CN104707387A - Sulfur removal method of closed vibrating screen for high sulfur oil-gas fields - Google Patents
Sulfur removal method of closed vibrating screen for high sulfur oil-gas fields Download PDFInfo
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- CN104707387A CN104707387A CN201510070887.6A CN201510070887A CN104707387A CN 104707387 A CN104707387 A CN 104707387A CN 201510070887 A CN201510070887 A CN 201510070887A CN 104707387 A CN104707387 A CN 104707387A
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Abstract
The invention discloses a sulfur removal method of a closed vibrating screen for high sulfur oil-gas fields, and mainly solves the problem that existing petroleum drilling fluid screening equipment is not suitable for the high sulfur oil-gas fields. The sulfur removal method comprises the following steps: (1) pumping slurry into a closed screening device through a drain slurry pump, and screening the slurry through a screening mesh in the screening device; (2) enabling screened recycled slurry to flow into a collection pool, and discharging particle waste screened out into the closed screening device through a screw chip conveyor; stirring the recycled slurry in the collection pool through a stirring device, introducing inert gas while stirring, and separating hydrogen sulfide gas in the recycled slurry through the inert gas; (3) introducing the separated hydrogen sulfide gas into a sulfur removal device for sulfur removal through an air outlet of the closed screening device, and returning the gas subjected to sulfur removal into the closed screening device through an air inlet of the closed screening device. The sulfur removal method has the advantages of safe operation, environmental protection, cost reduction and the like.
Description
Technical field
The present invention relates to petroleum drilling technology field, particularly a kind of Deal With Drilling Fluid equipment.
Background technology
Oil drilling slurry vibratory sieve is the visual plant reducing solid concentration in drilling fluid.Be recycled to the drilling fluid on ground from down-hole, first through mud vibrating screen, the solid particle that diameter is larger will be removed, just can enter desander or desilter, reduce solid concentration further.
In high Oil & gas field in sulfur drilling well, be recycled in the drilling fluid on ground containing more hydrogen sulfide.After drilling fluid arrives ground, hydrogen sulfide is separated from drilling fluid, threatens the personal safety of drilling engineering technical staff.Safe, the exploration and development efficiently of drilling fluid height Oil & gas field in sulfur are one of technical barriers of facing of recent domestic drilling engineering.In order to reduce the harm of hydrogen sulfide, key is design production sealing and circulating drilling fluid treatment system.Airtight mud vibrating screen is the visual plant of solids control in sealing and circulating drilling fluid treatment system.
Hydrogen sulfide is colourless gas, has rotten-egg odour, and it belongs to inflammable harmful influence, forms explosive mixture with air mixing energy, and chance naked light, high heat energy cause combustion explosion.
Summary of the invention
The object of the invention is to solve prior art PetroChina Company Limited. sieving drilling fluid equipment and be not suitable for the high oil field of sulfur content, the problem of easy harm operator manual security, provides the process for sulfur removal of high Oil & gas field in sulfur enclosed vibratory screen of a kind of handling safety, cheap, environmental protection and energy saving.
For solving above-mentioned shortcoming, technical scheme of the present invention is as follows:
The process for sulfur removal of high Oil & gas field in sulfur enclosed vibratory screen, comprises the following steps;
(1) mud is by discharge opeing slush pump suction Sealed sifting device, and mud is sieved by the Screening Network in screening plant;
(2) the recovery slurries sieved out flow in collecting pit, and the granular wastes sieved out is then discharged in Sealed sifting device by spiral chip removal machine; By making agitating device stir the recovery slurries in collecting pit, while stirring, passing into inert gas, by inert gas, the hydrogen sulfide gas reclaimed in slurries being separated;
(3) isolated hydrogen sulfide gas is passed in desulfurizing device by the gas outlet of Sealed sifting device and carries out sulphur removal, and the gas after sulphur removal is then turned back in Sealed sifting device by the air inlet of Sealed sifting device.
By being filled with inert gas in Sealed sifting device, and gas forms the circulatory system in the apparatus of the present: invention, by both actings in conjunction, not only effectively can reduce the incidence of security incident,, also inert gas can be recycled meanwhile, reduce cost and drop into, and the hydrogen sulfide in mud can also be replaced out by inert gas substantially, and then effectively improve the efficiency of hydrogen sulfide in removing mud.
Being circularly set simultaneously by gas, effectively reduces the time of contact of hydrogen sulfide gas and operating personnel, and then prevents hydrogen sulfide gas to the injury of human body, avoid air to contact with hydrogen sulfide gas simultaneously, avoid the generation of security incident.
The most preferably set-up mode, described Sealed sifting device is by the closed box with charging aperture, discharging opening, air inlet and gas outlet, be arranged on the vibratory sieve subnetting that closed box inner inclination is arranged, be arranged on the collecting pit immediately below vibratory sieve subnetting, be arranged on the agitating device in collecting pit, and be arranged on the spiral chip removal machine composition immediately below vibratory sieve subnetting least significant end side.
Further, the charging aperture of described Sealed sifting device is positioned on the closed box directly over vibratory sieve subnetting most significant end side, and discharging opening is positioned at the bottom of collecting pit, and gas outlet is positioned at the top of closed box.
Further, described closed box is also provided with a waste outlet be communicated with the discharging opening of spiral chip removal machine, and this waste outlet is also connected with a material collecting device.
As wherein a kind of set-up mode, described desulfurizing device is by the housing with air inlet, discharging opening, gas outlet and charging aperture, and be arranged on the sulphur removal liquid composition in housing, the air inlet in this desulfurizing device stretches in sulphur removal liquid.
Further, described sulphur removal liquid is NaOH.
Further, the air inlet of described desulfurizing device and discharging opening lay respectively at the both sides, bottom of desulfurizing device, and the gas outlet of described desulfurizing device and charging aperture then lay respectively at the both sides on desulfurizing device top.
Preferred as one, described inert gas is argon gas.
The present invention compared with prior art, has the following advantages and beneficial effect:
1, the present invention is led to be filled with inert gas in Sealed sifting device, and gas forms the circulatory system in the apparatus of the present: invention, by both actings in conjunction, not only effectively can reduce the incidence of security incident,, also inert gas can be recycled meanwhile, reduce cost and drop into;
2, the hydrogen sulfide in mud can also be replaced out by inert gas by the present invention substantially, and then effectively improves the efficiency of hydrogen sulfide in removing mud;
3, the present invention's being circularly set by gas, effectively reduces the time of contact of hydrogen sulfide gas and operating personnel, and then prevents hydrogen sulfide gas to the injury of human body, avoid air to contact with hydrogen sulfide gas simultaneously, avoid the generation of security incident;
4, handling safety of the present invention, cost-saving, environmental protection, is applicable to applying very much.
Accompanying drawing explanation
Fig. 1 is process chart of the present invention.
Fig. 2 is the structural representation of Sealed sifting device in the present invention.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing thereof, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment 1
The process for sulfur removal of high Oil & gas field in sulfur enclosed vibratory screen, as shown in Figure 1, comprises the following steps;
(1) mud is by discharge opeing slush pump suction Sealed sifting device, and mud is sieved by the Screening Network in screening plant;
(2) the recovery slurries sieved out flow in collecting pit, and the granular wastes sieved out is then discharged in Sealed sifting device by spiral chip removal machine; By making agitating device stir the recovery slurries in collecting pit, while stirring, passing into inert gas, by inert gas, the hydrogen sulfide gas reclaimed in slurries being separated;
(3) isolated hydrogen sulfide gas is passed in desulfurizing device by the gas outlet of Sealed sifting device and carries out sulphur removal, and the gas after sulphur removal is then turned back in Sealed sifting device by the air inlet of Sealed sifting device.
Wherein, the concrete structure of discharge opeing slush pump used in the present invention, Sealed sifting device, desulfurizing device is as follows:
Described discharge opeing slush pump is preferably BW-250 type slush pump.
Described Sealed sifting device, as shown in Figure 2, by the closed box with charging aperture, discharging opening, air inlet and gas outlet, be arranged on the vibratory sieve subnetting that closed box inner inclination is arranged, be arranged on the collecting pit immediately below vibratory sieve subnetting, be arranged on the agitating device in collecting pit, and be arranged on the spiral chip removal machine composition immediately below vibratory sieve subnetting least significant end side.The charging aperture of described Sealed sifting device is positioned on the closed box directly over vibratory sieve subnetting most significant end side, and discharging opening is positioned at the bottom of collecting pit, and gas outlet is positioned at the top of closed box.
Described desulfurizing device is by the housing with air inlet, discharging opening, gas outlet and charging aperture, and be arranged on the sulphur removal liquid composition in housing, the air inlet in this desulfurizing device stretches in sulphur removal liquid.Described sulphur removal liquid is NaOH.The air inlet of described desulfurizing device and discharging opening lay respectively at the both sides, bottom of desulfurizing device, and the gas outlet of described desulfurizing device and charging aperture then lay respectively at the both sides on desulfurizing device top.
The concrete annexation of above-mentioned discharge opeing slush pump, Sealed sifting device, desulfurizing device is as follows:
This discharge opeing slush pump is communicated with the charging aperture of Sealed sifting device, gas outlet in this Sealed sifting device is communicated with the air inlet of desulfurizing device, the gas outlet of this desulfurizing device is communicated with the air inlet in Sealed sifting device, and namely gas forms a circulatory system between desulfurizing device and Sealed sifting device.
The charging aperture of this desulfurizing device is used for passing into sulphur removal liquid, and the discharging opening of this desulfurizing device is then for the discharge of sulphur removal liquid after sulphur removal.In the present invention, this sulphur removal liquid is preferably NaOH.
Embodiment 2
The difference of the present embodiment and embodiment 1 is only, described closed box is also provided with a waste outlet be communicated with the discharging opening of spiral chip removal machine, and this waste outlet is also connected with a material collecting device.Described inert gas is argon gas.
In order to can to sulfur limitation effect of the present invention of breaking forth, The present invention gives control group one, control group two and control group three, its concrete operation step be as follows:
Control group one is on the basis of embodiment 1, eliminate the step that agitating device stirs the recovery slurries in collecting pit, does not pass into inert gas simultaneously;
Control group two is on the basis of embodiment 1, eliminate the step that agitating device stirs the recovery slurries in collecting pit, but needs to pass into inert gas;
Control group three is on the basis of embodiment 1, maintain the step that agitating device stirs the recovery slurries in collecting pit, but does not pass into inert gas.
By carrying out hydrogen sulfide content detection to mud and recovery slurries, draw following result:
In mud, hydrogen sulfide content is 850ppm, the hydrogen sulfide content reclaiming slurries in control group one is 313ppm, the hydrogen sulfide content reclaiming slurries in control group two is 253ppm, the hydrogen sulfide content reclaiming slurries in control group three is 231ppm, the hydrogen sulfide content reclaiming slurries in embodiment 1 is 42ppm, and the hydrogen sulfide content reclaiming slurries in embodiment 2 is 42ppm.
Above-described embodiment is only the preferred embodiments of the present invention, not limiting the scope of the invention, as long as adopt design principle of the present invention, and the change carried out non-creativeness work on this basis and make, all should belong within protection scope of the present invention.
Claims (8)
1. the process for sulfur removal of high Oil & gas field in sulfur enclosed vibratory screen, is characterized in that: comprise the following steps;
(1) mud is by discharge opeing slush pump suction Sealed sifting device, and mud is sieved by the Screening Network in screening plant;
(2) the recovery slurries sieved out flow in collecting pit, and the granular wastes sieved out is then discharged in Sealed sifting device by spiral chip removal machine; By making agitating device stir the recovery slurries in collecting pit, while stirring, passing into inert gas, by inert gas, the hydrogen sulfide gas reclaimed in slurries being separated;
(3) isolated hydrogen sulfide gas is passed in desulfurizing device by the gas outlet of Sealed sifting device and carries out sulphur removal, and the gas after sulphur removal is then turned back in Sealed sifting device by the air inlet of Sealed sifting device.
2. the process for sulfur removal of high Oil & gas field in sulfur enclosed vibratory screen according to claim 1, it is characterized in that: described Sealed sifting device is by the closed box with charging aperture, discharging opening, air inlet and gas outlet, be arranged on the vibratory sieve subnetting that closed box inner inclination is arranged, be arranged on the collecting pit immediately below vibratory sieve subnetting, be arranged on the agitating device in collecting pit, and be arranged on the spiral chip removal machine composition immediately below vibratory sieve subnetting least significant end side.
3. the process for sulfur removal of high Oil & gas field in sulfur enclosed vibratory screen according to claim 2, it is characterized in that: the charging aperture of described Sealed sifting device is positioned on the closed box directly over vibratory sieve subnetting most significant end side, discharging opening is positioned at the bottom of collecting pit, and gas outlet is positioned at the top of closed box.
4. the process for sulfur removal of high Oil & gas field in sulfur enclosed vibratory screen according to claim 3, it is characterized in that: described closed box is also provided with a waste outlet be communicated with the discharging opening of spiral chip removal machine, and this waste outlet is also connected with a material collecting device.
5. the process for sulfur removal of the high Oil & gas field in sulfur enclosed vibratory screen according to any one of Claims 1 to 4, it is characterized in that: described desulfurizing device is by the housing with air inlet, discharging opening, gas outlet and charging aperture, be arranged on the sulphur removal liquid composition in housing, the air inlet in this desulfurizing device stretches in sulphur removal liquid.
6. the process for sulfur removal of high Oil & gas field in sulfur enclosed vibratory screen according to claim 5, is characterized in that: described sulphur removal liquid is NaOH.
7. the process for sulfur removal of high Oil & gas field in sulfur enclosed vibratory screen according to claim 6, it is characterized in that: the air inlet of described desulfurizing device and discharging opening lay respectively at the both sides, bottom of desulfurizing device, and the gas outlet of described desulfurizing device and charging aperture then lay respectively at the both sides on desulfurizing device top.
8. the process for sulfur removal of high Oil & gas field in sulfur enclosed vibratory screen according to claim 5, is characterized in that: described inert gas is argon gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510070887.6A CN104707387A (en) | 2015-02-11 | 2015-02-11 | Sulfur removal method of closed vibrating screen for high sulfur oil-gas fields |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510070887.6A CN104707387A (en) | 2015-02-11 | 2015-02-11 | Sulfur removal method of closed vibrating screen for high sulfur oil-gas fields |
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| CN104707387A true CN104707387A (en) | 2015-06-17 |
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| CN201510070887.6A Pending CN104707387A (en) | 2015-02-11 | 2015-02-11 | Sulfur removal method of closed vibrating screen for high sulfur oil-gas fields |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111101898A (en) * | 2020-01-07 | 2020-05-05 | 中石化石油工程技术服务有限公司 | Sulphur device is scraped in steel wire operation of ultra-deep high sulphur gas well test-well |
-
2015
- 2015-02-11 CN CN201510070887.6A patent/CN104707387A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111101898A (en) * | 2020-01-07 | 2020-05-05 | 中石化石油工程技术服务有限公司 | Sulphur device is scraped in steel wire operation of ultra-deep high sulphur gas well test-well |
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Application publication date: 20150617 |