Drilling fluid on-line monitoring equipment

Abstract

The utility model relates to the technical field of petroleum drilling and production, in particular to drilling fluid on-line monitoring equipment which comprises a surge tank, a manual three-way ball valve, an anti-explosion pneumatic ball valve, an anti-explosion pressure transmitter, an overflow chamber, a drain pipe and an anti-explosion temperature transmitter. Fluid is pumped by a pump and guided into a surge tank, temperature measurement is carried out through an anti-explosion temperature transmitter, real-time temperature data are output, high-temperature alarm is carried out through linkage with an anti-explosion pneumatic ball valve, flow adjustment is carried out on the fluid through a manual three-way ball valve, and the fluid continuously flows upwards to an overflow port through the anti-explosion pneumatic ball valve and then overflows into an overflow chamber. And during measurement, the explosion-proof pneumatic ball valve is closed, the fluid in a measurement area is static, the output pressure is measured through the explosion-proof pressure transmitter, the density of the output fluid is calculated by adopting a formula, and the equipment can detect the fluid in real time and give a high-temperature alarm, is rapid in detection and high in efficiency, and is suitable for large-scale popularization and application. The device is suitable for various complex working conditions and fluids.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of oil drilling and exploitation, especially to a drilling fluid on-line monitoring equipment. BACKGROUND

[0002] Drilling fluid is a variety of circulating fluids in the drilling process to meet the needs of drilling work. According to the composition, it can be divided into water, mud, clay-free flushing fluid, emulsion, foam and compressed air.

[0003] The existing fluid density measurement methods include weighing type, resonant tuning fork type and differential pressure type, but the weighing type has fixed volume and weighing measurement, which is only suitable for manual measurement. The resonant tuning fork type cannot be applied to drilling fluid density measurement. The differential pressure type uses the pressure difference of different fluid levels to calculate the density through the formula P = pgH.

[0004] However, the fluid density detection products on the current market usually only have pressure or differential pressure sensors without other tools and operation software. The time required from sampling to the final output of measurement data is about 1 hour, the detection time is relatively long, and the detection efficiency is relatively low. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a drilling fluid on-line monitoring equipment to solve the problems of long detection time and low detection efficiency of the existing fluid density detection products.

[0006] To achieve the above-mentioned purpose, the utility model provides a drilling fluid on-line monitoring equipment, which comprises a pressure stabilizing tank, a manual three-way ball valve, an explosion-proof pneumatic ball valve, an explosion-proof pressure transmitter, an overflow chamber, a liquid discharge pipe and an explosion-proof temperature transmitter. The pressure stabilizing tank is in communication with the manual three-way ball valve and located on one side of the manual three-way ball valve. The explosion-proof temperature transmitter is in communication with the pressure stabilizing tank and located on one side of the pressure stabilizing tank. The explosion-proof pneumatic ball valve is in communication with the manual three-way ball valve and located on the side of the manual three-way ball valve away from the pressure stabilizing tank. The explosion-proof pressure transmitter is in communication with the manual three-way ball valve and located on the side of the manual three-way ball valve away from the pressure stabilizing tank. The overflow chamber is in communication with the explosion-proof pressure transmitter and located on the side of the explosion-proof pressure transmitter away from the explosion-proof pneumatic ball valve. The overflow chamber has an overflow port located in the overflow chamber. The liquid discharge pipe is in communication with the overflow chamber and located on one side of the overflow chamber.

[0007] The explosion-proof pressure transmitter comprises an explosion-proof pressure transmitter body and a clamp. The explosion-proof pressure transmitter body is in communication with the explosion-proof pneumatic ball valve and located on one side of the explosion-proof pneumatic ball valve. The clamp is arranged on one side of the explosion-proof pressure transmitter body.

[0008] The manual three-way ball valve comprises a three-way ball valve body and a wrench, the three-way ball valve body is communicated with the pressure stabilizing tank and is located at one side of the pressure stabilizing tank, and the wrench is rotationally arranged on the top of the three-way ball valve body.

[0009] The pressure stabilizing tank comprises a pressure stabilizing tank body and a liquid inlet pipe, the pressure stabilizing tank body is communicated with the three-way ball valve body and is located at one side of the three-way ball valve body, and the liquid inlet pipe is communicated with the pressure stabilizing tank body and is located at one side of the pressure stabilizing tank body.

[0010] The liquid discharge pipe is provided with a liquid discharge opening, and the liquid discharge opening is located at the side of the liquid discharge pipe away from the overflow chamber.

[0011] The utility model discloses a kind of drilling fluid online monitoring equipment, the explosion-proof pneumatic ball valve is connected with pipeline by DN25 screw thread, explosion-proof electrical interface can be used for automation control, ball valve itself is anticorrosive, not easy to block, the overflow chamber is connected with pipeline by DN50 screw thread, atmosphere is communicated, ensure that the liquid level height of final to be measured fluid is stable, no bubble, the liquid discharge pipe is connected with the overflow chamber by DN50 screw thread, vertically downward, ensure that high viscosity fluid can also be smoothly discharged, will not leak backflow, working principle is as follows: fluid is pumped by product external, and import the pressure stabilizing tank, make fluid flow whole more stable, fluid is measured temperature in the pressure stabilizing tank by the explosion-proof temperature transmitter, output real-time temperature data to carry out remote monitoring, and link the explosion-proof pneumatic ball valve (close) and carry out high temperature alarm, to protect the explosion-proof pressure transmitter, fluid passes through the manual three-way ball valve, and according to different working conditions, carry out flow regulation;Fluid passes through the explosion-proof pneumatic ball valve (open), continuously flows upwards, to the overflow port, then overflow into the overflow chamber, finally discharged by the liquid discharge pipe and return to sampling position, complete the whole fluid circulation when not measured, when measuring, close the explosion-proof pneumatic ball valve, measurement area fluid is stationary, measured output pressure by the explosion-proof pressure transmitter, using P=ρgH formula calculates output fluid density, this equipment can detect fluid in real time, and carry out high temperature alarm, detection is fast, efficiency is high, can be applicable to various complex working conditions, fluid, solve the problem that existing fluid density detection product, detection time is relatively long, detection efficiency is relatively low. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description.

[0013] Fig. 1 is the front view of the utility model kind drilling fluid online monitoring equipment.

[0014] Fig. 2 is the structure schematic view of the utility model kind drilling fluid online monitoring equipment.

[0015] In the figure: 1 - pressure stabilizing tank, 2 - manual three-way ball valve, 3 - explosion-proof pneumatic ball valve, 4 - explosion-proof pressure transmitter, 5 - overflow chamber, 6 - liquid discharge pipe, 7 - overflow port, 8 - explosion-proof temperature transmitter, 9 - explosion-proof pressure transmitter body, 10 - clamp, 11 - three-way ball valve body, 12 - wrench, 13 - pressure stabilizing tank body, 14 - liquid inlet pipe, 15 - liquid discharge port. DETAILED DESCRIPTION

[0016] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0017] Please refer to Figs. 1-2 The present application provides a kind of drilling fluid online monitoring equipment, including pressure stabilizing tank 1, manual three-way ball valve 2, explosion-proof pneumatic ball valve 3, explosion-proof pressure transmitter 4, overflow chamber 5, liquid discharge pipe 6 and explosion-proof temperature transmitter 8;The pressure stabilizing tank 1 with the manual three-way ball valve 2 communication, and located in the manual three-way ball valve 2 side, the explosion-proof temperature transmitter 8 with the pressure stabilizing tank 1 communication, and located in the pressure stabilizing tank 1 side, the explosion-proof pneumatic ball valve 3 with the manual three-way ball valve 2 communication, and located in the manual three-way ball valve 2 side away from the pressure stabilizing tank 1, the explosion-proof pressure transmitter 4 with the manual three-way ball valve 2 communication, and located in the manual three-way ball valve 2 side away from the pressure stabilizing tank 1, the overflow chamber 5 with the explosion-proof pressure transmitter 4 communication, and located in the explosion-proof pressure transmitter 4 side away from the explosion-proof pneumatic ball valve 3, the overflow chamber 5 has overflow port 7, the overflow port 7 is located in the overflow chamber 5, the liquid discharge pipe 6 with the overflow chamber 5 communication, and located in the overflow chamber 5 side.

[0018] In the embodiment, the explosion-proof pneumatic ball valve 3 is connected with the pipeline through DN25 thread, the explosion-proof electrical interface can be used for automatic control, the ball valve itself is corrosion-resistant and not easy to be blocked, the overflow chamber 5 is connected with the pipeline through DN50 thread and is connected with the atmosphere to ensure that the liquid level of the final fluid to be measured is stable and bubble-free, the drain pipe 6 is connected with the overflow chamber 5 through DN50 thread and is vertically downward to ensure that high-viscosity fluid can also be smoothly discharged without leakage and backflow, and the working principle is as follows: the fluid is pumped outside the product and introduced into the pressure stabilizing tank 1 to make the fluid flow more stable, the fluid is measured in temperature by the explosion-proof temperature transmitter 8 in the pressure stabilizing tank 1, real-time temperature data are output for remote monitoring, the explosion-proof pneumatic ball valve 3 is closed for high-temperature alarm to protect the explosion-proof pressure transmitter 4, the fluid passes through the manual three-way ball valve 2 and is adjusted in flow according to different working conditions, the fluid continuously flows upward through the explosion-proof pneumatic ball valve 3 (opened) to the overflow port 7, then overflows into the overflow chamber 5, and finally is discharged back to the sampling position through the drain pipe 6 to complete the entire fluid circulation when not measured, when measured, the explosion-proof pneumatic ball valve 3 is closed, the fluid in the measurement area is static, the pressure is measured by the explosion-proof pressure transmitter 4, and the output fluid density can be calculated by using the formula P = pgH. The device can detect the fluid in real time and alarm at high temperature, is fast in detection, high in efficiency, can be suitable for various complex working conditions and fluids, and solves the problems of long detection time and low detection efficiency of existing fluid density detection products.

[0019] Further, the explosion-proof pressure transmitter 4 includes an explosion-proof pressure transmitter body 9 and a clamp 10, the explosion-proof pressure transmitter 4 is in communication with the explosion-proof pneumatic ball valve 3 and is located on one side of the explosion-proof pneumatic ball valve 3, and the clamp 10 is arranged on one side of the explosion-proof pressure transmitter body 9.

[0020] In the embodiment, the explosion-proof pressure transmitter body 9 has three and is a mature product on the market, is explosion-proof, resistant to 100 DEG C high temperature, flat film sanitary type, 0.2% F.S. precision, does not block and does not need to be cleaned, is connected on the pipeline through the clamp 10, and is used for measuring fluid pressure.

[0021] Further, the manual three-way ball valve 2 includes a three-way ball valve body 11 and a wrench 12, the three-way ball valve body 11 is in communication with the pressure stabilizing tank 1 and is located on one side of the pressure stabilizing tank 1, and the wrench 12 is rotationally arranged on the top of the three-way ball valve body 11.

[0022] In the embodiment, the three-way ball valve body 11 is connected with the transportation pipeline through DN25 thread, the first interface is for liquid inlet, the second interface is for vertical downward liquid and gas discharge, and most of the bubbles in the sample fluid are discharged, the third interface is connected with the explosion-proof pneumatic ball valve 3 through a pipeline, the flow size of the third interface can be adjusted, the measurement frequency is indirectly adjusted, the ball valve itself is corrosion-resistant and not easy to be blocked, and the fluid pressure is released during measurement (the explosion-proof pneumatic ball valve 3 is closed), so that the fluid does not continuously impact the explosion-proof pneumatic ball valve 3, and the wrench 12 is used for manual adjustment of the flow size of the third interface by workers.

[0023] Further, the pressure stabilizing tank 1 includes a pressure stabilizing tank body 13 and a liquid inlet pipe 14, the pressure stabilizing tank body 13 is in communication with the three-way ball valve body 11 and located on one side of the three-way ball valve body 11, and the liquid inlet pipe 14 is in communication with the pressure stabilizing tank body 13 and located on one side of the pressure stabilizing tank body 13.

[0024] In the embodiment, the capacity of the pressure stabilizing tank body 13 is 4L, the liquid is inlet from the lower side and outlet from the lower side, and the pressure stabilizing tank body 13 is connected with an external pump through DN25 thread, so that no matter what form of pump is used at the front end of the product and what type of fluid is extracted, the overall fluid circulation pressure and flow rate of the product are more stable, and the liquid inlet pipe 14 is in communication with an external air pump and used for guiding fluid into the pressure stabilizing tank body 13.

[0025] Further, the liquid discharge pipe 6 has a liquid discharge port 15, and the liquid discharge port 15 is located on the side of the liquid discharge pipe 6 away from the overflow chamber 5.

[0026] In the embodiment, the liquid discharge pipe 6 is used for discharging fluid from the liquid discharge pipe 6, so that the fluid returns to the sampling position.

[0027] The above only discloses a preferred embodiment of the drilling fluid online monitoring device, and cannot limit the scope of the application, and those skilled in the art can understand that the above embodiment can be implemented by all or part of the processes, and equivalent changes can be made according to the claims of the application, which still belongs to the scope covered by the application.

Claims

1. A drilling fluid online monitoring apparatus, characterized by ； The device comprises a pressure stabilizer, a manual three-way ball valve, an explosion-proof pneumatic ball valve, an explosion-proof pressure transmitter, an overflow chamber, a liquid discharge pipe and an explosion-proof temperature transmitter. The pressure stabilizer is in communication with the manual three-way ball valve and located at one side of the manual three-way ball valve; the explosion-proof temperature transmitter is in communication with the pressure stabilizer and located at one side of the pressure stabilizer; the explosion-proof pneumatic ball valve is in communication with the manual three-way ball valve and located at one side of the manual three-way ball valve away from the pressure stabilizer; the explosion-proof pressure transmitter is in communication with the manual three-way ball valve and located at one side of the manual three-way ball valve away from the pressure stabilizer; the overflow chamber is in communication with the explosion-proof pressure transmitter and located at one side of the explosion-proof pressure transmitter away from the explosion-proof pneumatic ball valve; the overflow chamber has an overflow port located in the overflow chamber; the liquid discharge pipe is in communication with the overflow chamber and located at one side of the overflow chamber.

2. The drilling fluid online monitoring device according to claim 1, characterized in that: The explosion-proof pressure transmitter comprises an explosion-proof pressure transmitter body and a clamp, the explosion-proof pressure transmitter body is in communication with the explosion-proof pneumatic ball valve and located at one side of the explosion-proof pneumatic ball valve, and the clamp is arranged at one side of the explosion-proof pressure transmitter body.

3. The drilling fluid on-line monitoring apparatus of claim 1, wherein ； The manual three-way ball valve comprises a three-way ball valve body and a wrench, the three-way ball valve body is in communication with the pressure stabilizer and located at one side of the pressure stabilizer, and the wrench is rotatably arranged at the top of the three-way ball valve body.

4. The drilling fluid on-line monitoring apparatus of claim 3, wherein ； The pressure stabilizer comprises a pressure stabilizer body and a liquid inlet pipe, the pressure stabilizer body is in communication with the three-way ball valve body and located at one side of the three-way ball valve body, and the liquid inlet pipe is in communication with the pressure stabilizer body and located at one side of the pressure stabilizer body.

5. The drilling fluid on-line monitoring apparatus of claim 1, wherein ； The liquid discharge pipe has a liquid discharge port located at one side of the liquid discharge pipe away from the overflow chamber.

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