CN104727769A - Drilling fluid screening work process based on gas circulation system - Google Patents
Drilling fluid screening work process based on gas circulation system Download PDFInfo
- Publication number
- CN104727769A CN104727769A CN201510070431.XA CN201510070431A CN104727769A CN 104727769 A CN104727769 A CN 104727769A CN 201510070431 A CN201510070431 A CN 201510070431A CN 104727769 A CN104727769 A CN 104727769A
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- CN
- China
- Prior art keywords
- gas
- drilling fluid
- hydrogen sulfide
- slurries
- sulphur removal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000005553 drilling Methods 0.000 title claims abstract description 32
- 239000012530 fluid Substances 0.000 title claims abstract description 27
- 238000012216 screening Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000007789 gas Substances 0.000 claims abstract description 49
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims abstract description 34
- 239000011261 inert gas Substances 0.000 claims abstract description 32
- 239000002002 slurry Substances 0.000 claims abstract description 31
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000005864 Sulphur Substances 0.000 claims abstract description 24
- 239000002699 waste material Substances 0.000 claims abstract description 20
- 230000003009 desulfurizing effect Effects 0.000 claims description 22
- 238000007873 sieving Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 238000011084 recovery Methods 0.000 claims description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- 239000008187 granular material Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- 230000006378 damage Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- E21B21/067—Separating gases from drilling fluids
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a drilling fluid screening work process based on a gas circulation system. The drilling fluid screening work process based on the gas circulation system resolves the problem that oil drilling fluid screening equipment in the prior art is not suitable for an oil field with high sulphur content and prone to damaging safety of operators. The drilling fluid screening work process based on the gas circulation system includes the following steps that (1) slurry is pumped into a closed screening device through a slurry drainage pump, and inert gas is injected into the closed screening device from an inert gas storage bottle through a conveying pump; (2) the slurry is screened into recycled slurry and waste particles through the closed screening device, and meanwhile the injected inert gas separates and replaces hydrogen sulfide from the recycled slurry; (3) the separated hydrogen sulfide is led into a sulphur removal device for sulphur removal through a gas outlet of the closed screening device, and the gas obtained after sulphur removal returns to the closed screening device through a gas inlet of the closed screening device. The drilling fluid screening work process based on the gas circulation system has the advantages of being safe to operate, being environmentally friendly, saving the cost, improving the sulphur removal effect and the like.
Description
Technical field
The present invention relates to petroleum drilling technology field, particularly a kind of sieving drilling fluid method.
Background technology
Oil drilling slurry vibrosieve 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 technician.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 sieving drilling fluid workflow based on gas-circulating system 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:
Based on the sieving drilling fluid workflow of gas-circulating system, comprise the following steps:
(1) mud is by discharge opeing slush pump suction Sealed sifting device, is filled with in Sealed sifting device by inert gas by delivery pump from inert gas storage bottle;
(2) by Sealed sifting device, mud shaker is divided into recovery slurries and waste granules, meanwhile, by the inert gas be filled with, the hydrogen sulfide gas reclaimed in slurries separation is replaced out;
(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 port of Sealed sifting device.
The present invention is by the circulation of gas and then the contact avoiding hydrogen sulfide gas and operating personnel, effectively prevent hydrogen sulfide gas to the injury of human body, meanwhile, effectively avoid air to contact with hydrogen sulfide gas by arranging of gas-circulating system, reduce the incidence of security incident.
By being filled with inert gas in Sealed sifting device, and gas forms the circulating 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.
Preferred as one, Sealed sifting device described in described step (1) is by closed box, be arranged on closed box inside and the vibrosieve subnetting be obliquely installed, be arranged on the collecting pit immediately below vibrosieve subnetting, be arranged on the mixing plant in collecting pit, and be arranged on immediately below vibrosieve subnetting least significant end side and spiral chip removal machine composition for granular wastes being discharged closed box; Described charging aperture, discharging opening, air inlet port and gas outlet are all arranged on closed box.
For the ease of operation, 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.
Further, specific works flow process in described step (2) is as follows: mud is sieved into by the Screening Network in Sealed sifting device and reclaims slurries and waste granules, reclaiming slurries flows in collecting pit, and the granular wastes sieved out is then discharged in Sealed sifting device by spiral chip removal machine; By mixing plant the recovery slurries in collecting pit stirred and then effectively the hydrogen sulfide gas reclaimed in slurries separated.
As one preferably set-up mode, the desulfurizing device in described step (3), by housing, is arranged on the sulphur removal liquid composition in housing; Described air inlet, discharge opening, venthole and charging hole are all arranged on housing, and the air inlet in this desulfurizing device stretches in sulphur removal liquid.
Further, described sulphur removal liquid is NaOH.
As the selection of optimum, the inert gas in described step (1) is argon gas.
The present invention compared with prior art, has the following advantages and beneficial effect:
1, the present invention is by the circulation of gas and then the contact avoiding hydrogen sulfide gas and operating personnel, effectively prevents hydrogen sulfide gas to the injury of human body;
2, the present invention can also effectively avoid air to contact with hydrogen sulfide gas by being circularly set of gas, reduces the incidence of security incident;
3, the present invention by being filled with inert gas in Sealed sifting device, and gas forms the circulating 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;
4, the hydrogen sulfide in mud can also be replaced out by inert gas of the present invention substantially, and then effectively improves the efficiency of hydrogen sulfide in removing mud.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of Sealed sifting device in the present invention.
Fig. 3 is the structural representation of desulfurizing device in the present invention.
Wherein, the component name that in figure, Reference numeral is corresponding is called:
1-discharge opeing slush pump, 2-Sealed sifting device, 3-desulfurizing device, 4-material collecting device, 5-inert gas storage bottle, 6-delivery pump, 7-flap valve;
20-waste outlet, 21-charging aperture, 22-discharging opening, 23-air inlet port, 24-gas outlet, 25-closed box, 26-vibrosieve subnetting, 27-collecting pit, 28-mixing plant, 29-spiral chip removal machine;
31-air inlet, 32-discharge opening, 33-venthole, 34-charging hole, 35-housing, 36-sulphur removal liquid.
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
Based on the sieving drilling fluid workflow of gas-circulating system, comprise the following steps:
(1) mud is by discharge opeing slush pump suction Sealed sifting device, is filled with in Sealed sifting device by inert gas by delivery pump from inert gas storage bottle;
(2) by Sealed sifting device, mud shaker is divided into recovery slurries and waste granules, meanwhile, by the inert gas be filled with, the hydrogen sulfide gas reclaimed in slurries separation is replaced out;
(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 port of Sealed sifting device.
The workflow capital equipment sieved in the present invention comprises discharge opeing slush pump 1, Sealed sifting device 2, desulfurizing device 3 and inert gas storage bottle 5, and as shown in Figure 1, Figure 2 and Figure 3, its concrete annexation is as follows:
As shown in Figure 1, described Sealed sifting device 2 has charging aperture 21, discharging opening 22, air inlet port 23 and gas outlet 24.Described desulfurizing device 3 has air inlet 31, discharge opening 32, venthole 33 and charging hole 34.
Described discharge opeing slush pump 1 is communicated with charging aperture 21; Described gas outlet 24 is communicated with air inlet 31 by carrier pipe, and described air inlet port 23 is also communicated with venthole 33 by carrier pipe; And inert gas storage bottle 5 is communicated with on the carrier pipe between air inlet port 23 and venthole 33, this inert gas storage bottle 5 is communicated with carrier pipe by delivery pump 6.
Gas outlet 24 in this Sealed sifting device 2 is communicated with the air inlet 31 of desulfurizing device 3, the venthole 33 of this desulfurizing device 3 is communicated with the air inlet port 23 in Sealed sifting device 2, and namely gas forms a circulating system between desulfurizing device 3 and Sealed sifting device 2.
By delivery pump 6, inert gas in inert gas storage bottle 5 is filled with in Sealed sifting device 2 in the present invention, and gas forms the circulating 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.
Described discharge opeing slush pump is preferably BW-250 type slush pump.Described inert gas is preferably argon gas.
Embodiment 2
The present embodiment optimizes the concrete structure of Sealed sifting device 2 in step (1) on the basis of embodiment 1, and its concrete set-up mode is as follows:
In the present embodiment, this Sealed sifting device 2 is by closed box 25, be arranged on closed box 25 inside and the vibrosieve subnetting 26 be obliquely installed, be arranged on the collecting pit 27 immediately below vibrosieve subnetting 26, be arranged on the mixing plant 28 in collecting pit 27, and be arranged on immediately below vibrosieve subnetting 26 least significant end side and spiral chip removal machine 29 for granular wastes being discharged closed box 25 forms; Described charging aperture 21, discharging opening 22, air inlet port 23 and gas outlet 24 are all arranged on closed box 25.
The charging aperture 21 of described Sealed sifting device 2 is positioned at directly over vibrosieve subnetting 26 most significant end side, and discharging opening 22 and air inlet port 23 are all positioned at the bottom of collecting pit, and 24, gas outlet is positioned at the top of closed box 25.
In the present embodiment, in this step (2), the specific works process of mud in Sealed sifting device 2 is as follows:
Mud, by the Screening Network in Sealed sifting device, is sieved into and reclaims slurries and waste granules, and reclaim slurries and flow in collecting pit, the granular wastes sieved out is then discharged in Sealed sifting device by spiral chip removal machine; Stirred the recovery slurries in collecting pit by mixing plant, owing to having passed into inert gas while stirring, thus the hydrogen sulfide gas reclaimed in slurries can be effectively separated by inert gas.
Embodiment 3
The present embodiment optimizes the concrete structure of desulfurizing device 3 in step (3) on the basis of embodiment 1, and concrete set-up mode is as follows:
Described desulfurizing device 3 is by housing 35, and the sulphur removal liquid 36 be arranged in housing 35 forms; Described air inlet 31, discharge opening 32, venthole 33 and charging hole 34 are all arranged on housing 35, and the air inlet 31 in this desulfurizing device 3 stretches in sulphur removal liquid 36.
The air inlet 31 of described desulfurizing device 3 and discharge opening 32 lay respectively at the both sides, bottom of desulfurizing device 3, and the venthole 33 of described desulfurizing device 3 and charging hole 34 lay respectively at the both sides, top of desulfurizing device 3.
In the present invention, 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 4
The difference of the present embodiment and embodiment 1 or 2 or 3 is only, described closed box 25 is also provided with a waste outlet 20 be communicated with the discharging opening of spiral chip removal machine 29, and this waste outlet 20 is also connected with a material collecting device 4.Air inlet port 23 position of this Sealed sifting device 2 is also provided with flap valve 7.
In order to sulfur limitation effect of the present invention of breaking forth, The present invention gives control group, its concrete operation step is as follows: on the basis of embodiment 1, eliminate the step that mixing plant stirs the recovery slurries in collecting pit, does not pass into inert gas simultaneously.
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 is 313ppm, the hydrogen sulfide content reclaiming slurries in embodiment 1 is 201ppm, the hydrogen sulfide content reclaiming slurries in embodiment 2 is 42ppm, the hydrogen sulfide content reclaiming slurries in embodiment 3 is 42ppm, and the hydrogen sulfide content reclaiming slurries in embodiment 4 is 37ppm.
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 (7)
1., based on the sieving drilling fluid workflow of gas-circulating system, it is characterized in that: comprise the following steps:
(1) mud is by discharge opeing slush pump suction Sealed sifting device, is filled with in Sealed sifting device by inert gas by delivery pump from inert gas storage bottle;
(2) by Sealed sifting device, mud shaker is divided into recovery slurries and waste granules, meanwhile, by the inert gas be filled with, the hydrogen sulfide gas reclaimed in slurries separation is replaced out;
(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 port of Sealed sifting device.
2. the sieving drilling fluid workflow based on gas-circulating system according to claim 1, it is characterized in that: the Sealed sifting device described in described step (1) is by closed box, be arranged on closed box inside and the vibrosieve subnetting be obliquely installed, be arranged on the collecting pit immediately below vibrosieve subnetting, be arranged on the mixing plant in collecting pit, and be arranged on immediately below vibrosieve subnetting least significant end side and spiral chip removal machine composition for granular wastes being discharged closed box; Described charging aperture, discharging opening, air inlet port and gas outlet are all arranged on closed box.
3. the sieving drilling fluid workflow based on gas-circulating system according to claim 2, 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.
4. the sieving drilling fluid workflow based on gas-circulating system according to claim 3, is characterized in that: the specific works flow process in described step (2) is as follows:
Mud is sieved into by the Screening Network in Sealed sifting device and reclaims slurries and waste granules, and reclaim slurries and flow in collecting pit, the granular wastes sieved out is then discharged in Sealed sifting device by spiral chip removal machine; By mixing plant the recovery slurries in collecting pit stirred and then effectively the hydrogen sulfide gas reclaimed in slurries separated.
5. the sieving drilling fluid workflow based on gas-circulating system according to claim 1, is characterized in that: the desulfurizing device in described step (3), by housing, is arranged on the sulphur removal liquid composition in housing; Described air inlet, discharge opening, venthole and charging hole are all arranged on housing, and the air inlet in this desulfurizing device stretches in sulphur removal liquid.
6. the sieving drilling fluid workflow based on gas-circulating system according to claim 5, is characterized in that: described sulphur removal liquid is NaOH.
7. the sieving drilling fluid workflow based on gas-circulating system according to any one of claim 1 ~ 6, is characterized in that: the inert gas in described step (1) is argon gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510070431.XA CN104727769A (en) | 2015-02-11 | 2015-02-11 | Drilling fluid screening work process based on gas circulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510070431.XA CN104727769A (en) | 2015-02-11 | 2015-02-11 | Drilling fluid screening work process based on gas circulation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104727769A true CN104727769A (en) | 2015-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510070431.XA Pending CN104727769A (en) | 2015-02-11 | 2015-02-11 | Drilling fluid screening work process based on gas circulation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104727769A (en) |
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2015
- 2015-02-11 CN CN201510070431.XA patent/CN104727769A/en active Pending
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150624 |
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| WD01 | Invention patent application deemed withdrawn after publication |