Radar type outlet drilling fluid flow monitoring device

Abstract

The utility model relates to the technical field of drilling fluid flow monitoring devices, in particular to a radar type outlet drilling fluid flow monitoring device which comprises a buffer tank, an elevated pipe and a guided wave radar liquid level meter, the elevated pipe is installed on the buffer tank in a communicated mode, a communicating pipe communicated with the interior of the elevated pipe is installed on the upper side of the elevated pipe, and a connecting pipe is installed on the communicating pipe. The connecting pipe is provided with an outlet which is through inside and outside, and a guided wave radar liquid level meter is installed at the upper end of the connecting pipe. The guide wave radar liquid level meter is reasonable and compact in structure and convenient to use, the height of the liquid level in the elevated pipe can be measured more accurately by installing the guide wave radar liquid level meter on the elevated pipe, so that flow parameters are calculated, water vapor in the communicating pipe is discharged through the outlet in the connecting pipe, interference factors are reduced, and the accuracy of measurement results is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling fluid flow monitoring devices, in particular to a radar-type outlet drilling fluid flow monitoring device. Background Art

[0002] During the oil drilling and development process, the outlet flow is one of the main means of monitoring overflow. At present, there are two types of outlet flow monitoring, one is the target flow meter, and the other is the ultrasonic sensor. In use, the target flow meter is affected by the high-speed flow of drilling fluid, resulting in large fluctuations in measurement parameters. A large amount of water vapor can easily cause mechanical parts to rust, and mud cakes can easily cause mechanical parts to fail. Ultrasonic sensors are affected by the fluctuating drilling fluid level and water vapor, resulting in the loss of ultrasonic pulses and distortion of measurement data. The above two measurement tools will cause problems such as overflow monitoring lag. Summary of the invention

[0003] The utility model provides a radar-type outlet drilling fluid flow monitoring device, which overcomes the deficiencies of the above-mentioned prior art and can effectively solve the problems that the existing outlet flow monitoring tools are easily affected by water vapor and the flow monitoring is inaccurate due to large liquid level fluctuations, resulting in overflow monitoring lag.

[0004] The technical solution of the utility model is achieved through the following measures: a radar-type outlet drilling fluid flow monitoring device, including a buffer tank, an elevated pipe, and a waveguide radar level meter. The buffer tank is connected and installed with the elevated pipe, a connecting pipe connected to the elevated pipe is installed on the upper side of the elevated pipe, a connecting pipe is installed on the connecting pipe, an outlet that passes through the inside and the outside is provided on the connecting pipe, and a waveguide radar level meter is installed on the upper end of the connecting pipe.

[0005] The following are further optimizations and / or improvements to the above utility model technical solution:

[0006] Preferably, it also includes a screen tube, a measuring plate and a float. The connecting pipe is provided with a screen tube, the lower end of the screen tube is located in the elevated pipe, a plurality of flow holes are provided along the circumference of the screen tube, the upper part of the float is located in the connecting pipe, and the upper side of the float is provided with a measuring plate located in the connecting pipe.

[0007] Preferably, the flow holes at the upper part of the screen tube are smaller than the flow holes at the lower part thereof.

[0008] Preferably, the connecting pipe and the connecting pipe are connected via a flange.

[0009] Preferably, a sealing rubber ring is further included, and a sealing rubber ring with an inner diameter smaller than the inner diameter of the flange is provided between the two flanges.

[0010] Preferably, a guided wave radar level meter and a connecting pipe are installed on the buffer tank.

[0011] The utility model has a reasonable and compact structure and is easy to use. By installing a guided wave radar level meter on the elevated pipe, the liquid level in the elevated pipe can be measured more accurately, so as to calculate the flow parameters, and the water vapor in the connecting pipe is discharged through the outlet on the connecting pipe, thereby reducing interference factors and ensuring the accuracy of the measurement result. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Attached Figure 1 It is a schematic diagram of the main structure of an embodiment of the utility model.

[0013] Attached Figure 2 For attachment Figure 1 Schematic diagram of the enlarged structure of the guided wave radar level gauge and elevated pipe.

[0014] Attached Figure 3 It is a structural schematic diagram of the side face plate being lifted up to seal the connecting pipe when the pipe is full of drilling fluid.

[0015] The codes in the attached drawings are: 1 is a buffer tank, 2 is an elevated pipe, 3 is a guided wave radar level gauge, 4 is a connecting pipe, 5 is a connecting pipe, 6 is an outlet, 7 is a screen pipe, 8 is a measuring plate, 9 is a float, and 10 is a flange. DETAILED DESCRIPTION

[0016] The present invention is not limited by the following embodiments, and specific implementation methods can be determined according to the technical solution of the present invention and actual conditions.

[0017] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached manual. Figure 1 The positional relationships such as front, back, top, bottom, left, and right are described according to the layout directions of the drawings in the specification.

[0018] The present invention is further described below in conjunction with the embodiments and drawings:

[0019] Embodiment 1: As attached Figure 1 , 2 As shown in , 3, the radar-type outlet drilling fluid flow monitoring device includes a buffer tank, an elevated pipe, and a guided wave radar level meter. The buffer tank is connected to the elevated pipe, a connecting pipe connected to the elevated pipe is installed on the upper side of the elevated pipe, a connecting pipe is installed on the connecting pipe, an outlet that passes through the inside and the outside is provided on the connecting pipe, and a guided wave radar level meter is installed on the upper end of the connecting pipe.

[0020] The drilling fluid flows from the elevated pipe to the buffer tank. The guided wave radar level meter can measure the liquid level in the elevated pipe through the connecting pipe, thereby obtaining the flow rate for overflow monitoring. At the same time, in order to avoid the interference of water vapor during measurement, several outlets can be set on the connecting pipe. The outlets are oblong holes that can discharge water vapor. Therefore, the measurement results are more accurate, which can overcome the shortcomings of mechanical failure and large liquid level fluctuations when ultrasonic sensors can only be installed on the buffer tank during measurement, and solve the problem of flow data distortion.

[0021] The above radar-type outlet drilling fluid flow monitoring device can be further optimized and / or improved according to actual needs:

[0022] Embodiment 2: As attached Figure 2 , 3 As shown, it also includes a screen tube, a measuring plate and a floating ball. The connecting pipe is provided with a screen tube, the lower end of the screen tube is located in the elevated pipe, a plurality of flow holes are provided along the circumference of the screen tube, the upper part of the floating ball is located in the connecting pipe, and the upper side of the floating ball is provided with a measuring plate located in the connecting pipe.

[0023] The guided wave radar level meter directly measures the position of the plate during detection, thereby determining the liquid level in the elevated pipe. Setting the measuring plate can greatly overcome the problem of drilling fluid level fluctuations.

[0024] Embodiment 3: As attached Figure 2 , 3 As shown, the flow holes at the top of the screen are small and the flow holes at the bottom are large. The flow rate at the bottom of the screen is large, so a larger flow hole is set to enhance the flowability.

[0025] Embodiment 4: As attached Figure 1 , 2 As shown in Figure 3, the connecting pipe and the connecting pipe are connected by flanges. The flange connection is convenient for disassembly and maintenance.

[0026] Embodiment 5: As attached Figure 1 , 2 As shown in 3, it also includes a sealing rubber ring, and a sealing rubber ring with an inner diameter smaller than the inner diameter of the flange is provided between the two flanges. By providing the sealing rubber ring, when the elevated pipe is full, the float will lift the measuring plate to form a seal with the sealing rubber ring to prevent the drilling fluid from spraying out, and the sealing effect is better.

[0027] Embodiment 6: As attached Figure 1 As shown in the figure, a guided wave radar level meter and a connecting pipe are installed on the buffer tank. This arrangement can directly measure the liquid level of the buffer tank.

[0028] The above technical features constitute the embodiments of the present utility model, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

Claims

1. A radar-type outlet drilling fluid flow monitoring device, characterized in that It includes a buffer tank, an elevated pipe, and a guided wave radar level gauge. The buffer tank is connected to the elevated pipe, a connecting pipe connected to the elevated pipe is installed on the upper side of the elevated pipe, a connecting pipe is installed on the connecting pipe, an outlet that passes through the inside and the outside is provided on the connecting pipe, and a guided wave radar level gauge is installed on the upper end of the connecting pipe.

2. The radar outlet drilling fluid flow monitoring device according to claim 1 is characterized in that It also includes a screen tube, a measuring plate and a floating ball. The connecting pipe is provided with a screen tube, the lower end of the screen tube is located in the elevated pipe, a plurality of flow holes are provided along the circumference of the screen tube, the upper part of the floating ball is located in the connecting pipe, and the upper side of the floating ball is provided with a measuring plate located in the connecting pipe.

3. The radar outlet drilling fluid flow monitoring device according to claim 2 is characterized in that The flow holes at the top of the screen tube are small, while the flow holes at the bottom of the screen tube are large.

4. The radar outlet drilling fluid flow monitoring device according to claim 2 or 3, characterized in that The connecting pipe and the connecting pipe are connected through flanges.

5. The radar outlet drilling fluid flow monitoring device according to claim 4 is characterized in that It also includes a sealing rubber ring, and a sealing rubber ring with an inner diameter smaller than the inner diameter of the flange is arranged between the two flanges.

6. The radar outlet drilling fluid flow monitoring device according to claim 1, 2, 3 or 5, characterized in that A guided wave radar level gauge and connecting pipe are installed on the buffer tank.

7. The radar outlet drilling fluid flow monitoring device according to claim 4 is characterized in that A guided wave radar level gauge and connecting pipe are installed on the buffer tank.

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