weighing module is arranged on the flow detection groove and used for monitoring the mass M of the drilling fluid in the flow detection groove on line;
the flow velocity detection sensor is arranged on the flow detection groove and is used for measuring the flow velocity of the drilling fluid in the flow detection groove on line;
the system comprises a weighing module, a flow rate detection sensor, a drilling fluid real-time flow information calculation and measurement module, a weighing module and a flow rate detection sensor, wherein the weighing module is in signal connection with the drilling fluid real-time flow information calculation and measurement module, and the drilling fluid real-time flow information calculation and measurement module calculates the drilling fluid real-time flow information in a non-full pipe state according to a drilling fluid mass M signal transmitted by the weighing module and a drilling fluid flow rate signal transmitted by the flow rate.
In a preferred embodiment of the present invention, the weighing module is disposed at the bottom outside the flow rate detection tank.
In a preferred embodiment of the present invention, the flow rate detection sensor is provided on a tank side wall of the flow rate detection tank.
In a preferred embodiment of the present invention, the flow detection slot is generally regular in shape, so as to facilitate calculation of the cross-sectional area S of the drilling fluid flowing through the flow detection slot.
In a preferred embodiment of the invention, the flow detection groove is designed to be an upper opening, so that a field operator can observe the liquid level of the drilling fluid conveniently and clean the debris and the sand at the bottom in time.
In a preferred embodiment of the invention, the flow velocity detection sensors are arranged in a plurality of ways and are arranged at different heights and front and back positions from the bottom of the flow detection tank, so that the flow velocity condition of the drilling fluid in the flow detection tank can be obtained as accurately as possible, and the real-time average flow velocity v is obtained according to an algorithm.
In a preferred embodiment of the invention, the weighing module needs to meet the on-site explosion-proof requirement, and the weighed mass M of the drilling fluid can be used for calculating the real-time volume V of the drilling fluid in the flow detection tank according to the drilling fluid density value rho measured by other conventional sensors.
In a preferred embodiment of the invention, the drilling outlet flow non-full pipe online measuring device further comprises an accessory which is connected with the elevated tank and the vibrating screen buffer tank.
The on-line measurement method for the drilling outlet flow non-full pipe in the second aspect of the invention is to perform on-line weighing on the drilling fluid in the designated working section to obtain the real-time mass M, calculate the volume V and the cross-sectional area S of the drilling fluid in the designated working section according to the density value rho of the drilling fluid obtained by other sensors, measure and calculate the average flow velocity V of the drilling fluid in the designated working section according to the flow velocity sensor, and finally obtain the real-time flow information Q of the drilling fluid in the non-full pipe state, which is S multiplied by V. In a preferred embodiment of the present invention, the designated section is a flow detection tank with a regular shape.
In a preferred embodiment of the invention, the volume V of drilling fluid is determined from the mass M of drilling fluid by weighing, without the need for a full pipe measurement.
In conclusion, the online measuring device and method for the flow of the drilling outlet not full pipe have the advantages of low cost, convenience in installation and high accuracy, and can realize online measurement of the flow of the drilling outlet not full pipe.
Drawings
FIG. 1 is a schematic structural diagram of an online measuring device for measuring the flow of a drilling outlet not full of a pipe in the invention.
Detailed Description
The technical content, constructional features, achieved objects and effects of the invention are described in detail below by means of a preferred embodiment in connection with fig. 1.
As shown in fig. 1, the online measuring device for measuring the drilling outlet flow not full of pipe provided by the present invention comprises a flow detection tank 1, a weighing module 11, a flow velocity detection sensor 12, and a drilling fluid real-time flow information calculation and measurement module (not shown in the figure).
The flow detection tank 1 is arranged between the elevated tank 2 and a buffer tank (in the figure) of the vibrating screen; the flow detection groove 1 is generally regular in shape, so that the cross-sectional area S of the drilling fluid 3 flowing through the flow detection groove can be calculated conveniently, in the embodiment, the bottom surface of the flow detection groove 1 is a rectangle with the size of 500mm multiplied by 500mm, and the height is also 500 mm; the flow detection tank 1 is designed to be an upper opening, so that field operators can observe the liquid level of the drilling fluid conveniently and clean the rock debris and the sand in time. Of course, the flow rate detection tank 1 is not limited to the shape shown in fig. 1, and may have other regular shapes known to those skilled in the art.
The drilling outlet flow non-full pipe on-line measuring device of the present invention further comprises accessories connected to the elevated tank 2 and the vibrating screen buffer tank (not shown), which are well known in the art and will not be described herein.
The weighing module 11 is arranged on the flow detection tank 1, especially arranged at the bottom outside the flow detection tank 1, and is used for monitoring the mass M of the drilling fluid 3 in the detection tank 1 on line. Particularly, the weighing module 11 needs to meet the on-site explosion-proof requirement, and the mass M of the weighed drilling fluid 3 can be calculated according to the drilling fluid density value rho measured by other conventional sensors to obtain the real-time volume V of the drilling fluid in the flow detection tank 1.
The flow velocity detection sensor 12 is disposed on the flow detection tank 1, particularly on the tank sidewall of the flow detection tank 1, and is used for measuring the flow velocity of the drilling fluid 3 in the flow detection tank 1 on line. Particularly, the flow velocity detection sensors 12 are arranged in a plurality of positions, are arranged at different heights and front and back positions from the bottom of the flow detection tank 1, can accurately obtain the flow velocity condition of the drilling fluid 3 in the flow detection tank 1 as far as possible, and obtain the real-time average flow velocity v according to an algorithm. As a specific example, the flow velocity detection sensors 12 are Doppler ultrasonic sensors mounted at positions 150mm, 80mm, and 20mm from the bottom of the flow rate detection tank 1, respectively.
The weighing module 11 and the flow velocity detection sensor 12 are in signal connection with the drilling fluid real-time flow information calculation and measurement module, and the drilling fluid real-time flow information calculation and measurement module calculates the drilling fluid real-time flow information in a non-full pipe state according to a drilling fluid mass M signal transmitted by the weighing module 11 and a drilling fluid flow velocity signal transmitted by the flow velocity detection sensor 12.
The online measurement method for the drilling outlet flow non-full pipe comprises the steps of weighing the drilling fluid 3 in a specified working section online to obtain a real-time mass M, calculating the volume V and the cross-sectional area S of the drilling fluid 3 in the specified working section according to the density value rho of the drilling fluid obtained by other sensors, measuring and calculating the average flow velocity V of the drilling fluid in the specified working section according to the flow velocity detection sensor 12, and finally obtaining the real-time flow information Q of the drilling fluid in the non-full pipe state, wherein the real-time flow information Q is S multiplied by V. The designated working section is the flow detection tank 1 with the regular shape. The volume V of the drilling fluid 3 is obtained according to the drilling fluid mass M of the weighing method, and full pipe measurement is not needed.
In conclusion, the online measuring device and method for the flow of the drilling outlet not full pipe have the advantages of low cost, convenience in installation and high accuracy, and can realize online measurement of the flow of the drilling outlet not full pipe.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (10)
1. An online measuring device for measuring the flow of a drilling outlet without full pipe, which is characterized by comprising:
the flow detection tank is arranged between the elevated tank and the vibrating screen buffer tank;
the weighing module is arranged on the flow detection groove and used for monitoring the mass M of the drilling fluid in the flow detection groove on line;
the flow velocity detection sensor is arranged on the flow detection groove and is used for measuring the flow velocity of the drilling fluid in the flow detection groove on line;
the system comprises a weighing module, a flow rate detection sensor, a drilling fluid real-time flow information calculation and measurement module, a weighing module and a flow rate detection sensor, wherein the weighing module is in signal connection with the drilling fluid real-time flow information calculation and measurement module, and the drilling fluid real-time flow information calculation and measurement module calculates the drilling fluid real-time flow information in a non-full pipe state according to a drilling fluid mass M signal transmitted by the weighing module and a drilling fluid flow rate signal transmitted by the flow rate.
2. The on-line measuring device for the flow of the drilling outlet non-full pipe as claimed in claim 1, wherein the weighing module is arranged at the bottom outside the flow detection tank.
3. The on-line measuring device for the non-full pipe of the drilling outlet flow as claimed in claim 1, wherein the flow rate detection sensor is arranged on the side wall of the flow detection tank.
4. The on-line measuring device for the flow of a drilling outlet of claim 1, wherein the flow detecting groove has a generally regular shape.
5. The on-line measuring device for the flow of the drilling outlet non-full pipe as claimed in claim 1, wherein the flow detecting groove is designed to be an upper opening.
6. The on-line measuring device for the non-full pipe of the outlet flow of the drilling well as claimed in any one of claims 1 to 5, wherein the flow velocity detecting sensor is provided in a plurality of arrangements, and is installed at different heights and front and back positions from the bottom of the flow detecting tank.
7. The on-line measuring device for the flow of the drilling outlet non-full pipe as claimed in claim 6, wherein the mass M of the drilling fluid weighed by the weighing module can be calculated according to the density value p of the drilling fluid measured by other conventional sensors to obtain the real-time volume V of the drilling fluid in the flow detection tank.
8. The on-line measuring device for the flow of the drilling outlet not being full of the pipe as claimed in claim 1, further comprising an attachment mounted in connection with the elevated tank and the buffer tank of the vibrating screen.
9. The online measurement method for the flow of the drilling outlet non-full pipe is characterized in that the drilling fluid in a designated working section is weighed online to obtain a real-time mass M, the volume V and the cross-sectional area S of the drilling fluid in the designated working section are obtained through calculation according to the density value rho of the drilling fluid obtained by other sensors, the average flow velocity V of the drilling fluid in the designated working section is obtained through measurement and calculation according to a flow velocity sensor, and the real-time flow information Q of the drilling fluid in the non-full pipe state is obtained finally. In a preferred embodiment of the present invention, the designated section is a flow detection tank with a regular shape.
10. The method of claim 9 wherein the volume V of drilling fluid is determined by the weight of drilling fluid M without the need for a full pipe measurement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110405594.4A CN112901095A (en) | 2021-04-15 | 2021-04-15 | Online measuring device and method for non-full pipe of drilling outlet flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110405594.4A CN112901095A (en) | 2021-04-15 | 2021-04-15 | Online measuring device and method for non-full pipe of drilling outlet flow |
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| CN112901095A true CN112901095A (en) | 2021-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110405594.4A Pending CN112901095A (en) | 2021-04-15 | 2021-04-15 | Online measuring device and method for non-full pipe of drilling outlet flow |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116733396A (en) * | 2023-08-11 | 2023-09-12 | 四川奥达测控装置有限公司 | Drilling outlet flow monitoring and well control overflow and leakage early warning system and method |
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2021
- 2021-04-15 CN CN202110405594.4A patent/CN112901095A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116733396A (en) * | 2023-08-11 | 2023-09-12 | 四川奥达测控装置有限公司 | Drilling outlet flow monitoring and well control overflow and leakage early warning system and method |
| CN116733396B (en) * | 2023-08-11 | 2023-10-31 | 四川奥达测控装置有限公司 | Drilling outlet flow monitoring and well control overflow and leakage early warning system and method |
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