CN101832116A - Oil-containing drilling-cutting countercurrent washing deoiling treatment device - Google Patents
Oil-containing drilling-cutting countercurrent washing deoiling treatment device Download PDFInfo
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- CN101832116A CN101832116A CN 201010161329 CN201010161329A CN101832116A CN 101832116 A CN101832116 A CN 101832116A CN 201010161329 CN201010161329 CN 201010161329 CN 201010161329 A CN201010161329 A CN 201010161329A CN 101832116 A CN101832116 A CN 101832116A
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Abstract
The invention discloses an oil-containing drilling-cutting countercurrent washing deoiling treatment device which comprises: (a) a first-stage, a second-stage and a third-stage washing devices, wherein each stage washing device comprises a washer and a centrifugal machine, wherein the bottom of the washer is provided with a drilling cutting and solvent inlet, and the top thereof is provided with a washing liquid outlet; the centrifugal machine is connected with the washing liquid outlet of the washer; and the drilling cutting inlet of the first-stage washer is sequentially connected with a first-stage conveying device; (b) a return tank and a rectifying tower, wherein the return tank is connected with a condenser on the top; the bottom of the rectifying tower is connected with a reboiler; and an outlet on the top of the rectifying tower is connected with an inlet of a solvent tank by the condenser. Compared with the prior art, the device can wash oil-containing drilling-cutting for three times, leads the moving direction of the drilling-cutting to be opposite to that of the solvent, and improves the solvent efficiency and the washing effect.
Description
Technical field
The present invention relates to a kind of de-oiling treating apparatus, relate in particular to oil-containing drilling-cutting countercurrent washing deoiling treatment device.
Background technology
In the oil and gas prospect development process, in operation process such as deep-well, horizontal well, bad ground, use oil-base mud to replace water-base mud to carry out drillng operation and have many superiority.But the use meeting of oil-base mud produces a large amount of drilling cuttings that contains base oil at drilling process and brings many environmental problems, must effectively handle and satisfy laws and regulations and social desirability.
In the drilling wastes management process, we can select the multiple technologies scheme according to operating environment.Burning, pyrolysis absorption, curing and stabilization technology, biodegradation technique, re-injection technology etc., still, these technology have a common shortcoming can not effectively reclaim base oil in the drilling cuttings.In waste management " 4R " principle that we follow, circulation and reutilization technology scheme are paid the utmost attention to and are selected.In the treatment and disposal drilling cuttings, reclaim and recycling wherein base oil is the key character of our this technology.
Although the solid control system of front end improves constantly solid-liquid separation efficiency, generally about 15-30%, base oil costs an arm and a leg the oil content of oil-contained drilling cuttings, it is effectively reclaimed can produce very high economic benefit, reduces the loss and operating cost.The viscosity of oil-base mud is big, and adhesiveness is strong, the drilling cuttings fine size, so be difficult to remove with the method for machinery.
Effective oil-containing drilling-cutting countercurrent washing deoiling treatment device is not also arranged at present.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, provide a kind of and can guarantee the drilling cuttings qualified discharge, guarantee that simultaneously base oil effectively separates, improves the oil-containing drilling-cutting countercurrent washing deoiling treatment device of solvent efficiency and clean result with solvent.
In order to achieve the above object, oil-containing drilling-cutting countercurrent washing deoiling treatment device of the present invention, it comprises:
(a) one-level, secondary and three grades of washer devices, described every grade of washer device comprises that a bottom is provided with the washer that drilling cuttings and colvent inlet and top are provided with the cleaning solution outlet, a desk centrifuge that links to each other with described washer cleaning solution outlet, described one-level washer drilling cuttings inlet links to each other with the one-level conveying device successively, described one-level, secondary is passed through in the solid phase outlet of secondary and three grades of centrifuges respectively, three grades and level Four conveying device and secondary, the inlet of three grades of washers and a dryer links to each other, described one-level, the colvent inlet of secondary and three grades of washers is respectively by being equipped with one-level on it, secondary, the pipeline of three grades of solvent pumps and secondary, the liquid phase outlet of three grades of centrifuges and the outlet of solvent tank link to each other, and the gaseous phase outlet of dryer links to each other with the inlet of described solvent tank by heat exchanger;
(b) return tank that the top is connected with condenser, links to each other with described condenser, the bottom is connected with the rectifying column of reboiler, the tower top outlet of this rectifying column links to each other with the inlet of described solvent tank by described condenser, the liquid phase outlet of described first-stage centrifugal machine links to each other with the feeding mouth of rectifying column by the material pipeline, the tower bottom outlet of reboiler links to each other with the base oil heat exchanger by flowline, and described reboiler links to each other with the thermal source heat exchanger.
Apparatus of the present invention are compared with the prior art: oil-contained drilling cuttings divides three washings in this device, and the direction of motion of drilling cuttings is opposite with the direction of motion of solvent, improves solvent efficiency and clean result.
Description of drawings
Fig. 1 is the system schematic of oil-containing drilling-cutting countercurrent washing deoiling treatment device of the present invention;
Fig. 2 is that oil-contained drilling cuttings shown in Figure 1 moves the three-dimensional mounting structure schematic diagram of disposing module;
Fig. 3 is the structural representation of the pulse tube that adopts in the treating apparatus shown in Figure 1.
The specific embodiment
Describe the present invention below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, oil-containing drilling-cutting countercurrent washing deoiling of the present invention is handled the device that adopts and is comprised: (a) one-level, secondary and three grades of washers 4,7,9, every grade of washer all is to adopt to comprise that a bottom is provided with the washer that drilling cuttings and colvent inlet and top are provided with the cleaning solution outlet, one-level, secondary, three grades of washers 4,7,9 cleaning solution outlet is connected with first-stage centrifugal machine 5 respectively, secondary centrifuge 8, three grades of centrifuges 10, the drilling cuttings inlet of one-level washer 4 links to each other with one-level conveying device 3, one-level, secondary and three grades of centrifuges 5,8, secondary is passed through in 9 solid phase outlet respectively, three grades and level Four conveying device 12,13,14 and secondary, three grades of washers 7, the inlet of 9 and dryers 11 links to each other, one-level, secondary and three grades of washers 4,7,9 colvent inlet is respectively by being equipped with one-level on it, secondary, three grades of solvent pumps 15,16,17 pipeline and secondary, three grades of centrifuges 8,10 the liquid phase outlet and the outlet of solvent tank 1 link to each other, and the gaseous phase outlet of dryer 11 links to each other with the inlet of solvent tank 1 by second heat exchanger 19; (b) rectifying column 6, rectifying column 6 tops are connected with condenser 24, condenser 24 links to each other with return tank 21 by the 3rd heat exchanger 20, rectifying column 6 bottoms are connected with reboiler 22, the tower top outlet of rectifying column 6 links to each other with the inlet of solvent tank 1 by condenser 24, the liquid phase outlet of first-stage centrifugal machine 5 links to each other with first heat exchanger 18 by the material pipeline, the outlet of first heat exchanger 18 links to each other with the feeding mouth of rectifying column 6, and the tower bottom outlet of reboiler 22 links to each other with base oil heat exchanger 23 by flowline.
As shown in Figure 2, this device also comprises one three story frame structure, one-level, secondary and three grades of solvent pumps 15,16,17, one-level, secondary, three grades, level Four conveying device 3,12,13,14 and one-level, secondary, three grades of centrifuges 5,8,9 are arranged on the first floor of frame construction, first heat exchanger 18 and the dryer 11 of reboiler 22 at the bottom of the tower of rectifying column 6 and reboiler 22 are arranged on the second layer of frame construction, the overhead condenser 24 of rectifying column 6, return tank 21 that links to each other with condenser 24 and the heat exchanger 19 that links to each other with dryer 11, base oil heat exchanger 23 and solvent tank 1 are arranged on the 3rd layer of frame construction, one-level, secondary and three grades of washers 4,7,9 are arranged on the first floor and the second layer, and rectifying column 6 is arranged on three layers of the first floors to the.The major advantage of such structure setting is that floor space and space hold are little, is convenient to move to different job sites and environment, improves the service efficiency of equipment, reduces the cost of discarded object transhipment, thereby reduces the cost of offal treatment.
As shown in Figure 3, above-mentioned one-level washer 4, two-stage scrubber 7 and three grades of washers 9 adopt the pulse tube washer, and this pulse tube washer includes cleaning mixture outlet a1, contains drilling cuttings entry to mixed solution a2 and cleaning solution inlet a3.The pulse tube washer comprises a plurality of reducer pipes that connect successively, and pipe in the middle of each reducer pipe comprises is connected with a Taper Pipe and diameter pipe less than middle pipe respectively in turn at the two ends of middle pipe.Pulse tube washer characteristics are that the expansion that need not stir the tube road is finished with contraction and mixed and washing process.
The centrifuge 5,8,9 that the present invention adopts can be horizontal centrifuge, and first, second, third and fourth grade conveying device 3,12,13,14 can be screw pump, and dryer 11 can be the double helix continuous drier.The once washing agent solvent that adds in the solvent tank 1 is solvent naphtha, benzinum, ethyl acetate, butyl acetate, acetic acid at least a in ester, the n-hexane.
According to said structure, countercurrent washing deoiling treatment method for oil-contained drilling cuttings of the present invention specifically comprises the steps:
(a) in solvent tank 1, add once washing agent solvent;
(b) oil-contained drilling cuttings is sent into the once washing process with its oversize by conveying worm 3 after by vibrosieve 2 screening;
(c) the once washing process comprises from one-level washer 4 bottoms injection secondary washing liquid solvent and above-mentioned oil-contained drilling cuttings oversize, oil-contained drilling cuttings oversize and secondary washing liquid solvent are after one-level washer 4 mixes, washs, and outflow directly enters first-stage centrifugal machine 5 so that drilling cuttings is separated with oil with solvent continuously;
(d) will send into the liquid phase that secondary washing process and its liquid phase outlet opening discharge from the drilling cuttings that the solid phase outlet opening of first-stage centrifugal machine 5 is discharged and send into rectifying column 6;
(e) the secondary washing process comprises that 5 drilling cuttings and three cleaning solutions of discharging are molten from the injection of two-stage scrubber 7 bottoms from the first-stage centrifugal machine, the drilling cuttings of discharging from first-stage centrifugal machine 5 and three cleaning solutions are dissolved in that two-stage scrubber 7 mixes, after the washing, outflow directly enters secondary centrifuge 8 so that drilling cuttings is separated with oil with solvent continuously; The liquid phase that the drilling cuttings that secondary centrifuge 8 solid phase outlet openings are discharged enters three grades of washing process while liquid phase outlet openings enters the one-level washing process as secondary washing liquid solvent;
(f) three grades of washing process comprise and inject the drilling cuttings of discharging from secondary centrifuge 8 from three grades of washer 9 bottoms and from the once washing liquid solvent of solvent tank 1, the drilling cuttings of discharging from secondary centrifuge 8 and from the once washing liquid solvent of solvent tank 1 mix at three grades of washers 9, after the washing, outflow directly enters three grades of centrifuges 10 so that drilling cuttings is separated with oil with solvent continuously; The liquid phase that the drilling cuttings that three grades of centrifuge 10 solid phase outlet openings are discharged enters the liquid phase outlet opening of drying unit 11 and three grades of centrifuges 10 enters the secondary washing process as three cleaning solution solvents, and the solid phase that discharge 11 dry backs, drying unit is sent into solvent tank 1 as once washing liquid solvent for the gas phase that the cleaning drilling cuttings will produce simultaneously through cooling within it;
(g) liquid phase of discharging from first-stage centrifugal machine 5 liquid phase outlet openings is the mixed liquor of solvent and base oil, mixed liquor is sent into rectifying column 6, process rectifying separates the light fraction liquid phase remittance solvent tank 1 that produces and recycles as once washing liquid solvent, and heavier cut is that base oil recovery storage is used for new drilling fluid preparation.
By adopting above-mentioned three stage countercurrent carrying out washing treatment, can significantly save solvent internal circulating load and consumption, and then the solvent recovery energy consumption of the system of saving.Also significantly improve simultaneously clearance rate and clean result.Experimental result shows that the countercurrent washing system saves solvent about 40%, and system energy consumption reduces 30%, and the oil content of washing back drilling cuttings eases down to about 0.8%, reaches national relevant emission standards.
Claims (6)
1. oil-containing drilling-cutting countercurrent washing deoiling treatment device is characterized in that, comprising:
(a) one-level, secondary and three grades of washer devices, described every grade of washer device comprises that a bottom is provided with the washer that drilling cuttings and colvent inlet and top are provided with the cleaning solution outlet, a desk centrifuge that links to each other with described washer cleaning solution outlet, described one-level washer drilling cuttings inlet links to each other with the one-level conveying device successively, described one-level, secondary is passed through in the solid phase outlet of secondary and three grades of centrifuges respectively, three grades and level Four conveying device and secondary, the inlet of three grades of washers and a dryer links to each other, described one-level, the colvent inlet of secondary and three grades of washers is respectively by being equipped with one-level on it, secondary, the pipeline of three grades of solvent pumps and secondary, the liquid phase outlet of three grades of centrifuges and the outlet of solvent tank link to each other, and the gaseous phase outlet of dryer links to each other with the inlet of described solvent tank by heat exchanger;
(b) return tank that the top is connected with condenser, links to each other with described condenser, the bottom is connected with the rectifying column of reboiler, the tower top outlet of this rectifying column links to each other with the inlet of described solvent tank by described condenser, the liquid phase outlet of described first-stage centrifugal machine links to each other with heat exchanger by the material pipeline, heat exchanger exit links to each other with the feeding mouth of rectifying column, the tower bottom outlet of reboiler links to each other with the base oil heat exchanger by flowline, and described reboiler links to each other with the thermal source heat exchanger.
2. oil-containing drilling-cutting countercurrent washing deoiling treatment device according to claim 1, it is characterized in that: it comprises one three story frame structure, described one-level, secondary and three grades of solvent pumps, one-level, secondary, three grades, level Four conveying device and one-level, secondary, three grades of centrifuges are arranged on the first floor of described frame construction, on the second layer that the thermal source heat exchanger of the tower bottom reboiler of described rectifying column and reboiler and dryer are arranged on described frame construction, the overhead condenser of described rectifying column, return tank that links to each other with described condenser and second heat exchanger that links to each other with dryer, first heat exchanger that links to each other with first conveying device and solvent tank are arranged on the 3rd layer of described frame construction, described one-level, secondary and three grades of washers are arranged on the described first floor and the second layer, and described rectifying column is arranged on three layers of the described first floors to the.
3. oil-containing drilling-cutting countercurrent washing deoiling treatment device according to claim 1, it is characterized in that: described washer is the pulse sluicing pipe, described pulse sluicing pipe comprises a plurality of reducer pipes that connect successively, pipe in the middle of described each reducer pipe comprises, the two ends of pipe are connected with a Taper Pipe and diameter pipe less than pipe in the middle of described respectively in turn in the middle of described.
4. oil-containing drilling-cutting countercurrent washing deoiling treatment device according to claim 1 is characterized in that: described centrifuge is a horizontal centrifuge.
5. oil-containing drilling-cutting countercurrent washing deoiling treatment device according to claim 1 is characterized in that: described first and second conveying device is a screw pump.
6. oil-containing drilling-cutting countercurrent washing deoiling treatment device according to claim 1 is characterized in that: described drying unit is the double helix continuous drier.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010161329 CN101832116A (en) | 2010-04-28 | 2010-04-28 | Oil-containing drilling-cutting countercurrent washing deoiling treatment device |
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| CN 201010161329 CN101832116A (en) | 2010-04-28 | 2010-04-28 | Oil-containing drilling-cutting countercurrent washing deoiling treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404452A (en) * | 2021-07-15 | 2021-09-17 | 重庆森士环保科技有限公司 | Oil liquid recovery unit in drilling oil base mud detritus |
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| CN113404452A (en) * | 2021-07-15 | 2021-09-17 | 重庆森士环保科技有限公司 | Oil liquid recovery unit in drilling oil base mud detritus |
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Application publication date: 20100915 |