A degasser mud probe cleaning device

Abstract

The application discloses a degasser mud probe cleaning device, which comprises a mud tank, a cleaning cylinder fixedly arranged in the mud tank, the cleaning cylinder being provided with an opening at one end, a cleaning cylinder baffle movably arranged at the opening, a driving mechanism connected with the cleaning cylinder baffle and used for driving the cleaning cylinder baffle to move so as to open or close the opening, an ultrasonic transducer sealing bin arranged around the outer wall of the cleaning cylinder, a plurality of ultrasonic transducers arranged in the ultrasonic transducer sealing bin, an ultrasonic generator connected with the ultrasonic transducers and used for providing sound sources for the ultrasonic transducers, a mud probe connecting hole formed on the cleaning cylinder and located at the end of the cleaning cylinder opposite to the opening, wherein a mud suction inlet of a mud collecting pipe is connected to the mud probe connecting hole, and a blow-off port is formed at the bottom of the cleaning cylinder, wherein the ultrasonic transducers vibrate micro-bubbles in the fluid in the cleaning cylinder to generate cavitation effect and clean the mud suction inlet.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of geological logging engineering technology in the field of oil exploration and development drilling operation site, and particularly relates to a degasser mud probe cleaning device. BACKGROUND

[0002] Gas logging is an important part of comprehensive logging. In the gas logging process, the degasser quantitatively collects the drilling fluid returned to the ground from the wellbore through the mud probe. The gas dissolved in the drilling fluid is separated from the drilling fluid under the action of the centrifugal force of the degassing chamber stirring rod, and the separated gas enters the gas analyzer through the gas pipeline, thereby ensuring the quantitative analysis and detection of the gas in the formation.

[0003] At present, the mud probe cleaning device of the offshore logging degasser mainly removes the particle substances blocked on the surface of the mud probe by the flexible drive shaft driving the scraper to prevent the cuttings and other granular objects from blocking the suction inlet of the mud probe. However, due to the torque transmission problem of the flexible shaft and the nature of the drilling fluid additives, the suction inlet of the mud probe is easily blocked by cuttings, mud and drilling fluid additives, and the degasser mud probe suction inlet cannot collect drilling fluid, which seriously restricts the gas analysis work of the gas logging gas analyzer, resulting in the loss of gas logging data. Not only does it affect the collection of the front-end drilling fluid of the gas logging, but also seriously affects the service life of the rubber rod component in the degasser. SUMMARY

[0004] The purpose of the present application is to overcome the defects of the prior art, and provide a degasser mud probe cleaning device. The micro-bubbles in the liquid are kept vibrating and cavitation occurs by the ultrasonic wave generating device in the device, the blockage is fatigued and broken, and is stripped from the mud suction inlet, thereby solving the problem of blockage of the quantitative degasser mud probe suction inlet.

[0005] The technical scheme provided by the present application is as follows:

[0006] A degasser mud probe cleaning device, comprising:

[0007] a mud tank;

[0008] a cleaning cylinder fixedly arranged in the mud tank, one end of the cleaning cylinder having an opening;

[0009] a cleaning cylinder baffle movably arranged at the opening;

[0010] a driving mechanism connected with the cleaning cylinder baffle, driving the cleaning cylinder baffle to move, so that the opening is opened or closed;

[0011] an ultrasonic transducer sealing bin arranged around the outer wall of the cleaning cylinder;

[0012] a plurality of ultrasonic transducers arranged in the ultrasonic transducer sealing chamber;

[0013] an ultrasonic generator connected to the ultrasonic transducers to provide a sound source for the ultrasonic transducers;

[0014] a mud probe connecting hole formed in the cleaning cylinder and located at an end of the cleaning cylinder opposite to the opening;

[0015] wherein one end of the mud collection pipe has a mud suction inlet connected to the mud probe connecting hole;

[0016] a drain hole formed in the bottom of the cleaning cylinder;

[0017] wherein the ultrasonic transducers vibrate micro-bubbles in the fluid in the cleaning cylinder to generate cavitation effect to clean the mud suction inlet.

[0018] Preferably, the driving mechanism comprises:

[0019] a motor fixedly installed at the top of the cleaning cylinder;

[0020] a first gear connected to the power output shaft of the motor;

[0021] a second gear engaged with the first gear;

[0022] a rack fixedly arranged on the cleaning cylinder baffle and arranged along the height direction of the cleaning cylinder baffle;

[0023] wherein the rack is engaged with the second gear.

[0024] Preferably, the cleaning cylinder is fixed to the mud tank by a clamp.

[0025] Preferably, the degasser mud probe cleaning device further comprises:

[0026] a drain hole baffle which is an annular baffle, the drain hole baffle is fixedly arranged on the lower side of the bottom of the cleaning cylinder and surrounds the drain hole.

[0027] Preferably, the degasser mud probe cleaning device further comprises:

[0028] a flushing pipe having one end connected to the mud collection pipe and the other end connected to a flushing water source;

[0029] wherein a ball valve is installed on the flushing pipe to open or close the flushing pipe.

[0030] Preferably, a motor chamber is arranged at the top of the cleaning cylinder, and the motor is arranged in the motor chamber.

[0031] Preferably, the cleaning cylinder is a square cylinder; the ultrasonic transducer sealing cabin comprises a crossbeam part and two longitudinal beam parts, the two longitudinal beam parts are connected to the two ends of the crossbeam part respectively;

[0032] The crossbeam part is located at the top of the square cylinder, and the two longitudinal beam parts abut against the two side walls of the square cylinder respectively; the inner cavities of the crossbeam part and the two longitudinal beam parts are communicated respectively.

[0033] Preferably, the ultrasonic transducer is 3 groups, and is arranged in the inner cavities of the crossbeam and the two longitudinal beam parts one by one.

[0034] The beneficial effects of the present application are:

[0035] The degasser mud probe cleaning device provided by the present application can cause micro-bubbles in the liquid to keep vibrating and cavitation through the ultrasonic wave generating device in the device, so that the blockage is fatigued and broken and peeled off from the mud suction port, thereby solving the problem of blockage of the degasser mud probe suction port. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is a general structure schematic diagram of the degasser mud probe cleaning device.

[0037] Figure 2 It is a partial sectional view of the mud probe ultrasonic cleaning system.

[0038] Figure 3 It is a structure schematic diagram of the mud collecting pipe and the flushing pipe.

[0039] Figure 4 It is a structure schematic diagram of the cleaning cylinder and the ultrasonic generator.

[0040] Figure 5 It is a rear view of the cleaning cylinder and the ultrasonic generator.

[0041] Figure 6 It is a bottom view of the cleaning cylinder and the ultrasonic generator.

[0042] Figure 7 It is a side sectional view of the cleaning cylinder.

[0043] Figure 8 It is a rear sectional view of the cleaning cylinder.

[0044] Figure 9 It is a schematic diagram of the driving mechanism. DETAILED DESCRIPTION

[0045] The application will be further described in detail below with reference to the accompanying drawings so that those skilled in the art can implement the application according to the description.

[0046] As Figures 1-9 shown, the application provides a degasser mud probe cleaning device, which mainly comprises: 1 mud tank, mud collection pipe 2, flushing pipe 3, cleaning cylinder 4, holder 5, cable 6 and ultrasonic generator 7.

[0047] The mud tank 1 is a U-shaped tank, and the top and both ends of the mud tank 1 are respectively open. The cleaning cylinder 4 is fixedly installed in the mud tank 1 through the holder 5. Wherein, one end of the holder 5 is provided with a clamping arm, and the clamping arm is clamped on the side wall of the mud tank 1, and the other end of the holder 5 is fixedly connected with the top of the cleaning cylinder 4. One end of the cleaning cylinder 4 has an opening, and the opening of the cleaning cylinder 4 faces the opening at one end of the mud tank 1.

[0048] The cleaning cylinder baffle 406 is arranged at the opening of the cleaning cylinder 4 in a liftable manner. A driving mechanism is connected with the cleaning cylinder baffle 406, for driving the cleaning cylinder baffle 406 to rise or fall, so as to open or close the opening.

[0049] The ultrasonic transducer sealing cabin 401 is arranged around the outer wall of the cleaning cylinder 4; a plurality of groups of ultrasonic transducers 402 are arranged in the ultrasonic transducer sealing cabin 401. The ultrasonic generator 7 is arranged outside the mud tank 1, and the ultrasonic generator 7 is connected with the ultrasonic transducers 402 through the cable 6, for providing the ultrasonic transducers 402 with a sound source.

[0050] The mud probe connecting hole 410 is arranged on the cleaning cylinder 4, and the mud probe connecting hole 410 is located at one end of the cleaning cylinder 4 opposite to the opening provided with the cleaning cylinder baffle 406. Wherein, one end of the mud collection pipe 2 has a mud suction inlet 201 (mud probe), the mud suction inlet 201 is provided with a filter screen, and the mud suction inlet 201 is connected with the mud probe connecting hole 410. The blowdown port 411 is arranged at the bottom of the cleaning cylinder 4. Wherein, the ultrasonic transducers 402 can convert the sound energy generated by the ultrasonic generator 7 into mechanical vibration, so as to make the micro-bubbles in the fluid in the cleaning cylinder 4 vibrate, produce cavitation effect, remove the attached cuttings in the mud suction inlet 201 (mud probe) and the mud collection pipe, and clean the mud suction inlet 201. The removed blocked cuttings are discharged to the sludge tank 1 through the blowdown port 411.

[0051] As Figure 9As shown, in the present embodiment, the driving mechanism comprises: a motor 405 fixedly installed on the top of the cleaning cylinder 4; a first gear 409 connected with the power output shaft of the motor 405; a second gear 408 engaged with the first gear 409; and a rack 407 fixedly arranged on the cleaning cylinder baffle 406 and arranged along the height direction (vertical direction) of the cleaning cylinder baffle 406. The rack 407 is engaged with the second gear 408. When the motor 405 is started, the power output shaft of the motor 405 rotates to drive the first gear 409 to rotate, and the power is transmitted to the rack 407 through the second gear 408, thereby driving the cleaning cylinder baffle 406 connected with the rack 407 to move up and down.

[0052] As a preferred, the rack 407 is provided in two, and the two racks 407 are symmetrically arranged near the two ends of the cleaning cylinder baffle 406 to ensure the stable lifting of the cleaning cylinder baffle 406.

[0053] As a preferred, the top of the cleaning cylinder 4 is provided with a motor compartment 404, and the motor 405 is arranged in the motor compartment 404. The motor compartment 404 can protect the motor 405.

[0054] As a preferred, the degasser mud probe cleaning device is further provided with a blow-off port baffle 403 which is an annular baffle. The blow-off port baffle 403 is fixedly arranged on the lower side of the bottom of the cleaning cylinder 403 and surrounds the blow-off port 411. The annular baffle 403 arranged outside the blow-off port can prevent the fluid in the lower part of the cleaning cylinder 4 from entering the cleaning cylinder 4 through the blow-off port 411.

[0055] The flushing pipe 3 is a hose, one end of the flushing pipe 3 is connected with the mud collecting pipe 2, and the other end is connected with a flushing water source. The connection position of the flushing pipe 3 with the mud collecting pipe 2 is close to the mud suction port (mud probe); a ball valve is installed on the flushing pipe 3 for opening or closing the flushing pipe 3.

[0056] In the present embodiment, the cleaning cylinder 4 is a square cylinder. The ultrasonic transducer sealing compartment 401 comprises: a cross beam part 401a and two longitudinal beam parts 401b connected with the two ends of the cross beam part 401a. The cross beam part 401a is located on the top of the cleaning cylinder 4 (square cylinder), and the two longitudinal beam parts 401b abut against the two side walls (vertical surfaces) of the cleaning cylinder 4 (square cylinder) respectively; the inner cavities of the cross beam part 401a and the two longitudinal beam parts 401b are communicated respectively. The ultrasonic transducer 402 is separated from the fluid in the cleaning cylinder 4 by the sealed ultrasonic transducer sealing compartment 401, so as to ensure the stable operation of the ultrasonic transducer 402.

[0057] The ultrasonic transducer 402 is 3 groups, each group includes 2 ultrasonic transducers 402; and 3 groups of ultrasonic transducers 402 are correspondingly arranged in the inner cavities of the cross beam 401a and the two longitudinal beams 401b. Through this arrangement, the ultrasonic transducers 402 are surrounded at the top and both sides of the cleaning cylinder 4, improving the uniformity of vibration.

[0058] When the mud collection pipe 2 is working, the cleaning cylinder baffle 406 is opened under the drive of the motor 405, and the fluid in the mud tank 1 can normally enter the cleaning cylinder 4 (through the opening provided with the cleaning cylinder baffle 406); the ultrasonic generator 7 provides an acoustic source for the 3 groups of ultrasonic transducers 402. The fluid enters the mud collection pipe 2 through the mud suction port 201, and a small part of the particulate matter slightly smaller than the filter screen aperture of the mud suction port 201 will block the mud suction port 201. The ultrasonic transducer 402 can convert the acoustic energy generated by the ultrasonic generator 7 into mechanical vibration, and radiate ultrasonic waves to the fluid medium in the cleaning cylinder 4 through the cylinder wall of the cleaning cylinder 4. Due to the radiation of ultrasonic waves, the micro-bubbles in the liquid in the cleaning cylinder 4 can maintain vibration under the action of sound waves to cause cavitation, destroy the adsorption of dirt and the surface of the cleaning part, cause fatigue failure of the dirt layer and be stripped, and the high-energy micro-liquid flow generated by the destruction of the cavitation bubble cleans the surface of the mud suction port 201 (filter screen) to remove the particulate matter blocking the mud suction port 201. At this time, the flushing pipe 3 is in a closed state. The cleaned rock debris particles flow back into the mud tank 1 through the drain hole 411 at the lower part of the cleaning cylinder 4.

[0059] During the stop of the mud collection pipe 2, the system enters the flushing program, the cleaning cylinder baffle 406 is closed by the motor 405, and the flushing pipe 3 is opened at the same time, and clean water is injected from the flushing pipe 3 to flush the mud collection pipe 2, so that the rock debris that has not completely flowed out can flow back into the mud tank 1 through the drain hole 411, and the ultrasonic transducer 402 works to further clean the mud collection pipe 2.

[0060] Although the embodiments of the present application have been disclosed as above, they are not limited to the application and implementation listed in the specification and embodiments, and can be fully applied to various fields suitable for the present application, and additional modifications can be easily realized by those skilled in the art, and therefore the present application is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. A degasser mud probe cleaning device, characterized by, The mud tank is provided with: a cleaning cylinder fixedly arranged in the mud tank, one end of the cleaning cylinder being provided with an opening; a cleaning cylinder baffle movably arranged at the opening; a driving mechanism connected with the cleaning cylinder baffle, the driving mechanism driving the cleaning cylinder baffle to move so as to open or close the opening; an ultrasonic transducer sealing chamber arranged around the outer wall of the cleaning cylinder; a plurality of groups of ultrasonic transducers arranged in the ultrasonic transducer sealing chamber; an ultrasonic generator connected with the ultrasonic transducers, the ultrasonic generator providing a sound source for the ultrasonic transducers; a mud probe connecting hole provided on the cleaning cylinder and located at the end of the cleaning cylinder opposite to the opening; wherein one end of a mud collecting pipe is provided with a mud suction inlet, the mud suction inlet being connected to the mud probe connecting hole; a sewage outlet provided at the bottom of the cleaning cylinder; a sewage outlet baffle in the shape of an annular baffle, the sewage outlet baffle being fixedly arranged at the lower side of the bottom of the cleaning cylinder and surrounding the sewage outlet; a flushing pipe, one end of the flushing pipe being connected to the mud collecting pipe and the other end of the flushing pipe being connected to a flushing water source; wherein a ball valve is installed on the flushing pipe, the ball valve being used to open or close the flushing pipe; the cleaning cylinder is a square cylinder; the ultrasonic transducer sealing chamber comprises a cross beam part and two longitudinal beam parts, the two longitudinal beam parts being respectively connected to the two ends of the cross beam part; wherein the cross beam part is located at the top of the square cylinder, and the two longitudinal beam parts are respectively abutted against the two side walls of the square cylinder; the inner cavities of the cross beam part and the two longitudinal beam parts are respectively communicated; the ultrasonic transducers are three groups of ultrasonic transducers and are respectively arranged in the inner cavities of the cross beam part and the two longitudinal beam parts; wherein when the mud collecting pipe is in operation, the cleaning cylinder baffle is opened under the driving of the motor, the fluid in the mud tank enters the cleaning cylinder, the ultrasonic transducers vibrate the micro-bubbles in the fluid in the cleaning cylinder to generate cavitation effect, and the mud suction inlet is cleaned. The driving mechanism comprises:

2. The degasser mud probe cleaning device of claim 1, wherein, a motor fixedly installed at the top of the cleaning cylinder; a first gear connected with the power output shaft of the motor; a second gear engaged with the first gear; a rack fixedly arranged on the cleaning cylinder baffle and arranged along the height direction of the cleaning cylinder baffle; wherein the rack is engaged with the second gear. The cleaning cylinder is fixed to the mud tank by a clamp.

3. The degasser mud probe cleaning device of claim 2, wherein, The top of the cleaning cylinder is provided with a motor chamber, and the motor is arranged in the motor chamber.

4. The degasser mud probe cleaning device of claim 2, wherein, ​

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