CN110578484A - Drilling cutting liquid-containing decrement device based on pulsating negative pressure and vibration screening - Google Patents
Drilling cutting liquid-containing decrement device based on pulsating negative pressure and vibration screening Download PDFInfo
- Publication number
- CN110578484A CN110578484A CN201910965075.6A CN201910965075A CN110578484A CN 110578484 A CN110578484 A CN 110578484A CN 201910965075 A CN201910965075 A CN 201910965075A CN 110578484 A CN110578484 A CN 110578484A
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- negative pressure
- screen
- liquid
- vacuum
- device based
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- 239000007788 liquid Substances 0.000 title claims abstract description 73
- 238000005553 drilling Methods 0.000 title claims abstract description 60
- 238000005520 cutting process Methods 0.000 title claims abstract description 36
- 238000012216 screening Methods 0.000 title claims abstract description 16
- 239000003595 mist Substances 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 230000005284 excitation Effects 0.000 claims abstract description 6
- 239000004744 fabric Substances 0.000 claims description 4
- 230000003584 silencer Effects 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000013585 weight reducing agent Substances 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract description 30
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 8
- 238000000926 separation method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 238000003828 vacuum filtration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/01—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons
- B01D33/03—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements
- B01D33/0346—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements with flat filtering elements
- B01D33/0353—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements with flat filtering elements self-supporting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/35—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition
- B01D33/41—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition in series connection
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
- E21B21/065—Separating solids from drilling fluids
- E21B21/066—Separating solids from drilling fluids with further treatment of the solids, e.g. for disposal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/12—Drying solid materials or objects by processes not involving the application of heat by suction
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Molecular Biology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Engineering & Computer Science (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Drilling And Boring (AREA)
Abstract
The invention discloses a drilling cuttings liquid-containing decrement device based on pulsating negative pressure and vibration screening, which comprises a screen box, an excitation motor, a screen, a vacuum hose, a vacuum disc, a gas-liquid separator, a vertical pipe, a negative pressure fan, a vacuum pressure limiting valve, an electric three-way valve and an oil mist separator, wherein when the electric three-way valve rotates continuously, an air suction port of the negative pressure fan is alternately communicated with the oil mist separator and the atmosphere to form pulsating negative pressure in the vacuum disc, and drilling fluid rapidly penetrates through the screen under the combined action of vibration and the pulsating negative pressure and is separated out; the invention has the advantages of large processing capacity, long service life of the screen, static sealing of the sealing part, good sealing property, low cost, low energy consumption, good safety and obviously reduced liquid content of discharged drilling cuttings.
Description
Technical Field
The invention belongs to the technical field of solid phase control of petroleum drilling, and particularly relates to a drilling cutting liquid-containing decrement device based on pulse negative pressure and vibration screening.
Background
The existing solid phase control technology for petroleum drilling generally adopts vibration screening to remove most of drilling cuttings carried out from drilling fluid returned from the underground, the volume content of the drilling fluid in the separated drilling cuttings is as high as 60-80%, the loss of the drilling fluid is large, the subsequent environment-friendly treatment workload of the drilling cuttings is large, and the treatment cost is high. In order to reduce the liquid content of the separated drill cuttings, several companies around the world have conducted research on the related art. Norwegian MUDCUBE company develops a drilling fluid solid-liquid separation device based on a vacuum filtration continuous circulation screen, so that the volume liquid content of the separated drill cuttings can be reduced to below 40%, and the drilling fluid solid-liquid separation device has a good effect. In order to recover as much of the expensive oil-based drilling fluid as possible from the cuttings separated by the shaker during drilling, the company SWACO in the united states developed a pulsed vacuum drilling fluid separation device whose basic technical principles are: a vacuum disc is not installed below a first screen at the outlet end of a traditional drilling vibrating screen, compressed air is utilized to supply air to a jet pump in a pulse mode, pulsating vacuum is formed below the screen, drilling cuttings to be discharged on the screen are dried, the volume liquid content of the separated drilling cuttings can be reduced to be below 40%, compressed air consumption is high, using cost is high, and when the flow rate of drilling fluid is large, the liquid content of the separated drilling cuttings is also high. The domestic Tangshan crown can control and research and develop a vibrating screen which is consistent with the working principle of a pulse vacuum drilling fluid separation device of the American SWACO company. In order to ensure that the liquid content of the drill cuttings is reduced to below 40% even when the flow rate of the drilling fluid is large, a drilling cuttings liquid content reducing device based on pulse negative pressure and vibration screening is particularly provided.
Disclosure of Invention
The invention aims to: the drilling cuttings liquid-containing reduction device based on the pulsating negative pressure and the vibration screening can overcome the defects that the liquid content of the drilling cuttings discharged by the existing drilling vibration screen is high, the screen life of a continuous circulation screen drilling fluid solid-liquid separation device adopting vacuum filtration is short, the cost is high and the like.
The technical scheme adopted by the invention is as follows:
A drilling cutting liquid-containing reduction device based on pulse negative pressure and vibration screening comprises a screen box, an excitation motor, a screen, a vacuum hose, a vacuum disc, a gas-liquid separator, a vertical pipe, a negative pressure fan, a vacuum pressure limiting valve, an electric three-way valve and an oil-mist separator.
The vacuum disc is arranged at the lower parts of two screen meshes close to the outlet of the screen surface, rubber strips for sealing are arranged at the contact parts between the vacuum disc and the screen meshes along the circumferential direction, the lower parts of the vacuum discs are connected with a vacuum hose, the other ends of the vacuum hose are connected with the inlet of the gas-liquid separator, a vertical pipe is arranged at the upper part of the gas-liquid separator, an oil mist separator is fixedly arranged at the upper part of the vertical pipe, an exhaust port of a negative pressure fan can be communicated with the atmosphere, a silencer can also be arranged, a vacuum pressure limiting valve is arranged at an air suction port of the negative pressure fan and then connected with one connector of the electric three-way valve, one of the other two connectors of the.
In the working process, when the electric three-way valve communicates the air suction port of the negative pressure fan with the oil mist separator, negative pressure is formed in the oil mist separator, the gas-liquid separator, the vacuum hose, the vacuum disc and the vertical pipe, and when the electric three-way valve communicates the air suction port of the negative pressure fan with the atmosphere, the oil mist separator, the gas-liquid separator, the vacuum hose, the vacuum disc and the vertical pipe are at atmospheric pressure; when the electric three-way valve continuously rotates, the suction port of the negative pressure fan is alternately communicated with the oil mist separator and the atmosphere, so that the pulsating negative pressure in the vacuum disc is formed. When negative pressure is formed in the vacuum disc, drilling fluid on the screen surface is accelerated to penetrate through the screen under the action of pressure difference, air also penetrates through the screen and enters the gas-liquid separator together with the drilling fluid, gas and liquid entering the gas-liquid separator are separated under the action of gravity and the negative pressure, the liquid is discharged through a liquid discharge port A at the lower part of the gas-liquid separator, and the gas enters a negative pressure fan through the vertical pipe, the oil-mist separator and the electric three-way valve and then is discharged into the atmosphere; when the oil-based drilling fluid is used for drilling, the gas separated from the gas-liquid separator contains high-concentration oil mist, and when the gas passes through the oil mist separator, the oil mist in the air is separated to form liquid drops, and the liquid drops flow back to the gas-liquid separator and are discharged together with the drilling fluid from a liquid discharge port A at the lower part.
In the working process, the screen box is driven to do reciprocating motion in the horizontal direction and the vertical direction by the exciting force generated by the exciting motor, the drilling fluid which returns from the underground and carries drill cuttings enters the upper surface of the screen cloth fixedly arranged on the screen box from the feeding end of the screen box, the liquid level surface on the screen cloth at the feeding end is high, the drilling fluid rapidly penetrates through the screen cloth under the action of vibration in the vertical direction, and meanwhile, part of the drilling fluid and the drill cuttings are conveyed to the outlet end along the screen surface under the action of vibration in the horizontal direction; when part of drilling fluid and drill cuttings conveyed along the screen surface reach the second screen surface close to the outlet end, the drilling fluid quickly penetrates through the screen under the combined action of vibration and pulsating negative pressure, and the drill cuttings are separated.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that: the liquid content of the discharged drill cuttings is obviously reduced; the processing capacity is large; the service life of the screen is long; the sealing part is static seal, and the sealing performance is good; the cost is low and the energy consumption is low; the safety is good.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be described below.
Fig. 1 is a schematic diagram of a drilling cutting liquid-containing decrement device based on pulsating negative pressure and vibration screening.
The labels in the figure are: 1-sieve box, 2-exciting motor, 3-screen, 4-vacuum hose, 5-vacuum tray, 6-gas-liquid separator, 7-vertical pipe, 8-negative pressure fan, 9-pressure limiting valve, 10-electric three-way valve, 11-oil mist separator.
Detailed Description
The features and properties of the present invention are described in further detail below with reference to examples.
The drilling cutting liquid-containing decrement device based on the pulse negative pressure and the vibration screening comprises a screen box 1, a vibration excitation motor 2, a screen 3, a vacuum hose 4, a vacuum disc 5, a gas-liquid separator 6, a vertical pipe 7, a negative pressure fan 8, a vacuum pressure limiting valve 9, an electric three-way valve 10 and an oil mist separator 11.
The gas-liquid separator 6 and the negative pressure fan 8 are fixed on the frame, and the screen box 1 is supported on the frame by a damping spring.
The vacuum disc 5 is arranged at the lower parts of the two screen meshes 3 close to the outlet of the screen surface, and the rubber strips with sealing function are arranged at the contact parts between the vacuum disc 5 and the screen meshes 3 along the circumferential direction.
The lower part of the vacuum disc 5 is connected with a vacuum hose 4, the other end of the vacuum hose 4 is connected with an inlet of a gas-liquid separator 6, a vertical pipe 7 is arranged at the upper part of the gas-liquid separator 6, and an oil mist separator 11 is fixedly arranged at the upper part of the vertical pipe 7.
the exhaust port of the negative pressure fan 8 can be directly communicated with the atmosphere, and a silencer can also be arranged; a vacuum pressure limiting valve 9 is installed at an air suction port of the negative pressure fan 8 and is connected with one joint of an electric three-way valve 10, one of the other two joints of the electric three-way valve 10 is communicated with the atmosphere, and the other joint is connected with an upper outlet of an oil mist separator 11.
The screen box (1), the excitation motor (2) and the screen (3) adopt the same structure as the existing vibrating screen.
The negative pressure fan (8) can also adopt a vacuum pump.
The oil mist separator (11) can be used for oil-based mud and also for water-based mud.
The gas-liquid separator (6) can automatically discharge liquid and can also discharge liquid forcibly.
When the vertical pipe (7) adopts a rigid structure, the oil-mist separator (11) can be directly arranged on the vertical pipe (7); when the vertical pipe (7) adopts a flexible structure, the oil-mist separator is arranged on the frame.
In the working process, when the electric three-way valve 10 communicates the air suction port of the negative pressure fan 8 with the oil mist separator 11, negative pressure is formed in the oil mist separator 11, the gas-liquid separator 6, the vacuum hose 4, the vacuum disc 5 and the vertical pipe 7, and when the electric three-way valve 10 communicates the air suction port of the negative pressure fan 8 with the atmosphere, the atmosphere pressure is formed in the oil mist separator 11, the gas-liquid separator 6, the vacuum hose 4, the vacuum disc 5 and the vertical pipe 7; when the electric three-way valve 10 is continuously rotated, the suction port of the negative pressure fan 8 is alternately communicated with the oil mist separator 11 and the atmosphere, and a pulsating negative pressure in the vacuum pan 5 is formed. When negative pressure is formed in the vacuum disc 5, drilling fluid on the screen surface penetrates through the screen 3 at an accelerated speed under the action of pressure difference, air also penetrates through the screen 3 and enters the gas-liquid separator 6 together with the drilling fluid, gas and liquid entering the gas-liquid separator 6 are separated under the action of gravity and the negative pressure, the liquid is discharged through a liquid discharge port A at the lower part of the gas-liquid separator 6, and the gas enters the negative pressure fan 8 through the vertical pipe 7, the oil mist separator 11 and the electric three-way valve 10 and then is discharged into the atmosphere. When the oil-based drilling fluid is used for drilling, the gas separated from the gas-liquid separator 6 contains high-concentration oil mist, when the gas passes through the oil mist separator 11, the oil mist in the air is separated to form liquid drops, the liquid drops flow back to the gas-liquid separator 6, and the liquid drops are discharged together with the drilling fluid from the liquid discharge port A at the lower part, so that potential safety hazards and pollution to the working environment, which are possibly caused by direct discharge, are avoided.
In the working process, the screen box 1 is driven to do reciprocating motion in the horizontal direction and the vertical direction by the exciting force generated by the exciting motor 2, the drilling fluid which returns from the underground and carries drill cuttings enters the screen 3 fixedly arranged on the screen box 1 from the feeding end of the screen box, the liquid level surface on the screen 3 at the feeding end is high, the drilling fluid rapidly penetrates through the screen 3 under the action of vibration in the vertical direction, and meanwhile, part of the drilling fluid and the drill cuttings are conveyed to the outlet end along the screen surface under the action of vibration in the horizontal direction; when part of drilling fluid and drill cuttings conveyed along the screen surface reach the surface of the second screen 3 close to the outlet end, the drilling fluid quickly penetrates through the screen 3 under the combined action of vibration and pulsating negative pressure, and the drill cuttings are separated.
Claims (6)
1. A drilling cutting liquid-containing decrement device based on pulsating negative pressure and vibration screening is characterized by comprising a screen box (1), an excitation motor (2), screen meshes (3), a vacuum hose (4), a vacuum disc (5), a gas-liquid separator (6), a vertical pipe (7), a negative pressure fan (8), a vacuum pressure limiting valve (9), an electric three-way valve (10) and an oil mist separator (11), wherein the gas-liquid separator (6) and the negative pressure fan (8) are fixed on a rack, the screen box (1) is supported on the rack by a damping spring, the vacuum disc (5) is arranged at the lower parts of two screen meshes (3) close to an outlet of a screen surface, a rubber strip for sealing is arranged at the contact part between the vacuum disc (5) and the screen meshes (3) along the circumferential direction, the lower part of the vacuum disc (5) is connected with the vacuum hose (4), and the other end of the vacuum hose (4) is connected with an inlet of the gas, the vertical pipe (7) is arranged at the upper part of the gas-liquid separator (6), the oil mist separator (11) is fixedly arranged at the upper part of the vertical pipe (7), an exhaust port of the negative pressure fan (8) can be communicated with the atmosphere, a silencer can also be configured, a vacuum pressure limiting valve (9) is arranged at an air suction port of the negative pressure fan (8), and then the vacuum pressure limiting valve is connected with one joint of the electric three-way valve (10), one of the other two joints of the electric three-way valve (10) is communicated with the atmosphere, and the other one of the other two joints is connected with an upper outlet of.
2. The drilling cuttings liquid-containing decrement device based on the pulsating negative pressure and the vibration screening is characterized in that the screen box (1), the excitation motor (2) and the screen cloth (3) are of the same structure as that of the existing vibration screen.
3. The drilling cuttings liquid-containing decrement device based on the pulsating negative pressure and the vibratory screening is characterized in that the negative pressure fan (8) can be replaced by a vacuum pump.
4. The drilling cuttings liquid-containing weight reduction device based on pulsating negative pressure and vibratory screening as claimed in claim 1, wherein the oil mist separator (11) can be used for oil-based mud and water-based mud.
5. The drilling cuttings liquid-containing decrement device based on the pulsating negative pressure and the vibratory screening as claimed in claim 1, wherein the gas-liquid separator (6) can automatically drain liquid and can also forcibly drain liquid.
6. The drilling cuttings liquid-containing decrement device based on the pulsating negative pressure and the vibratory screening as claimed in claim 1, characterized in that when the vertical pipe (7) is of a rigid structure, the oil-mist separator (11) can be directly installed on the vertical pipe (7); when the vertical pipe (7) adopts a flexible structure, the oil-mist separator is arranged on the frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910965075.6A CN110578484B (en) | 2019-10-11 | 2019-10-11 | Drilling cuttings contain liquid decrement device based on pulsation negative pressure and vibration screening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910965075.6A CN110578484B (en) | 2019-10-11 | 2019-10-11 | Drilling cuttings contain liquid decrement device based on pulsation negative pressure and vibration screening |
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| Publication Number | Publication Date |
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| CN110578484A true CN110578484A (en) | 2019-12-17 |
| CN110578484B CN110578484B (en) | 2024-06-28 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112516661A (en) * | 2021-01-21 | 2021-03-19 | 成都西部石油装备股份有限公司 | Electric high-frequency vibration negative pressure sieve bed |
| CN112696161A (en) * | 2021-03-24 | 2021-04-23 | 西南石油大学 | Negative pressure generating and gas-liquid separating integrated negative pressure well drilling vibrating screen |
| CN113144722A (en) * | 2021-04-06 | 2021-07-23 | 广汉市阿里圣姆石油设备有限公司 | Negative pressure vibrating screen |
| CN113309915A (en) * | 2021-07-28 | 2021-08-27 | 四川宝石机械专用车有限公司 | High-frequency vibration's sound sealing connection structure |
| CN113318500A (en) * | 2021-08-02 | 2021-08-31 | 四川宝石机械专用车有限公司 | Pulsation drilling fluid vibrating screen |
| CN113318538A (en) * | 2021-08-02 | 2021-08-31 | 四川宝石机械专用车有限公司 | Negative pressure vibrating screen gas circuit pulse device |
| CN113550705A (en) * | 2021-09-23 | 2021-10-26 | 西南石油大学 | Pulse negative pressure well drilling vibrating screen |
| CN115707851A (en) * | 2021-08-19 | 2023-02-21 | 中国石油天然气集团有限公司 | Negative pressure drilling fluid rock debris separator |
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