Overflow early warning device for liquid-gas separator

Abstract

The utility model discloses an overflow early warning device for a liquid-gas separator. The overflow early warning device comprises a liftable base, a mass flow monitoring assembly, a shunting assembly, a controller and an alarm, the novel overflow early warning device can be connected with an anti-overflow pipe outlet, a vibrating screen or a liquid-gas separator to form a complete drilling fluid circulating system, in the well drilling and completion operation process, all-weather and real-time monitoring of weak changes of outlet flow is achieved through the mass flow monitoring device, meanwhile, the whole set of drilling parameters and drilling fluid performance parameters on the drilling site are integrated, and the drilling efficiency is improved. Through automatic data processing of the controller, changes of different drilling parameters and drilling fluid performance parameters under different working conditions are discriminated, and when a set well leakage or overflow safety threshold value is reached, sound and light alarming is carried out, and early warning of the risk of well leakage or overflow is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil drilling and completion well control safety, and more particularly to an overflow early warning device for a liquid-gas separator. Background Art

[0002] Well control technology is key to ensuring oil and gas drilling safety. Effective well control facilitates the discovery and protection of oil and gas reservoirs, effectively preventing blowouts, uncontrolled blowouts, and fires.

[0003] A blowout is a serious, catastrophic accident in drilling projects that can cause huge losses. Once a blowout occurs, it will disrupt normal production order, severely damage oil and gas resources, cause environmental pollution, and easily lead to fires, casualties, equipment damage, and even the abandonment of oil and gas wells.

[0004] Well control is a systematic project, including well control design, well control equipment, preparations before drilling into oil and gas formations, drilling into oil and gas formations and well control operations, fire prevention, explosion prevention, and H2S prevention measures, and handling of uncontrolled blowouts, well control technical training, and nine well control management systems.

[0005] Specifically, during drilling and completion operations, early detection and treatment of overflows are paramount to well control. Adhering to a "sit-on-duty" system, whereby dedicated personnel observe and record overflow indications and circulating tank liquid level changes at designated locations, is an effective and conventional method for detecting overflows. However, conventional methods such as sit-on-duty observation and liquid level monitoring are susceptible to human and environmental factors in the accuracy and timeliness of overflow detection.

[0006] Therefore, how to provide an overflow warning device for a liquid-gas separator, which can be used during drilling and completion operations to eliminate interference from human and environmental factors, and to achieve all-weather real-time monitoring of slight changes in outlet flow through a mass flow monitoring device, while integrating a full set of drilling parameters and drilling fluid performance parameters at the drilling site, and automatically processing data through a PLC to identify changes in different working conditions, different drilling parameters, and drilling fluid performance parameters. When the set well leakage or overflow safety threshold is reached, an audible and visual alarm will be issued to achieve a well leakage or overflow risk warning and ensure well control safety. This is an urgent problem to be solved by technical personnel in this field. Utility Model Content

[0007] The utility model aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent, and provides an overflow warning device for a liquid-gas separator.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] An overflow warning device for a liquid-gas separator is connected to the outlet of the liquid-gas separator and includes a liftable base, a mass flow monitoring component, a diversion component, a controller and an alarm;

[0010] A bottom plate is horizontally arranged on the liftable base;

[0011] The diversion assembly includes an inclined diversion pipe and a plurality of flange butterfly valves, the upper end of the diversion pipe is a liquid inlet, and the lower end is a liquid outlet, the liquid inlet is connected to the outlet of the liquid-gas separator, and the liquid outlet is connected to the drilling fluid circulation system; the bottom side of the diversion pipe is provided with a detection inlet and a detection outlet at intervals, the flange butterfly valve is installed on the diversion pipe between the detection inlet and the detection outlet, and the detection inlet and the detection outlet are respectively equipped with the flange butterfly valve;

[0012] The mass flow monitoring assembly includes a base, a pipe connector and a mass flow meter, wherein the base is fixed to the bottom plate, the pipe connector is fixed to the base, and the pipe connector is respectively connected to the detection inlet of the diversion assembly and the liquid inlet of the mass flow meter through a pipe, and the liquid outlet of the mass flow meter is connected to the detection outlet through a pipe;

[0013] The controller and the alarm are mounted on the base plate, and the controller is electrically connected to the flange butterfly valve, the mass flow meter and the alarm respectively.

[0014] Furthermore, the diversion pipe includes a first three-way pipe and a second three-way pipe connected at an angle, the upper end of the first three-way pipe is a liquid inlet, and the liquid inlet is connected to the outlet of the liquid-gas separator through a flange connecting pipe. The flange butterfly valve is connected between the first three-way pipe and the second three-way pipe, and the lower end of the second three-way pipe is the liquid outlet. The detection inlet on the bottom side of the first three-way pipe and the detection outlet on the bottom side of the second three-way pipe are sequentially connected to the flange butterfly valve and the barbed flange.

[0015] Furthermore, the pipe connector is a cubic structure, the bottom end of which is fixedly connected to the base, the top end of the pipe connector is open and communicates with the liquid inlet of the mass flow meter, and the liquid outlet of the mass flow meter is connected to the barbed flange through a hose;

[0016] The three sides of the pipe connector are each provided with an opening communicating with the interior, wherein two opposite openings are respectively provided with a sealing cover and a barbed flange, and the barbed flange is connected to the detection inlet of the first tee pipe via a hose;

[0017] The other side opening of the pipe connector is vertically connected to a third tee pipe, the pipe wall of the third tee pipe is fixed to the base plate through a bracket, and the two ports of the third tee pipe away from the pipe connector are respectively connected to a ball valve and a union flange nipple in sequence.

[0018] Furthermore, the liftable base includes a telescopic sleeve, a crossbeam and a support leg assembly. The telescopic sleeves are distributed at the four corners of the base plate and are fixedly connected to the base plate. The two ends of the crossbeam are respectively fixedly connected to the top ends of two adjacent telescopic sleeves. The liquid outlet end of the mass flowmeter is fixedly connected to the crossbeam. The support leg assembly is fixedly set on the ground, and the bottom end of the telescopic sleeve is fixedly connected to the support leg assembly.

[0019] Furthermore, the telescopic sleeve includes a support rod and a branch tube, the support rod is sleeved in the branch tube, a pin hole is provided on the support rod, the branch tube is fixedly connected to the four corners of the base plate, and a plurality of positioning holes are correspondingly provided on the branch tube along the length direction. The pin shaft passes through the positioning hole and the pin hole in sequence to fix the branch tube to the support rod, and the top end of the branch tube is fixedly connected to the end of the beam.

[0020] Furthermore, the support leg assembly includes a foot plate, a threaded column and an adjusting nut. The foot plate is horizontally arranged on the ground, the bottom end of the threaded column is vertically fixedly connected to the foot plate, an axial threaded hole is opened at the bottom end of the support rod, the top end of the threaded column is threadedly connected to the bottom end of the support rod, and the adjusting nut is in contact with the bottom end face of the support rod.

[0021] Furthermore, the controller is a PLC control cabinet, which has a built-in PLC automatic control system, and the PLC automatic control system is electrically connected to the flange butterfly valve, the mass flow meter, the alarm and the ball valve respectively.

[0022] Furthermore, a movable ladder connected to the ground is provided on the base plate.

[0023] It can be seen from the above technical solution that compared with the prior art, the utility model discloses an overflow warning device for a liquid-gas separator, which is connected to the overflow prevention pipe outlet, vibrating screen or liquid-gas separator through a shunt pipe to form a complete drilling fluid circulation system. When the drilling fluid needs to be detected, the controller controls the flange butterfly valve between the detection inlet and the detection outlet on the shunt pipe to be closed, and the two flange butterfly valves of the detection inlet and the detection outlet on the bottom side are opened. The drilling fluid enters the pipeline connector and the mass flow meter from the liquid inlet in sequence, and finally enters the drilling fluid circulation system through the liquid outlet after being detected by the mass flow meter; the data detected by the mass flow meter enters the controller for processing and analysis. When the data is abnormal, the control alarm will sound an alarm warning; the overall detection and warning process does not require manual sampling tests, does not require entering the drilling well, and will not cause human and environmental impacts on the drilling fluid samples, thereby ensuring detection accuracy, and the entire process can be automatically controlled, which is convenient and has high safety performance; when there is no need to detect the drilling fluid, the controller controls the flange butterfly valve between the detection inlet and the detection outlet on the shunt pipe to open, and the two flange butterfly valves at the detection inlet and the detection outlet on the bottom side are closed, and the device is removed, and the drilling fluid flows directly through the shunt pipe; not only that, the base of the utility model is liftable, and the height of the liquid inlet and the liquid outlet can be adjusted to facilitate connection with the drilling fluid circulation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0025] Figure 1 It is a side view of the present utility model.

[0026] Figure 2 It is the main view of the present utility model.

[0027] Figure 3 It is a top view of the utility model.

[0028] in:

[0029] 10-Liquid-gas separator;

[0030] 20 - liftable base; 21 - bottom plate; 22 - crossbeam; 23 - support rod; 24 - branch pipe; 25 - footboard; 26 - threaded column; 27 - adjustment nut; 211 - movable ladder;

[0031] 30-Mass flow monitoring assembly; 31-Pipeline connector; 32-Mass flow meter; 33-Hose; 34-Ball valve; 35-Union flange nipple;

[0032] 40-diverter assembly; 41-flange butterfly valve; 42-detection inlet; 43-detection outlet; 44-first three-way pipe; 45-second three-way pipe; 46-third three-way pipe; 50-controller. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0034] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0036] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0037] The embodiment of the utility model discloses an overflow warning device for a liquid-gas separator, which is connected to the outlet of the liquid-gas separator 10 and includes a liftable base 20, a mass flow monitoring component 30, a diversion component 40, a controller 50 and an alarm; a bottom plate 21 is horizontally arranged on the liftable base 20;

[0038] The diversion assembly 40 includes an inclined diversion pipe and three flange butterfly valves 41. The flange butterfly valve 41 is a flange butterfly valve with a handwheel. The upper end of the diversion pipe is a liquid inlet, and the lower end is a liquid outlet. The liquid inlet is connected to the outlet of the liquid-gas separator 10, and the liquid outlet is connected to the drilling fluid circulation system. The bottom side of the diversion pipe is provided with a detection inlet 42 and a detection outlet 43 at intervals. The flange butterfly valve 41 is installed on the diversion pipe between the detection inlet 42 and the detection outlet 43. The detection inlet 42 and the detection outlet 43 are respectively equipped with a flange butterfly valve 41.

[0039] The mass flow monitoring assembly 30 includes a base, a pipe connector 31, and a mass flow meter 32. The base is fixed to the bottom plate 21, and the pipe connector 31 is fixed to the base. The pipe connector 31 is connected to the detection inlet 42 of the diversion assembly 40 and the liquid inlet of the mass flow meter 32 through pipes, respectively. The liquid outlet of the mass flow meter 32 is connected to the detection outlet 43 through a pipe.

[0040] The controller 50 and the alarm are installed on the base plate 21. The controller 50 is a PLC control cabinet with a built-in PLC automatic control system. The PLC automatic control system is electrically connected to the flange butterfly valve 41, the mass flow meter 32 and the alarm respectively.

[0041] like Figure 1-3 As shown, the diverter pipe includes a first three-way pipe 44 and a second three-way pipe 45 connected at an angle. The upper end of the first three-way pipe 44 is a liquid inlet, and the liquid inlet is connected to the outlet of the liquid-gas separator 10 through a flange connecting pipe. A flange butterfly valve 41 is connected between the first three-way pipe 44 and the second three-way pipe 45. The lower end of the second three-way pipe 45 is a liquid outlet. The detection inlet 42 on the bottom side of the first three-way pipe 44 and the detection outlet 43 on the bottom side of the second three-way pipe 45 are sequentially connected to the flange butterfly valve 41 and the barbed flange.

[0042] In a specific embodiment, the pipe connector 31 is a cubic structure, the bottom end of which is fixedly connected to the base, the top end of the pipe connector 31 is open and connected to the liquid inlet of the mass flowmeter 32, and the liquid outlet of the mass flowmeter 32 is connected to the barb flange through a hose 33; the three sides of the pipe connector 31 are provided with openings connected to the interior, of which the two opposite openings are respectively installed with a sealing cover and a barb flange, and the barb flange is connected to the detection inlet of the first three-way pipe through a hose 33; the other side opening of the pipe connector 31 is vertically connected to the third three-way pipe 46, the pipe wall of the third three-way pipe 46 is fixed to the bottom plate 21 by a bracket, and the two ports of the third three-way pipe 46 away from the pipe connector 31 are respectively connected to the ball valve 34 and the nipple flange 35 in sequence, and the ball valve is electrically connected to the PLC automation control system.

[0043] like Figure 2As shown, the liftable base 20 includes a telescopic sleeve, a crossbeam 22 and a support leg assembly. The telescopic sleeves are distributed at the four corners of the base plate 21 and are fixedly connected to the base plate 21. The two ends of the crossbeam 22 are respectively fixedly connected to the top ends of two adjacent telescopic sleeves. The liquid outlet end of the mass flowmeter 32 is fixedly connected to the crossbeam 22. The support leg assembly is fixedly set on the ground, and the bottom end of the telescopic sleeve is fixedly connected to the support leg assembly.

[0044] The telescopic sleeve includes a support rod 23 and a branch tube 24. The support rod 23 is sleeved in the branch tube 24. A pin hole is provided on the support rod 23. The branch tube 24 is fixedly connected to the four corners of the base plate 21. The branch tube 24 has a plurality of positioning holes correspondingly provided along the length direction. The pin shaft passes through the positioning holes and the pin holes in sequence to fix the branch tube 24 to the support rod 23. The top end of the branch tube 24 is fixedly connected to the end of the beam 22.

[0045] Advantageously, the support leg assembly includes a foot plate 25, a threaded column 26 and an adjusting nut 27. The foot plate 25 is horizontally arranged on the ground, the bottom end of the threaded column 26 is vertically fixedly connected to the foot plate 25, an axial threaded hole is opened at the bottom end of the support rod 23, the top end of the threaded column 26 is threadedly connected to the bottom end of the support rod 23, and the adjusting nut 27 is in contact with the bottom end face of the support rod 23. The length of the support rod leaking out of the branch pipe can be fine-tuned by adjusting the nut to adjust the overall height of the telescopic sleeve.

[0046] Advantageously, a movable ladder 211 connected to the ground is also provided on the base plate 21 to facilitate workers to climb up the base to conduct regular inspections of the device.

[0047] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0048] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An overflow warning device for a liquid-gas separator, characterized in that: Connected to the outlet of the liquid-gas separator (10), it includes a liftable base (20), a mass flow monitoring component (30), a flow diversion component (40), a controller (50) and an alarm; A bottom plate (21) is horizontally arranged on the liftable base (20); The diversion assembly (40) includes an inclined diversion pipe and a plurality of flange butterfly valves (41), wherein the upper end of the diversion pipe is a liquid inlet, and the lower end is a liquid outlet, the liquid inlet is connected to the outlet of the liquid-gas separator (10), and the liquid outlet is connected to the drilling fluid circulation system; a detection inlet (42) and a detection outlet (43) are provided at intervals on the bottom side of the diversion pipe, the flange butterfly valve (41) is installed on the diversion pipe between the detection inlet (42) and the detection outlet (43), and the detection inlet (42) and the detection outlet (43) are respectively installed with the flange butterfly valve (41); The mass flow monitoring assembly (30) comprises a base, a pipe connector (31) and a mass flow meter (32); the base is fixed on the bottom plate (21); the pipe connector (31) is fixed on the base; the pipe connector (31) is respectively connected to the detection inlet (42) of the diversion assembly (40) and the liquid inlet of the mass flow meter (32) through a pipeline; and the liquid outlet of the mass flow meter (32) is connected to the detection outlet (43) through a pipeline; The controller (50) and the alarm are mounted on the base plate (21), and the controller (50) is electrically connected to the flange butterfly valve (41), the mass flow meter (32), and the alarm, respectively.

2. The overflow warning device for a liquid-gas separator according to claim 1, characterized in that: The diverter pipe comprises a first three-way pipe (44) and a second three-way pipe (45) connected obliquely, the upper end of the first three-way pipe (44) being a liquid inlet, the liquid inlet being connected to the outlet of the liquid-gas separator (10) via a flange connecting pipe, the flange butterfly valve (41) being connected between the first three-way pipe (44) and the second three-way pipe (45), the lower end of the second three-way pipe (45) being the liquid outlet, the detection inlet (42) on the bottom side of the first three-way pipe (44) and the detection outlet (43) on the bottom side of the second three-way pipe (45) being sequentially connected to the flange butterfly valve (41) and the barbed flange.

3. The overflow warning device for a liquid-gas separator according to claim 2, characterized in that: The pipe connector (31) is a cubic structure, the bottom end of which is fixedly connected to the base, the top end of the pipe connector (31) is open and communicates with the liquid inlet of the mass flow meter (32), and the liquid outlet of the mass flow meter (32) is connected to the barbed flange through a hose (33); The three sides of the pipe connector (31) are all provided with openings communicating with the interior, wherein two opposite openings are respectively installed with a sealing cover and a barbed flange, and the barbed flange is communicated with the detection inlet of the first tee pipe through the hose (33); The other side opening of the pipe connector (31) is vertically connected to a third three-way pipe (46), the pipe wall of the third three-way pipe (46) is fixed to the base plate (21) through a bracket, and the two ports of the third three-way pipe (46) away from the pipe connector (31) are respectively connected in sequence to a ball valve (34) and a union flange nipple (35).

4. The overflow warning device for a liquid-gas separator according to claim 3, characterized in that: The liftable base (20) comprises a telescopic sleeve, a crossbeam (22) and a support leg assembly. The telescopic sleeves are distributed at the four corners of the base plate (21) and are fixedly connected to the base plate (21). The two ends of the crossbeam (22) are respectively fixedly connected to the top ends of two adjacent telescopic sleeves. The liquid outlet end of the mass flow meter (32) is fixedly connected to the crossbeam (22). The support leg assembly is fixedly arranged on the ground, and the bottom end of the telescopic sleeve is fixedly connected to the support leg assembly.

5. The overflow warning device for a liquid-gas separator according to claim 4, characterized in that: The telescopic sleeve comprises a support rod (23) and a branch pipe (24), wherein the support rod (23) is sleeved in the branch pipe (24), a pin hole is provided on the support rod (23), and the branch pipe (24) is fixedly connected to the four corners of the base plate (21), and a plurality of positioning holes are correspondingly provided on the branch pipe (24) along the length direction, and a pin shaft passes through the positioning holes and the pin holes in sequence to fix the branch pipe (24) to the support rod (23), and the top end of the branch pipe (24) is fixedly connected to the end of the crossbeam (22).

6. The overflow warning device for a liquid-gas separator according to claim 5, characterized in that: The support foot assembly comprises a foot plate (25), a threaded column (26) and an adjusting nut (27); the foot plate (25) is horizontally arranged on the ground; the bottom end of the threaded column (26) is vertically fixedly connected to the foot plate (25); an axial threaded hole is opened at the bottom end of the support rod (23); the top end of the threaded column (26) is threadedly connected to the bottom end of the support rod (23); and the adjusting nut (27) contacts the bottom end surface of the support rod (23).

7. The overflow warning device for a liquid-gas separator according to claim 6, characterized in that: The controller (50) is a PLC control cabinet having a built-in PLC automatic control system. The PLC automatic control system is electrically connected to the flange butterfly valve (41), the mass flow meter (32), the alarm and the ball valve (34) respectively.

8. The overflow warning device for a liquid-gas separator according to claim 1, characterized in that: The bottom plate (21) is also provided with a movable ladder (211) connected to the ground.

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