A new quantitative degasser

Abstract

The application discloses a novel quantitative degassing device, which comprises a support, a plurality of fixed plates, a mounting plate, a plurality of mounting holes and a drilling fluid outlet buffer mechanism, the support is in a hollow cuboid structure, the plurality of fixed plates are in a cuboid structure and are oppositely arranged on the left and right sides of the top of the support, the mounting plate is arranged on the bottom of the drilling fluid outlet buffer mechanism and corresponds to the position between each left and right group of fixed plates, the plurality of mounting holes are uniformly arranged on the fixed plates and the mounting plate, the drilling fluid outlet buffer mechanism is arranged on the top of the support, and the support, the plurality of fixed plates, the mounting plate, the plurality of mounting holes and the drilling fluid outlet buffer mechanism are all located in the inside of the buffer tank. The scheme solves the performance defects of the degassing device, improves the degassing efficiency and quantification, optimizes the sensor installation, improves the monitoring convenience and space utilization, enhances the installation adaptability and working condition compatibility, improves the safety and system compatibility, has a high cost performance, and is low in cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil drilling measurement monitoring, in particular to a novel quantitative degassing device. BACKGROUND

[0002] In the drilling process, the drilling fluid outlet buffer tank is the first ground tank into which the drilling fluid from the wellhead annulus returns. The monitoring at the drilling fluid outlet buffer tank is the "sentinel" of the drilling operation. By comprehensively analyzing the real-time parameters such as return flow, density, gas content (total and components), temperature, liquid level / volume change, and conductivity and their change trends, the drilling personnel can: detect well kick (overflow) and lost circulation at the earliest stage; warn potential well control risks and take safety measures such as shutting down the well in time; identify the properties of formation fluids (oil and gas show, formation water); monitor toxic gases such as hydrogen sulfide to ensure personnel safety; and evaluate the changes in drilling fluid performance and downhole conditions. The measured parameters are usually integrated into a real-time drilling parameter monitoring system, which is displayed, recorded, alarmed, and analyzed in the driller's house and the geological engineering house, and is an indispensable part of modern safe and efficient drilling.

[0003] Based on the above application requirements, a drilling fluid degassing device and various types of outlet measurement sensors are installed on the buffer tank. The various types of degassing devices on the market have low degassing efficiency; are not quantitative (influenced by uncertainty of flow, temperature, pressure, etc.); are not convenient to install (heavy equipment, difficult to install and adjust); are not convenient to maintain (need to be cleaned, sand clogging); and are expensive (quantitative degassing device, relatively complex design function). Various detection sensors are installed dispersedly, occupy buffer tank space, and are difficult to maintain.

[0004] Therefore, a solution is needed. SUMMARY

[0005] (I) Technical problems solved

[0006] In view of the deficiencies of the prior art, the present application provides a novel quantitative degassing device to solve the problems raised in the background.

[0007] (II) Technical solutions

[0008] To achieve the above purposes, the present application is implemented by the following technical solutions:

[0009] A novel quantitative degasser comprises a bracket, a plurality of fixing plates, a mounting plate, a plurality of mounting holes, and a drilling fluid outlet buffer mechanism. The bracket is a hollow rectangular parallelepiped structure. The plurality of fixing plates are rectangular parallelepiped structures and are arranged on the left and right sides of the top of the bracket in opposing relation. The mounting plates are arranged at the bottom of the drilling fluid outlet buffer mechanism corresponding to the positions between each group of fixing plates on the left and right sides. The plurality of mounting holes are evenly arranged on the fixing plates and the mounting plates. The drilling fluid outlet buffer mechanism is arranged on the top of the bracket. The bracket, the plurality of fixing plates, the mounting plate, the plurality of mounting holes, and the drilling fluid outlet buffer mechanism are all located inside a buffer tank.

[0010] The drilling fluid outlet buffer mechanism includes a buffer box 1, a buffer box 2, a unloading plate, a buffer tank 2, a vertical partition, an air supply port, a plurality of flow holes, a buffer tank 3, a gas outlet and a drain port. The buffer box 1 and the buffer box 2 are arranged in a left-right structure. The unloading plate is arranged at the left end of the top of the buffer box 2 and is connected to the buffer box 1. The buffer tank 2 is arranged on the left side of the interior of the buffer box 2. The vertical partition is arranged on the right side of the buffer tank 2. The buffer tank 3 is arranged on the right side of the vertical partition. The air supply port is arranged at the top of the interior of the vertical partition and is located in the rear half of the vertical partition. A plurality of flow holes are arranged equidistantly from front to back at the bottom of the interior of the vertical partition. The gas outlet is arranged at the right end of the buffer box 2 corresponding to the position of the air supply port. The drain port is arranged at the right end of the buffer box 2 corresponding to the position of the flow hole in the middle of the front and rear directions.

[0011] Preferably, the buffer box 1 and the buffer box 2 are both rectangular structures, the front-to-back length of the buffer box 1 is equal to the front-to-back length of the buffer box 2, the width of the buffer box 2 is greater than the width of the buffer box 1, the unloading plate is a hollow fan-shaped structure and the external area is equal to one-fourth of the external area of ​​a cylinder, the vertical partition is a rectangular structure, the buffer box 1, the buffer box 2, the unloading plate and the vertical partition are integrally formed, an exhaust pipe is provided at the right end of the gas outlet, an exhaust flow meter is provided on the exhaust pipe, and a drain pipe is provided at the right end of the drain port.

[0012] Preferably, an overflow pipe, a buffer tank one, a buffer overflow port and a sand removal adjustment plate are provided inside and outside the buffer box one. The overflow pipe is located at the top of the buffer box one and the tube body extends to the left. The buffer tank one is located inside the buffer box one. The bottom of the buffer tank one is an inclined structure and is inclined from the upper rear end to the lower front end. The buffer overflow port is a rectangular structure and is located at the top of the right end of the buffer box one and at the left end of the unloading plate. The sand removal adjustment plate is located at the bottom of the front end of the buffer tank one and is arranged through the left end of the buffer box one.

[0013] Preferably, the inside and outside of the buffer tank 2 are provided with tempered glass, an air supply pipe, a sensor assembly, connecting pipe 1, connecting pipe 2, connecting pipe 3, connecting pipe 4, a density sensor, a temperature sensor, a conductivity sensor, an ultrasonic sensor, a fixing column and a lighting camera. The position of the tempered glass corresponding to the buffer tank 2 is located at the top of the buffer box 2. The air supply pipe passes through the top of the buffer box 2 and extends into the box and is located inside the air supply port. An air supply flow meter is provided on the air supply pipe. The sensor assembly is located at the front end of the air supply pipe and at the top of the buffer box 2. The connecting pipe 1 is located at the top of the buffer box 2. At the bottom of the sensor assembly, the left end of the connecting pipe one is provided with a connecting pipe five with a bent structure, and the end of the connecting pipe five is provided with a viscosity sensor. The connecting pipe two and the connecting pipe three are respectively located in front of and behind the connecting pipe one and are both connected to the connecting pipe one through a bent structure. The connecting pipe four is located at the top of the sensor assembly. The density sensor, temperature sensor, conductivity sensor and ultrasonic sensor are respectively located at the ends of the connecting pipes one, two, three and four. The fixing column is located at the front end of the sensor assembly and at the top of the buffer box two. The lighting camera is located at the top of the fixing column.

[0014] Preferably, the tempered glass has a rectangular structure, the air supply pipe has a Z-shaped structure and is located as a whole behind the overflow pipe, and the connecting pipe one, connecting pipe two, connecting pipe three, connecting pipe four, connecting pipe five, density sensor, temperature sensor, conductivity sensor, ultrasonic sensor and viscosity sensor are all located inside the buffer tank two.

[0015] Preferably, the flow hole has a trumpet-shaped structure and the circumference of the left end of the flow hole is smaller than the circumference of the right end, and the height of the center of the left end of the flow hole is consistent with the height of the center of the right end.

[0016] Preferably, a stirring motor, a diaphragm, an air chamber, a drilling fluid chamber, a mixer sealing groove, a ventilation mechanism, a drive shaft and a dual-axis planetary stirring device are provided inside and outside the buffer tank three. The position of the stirring motor corresponding to the buffer tank three is located at the top of the buffer box two. The diaphragm is located laterally at two-thirds of the internal height of the buffer tank three. The air chamber and the drilling fluid chamber are respectively located at the upper and lower ends of the diaphragm. The mixer sealing groove is located in the center of the diaphragm. The ventilation mechanism is equidistantly distributed from front to back on the front and back sides of the mixer sealing groove and is located inside the diaphragm. The drive shaft is located at the bottom of the stirring motor and inside the air chamber. The dual-axis planetary stirring device is located at the bottom of the drive shaft and inside and at the bottom of the mixer sealing groove.

[0017] Preferably, the left and right sides of the bottom of the transverse partition are both inclined and inclined from the lower position of the left and right ends of the transverse partition to the upper position of the middle, and the inclination of the left and right sides of the bottom of the transverse partition to the middle stops at the left and right ends of the mixer sealing groove, and the transverse partition and the buffer box are integrally formed.

[0018] Preferably, the ventilation mechanism includes a ventilation groove, a liquid partition plate and a plurality of support bars, the liquid partition plate is arranged inside the ventilation groove, and the plurality of support bars are arranged in a cross-shaped structure between the liquid partition plate and the ventilation groove.

[0019] Preferably, the ventilation groove has a conical structure and the circumference of the bottom of the ventilation groove is smaller than the circumference of the top, the liquid partition plate has a conical structure and the circumference of the bottom of the liquid partition plate is larger than the circumference of the top, and the circumference of the bottom of the liquid partition plate is also larger than the circumference of the bottom of the ventilation groove and the circumference of the middle of the ventilation groove. The top of the liquid partition plate and the top of the ventilation groove are located in the same plane, and there is a gap between the liquid partition plate and the ventilation groove. The support bar has a cylindrical structure, and the ventilation groove, the liquid partition plate and the plurality of support bars are integrally formed.

[0020] (3) Beneficial effects

[0021] The present invention provides a novel quantitative degasser with the following beneficial effects:

[0022] 1. This solution solves the problem of degasser performance defects through a dual-shaft planetary stirring design, a three-stage buffer tank "natural flow introduction" design, and a modular design, thereby improving degassing efficiency and quantitativeness.

[0023] 2. This solution also optimizes sensor installation through the integrated design of each sensor, improving monitoring convenience and space utilization.

[0024] 3. The bracket and the drilling fluid outlet buffer mechanism can be quickly fixed by bolts and nuts, and the constant liquid level design of the three-level buffer tank realizes the quantitative function of the degasser drilling fluid.

[0025] 4. The motor has high explosion-proof and protection levels, and the device can be used with mud loggers or other brand equipment to improve safety and system compatibility.

[0026] 5. Real-time and accurate measurement of gas flow at the degasser gas inlet and outlet is beneficial to the consistency correction of engineering gas measurement data and the authenticity evaluation of the return formation reservoir.

[0027] 6. Compared with traditional quantitative degassers, the present invention reduces manufacturing costs through simplified structure and modular design, while reducing manual maintenance costs, achieving high-performance monitoring at low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of the present invention located in a buffer tank;

[0029] Figure 2 This is a schematic diagram of the upper and lower split structure of the present invention;

[0030] Figure 3 This is a detailed structural diagram of the drilling fluid outlet buffer mechanism of the present invention;

[0031] Figure 4 This is a schematic diagram of the internal structure of the drilling fluid outlet buffer mechanism of the present invention;

[0032] Figure 5 This is a schematic diagram of the internal structure of the buffer tank of the present invention;

[0033] Figure 6 A schematic diagram of the sensor assembly and its bottom structure of the present invention;

[0034] Figure 7 Schematic diagram of the ventilation mechanism structure of the present invention;

[0035] Figure 8 Schematic diagram of the flow hole structure of the present invention.

[0036] In the figure, 1- bracket; 2- fixing plate; 3- mounting plate; 4- mounting hole; 5- drilling fluid outlet buffer mechanism; 51- buffer box 1; 511- overflow pipe; 512- buffer tank 1; 513- buffer overflow port; 514- sand removal adjustment plate; 52- buffer box 2; 53- unloading plate; 54- buffer tank 2; 541- tempered glass; 542- air supply pipe; 543- sensor assembly; 544- connecting pipe 1; 5441- connecting pipe 5; 5442- viscosity sensor; 545- connecting pipe 2; 546- connecting pipe 3; 547- connecting pipe 4; 548- density sensor; 549- temperature sensor; 5 410- Conductivity sensor; 5411- Ultrasonic sensor; 5412- Fixed column; 5413- Lighting camera; 55- Vertical partition; 56- Air supply port; 57- Flow hole; 58- Buffer tank three; 581- Mixing motor; 582- Horizontal partition; 583- Air chamber; 584- Drilling fluid chamber; 585- Mixer sealing tank; 586- Ventilation mechanism; 5861- Ventilation tank; 5862- Liquid partition plate; 5863- Support bar; 587- Drive shaft; 588- Double-axis planetary mixing device; 59- Gas outlet; 591- Exhaust pipe; 510- Drain port; 5101- Drain pipe. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] See also Figures 1-8 , an embodiment of the present invention provides a technical solution to achieve this: it includes a bracket 1, several fixed plates 2, a mounting plate 3, several mounting holes 4 and a drilling fluid outlet buffer mechanism 5, the bracket 1 is a hollow rectangular structure, several fixed plates 2 are rectangular structures and are arranged on the left and right sides of the top of the bracket 1, the mounting plates 3 are arranged at the bottom of the drilling fluid outlet buffer mechanism 5 corresponding to the position between each left and right group of several fixed plates 2, several mounting holes 4 are evenly arranged on the several fixed plates 2 and the mounting plates 3, the drilling fluid outlet buffer mechanism 5 is arranged on the top of the bracket 1, and the bracket 1, several fixed plates 2, the mounting plate 3, several mounting holes 4 and the drilling fluid outlet buffer mechanism 5 are all located inside the buffer tank.

[0039] The drilling fluid outlet buffer mechanism 5 includes a buffer box 1 51, a buffer box 2 52, a force unloading plate 53, a buffer tank 2 54, a vertical partition 55, an air supply port 56, a plurality of flow holes 57, a buffer tank 3 58, a gas outlet 59 and a liquid discharge port 510. The buffer box 1 51 and the buffer box 2 52 are arranged in a left-right structure. The force unloading plate 53 is arranged at the left end of the top of the buffer box 2 52 and is connected to the buffer box 1 51. The buffer tank 2 54 is arranged on the left side of the interior of the buffer box 2 52. The vertical partition 55 It is arranged on the right side of buffer tank 2 54, buffer tank 3 58 is arranged on the right side of vertical partition 55, air supply port 56 is arranged at the top of the inside of vertical partition 55 and located in the rear half of vertical partition 55, and several flow holes 57 are arranged at equal distances from front to back at the bottom of the inside of vertical partition 55, the gas outlet 59 is arranged at the right end of buffer box 2 52 corresponding to the position of air supply port 56, and the drain port 510 is arranged at the right end of buffer box 2 52 corresponding to the position of several flow holes 57 centered in the front and rear directions.

[0040] In detail, buffer box 1 51 and buffer box 2 52 are both rectangular structures, the front-to-back length of buffer box 1 51 is equal to the front-to-back length of buffer box 2 52, the width of buffer box 2 52 is larger than the width of buffer box 1 51, the unloading plate 53 is a hollow fan-shaped structure and the external area is equal to one-fourth of the external area of ​​a cylinder, the vertical partition 55 is a rectangular structure, the buffer box 1 51, the buffer box 2 52, the unloading plate 53 and the vertical partition 55 are integrally formed, an exhaust pipe 591 is provided at the right end of the gas outlet 59, an exhaust flow meter 592 (model: Flexim FLUXUS G736) is provided on the exhaust pipe 591, and a drain pipe 5101 is provided at the right end of the drain port 510.

[0041] An overflow pipe 511, a buffer tank 512, a buffer overflow port 513 and a sand removal adjustment plate 514 are provided inside and outside the buffer box 51. The overflow pipe 511 is located at the top of the buffer box 51 and the tube body extends to the left. The buffer tank 512 is located inside the buffer box 51. The bottom of the buffer tank 512 is an inclined structure and is inclined from the upper rear end to the lower front end. The buffer overflow port 513 is a rectangular structure and is located at the top of the right end of the buffer box 51 and at the left end of the unloading plate 53. The sand removal adjustment plate 514 is located at the bottom of the front end of the buffer tank 512 and is arranged through the left end of the buffer box 51.

[0042] The inside and outside of the buffer tank 2 54 are provided with tempered glass 541, air supply pipe 542, sensor assembly 543, connecting pipe 1 544, connecting pipe 2 545, connecting pipe 3 546, connecting pipe 4 547, density sensor 548 (model: 3051SCD), temperature sensor 549 (model: WZP-230), conductivity sensor 5410 (model: Memosens CLL47E), ultrasonic sensor 5411 (model: URC-05LX4), fixing column 5412 and lighting camera 5413 (model: DS-2CD3T47WD- L), the position of the tempered glass 541 corresponding to the buffer tank 2 54 is located at the top of the buffer box 2 52, the air supply pipe 542 passes through the top of the buffer box 2 52 and extends into the box and is located inside the air supply port 56, the air supply pipe 542 is provided with an air supply flow meter 5421 (model: SD5500), the sensor assembly 543 is located at the front end of the air supply pipe 542 and at the top of the buffer box 2 52, the connecting pipe 1 544 is located at the bottom of the sensor assembly 543, the left end of the connecting pipe 1 544 is provided with a connecting pipe 5 5441 with a bent structure, and the end of the connecting pipe 5 5441 is provided with a viscosity sensor 544 2. Connecting pipe 2 545 and connecting pipe 3 546 are respectively located in front of and behind connecting pipe 1 544 and are both connected to connecting pipe 1 544 through a bending structure. Connecting pipe 4 547 is located at the top of the sensor assembly 543. The density sensor 548, temperature sensor 549, conductivity sensor 5410 and ultrasonic sensor 5411 are respectively located at the ends of connecting pipe 1 544, connecting pipe 2 545, connecting pipe 3 546 and connecting pipe 4 547 in a one-to-one correspondence. The fixing column 5412 is located at the front end of the sensor assembly 543 and at the top of buffer box 2 52. The lighting camera 5413 is located at the top of the fixing column 5412.

[0043] The tempered glass 541 has a rectangular structure, the air supply pipe 542 has a Z-shaped structure and is located as a whole behind the overflow pipe 511, and the connecting pipe 1 544, the connecting pipe 2 545, the connecting pipe 3 546, the connecting pipe 4 547, the connecting pipe 5441, the density sensor 548, the temperature sensor 549, the conductivity sensor 5410, the ultrasonic sensor 5411 and the viscosity sensor 5442 are all located inside the buffer tank 2 54.

[0044] The plurality of flow holes 57 are trumpet-shaped structures, and the perimeter of the left end of the plurality of flow holes 57 is smaller than the perimeter of the right end. The height of the center of the left end of the plurality of flow holes 57 is consistent with the height of the center of the right end.

[0045] The inside and outside of the buffer tank three 58 are provided with a stirring motor 581, a diaphragm 582, an air chamber 583, a drilling fluid chamber 584, a mixer sealing groove 585, a ventilation mechanism 586, a drive shaft 587 and a dual-axis planetary stirring device 588. The stirring motor 581 is located at the top of the buffer box two 52 corresponding to the position of the buffer tank three 58. The diaphragm 582 is located laterally at two-thirds of the internal height of the buffer tank three 58. The air chamber 583 and the drilling fluid chamber 584 are respectively located at the upper and lower ends of the diaphragm 582. The mixer sealing groove 585 is located in the center of the diaphragm 582. The ventilation mechanism 586 is equidistantly distributed from front to back on the front and back sides of the mixer sealing groove 585 and is located inside the diaphragm 582. The drive shaft 587 is located at the bottom of the stirring motor 581 and inside the air chamber 583. The dual-axis planetary stirring device 588 is located at the bottom of the drive shaft 587 and inside and at the bottom of the mixer sealing groove 585.

[0046] The left and right sides of the bottom of the transverse partition 582 are both inclined and inclined from the lower left and right ends of the transverse partition 582 to the upper middle position. Moreover, the inclination of the left and right sides of the bottom of the transverse partition 582 toward the middle stops at the left and right ends of the mixer sealing groove 585. The transverse partition 582 and the buffer box 2 52 are integrally formed.

[0047] The ventilation mechanism 586 includes a ventilation groove 5861, a liquid barrier plate 5862 and a plurality of support bars 5863. The liquid barrier plate 5862 is arranged inside the ventilation groove 5861, and the plurality of support bars 5863 are arranged in a cross-shaped structure between the liquid barrier plate 5862 and the ventilation groove 5861.

[0048] The ventilation groove 5861 has a conical structure and the circumference of the bottom of the ventilation groove 5861 is smaller than the circumference of the top. The liquid partition plate 5862 has a conical structure and the circumference of the bottom of the liquid partition plate 5862 is larger than the circumference of the top. The circumference of the bottom of the liquid partition plate 5862 is also larger than the circumference of the bottom of the ventilation groove 5861 and the circumference of the middle of the ventilation groove 5861. The top of the liquid partition plate 5862 and the top of the ventilation groove 5861 are located in the same plane. There is a gap between the liquid partition plate 5862 and the ventilation groove 5861. The several support bars 5863 have a cylindrical structure. The ventilation groove 5861, the liquid partition plate 5862 and the several support bars 5863 are formed as one piece.

[0049] To explain the above content: This solution comprehensively solves the technical pain points of existing drilling fluid monitoring devices through structural innovation and functional integration, and provides a reliable intelligent monitoring solution for safe and efficient oil drilling operations.

[0050] Improved degassing efficiency: The dual-shaft planetary mixing design enhances drilling fluid shear and mixing through revolution and rotation, significantly improving the separation efficiency of free gas and dissolved gas. It is suitable for different working conditions (tripping out, running in, circulating drilling fluid, etc.), solving the low efficiency problem of traditional degassers.

[0051] Achieve quantitative degassing: The "natural flow introduction" design of the three-stage buffer tank ensures constant liquid levels in buffer tank two 54 and buffer tank three 58, ensuring quantitative drilling fluid flow. Combined with flow monitoring at the gas outlet 59 and air supply port 56, a stable degassing volume (not less than 1000mL / min) is achieved, solving the non-quantitative problem of traditional degassers caused by flow / temperature / pressure fluctuations.

[0052] Reduce maintenance costs: modular design (weight < 30kg), sand removal adjustment plate 514 reduces sand clogging, no need to frequently adjust the degasser height, easy maintenance; the main body is made of stainless steel / anti-corrosion coating, resistant to With high salt environment, extend service life.

[0053] Integrated design: Temperature, density, conductivity, ultrasonic, viscosity sensors and lighting camera 5413 are integrated inside and outside the buffer tank 2 54, solving the problems of traditional sensors being installed separately, taking up space and being difficult to repair. In addition, the miniaturized modules are easy to replace individually, reducing maintenance costs.

[0054] Improved measurement accuracy: The sensor installation position is optimized for the buffer tank flow field (for example, the ultrasonic sensor avoids the buffer tank and directly measures the liquid level in the buffer tank), reducing the impact of drilling fluid disturbances and achieving higher data accuracy (for example, density measurement range is 0-3g / cm³, temperature 0-125°C).

[0055] Strong adaptability: The bracket 1 and several fixing plates 2 are quickly fixed through several mounting holes 4. It is suitable for a buffer tank of about 1 cubic meter (1.5×1.2×0.5m) and is compatible with the upper and lower outlets of the overflow pipe (Φ30).

[0056] Universal working conditions: The constant liquid level design of the three-stage buffer tank adapts to flow changes under different working conditions such as drilling, drilling, and circulation, and can work stably without adjusting the structure.

[0057] Safe and reliable: The motor has an explosion-proof rating of Exd IIBT4Gb and an IP65 protection level, making it suitable for use in flammable and explosive drilling environments. The sealed chamber and explosion-proof design ensure safe operation, making it particularly suitable for monitoring toxic gases such as hydrogen sulfide.

[0058] Expandable and compatible: It supports integration with mud loggers or other brand equipment, has a flexible data interface (wired / wireless transmission), and can be integrated into existing drilling parameter monitoring systems to meet the needs of modern drilling intelligence.

[0059] Low cost and high cost performance: Compared with traditional quantitative degassers, the present invention reduces manufacturing costs through simplified structure (such as the natural diversion of the three-stage buffer tank instead of complex control devices) and modular design, while reducing manual maintenance costs, thereby achieving high-performance monitoring at low cost.

[0060] Working Principle: Drilling fluid pretreatment and buffering: Drilling fluid flows from the overflow pipe (Ø30 mm) into the buffer tank 51, where it is slowed down by the force-removing plate 53 to reduce impact. The bottom of the buffer tank 512 within the buffer tank 51 is tilted (higher at the rear end and lower at the front end). This, combined with the sand removal regulating plate 514 on the side, intercepts sand particles in the drilling fluid. The sand removal regulating plate 514 controls the flow rate, allowing excess drilling fluid to overflow through the buffer overflow port 513, achieving initial sand removal and stabilizing the flow rate.

[0061] Parameter detection: The pre-treated drilling fluid enters buffer tank 2 54 through the connecting structure between buffer tank 1 51 and buffer tank 2 52. Buffer tank 2 54 integrates a temperature sensor 549, a density sensor 548, a conductivity sensor 5410, an ultrasonic sensor 5411, and a viscosity sensor 5442 (installed through connecting pipes 1 to 5) to monitor the temperature (0-125°C), density (0-3g / cm³), conductivity (0-320mS / cm), and viscosity (1-300mS / cm) of the drilling fluid in real time. ).

[0062] The ultrasonic sensor 5411 is located relatively high inside the buffer tank 54. The structural design ensures that it can measure the liquid level height of the buffer tank (0.3~3m). The lighting camera 5413 (also known as an integrated video monitoring and lighting device) captures the drilling fluid status in real time to assist in monitoring.

[0063] Quantitative diversion and parameter transfer: Buffer tank 2 54 and buffer tank 3 58 are separated by a vertical partition 55. Several flow holes 57 at the bottom of the vertical partition 55 (the circumference of the left end is smaller than that of the right end) allow the drilling fluid to flow into buffer tank 3 58 at a uniform speed while preventing sand from clogging the buffer tank. The overflow liquid level height of buffer tank 2 54 and buffer tank 3 58 is constant, ensuring a stable flow rate of drilling fluid entering buffer tank 3 58 (0-30L / min), realizing "quantitative sampling".

[0064] Quantitative degassing and gas monitoring:

[0065] Degassing environment construction: Buffer tank three 58 is divided into an air chamber 583 and a drilling fluid chamber 584 by a transverse partition 582. The upper part is sealed (to prevent gas from escaping out of the tank), and the lower part is connected to buffer tank two 54 through a number of flow holes 57 to ensure continuous inflow of drilling fluid.

[0066] Efficient degassing: The stirring motor 581 drives the dual-shaft planetary stirring device 588, which generates strong shear force through revolution and rotation to maximize the separation of free gas and dissolved gas in the drilling fluid (applicable to oil-based / water-based, high-viscosity drilling fluids).

[0067] Quantitative monitoring: The liquid levels in buffer tank 2 54 and buffer tank 3 58 are kept constant. The gas flow rate is measured at the gas outlet 59 and the air supply port 56 respectively, and the degassing volume is calculated in real time (not less than 1000 mL / min). The liquid partition plate 5862 of the ventilation mechanism 586 is used to prevent the drilling fluid from splashing into the gas chamber to ensure the accuracy of gas detection.

[0068] Data acquisition and transmission: Temperature, density, and conductivity sensors are integrated into the interior of the buffer tank 54. The ultrasonic sensor 5411 measures the liquid level in the buffer tank. The data is transmitted to the mud logger or monitoring system through an independent or centralized acquisition module (wired / wireless). The video surveillance screen is uploaded simultaneously to achieve real-time monitoring and remote visualization.

[0069] Finally, the degassed drilling fluid flows into the buffer tank through the drainage pipe 5101.

[0070] This solution adopts the drilling fluid overflow pipe introduction method, and can also use a drainage pump to drain the drilling fluid to achieve the introduction of the drilling fluid into the buffer tank 512, so as to adapt to various drilling application scenarios.

[0071] Regarding the innovative points and technical effects of implementing this plan.

[0072] (1) Innovation in degassing system design to improve degassing efficiency and quantification

[0073] Innovation:

[0074] The dual-shaft planetary stirring device 588 generates strong shear force through revolution and rotation, and is combined with the "natural flow introduction" design of the three-stage buffer tank (buffer tank 1 512, buffer tank 2 54, buffer tank 3 58) to ensure that the liquid level in buffer tank 2 54 and buffer tank 3 58 remains constant.

[0075] Several flow holes 57 adopt a trumpet-shaped structure (the circumference of the left end is smaller than that of the right end) to achieve uniform flow of drilling fluid and prevent sand clogging; the ventilation mechanism 586 is designed with a gap between the conical ventilation groove 5861 and the liquid isolation plate 5862 to prevent the drilling fluid from splashing into the air chamber 583.

[0076] Technical effect:

[0077] The degassing efficiency is increased from 55%-65% of traditional degassers to 85%-90%, which can effectively separate free gas and dissolved gas (including oil-based, water-based and high-viscosity drilling fluids).

[0078] The stability of degassing volume is significantly improved. Traditional devices are affected by flow / temperature fluctuations, and the degassing volume deviation is ±200mL / min. This solution uses a constant liquid level design to control the deviation within ±50mL / min, and the degassing volume is not less than 1000mL / min.

[0079] (2) Integrated sensor design to optimize installation and monitoring efficiency

[0080] Innovation:

[0081] The sensor assembly 543 integrates a density sensor 548, a temperature sensor 549, a conductivity sensor 5410, an ultrasonic sensor 5411, and a viscosity sensor 5442. It is centrally installed in the buffer tank 2 54 through connecting pipe 1 544, connecting pipe 2 545, connecting pipe 3 546, connecting pipe 4 547, and connecting pipe 5 5441, and cooperates with the lighting camera 5413 to achieve visual monitoring.

[0082] The sensor installation position should avoid the area directly disturbed by the drilling fluid (for example, ultrasonic sensor 5411 should avoid the turbulent area of ​​the buffer tank).

[0083] Technical effects:

[0084] The space occupied by the sensor is reduced by more than 60% compared to traditional dispersed installation (traditional installation requires 0.8m³ of installation space, while this solution only requires 0.3m³), and the inspection and maintenance time is shortened by 50% (single maintenance is reduced from 2 hours to 1 hour).

[0085] Improved measurement accuracy: Density measurement error is reduced from ±0.05g / cm³ to ±0.02g / cm³, temperature measurement error is reduced from ±1°C to ±0.5°C, and conductivity error is reduced from ±5mS / cm to ±2mS / cm.

[0086] (III) Innovation in structure and installation adaptability to enhance working condition compatibility

[0087] Innovation:

[0088] The bracket 1 is a hollow rectangular parallelepiped structure, which can be quickly fixed with bolts through several fixing plates 2 and several mounting holes 4 of the mounting plate 3. It is suitable for a buffer tank of about 1 cubic meter (1.5×1.2×0.5m).

[0089] The sand removal regulating plate 514 of the buffer box 51 can intercept sand particles, and the bottom of the buffer tank 512 is tilted (high at the rear end and low at the front end) to accelerate the discharge of sand. The unloading plate 53 is a hollow fan-shaped structure (the area is 1 / 4 of the outer area of ​​the cylinder) to reduce the impact of drilling fluid.

[0090] Technical effects:

[0091] The installation time is shortened from 0.5 hours of traditional devices to 0.2 hours. It is compatible with the upper and lower outlets of the overflow pipe 511 (Φ30), and can adapt to the installation requirements of different sites such as land and sea.

[0092] (IV) Innovation in safety and system compatibility to improve operational reliability

[0093] Innovation:

[0094] The stirring motor 581 has an explosion-proof grade of Exd IIBT4Gb and a protection grade of IP65, and is suitable for inflammable and explosive environments; the diaphragm 582 and the buffer box 52 are integrally formed, and have excellent sealing performance.

[0095] It supports matching with mud logging instruments or other equipment, and its data interface is compatible with wired / wireless transmission, and can be integrated into the existing drilling parameter monitoring system.

[0096] Technical effects:

[0097] It can be safely used in scenarios where toxic gases such as hydrogen sulfide are monitored, with no record of safety accidents; in an environment with 90% humidity and a temperature of -20°C to 60°C, the equipment's continuous operation stability reaches 99.5%.

[0098] System compatibility is improved. The adaptation rate between traditional devices and third-party equipment is about 70%, while the adaptation rate of this solution is over 95%, and the data transmission delay is ≤1s.

[0099] (V) Low-cost design, balancing performance and cost

[0100] Innovation:

[0101] A modular design is adopted (main body weight < 30kg), with the buffer box 1 51, buffer box 2 52, unloading plate 53, and vertical partition 55 integrally formed to reduce assembly parts; the three-level buffer tank uses natural diversion to replace complex control devices.

[0102] Technical effects:

[0103] The manufacturing cost is 30%-40% lower than that of traditional quantitative degassers, and the maintenance cost is reduced by 50% (no need to frequently adjust the degasser height or clean blockages), achieving low-cost monitoring while ensuring high performance.

[0104] Data Description

[0105] Test conditions:

[0106] Degassing efficiency test: oil-based drilling fluid (viscosity 50 ), water-based drilling fluid (viscosity 30 ), within the flow rate range of 10-30L / min, test three times in a row and take the average value.

[0107] Stability test: simulate the fluctuation of drilling site temperature (-10℃~50℃) and pressure (0.1-0.3MPa), and record the deviation of degassing volume within 24 hours.

[0108] Space and maintenance test: The minimum space required for sensor installation was measured and the average maintenance time for 30 times was calculated. The continuous operation test was conducted in drilling fluid with a sand content of 6%.

[0109] Data Validity

[0110] The experiment was completed at the National Petroleum Drilling Equipment Quality Supervision and Inspection Center, covering 10 typical drilling conditions. Each condition was tested five times, and the standard deviation of the data was ≤5%, which is statistically significant.

[0111] Regarding the application examples of this solution.

[0112] Application Example 1: Application in Conventional Land Oil Drilling

[0113] In a drilling operation at a land oil field in North my country, the drilling depth was 2800m, and a water-based drilling fluid (density 1.2g / cm³, viscosity 35 ), it is necessary to monitor the drilling fluid parameters and degassing effect in real time to prevent well kicks and lost circulation.

[0114] This device is installed within a 1.5×1.2×0.5m buffer tank and is quickly secured (installation takes only 90 minutes) via bracket 1 and mounting holes 4 on several fixing plates 2. Drilling fluid flows from overflow pipe 511 into buffer tank 1 51. The inclined structure (higher at the rear end and lower at the front end) at the bottom of buffer tank 1 512 initially settles sand particles. Sand removal plates 514 intercept sand particles larger than 0.5mm, preventing them from entering downstream systems. The pretreated drilling fluid then flows through buffer overflow port 513 into buffer tank 2 54. At this point, the density sensor 548, temperature sensor 549, conductivity sensor 5410, and viscosity sensor 5442 in the sensor assembly 543 operate synchronously, providing real-time measurements of density (accuracy ±0.02g / cm³), temperature (±0.3°C in the 0-50°C range), conductivity (±1.5mS / cm), and viscosity (±2%). The data is wirelessly transmitted to the driller's room monitoring system.

[0115] The liquid level in buffer tank 2 54 is maintained constant (through a three-stage buffering design). Drilling fluid flows uniformly into buffer tank 3 58 through several flow holes 57. The design of several flow holes 57 with a smaller circumference at the left end than at the right end effectively reduces turbulence and prevents interference with degassing. A stirring motor 581 drives a dual-shaft planetary stirring device 588, generating strong shear forces within the drilling fluid chamber 584, effectively separating the free and dissolved gases in the drilling fluid. The separated gas is discharged through the gas chamber 583, the air supply port 56, and the gas outlet 59. The degassing rate is stable at 1050-1100 mL / min (with a deviation of ±40 mL / min), far exceeding the fluctuation range of 800-1200 mL / min in traditional devices. The inclined bottom structure of the transverse partition 582 (converging toward the mixer sealing groove 585) guides the flow of drilling fluid and, in conjunction with the liquid barrier 5862 of the ventilation mechanism 586, prevents drilling fluid from entering the gas chamber 583, ensuring accurate gas detection.

[0116] Illuminated camera 5413 captures the drilling fluid status in buffer tank 2 in real time, assisting in identifying any anomalies (such as excessive bubbles or sand accumulation). Image delay is ≤0.5s. During 30 consecutive days of operation, the device experienced no blockages or malfunctions, with a data accuracy rate of 99.8%. It also provided effective early warning of two minor well kicks (through sudden changes in flow rate and density), ensuring drilling safety.

[0117] Application Example 2: Application in Offshore Platform Drilling

[0118] On an offshore drilling platform in the South China Sea (at a water depth of 300m), the drilling environment is characterized by high humidity (95%), strong salt spray, and vibration (amplitude 0.5mm), requiring a drilling fluid monitoring device that can withstand these harsh conditions. This device, through optimized structural design, was successfully applied in this scenario.

[0119] During the installation phase, bracket 1 and the buffer tank were secured using bolts through mounting holes 4 in mounting plates 2 and mounting plates 3. A vibration-damping pad (adapting to platform vibration) was installed at the bottom. The entire installation took 1.5 hours, meeting the requirements for rapid operation on offshore platforms. The main components (buffer tank 1 51, buffer tank 2 52, etc.) are constructed of 316 stainless steel and spray-coated with an anti-corrosion coating to withstand salt spray corrosion (no rust was observed after a 500-hour salt spray test). The stirring motor 581, with an IP65 protection rating, operates stably in high-humidity environments without short circuits or leakage.

[0120] After returning from the wellhead, drilling fluid (containing 30,000 mg / L of chloride ions) enters buffer tank 1 51 through overflow pipe 511. A force-reducing plate 53 (hollow fan-shaped structure) effectively reduces the impact of the high-velocity drilling fluid (flow rate is reduced from 2 m / s to 0.8 m / s), preventing drastic fluctuations in the liquid level within buffer tank 1 512. The sloped bottom design of buffer tank 1 512 accelerates sand settling, and the sand removal regulating plate 514 is cleaned regularly (once a week) to reduce the risk of blockage caused by high sand content (8%) during offshore drilling.

[0121] After entering buffer tank 2 54, conductivity sensor 5410 accurately measures drilling fluid conductivity (range: 20-30 mS / cm), reflecting changes in chloride ion concentration, with data deviation from laboratory test results within 1%. Ultrasonic sensor 5411 avoids direct turbulence areas and measures the buffer tank fluid level (with an error of ±2 mm), providing basic data for kick warning. Impact-resistant tempered glass 541 (rectangular structure) combined with illuminated camera 5413 allows for clear observation of drilling fluid conditions (e.g., gas content and color changes), maintaining stable imaging even in low-light conditions on the platform.

[0122] The double-shaft planetary stirring device 588 of the buffer tank 3 is used in high viscosity drilling fluid (80 ) maintains efficient degassing, reaching 88% (compared to only 60% for conventional devices) and maintaining a stable degassing rate of approximately 1020 mL / min. The diaphragm 582 and buffer tank 2 52 are integrally molded, providing excellent sealing performance and preventing seawater from entering the gas chamber 583. The conical design of the vent mechanism 586 (with a small bottom circumference of the vent groove 5861 and a large bottom circumference of the liquid barrier 5862) effectively prevents drilling fluid splashing, ensuring pure gas discharged from the gas outlet 59, with a hydrogen sulfide detection error of less than 5 ppm.

[0123] During the three-month operation cycle, the device experienced a level 6 wave impact and maintained continuous operation, with stable data transmission (the wireless signal was not lost in the complex electromagnetic environment of the platform). It was well adapted to the platform logging system and provided reliable monitoring support for marine drilling safety.

[0124] Application Example 3: Application in High-Sand Drilling Fluid (Desert Oil Field)

[0125] During drilling operations in a desert oilfield in Xinjiang, the sand content of the drilling fluid reached as high as 12% (far exceeding that of conventional land drilling). Traditional monitoring devices frequently clogged (an average of 3-4 times per day), affecting operational efficiency. This solution successfully solved this problem through sand control design.

[0126] The core sand control components of the device include a sand removal regulating plate 514, several flow holes 57, and a diaphragm 582. After entering the buffer tank 51, the drilling fluid first contacts the sand removal regulating plate 514 (installed through the left end of the buffer tank 51). The plate has a clearance of 0.3 mm, intercepting sand particles larger than 0.3 mm. Cleaning is required once a day (conventional devices require cleaning every two hours). The bottom of the buffer tank 512 slopes from the upper rear end to the lower front end (15°), using gravity to guide sand particles toward the front end and reduce accumulation within the tank.

[0127] The bottom of the vertical partition 55 between buffer tank 2 54 and buffer tank 3 58 is equipped with several flow holes 57 (trumpet-shaped, with a smaller circumference on the left end than on the right). This structure not only guides the drilling fluid at a uniform rate, but also "filters" some sand particles (larger sand particles have difficulty passing through the narrow opening due to inertia) through the smaller circumference on the left end, reducing the amount of sand entering buffer tank 3 58 by 60%. The bottom of the horizontal partition 582 in buffer tank 3 58 is inclined towards the center on both sides (ending at the mixer sealing groove 585), guiding sand particles to converge towards the drain port 510 and be discharged through the drain pipe 5101, reducing wear on the dual-shaft planetary mixer 588.

[0128] During continuous testing, the device operated continuously for 168 hours (7 days) in drilling fluid with a 12% sand content. The sand removal regulating plate 514 required only two cleanings, several flow holes 57 remained clear, and wear of the dual-shaft planetary agitator 588 was less than 0.1 mm (compared to 1.2 mm wear for conventional devices over the same period). Degassing efficiency remained at 85% (compared to 45% for conventional devices due to clogging). Sensor monitoring data was stable (density error ±0.03 g / cm³), effectively supporting continuous drilling operations in desert oilfields with high sand content.

[0129] Application Example 4: Application in High Viscosity Drilling Fluid (Shale Gas Drilling)

[0130] In shale gas drilling in the Sichuan Basin, the drilling fluid viscosity is as high as 100 (3 times that of conventional drilling fluid). Traditional degassers have low degassing efficiency (<50%) due to insufficient shear force. This device solves this problem through a dual-axis planetary mixing design.

[0131] After the drilling fluid enters buffer tank 1 51 from overflow pipe 511, the unloading plate 53 reduces the flow rate, initially buffering the fluid in buffer tank 1 512 before entering buffer tank 2 54 through buffer overflow port 513. At this point, density sensor 548 remains stable in a high-viscosity environment (measuring frequency 10 Hz), with a data response time of less than 1 second, reflecting changes in drilling fluid density (range 1.5-2.0 g / cm³).

[0132] After entering buffer tank three 58, a stirring motor 581 drives a dual-shaft planetary stirring device 588 (orbital speed 30 r / min, rotational speed 60 r / min), generating strong shear forces that break the high-viscosity drilling fluid into fine droplets, increasing the gas-liquid contact area. A transverse partition 582 is located two-thirds of the height of buffer tank three 58. The upper air chamber 583 provides space for gas separation, while the dual-shaft stirring in the lower drilling fluid chamber 584 ensures zero dead zones. Ventilation mechanisms 586 are evenly spaced from front to back, ensuring that the gas rises evenly into the air chamber 583 and is discharged through the gas outlet 59.

[0133] Test results show that this solution achieves an 85% degassing efficiency for high-viscosity drilling fluids (compared to only 48% for conventional devices), with a stable degassing rate of 1000-1050 mL / min, far exceeding the degassing requirement for shale gas drilling (≥800 mL / min). The sensor assembly 543's connecting pipes 1 544 and 2 545, among others, feature an anti-adhesion design to reduce drilling fluid adhesion and extend the maintenance cycle to 15 days (compared to a cleanup every three days for conventional devices), ensuring efficient monitoring of high-viscosity conditions in shale gas drilling.

[0134] Application Example 5: Application in Hydrogen Sulfide Environment (Sour Gas Field)

[0135] During drilling in a sour gas field in Chongqing, the formation contained hydrogen sulfide (concentration 500-800 ppm), requiring strict monitoring of the hydrogen sulfide content in the drilling fluid. Traditional equipment posed a safety hazard due to its insufficient explosion-proof performance. This solution's equipment was adapted to this scenario through a high-safety design.

[0136] The entire unit utilizes an explosion-proof design. The stirring motor 581 is explosion-proof rated Exd IIBT4Gb, complying with GB3836.1-2010, ensuring spark-free operation in flammable and explosive environments. All electrical interfaces utilize explosion-proof seals to prevent explosions caused by hydrogen sulfide leaks. Non-metallic components, such as buffer tanks 1 and 2, are constructed from hydrogen sulfide-resistant materials (polytetrafluoroethylene) and exhibit no signs of aging or cracking from prolonged exposure to hydrogen sulfide.

[0137] After the drilling fluid enters buffer tank two 54, sensor assembly 543 simultaneously monitors parameters. Conductivity sensor 5410 indirectly reflects the amount of dissolved hydrogen sulfide (with an error of < 3 ppm) through conductivity changes, and data is transmitted in real time to the explosion-proof control room. The dual-shaft planetary agitator 588 in buffer tank three 58 efficiently degasses the fluid, separating hydrogen sulfide from the drilling fluid. The fluid then enters the hydrogen sulfide detector through gas outlet 59. The degassed fluid is then discharged through drain port 510, minimizing corrosion to downstream equipment.

[0138] During two consecutive months of operation, the device experienced no safety anomalies, with a hydrogen sulfide monitoring response time of < 2s and a 100% warning accuracy. It successfully avoided three safety risks caused by sudden increases in hydrogen sulfide concentration, meeting the safety monitoring needs of high hydrogen sulfide environments in sour gas fields.

[0139] Application Example 6: Application in Low Temperature Environment (Winter in Northeast Oilfields)

[0140] During winter drilling at an oil field in Northeast China, the ambient temperature dropped to -25°C. Traditional devices had difficulty starting the motor and reduced sensor sensitivity, which affected the monitoring effect. This solution ensured stable operation through low-temperature adaptation design.

[0141] The device bracket 1 adopts a hollow rectangular parallelepiped structure, and is filled with thermal insulation cotton (thermal conductivity <0.03W / ( )), reducing the impact of external low temperature on internal components; the stirring motor 581 has a built-in heating module (automatically starts at -25℃), ensuring stable starting current (rated current 1.5A) and no starting failure.

[0142] The temperature sensor 549 of buffer tank 2 54 has a measurement error of < 0.5°C in the range of -20°C to 10°C, reflecting the change of drilling fluid temperature (to prevent freezing at low temperatures). The ultrasonic sensor 5411 uses a low-temperature probe (working temperature -40°C to 80°C), and the measurement error of liquid level height is < 3mm, avoiding measurement drift caused by low temperatures.

[0143] The transverse partition 582 of buffer tank 3 58 is integrally formed with buffer tank 2 52, minimizing heat leakage through gaps. The temperature within gas chamber 583 is maintained above 5°C, ensuring smooth gas flow (without ice blockage). The twin-shaft planetary agitator 588 uses low-temperature grease (applicable to temperatures between -30°C and 120°C), maintaining lubrication properties even at low temperatures and maintaining stirring efficiency.

[0144] During winter operations, the device ran continuously for 30 days without any failures due to low temperatures. The degassing efficiency remained at around 85%, and the sensor data accuracy was 99.6%, providing stable monitoring support for winter drilling in the Northeast Oilfield.

[0145] Application Example 7: Integrated Application with Intelligent Mud Logging System

[0146] In the intelligent drilling project of shale gas fields, drilling fluid monitoring data needs to be connected to the intelligent logging system to realize data fusion and intelligent analysis. The device of this solution has been successfully applied to the system due to its high compatibility.

[0147] The device's data interface supports the Modbus RTU protocol and connects to the logging system via wired transmission (explosion-proof cable) at a transmission rate of 9600 bps. Data includes 12 parameters, including density, temperature, conductivity, liquid level, and degassing, meeting system requirements for real-time performance (latency < 1 second). Measurement data from the sensor assembly 543 undergoes internal preprocessing (filtering and calibration) before upload, reducing data processing pressure on the logging system.

[0148] The intelligent logging system analyzes density trends uploaded by the device and, combined with formation pressure models, automatically warns of well kick risks (with 90% accuracy). It also uses degassing data and gas composition analysis to identify oil and gas zones (with an error of <5 m). It also uses conductivity and temperature correlation analysis to determine changes in drilling fluid properties and guide drilling fluid adjustments (such as when to add chemicals). The video stream from the 5413 lighting camera is connected to the system, enabling visual remote monitoring of drilling fluid conditions and supporting remote diagnostics by experts.

[0149] During the test, the compatibility rate between the device and the intelligent logging system reached 100%, with no data loss or mistransmission, providing high-quality real-time monitoring data for intelligent drilling and promoting the transformation of drilling operations from experience-driven to data-driven.

[0150] The seven application examples above cover diverse drilling environments (onshore, offshore, desert, sour gas fields, and low-temperature regions), different drilling fluid types (oil-based, water-based, high-sand content, and high-viscosity), and system integration scenarios, fully demonstrating the adaptability and high performance of this solution. This solution utilizes an overflow pipe to introduce drilling fluid into buffer tank 1, and can also utilize a drainage pump to divert fluid, adapting to a variety of drilling scenarios.

[0151] The present invention includes: 1- bracket; 2- fixing plate; 3- mounting plate; 4- mounting hole; 5- drilling fluid outlet buffer mechanism; 51- buffer box 1; 511- overflow pipe; 512- buffer tank 1; 513- buffer overflow port; 514- sand removal regulating plate; 52- buffer box 2; 53- unloading plate; 54- buffer tank 2; 541- tempered glass; 542- air supply pipe; 543- sensor assembly; 544- connecting pipe 1; 54 41 - Connecting pipe 5; 5442 - Viscosity sensor; 545 - Connecting pipe 2; 546 - Connecting pipe 3; 547 - Connecting pipe 4; 548 - Density sensor; 549 - Temperature sensor; 5410 - Conductivity sensor; 5411 - Ultrasonic sensor; 5412 - Fixed column; 5413 - Lighting camera; 55 - Vertical partition; 56 - Air supply port; 57 - Flow hole; 58 - Buffer tank 3; 581 - Stirring motor; Components 582 - diaphragm; 583 - air chamber; 584 - drilling fluid chamber; 585 - mixer sealing groove; 586 - ventilation mechanism; 5861 - ventilation groove; 5862 - liquid barrier plate; 5863 - support bar; 587 - drive shaft; 588 - dual-shaft planetary mixer; 59 - gas outlet; 591 - exhaust pipe; 510 - liquid discharge port; 5101 - liquid discharge pipe. These components are all standard components or well-known to those skilled in the art. Their structures and principles can be learned from technical manuals or through routine experimental methods. The present invention addresses the following issues: various types of degassers currently on the market suffer from low degassing efficiency; non-quantitative degassing (influenced by uncertainties in flow rate, temperature, pressure, etc.); inconvenient installation (heavy equipment and difficult installation and adjustment); inconvenient maintenance (requires cleaning and can cause clogging due to sedimentation); and high prices (quantitative degassers have relatively complex design functions). Various detection sensors are installed separately, occupying buffer tank space and making repair and maintenance difficult. The present invention solves the performance defects of the degasser, improves the degassing efficiency and quantitativeness, optimizes the sensor installation, improves the monitoring convenience and space utilization, enhances the installation adaptability and working condition compatibility, improves the safety and system compatibility, and has high cost performance and low cost.

[0152] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims, not the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be included within the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0153] Furthermore, it should be understood that although the specification is described in terms of embodiments, the specification is not to be limited to only these described embodiments. The specification is intended to include each individual embodiment as a separate embodiment as well as any combination of individual embodiments.

Claims

1. A new type of quantitative degasser, characterized by: The invention comprises a bracket (1), a plurality of fixing plates (2), a mounting plate (3), a plurality of mounting holes (4) and a drilling fluid outlet buffer mechanism (5), wherein the bracket (1) is a hollow rectangular parallelepiped structure, the plurality of fixing plates (2) are rectangular parallelepiped structures and are arranged on the left and right sides of the top of the bracket (1) in an opposite manner, the mounting plates (3) are arranged at the bottom of the drilling fluid outlet buffer mechanism (5) corresponding to the position between each left and right group of fixing plates (2), the plurality of mounting holes (4) are evenly arranged on the fixing plates (2) and the mounting plates (3), the drilling fluid outlet buffer mechanism (5) is arranged on the top of the bracket (1), and the bracket (1), the plurality of fixing plates (2), the mounting plate (3), the plurality of mounting holes (4) and the drilling fluid outlet buffer mechanism (5) are all located inside the buffer tank; The drilling fluid outlet buffer mechanism (5) includes a buffer box 1 (51), a buffer box 2 (52), a force unloading plate (53), a buffer tank 2 (54), a vertical partition (55), an air supply port (56), a plurality of flow holes (57), a buffer tank 3 (58), a gas outlet (59) and a liquid discharge port (510). The buffer box 1 (51) and the buffer box 2 (52) are arranged in a left-right structure. The force unloading plate (53) is arranged at the left end of the top of the buffer box 2 (52) and is connected to the buffer box 1 (51). The buffer tank 2 (54) is arranged on the left side of the interior of the buffer box 2 (52). The vertical partition (5 5) is arranged on the right side of the buffer tank 2 (54), the buffer tank 3 (58) is arranged on the right side of the vertical partition (55), the air supply port (56) is arranged at the top of the interior of the vertical partition (55) and located in the rear half of the vertical partition (55), a plurality of the flow holes (57) are arranged at the bottom of the interior of the vertical partition (55) at equal distances from front to back, the gas outlet (59) is arranged at the right end of the buffer tank 2 (52) corresponding to the position of the air supply port (56), and the drain port (510) is arranged at the right end of the buffer tank 2 (52) corresponding to the position of the flow hole (57) centered in the front-to-back direction; The buffer tank 2 (54) is provided with tempered glass (541), air supply pipe (542), sensor assembly (543), connecting pipe 1 (544), connecting pipe 2 (545), connecting pipe 3 (546), connecting pipe 4 (547), density sensor (548), temperature sensor (549), conductivity sensor (5410), ultrasonic sensor (5411), fixing column (5412) and lighting camera (5413) inside and outside. The tempered glass (541) corresponds to The buffer tank 2 (54) is located at the top of the buffer box 2 (52), the air supply pipe (542) passes through the top of the buffer box 2 (52) and extends into the box and is located inside the air supply port (56), the air supply pipe (542) is provided with an air supply flow meter (5421), the sensor assembly (543) is located at the front end of the air supply pipe (542) and at the top of the buffer box 2 (52), the connecting pipe 1 (544) is located at the sensor. The bottom of the sensor assembly (543), the left end of the connecting pipe (544) is provided with a connecting pipe (5441) with a bent structure, the end of the connecting pipe (5441) is provided with a viscosity sensor (5442), the connecting pipe (545) and the connecting pipe (546) are respectively located in front of and behind the connecting pipe (544) and are connected to the connecting pipe (544) through the bent structure, the connecting pipe (547) is located at the top of the sensor assembly (543), and the density sensor (5442) is provided at the end of the connecting pipe (5441). The sensor (548), temperature sensor (549), conductivity sensor (5410) and ultrasonic sensor (5411) are respectively located at the ends of the connecting pipe 1 (544), connecting pipe 2 (545), connecting pipe 3 (546) and connecting pipe 4 (547), respectively. The fixing column (5412) is located at the front end of the sensor assembly (543) and at the top of the buffer box 2 (52). The lighting camera (5413) is located at the top of the fixing column (5412); The buffer tank three (58) is provided with a stirring motor (581), a transverse partition (582), an air chamber (583), a drilling fluid chamber (584), a mixer sealing groove (585), a ventilation mechanism (586), a driving shaft (587) and a double-shaft planetary stirring device (588) inside and outside. The stirring motor (581) is located at the top of the buffer tank two (52) corresponding to the position of the buffer tank three (58). The transverse partition (582) is located at two-thirds of the internal height of the buffer tank three (58). The air chamber (583) and the drilling fluid chamber (584) are located at The mixer sealing groove (585) is located at the upper and lower ends of the transverse diaphragm (582), the venting mechanism (586) is evenly distributed on the front and rear sides of the mixer sealing groove (585) from front to back and is located inside the transverse diaphragm (582), the driving shaft (587) is located at the bottom of the stirring motor (581) and inside the air chamber (583), and the dual-axis planetary stirring device (588) is located at the bottom of the driving shaft (587) and inside and at the bottom of the mixer sealing groove (585).

2. A novel quantitative degasser according to claim 1, characterized in that: The buffer box 1 (51) and the buffer box 2 (52) are both rectangular parallelepiped structures. The front-to-back length of the buffer box 1 (51) is equal to the front-to-back length of the buffer box 2 (52). The width of the buffer box 2 (52) is greater than the width of the buffer box 1 (51). The unloading plate (53) is a hollow fan-shaped structure and its external area is equal to one-fourth of the external area of ​​a cylinder. The vertical partition (55) is a rectangular parallelepiped structure. The buffer box 1 (51), the buffer box 2 (52), the unloading plate (53) and the vertical partition (55) are integrally formed. An exhaust pipe (591) is provided at the right end of the gas outlet (59). An exhaust flow meter (592) is provided on the exhaust pipe (591). A drain pipe (5101) is provided at the right end of the drain port (510).

3. A novel quantitative degasser according to claim 2, characterized in that: An overflow pipe (511), a buffer tank (512), a buffer overflow port (513) and a sand removal regulating plate (514) are provided inside and outside the buffer box (51). The overflow pipe (511) is located at the top of the buffer box (51) and the pipe body extends to the left. The buffer tank (512) is located inside the buffer box (51). The bottom of the buffer tank (512) is inclined and tilted from the upper rear end to the lower front end. The buffer overflow port (513) is a rectangular structure and is located at the top of the right end of the buffer box (51) and at the left end of the unloading plate (53). The sand removal regulating plate (514) is located at the bottom of the front end of the buffer tank (512) and is arranged through the left end of the buffer box (51).

4. A novel quantitative degasser according to claim 3, characterized in that: The tempered glass (541) has a rectangular structure, the air supply pipe (542) has a Z-shaped structure and is entirely located behind the overflow pipe (511), and the connecting pipe 1 (544), connecting pipe 2 (545), connecting pipe 3 (546), connecting pipe 4 (547), connecting pipe 5 (5441), density sensor (548), temperature sensor (549), conductivity sensor (5410), ultrasonic sensor (5411) and viscosity sensor (5442) are all located inside the buffer tank 2 (54).

5. A novel quantitative degasser according to claim 1, characterized in that: The flow hole (57) has a trumpet-shaped structure, and the perimeter of the left end of the flow hole (57) is smaller than the perimeter of the right end. The height of the center of the left end of the flow hole (57) is consistent with the height of the center of the right end.

6. A novel quantitative degasser according to claim 1, characterized in that: The left and right sides of the bottom of the transverse partition (582) are both inclined and tilted from the lower left and right ends of the transverse partition (582) to the upper middle position. The tilting of the left and right sides of the bottom of the transverse partition (582) to the middle stops at the left and right ends of the mixer sealing groove (585). The transverse partition (582) and the second buffer box (52) are integrally formed.

7. A novel quantitative degasser according to claim 1, characterized in that: The ventilation mechanism (586) includes a ventilation groove (5861), a liquid barrier plate (5862) and a plurality of support bars (5863), wherein the liquid barrier plate (5862) is arranged inside the ventilation groove (5861), and the plurality of support bars (5863) are arranged in a cross-shaped structure between the liquid barrier plate (5862) and the ventilation groove (5861).

8. A novel quantitative degasser according to claim 7, characterized in that: The ventilation groove (5861) has a conical structure and the circumference of the bottom of the ventilation groove (5861) is smaller than the circumference of the top. The liquid partition plate (5862) has a conical structure and the circumference of the bottom of the liquid partition plate (5862) is larger than the circumference of the top. The circumference of the bottom of the liquid partition plate (5862) is also larger than the circumference of the bottom of the ventilation groove (5861) and the circumference of the middle of the ventilation groove (5861). The top of the liquid partition plate (5862) and the top of the ventilation groove (5861) are located in the same plane. There is a gap between the liquid partition plate (5862) and the ventilation groove (5861). The support bar (5863) has a cylindrical structure. The ventilation groove (5861), the liquid partition plate (5862) and the plurality of support bars (5863) are integrally formed.

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