CN212780019U - Rock core collection device - Google Patents
Rock core collection device Download PDFInfo
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- CN212780019U CN212780019U CN202021065718.6U CN202021065718U CN212780019U CN 212780019 U CN212780019 U CN 212780019U CN 202021065718 U CN202021065718 U CN 202021065718U CN 212780019 U CN212780019 U CN 212780019U
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Abstract
The utility model provides a rock core collection device, is including advancing slag pipe, buffer tank and mud jar, advances slag pipe intercommunication rig and buffer tank upper portion, and the mud jar is located the buffer tank lower part, the mud jar with be equipped with the screen cloth between the buffer tank, the top cap of buffer tank is equipped with exhaust duct, is equipped with buffer tank level sensor in the buffer tank, the buffer tank bottom is equipped with the buffer tank valve. The utility model has the advantages as follows: 1. the core collecting system is provided with a slag inlet pipe and a buffer tank, the reducing design of the slag inlet pipe and the setting of slurry with a certain height in the buffer tank can buffer and decelerate the high-speed three-phase flow during ejection, and the collision and damage of the core are avoided; 2. the control device can be used for sequentially discharging rock cores while discharging slurry and rock slag in the tank according to a buffer tank valve which is opened at regular time according to the drilling speed, so that a reliable sample is provided for geological research; 3. set up gas detection sensor group in the buffer tank, handle the gas that detects to have harm, avoid discharging the back and cause the hidden danger to rig floor operating personnel.
Description
Technical Field
The utility model relates to a drilling rig especially is used for gas lift reverse circulation to creep into rock core collection device of technology.
Background
The gas lift reverse circulation drilling process is that compressed air is sprayed into the inner pipe from the mixer through the annular gap between the inner pipe and the outer pipe of the double-wall active drill pipe and the double-wall drill pipe to form countless small bubbles, the bubbles rise rapidly along the inner pipe and expand simultaneously, the compressed air continuously enters well liquid to form gas-water mixed liquid with low specific gravity on the upper part of the mixer, and according to the principle of a communicating vessel, the gas-water mixed liquid in the inner pipe flows upwards under the action of pressure difference to continuously take out the core or the detritus at the bottom of the hole out of the ground surface. The gas lift reverse circulation drilling process is widely applied to the construction fields of water wells, geothermal wells and the like at present, but the gas lift reverse circulation coring process is still in the research stage at present, and related matched equipment is not complete. The high-speed three-phase flow returning upwards in the gas lift reverse circulation coring process comprises air, slurry, rock slag and a rock core, and only the rock core is needed for geological research, and the air, the slurry and the rock slag need to be separated and removed. At present, a proper core collecting device is not available, the existing separation method can cause core damage to different degrees, influence on later geological research, and depend on manual operation, so that the working efficiency is low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a from the upward separation of returning in three-phase flow with the rock core order and collecting, the complete harmless rock core collection device of rock core of guaranteeing to collect.
The problem of the utility model is solved with following technical scheme:
the utility model provides a rock core collection device, is including advancing slag pipe, buffer tank and mud jar, advances slag pipe intercommunication rig and buffer tank upper portion, and the mud jar is located the buffer tank lower part, the mud jar with be equipped with the screen cloth between the buffer tank, the top cap of buffer tank is equipped with exhaust duct, is equipped with buffer tank level sensor in the buffer tank, the buffer tank bottom is equipped with the buffer tank valve.
Above-mentioned rock core collection device, buffer tank are equipped with the overflow pipe, and the import of overflow pipe is located the buffer tank lateral wall, and the export intercommunication screen cloth upper portion of overflow pipe, the import height of overflow pipe is 2-2.5 meters, and the minimum liquid level height is not less than 1.5 meters in the buffer tank, and buffer tank level sensor prescribes a limit to liquid level height maximum value, minimum, is equipped with the overflow pipe valve on the overflow pipe.
According to the rock core collecting device, the exhaust pipeline is provided with the exhaust pipeline valve, the exhaust pipeline is connected with the harmful gas pipeline through the tee joint, the harmful gas pipeline is connected with the harmful gas processing box, the adsorbing substances are arranged in the harmful gas processing box, and the harmful gas pipeline is provided with the harmful gas pipeline valve; the upper portion in the buffer tank is equipped with gas and surveys sensor group, and gas is surveyed sensor group and is included hydrogen sulfide sensor, methane sensor, carbon monoxide sensor and sulfur dioxide sensor.
In the core collecting device, the slag inlet pipe is a reducer pipe with the diameter increased, the outlet end of the slag inlet pipe is in a horn mouth shape, and the slag inlet pipe is provided with a slag inlet pipeline valve.
Above-mentioned rock core collection device, mud jar are equipped with the agitator, are equipped with mud jar level sensor in the mud jar, and the liquid level maximum value is no longer than in 1.2m in the mud jar, and the liquid level minimum value is no less than 0.3m, is equipped with the slush pump valve on the slush pump inlet pipeline, and the solid accuse device is connected to slush pump outlet pipeline.
In the core collecting device, the slag inlet pipe is connected with the blowout pipeline through a tee joint, and the blowout pipeline valve is arranged on the blowout pipeline.
Above-mentioned rock core collection device, the screen cloth slope sets up, and the screen cloth is connected the rock core and is collected the platform.
The utility model has the advantages as follows: 1. the device is provided with a slag inlet pipe and a buffer tank, the reducing design of the slag inlet pipe and the setting of slurry with a certain height in the buffer tank can buffer and decelerate the high-speed three-phase flow during ejection, and the collision and damage of a rock core are avoided; 2. the control device can be used for sequentially discharging rock cores while discharging slurry and rock slag in the tank according to a buffer tank valve which is opened at regular time according to the drilling speed, so that a reliable sample is provided for geological research; 3. a gas sensor group is arranged in the buffer tank, so that harmful gas is treated, and hidden danger to drilling platform operators after the gas is discharged is avoided; 4. the work of the device is controlled by the control device, and the automation degree is high.
Drawings
The present invention will be further explained with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of the present invention.
The reference numbers in the figures are: 1: a slag inlet pipe; 2: a mud tank; 3: a core; 4: a stirrer; 5: an overflow conduit; 6: an overflow pipe valve; 7: a buffer tank; 8: a three phase flow; 9: a slag inlet pipeline valve; 10: an outlet end of the slag inlet pipe; 11: an exhaust duct; 12: a harmful gas treatment box; 13: a harmful gas pipeline valve; 14: a harmful gas pipeline; 15: an exhaust pipe valve; 16: a gas sensor group; 17: a buffer tank level sensor; 18: a buffer tank valve; 19: screening a screen; 20: a control device; 21: a core collection platform; 22: a slurry pump outlet conduit; 23: a slurry pump; 24: a mud pump valve; 25: an inlet pipeline of a slurry pump; 26: a mud tank level sensor; 27: blowing a pipeline; 28: open flow pipeline valve, 29, solid control device.
Detailed Description
Referring to fig. 1, the utility model discloses a go into sediment pipe 1, buffer tank 7 and mud jar 2, go into sediment pipe intercommunication rig and buffer tank upper portion, the mud jar is located the buffer tank lower part, the mud jar with be equipped with the screen cloth 19 that is used for separating rock core 3 between the buffer tank. The slag inlet pipe is a reducer pipe with the diameter increased, the outlet end 10 of the slag inlet pipe is in a horn mouth shape, and a slag inlet pipeline valve 9 is arranged on the slag inlet pipe. The upward high-speed three-phase flow 8 (air, slurry, rock slag and rock core) enters the buffer tank 7 through the slag inlet pipe 1, and the structure of the slag inlet pipe can realize the deceleration of the three-phase flow and then discharge the three-phase flow into the buffer tank 7. A certain liquid level height needs to be kept in the buffer tank, so that the three-phase flow entering the buffer tank is buffered and decelerated again under the action of the liquid level. According to experience, when the minimum value of the liquid level in the buffer tank is not less than 1.5m, the buffer protection effect on the rock core is ideal, and the rock core bottom-touching damage can be avoided. A buffer tank liquid level sensor 17 is arranged in the buffer tank, the lowest liquid level height in the buffer tank is controlled to be not less than 1.5m, and the maximum liquid level height is limited to be 2-2.5 m. The buffer tank is provided with an overflow pipeline 5, the inlet of the overflow pipeline is positioned on the side wall of the buffer tank, the outlet of the overflow pipeline is communicated with the upper part of the screen, the inlet height of the overflow pipeline is the highest liquid level controlled by the buffer tank liquid level sensor, and the overflow pipeline is provided with an overflow pipeline valve 6. The top cap of buffer tank is equipped with exhaust duct 11, is equipped with exhaust duct valve 15 on the exhaust duct, and the gas in the buffer tank is discharged by exhaust duct under the normal condition. The exhaust pipeline is connected with a harmful gas pipeline 14 through a tee joint, the harmful gas pipeline is connected with a harmful gas processing box 12, and adsorption substances are arranged in the harmful gas processing box. And a harmful gas pipeline valve 13 is arranged on the harmful gas pipeline. The upper portion in the buffer tank is equipped with the gas of detecting hydrogen sulfide, methane harmful gas and surveys sensor group 16, and gas surveys sensor group and includes hydrogen sulfide sensor, methane sensor, carbon monoxide sensor and sulfur dioxide sensor. When the harmful gas in the buffer tank exceeds the detection value, the exhaust pipeline valve 15 is closed, the harmful gas pipeline valve 13 is opened, and the harmful gas in the buffer tank enters the harmful gas treatment box and is discharged after adsorption treatment of the adsorption material.
Still referring to fig. 1, the cores, slurry and slag discharged from the buffer tank are separated by a screen, and then enter a core collecting platform 21, and the cores are collected and boxed manually in sequence. The mud and rock slag which penetrate through the screen enter a mud tank. The mud tank is provided with a stirrer 4 for avoiding mud sedimentation. A mud tank liquid level sensor 26 is arranged in the mud tank, and the mud tank liquid level sensor controls the maximum value of the liquid level in the mud tank not to exceed 1.2m and the minimum value of the liquid level not to be less than 0.3 m. A mud pump valve 24 is arranged on the mud pump inlet pipeline 25, and the mud pump outlet pipeline 22 is connected with a solid control device 29.
Still referring to fig. 1, the slag inlet pipe is connected to a blowout pipeline 27 through a tee joint, and a blowout pipeline valve 28 is arranged on the blowout pipeline.
Referring to fig. 1, a control device 20 is provided, and signal circuits of the gas sensor group, the buffer tank level sensor and the mud tank level sensor are communicated with a PLC of the control device, and the PLC controls the opening and closing of each valve according to a set program.
Still referring to fig. 1, the working process of the present invention is as follows: the high-speed three-phase flow returning upwards enters the buffer tank 7 through the slag inlet pipe 1. A certain liquid level height needs to be kept in the buffer tank, so that the three-phase flow entering the buffer tank is buffered and decelerated again under the action of the liquid level. The buffer tank top cap is equipped with exhaust duct 11, and gas in the buffer tank rises and gets into exhaust duct 11, and exhaust duct valve 15 opens under the normal condition, and the gas in the buffer tank is discharged through exhaust duct. When the harmful gas in the buffer tank exceeds the detection value, the exhaust pipeline valve 15 is closed, the harmful gas pipeline valve 13 is opened, and the harmful gas in the buffer tank enters the harmful gas treatment box for treatment and then is discharged. A buffer tank valve 18 is arranged at the bottom of the buffer tank, the buffer tank valve is opened at regular time according to the drilling speed and the core length, slurry and rock slag are discharged, and the cores are discharged in sequence. A buffer tank liquid level sensor 17 is arranged in the buffer tank and used for detecting the liquid level height in the tank. Except that the buffer tank valve is opened at regular time, when the liquid level of the buffer tank is higher than the maximum value, the flow of the upward-returning slurry is larger than the flow of the slurry overflowing through the overflow pipeline or the overflow pipeline is blocked, and in order to prevent the liquid level of the slurry in the buffer tank from being too high, the control device controls the buffer tank valve to open and discharge the flow, and simultaneously, the drainage condition of the overflow pipeline is checked. When the liquid level height is smaller than the minimum value in the buffer tank, the opening time of the buffer tank valve is too long, and in order to prevent the influence of too low liquid level in the buffer tank on the buffering and speed reducing effect of the rock core, the control device controls the buffer tank valve to be closed. An overflow pipe valve 6 is arranged on the overflow pipe, and the overflow pipe valve is normally opened under the normal state. The mud and rock slag entering the mud tank through the filter screen are conveyed to the solid control device 29, and the mud is filtered by the solid control system and then discharged back into the drill hole, so that the mud circulation process is completed. When the gas survey sensor group detects that the gas that returns upward contains harmful gas, the device is in abnormal condition, and the blowout pipeline valve is opened, and the drilling process returns the three-phase flow and flows through the blowout pipeline blowout to keeping away from the clear place of personnel to guarantee operating personnel's safety.
Claims (7)
1. A rock core collection device which characterized in that: the mud-slurry drilling machine comprises a slag inlet pipe (1), a buffer tank (7) and a mud tank (2), wherein the slag inlet pipe is communicated with a drilling machine and the upper portion of the buffer tank, the mud tank is located on the lower portion of the buffer tank, a screen (19) is arranged between the mud tank and the buffer tank, a top cover of the buffer tank is provided with an exhaust pipeline (11), a buffer tank liquid level sensor (17) is arranged in the buffer tank, and a buffer tank valve (18) is arranged at the bottom of the buffer tank.
2. The core collection device as recited in claim 1, wherein: the buffer tank is provided with an overflow pipeline (5), the inlet of the overflow pipeline is positioned on the side wall of the buffer tank, the outlet of the overflow pipeline is communicated with the upper part of the screen, the inlet height of the overflow pipeline is 2-2.5 meters, the lowest liquid level height in the buffer tank is not less than 1.5 meters, the liquid level sensor of the buffer tank limits the maximum value and the minimum value of the liquid level height, and the overflow pipeline is provided with an overflow pipeline valve (6).
3. The core collection device as recited in claim 2, wherein: an exhaust pipeline valve (15) is arranged on the exhaust pipeline, the exhaust pipeline is connected with a harmful gas pipeline (14) through a tee joint, the harmful gas pipeline is connected with a harmful gas processing box (12), an adsorption substance is arranged in the harmful gas processing box, and a harmful gas pipeline valve (13) is arranged on the harmful gas pipeline; and a gas sensor group (16) is arranged at the upper part in the buffer tank and comprises a hydrogen sulfide sensor, a methane sensor, a carbon monoxide sensor and a sulfur dioxide sensor.
4. The core collection device as recited in claim 3, wherein: the slag inlet pipe is a reducer pipe with the diameter enlarged, the outlet end (10) of the slag inlet pipe is in a horn mouth shape, and a slag inlet pipeline valve (9) is arranged on the slag inlet pipe.
5. The core collection device as recited in claim 4, wherein: the mud tank is provided with a stirrer (4), a mud tank liquid level sensor (26) is arranged in the mud tank, the maximum value of the liquid level in the mud tank is not more than 1.2m, the minimum value of the liquid level is not less than 0.3m, a mud pump valve (24) is arranged on a mud pump inlet pipeline (25), and a mud pump outlet pipeline (22) is connected with a solid control device (29).
6. The core collection device as recited in claim 5, wherein: the slag inlet pipe is connected with a blowout pipeline (27) through a tee joint, and a blowout pipeline valve (28) is arranged on the blowout pipeline.
7. The core collection device as recited in claim 6, wherein: the screen is obliquely arranged and connected with the core collecting platform (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021065718.6U CN212780019U (en) | 2020-06-11 | 2020-06-11 | Rock core collection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021065718.6U CN212780019U (en) | 2020-06-11 | 2020-06-11 | Rock core collection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212780019U true CN212780019U (en) | 2021-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021065718.6U Active CN212780019U (en) | 2020-06-11 | 2020-06-11 | Rock core collection device |
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| CN (1) | CN212780019U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113884658A (en) * | 2021-11-02 | 2022-01-04 | 安徽理工大学 | Test device and method for researching influence of grading of particles of broken rock debris of hard rock machinery |
| CN113976340A (en) * | 2021-11-05 | 2022-01-28 | 湖州新开元碎石有限公司 | Hydraulic vortex separator for mineral processing equipment |
-
2020
- 2020-06-11 CN CN202021065718.6U patent/CN212780019U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113884658A (en) * | 2021-11-02 | 2022-01-04 | 安徽理工大学 | Test device and method for researching influence of grading of particles of broken rock debris of hard rock machinery |
| CN113884658B (en) * | 2021-11-02 | 2023-10-10 | 安徽理工大学 | Test device and method for researching influence of hard rock mechanical breaking rock debris grain composition |
| CN113976340A (en) * | 2021-11-05 | 2022-01-28 | 湖州新开元碎石有限公司 | Hydraulic vortex separator for mineral processing equipment |
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