CN104806183A - Oil field well washing backflow fluid depressurization and muddy sand removal device - Google Patents
Oil field well washing backflow fluid depressurization and muddy sand removal device Download PDFInfo
- Publication number
- CN104806183A CN104806183A CN201410032608.2A CN201410032608A CN104806183A CN 104806183 A CN104806183 A CN 104806183A CN 201410032608 A CN201410032608 A CN 201410032608A CN 104806183 A CN104806183 A CN 104806183A
- Authority
- CN
- China
- Prior art keywords
- tank
- depressurization
- oil
- settling tank
- pipe valve
- 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.)
- Granted
Links
- 239000004576 sand Substances 0.000 title claims abstract description 43
- 239000012530 fluid Substances 0.000 title claims abstract description 16
- 238000005406 washing Methods 0.000 title abstract 6
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 239000010865 sewage Substances 0.000 claims abstract description 17
- 238000011010 flushing procedure Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims description 25
- 239000013049 sediment Substances 0.000 claims description 13
- 230000008676 import Effects 0.000 claims description 8
- 238000011109 contamination Methods 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 230000003139 buffering effect Effects 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 5
- 230000001174 ascending effect Effects 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 abstract description 3
- 230000009977 dual effect Effects 0.000 abstract 2
- 230000000694 effects Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 239000003129 oil well Substances 0.000 description 3
- 239000002332 oil field water Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 239000002699 waste material 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
-
- 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
-
- 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
- E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
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)
- Cyclones (AREA)
- Sewage (AREA)
Abstract
The invention discloses an oil field well washing backflow fluid depressurization and muddy sand removal device. The oil field well washing backflow fluid depressurization and muddy sand removal device is characterized in that a depressurization and muddy sand removal tank is a rectangular tank, the surface of the rectangular tank is provided with a high pressure liquid inlet, a depressurization and sand removal pond sewage removal manhole, a settling pond sewage removal manhole, a depressurization and muddy sand removal tank liquid outlet, a back flush port, a settling pond sewage removal port, an oil receiving and gas exhausting dual purpose port, a depressurization and sand removal pond overflow depressurization oil receiving port, a sewage discharge port, a sand discharge port, a liquid level meter, a depressurization and sand removal pond overhaul manhole and a settling pond overhaul manhole, the rectangular tank is equipped with a drainage liquid lifting and back flushing dual purpose pump, a vortex depressurization sand remover is placed in a tank pond, reduces high pressure to normal pressure once, and can simultaneously perform solid-liquor separation and oil, gas and water separation, the tank of the oil field well washing backflow fluid depressurization and muddy sand removal device overflows and depressurizes in two in and six out mode, and can not cause a pressure keeping phenomenon, and therefore the oil field well washing backflow fluid depressurization and muddy sand removal device is safe and reliable to use, high in depressurization speed, and good in muddy sand removal effect, and can be widely used in sand washing and well flushing of oil and water wells in oil fields and treatment of backflow fluid of fracture wells.
Description
Technical field
The present invention relates to a kind of oil field flushing and return discharge opeing step-down except device for silt, especially oilfield oil well sand-flushing, fractured well return the step-down of discharge opeing except device for silt.
Background technology
At present, when the sand-flushing of oil field sand output well and fracture in oil and water wells liquid return row, because returning, the pressure of discharge opeing is high, silt content directly cannot enter greatly reuse after treating apparatus process, on-the-spot adopt digs pond, underground more, high pressure sand-flushing and fracture in oil and water wells being returned row enters in underground pond containing silt particle liquid, by evaporate air-dry after the mode process of burying, but this method is large to the pollution of environment, is the key link of contaminated environment in oilfield development process.
For addressing this problem, recycling after making it to turn waste into wealth, once pressure and temperature reducing control valve (CN202884084U)+skid Multifunctional integrated oil-field water treating apparatus was selected to carry out the test of oilfield oil well sand-flushing and fracturing outlet liquid process, because the pressure and temperature reducing control valve starting point is single buffering step-down, have that discharge opeing sand content is high because of returning, pressure reduction is large to its erosion failure greatly for this reason, in a large number sand enter aftertreatment device and be difficult to discharge and cause the problem of accumulated plugging not to be resolved.
Summary of the invention
In order to overcome when pressure and temperature reducing control valve carries out oilfield oil well sand-flushing and fracturing outlet liquid process can only step-down can not the deficiency of sediment outflow, the oil field flushing that the invention provides a kind of new structure returns discharge opeing step-down except device for silt, high pressure once can not only be dropped to normal pressure by this device, and the sand in liquid can be separated and discharge, effectively prevent from sand from entering skid Multifunctional integrated oil-field water treating apparatus to result in blockage the generation of phenomenon, and can guarantee that the safety and steady of device runs.
The technical solution adopted for the present invention to solve the technical problems is: it is rectangle tank body that step-down removes silt particle tank, tank body side is provided with high pressure inlet, step-down desanding basin removes contamination manhole, settling tank removes contamination manhole, offside is provided with liquid outlet, backwash mouth, step-down desanding basin overflow pressure relief receiving port, step-down desanding basin sewage draining exit, step-down desanding basin sand removing hole and settling tank sewage draining exit, side is provided with content gauge, top is provided with step-down desanding basin inspection manhole, settling tank inspection manhole, the dual-purpose mouth of settling tank receipts oil exhaust, and is furnished with discharge opeing lifting and the dual-purpose pump of backwash.
The present invention solves another technical scheme that its technical problem adopts: step-down is provided with step-down desanding basin and settling tank except in silt particle tank, between two ponds by large baffle, flow guiding inclined plate, cleaning hose, filter sand sieve plate and small baffle separately; The inclined settling tank side of large baffle, small baffle inclined step-down desanding basin side, flow guiding inclined plate is located at below large baffle, and filter sand sieve plate is located at the side of the inclined step-down desanding basin of small baffle, and cleaning hose is located between filter sand sieve plate and small baffle; Large baffle, flow guiding inclined plate and filter sand sieve plate are even welding as one, and small baffle is independent plate; Step-down desanding basin internal upper part periphery is provided with overflow pressure relief collection tank, and groove has overflow pressure relief and receives oil-piping layout, and be also provided with eddy current step-down desander in pond, in the middle part of eddy current step-down desander, neighboring is provided with strenthening member, and lower outer periphery is provided with fixed support component; Content gauge connected entrance in settling tank is provided with filter sand screen drum.
The present invention solves another technical scheme again that its technical problem adopts: eddy current step-down desander profile is rounded cylindrical, and bottom is cone cylinder, and the cone end is provided with sediment outflow conduit; Middle part is cylinder, and be welded with buffering step-down collection sand baffle plate ascending, in barrel from low to high, cylinder middle and lower part tangent line is provided with high pressure feed liquor conduit; Top is platform cylinder, and lower large little, suitable for reading is liquid outlet.
The invention has the beneficial effects as follows: eddy current step-down desander is placed in tank pond by device; double shielding use safety; once by high pressure drop to normal pressure; and solid-liquor separation can be carried out simultaneously be separated with oil, gas, water; isolated silt particle and oil gas are discharged continuously, improve compliance and the safety of device widely.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further detailed explanation.
Fig. 1 is the three-dimensional combination figure of invention;
Fig. 2 is the front view of invention;
Fig. 3 is the top view of invention;
Fig. 4 is the front view that step-down removes silt particle tank;
Fig. 5 is the top view that step-down removes silt particle tank;
Fig. 6 is the sectional drawing that step-down removes silt particle tank;
Fig. 7 is the outline drawing of eddy current step-down desander;
Fig. 8 is the partial sectional view of eddy current step-down desander.
In figure, 1. step-downs are except silt particle tank, 2. settling tank blowdown pipe valve, 3. fluid pipe valve, 4. receive the dual-purpose pipe valve of oil exhaust, 5. content gauge, 6. high pressure feed liquor pipe valve, 7. overflow pressure relief collection tube, 8. backwash pipe valve, 9. step-down desanding basin sediment outflow pipe valve, 10. pump fluid pipe valve, 11. blowdown mains, 12. pumps, 13. settling tank inspection manholes, 14. step-down desanding basin inspection manholes, 15. step-downs are except silt particle tank backwash mouth, 16. settling tank sewage draining exits, 17. step-downs are except silt particle tank liquid outlet, 18. settling tanks receive the dual-purpose mouth of oil exhaust, 19. step-down desanding basin overflow pressure relief receiving ports, 20. step-down desanding basin sewage draining exits, 21. step-down desanding basin sand removing holes, 22. settling tanks, 23. settling tanks are removed contamination manhole, 24. high pressure inlets, 25. step-down desanding basins are removed contamination manhole, 26. step-down desanding basins, 27. small baffles, 28. cleaning hoses, 29. filter sand sieve plates, 30. flow guiding inclined plates, 31. large baffles, 32. filter sand screen drums, 33. overflow pressure relief collection tanks, 34. overflow pressure reliefs receive oil-piping layout, 35. eddy current step-down desanders, 36. strenthening members, 37. eddy current step-down desander high pressure feed liquor conduits, 38. fixed support components, 39. eddy current step-down desander sediment outflow conduits, 40. eddy current step-down desander liquid outlets, 41. eddy current step-down desander buffering step-down collection sand baffle plates.
Detailed description of the invention
In Fig. 1,2,3,4,5, step-down is exported be connected (oil water well production tree does not draw) by the discharge opeing of returning of high pressure feed liquor pipe valve (6) and oil water well production tree except the high pressure inlet (24) of silt particle tank (1), step-down is removed silt particle tank liquid outlet (17) and is connected by the import of fluid pipe valve (3) with pump (12), step-down is removed silt particle tank backwash mouth (15) and is connected with pump fluid pipe valve (10) by backwash pipe valve (8), and pump fluid pipe valve is connected (aftertreatment device does not draw) with the import of aftertreatment device; Settling tank sewage draining exit (16) is connected with blowdown main (11) by settling tank blowdown pipe valve (2), and settling tank is received the oil dual-purpose mouth of exhaust (18) and is connected with settling tank blowdown pipe valve (2) by receiving the oil dual-purpose pipe valve of exhaust (4); Step-down desanding basin overflow pressure relief receiving port (19) is connected with blowdown main (11) by overflow pressure relief collection tube (7), step-down desanding basin sand removing hole (21) is connected with the import of silt particle retracting device (silt particle retracting device does not draw) by step-down desanding basin sediment outflow pipe valve (9), and step-down desanding basin sewage draining exit (20) is connected with the import of the oily sewage collection system of follow-up receipts (the oily sewage collection system of follow-up receipts does not draw) by blowdown main (11).
In Fig. 6,7,8, the interior overflow pressure relief of step-down desanding basin (26) is received oil-piping layout (34) upper end and is communicated with overflow pressure relief collection tank (33), and lower end is communicated with overflow pressure relief receiving port (19); Eddy current step-down desander high pressure feed liquor conduit (37) is communicated with high pressure inlet (24), and eddy current step-down desander sediment outflow conduit (39) is communicated with step-down desanding basin sand removing hole (21).
Oil field flushing returns the method for operation of discharge opeing step-down except device for silt, the high pressure feed liquor pipe valve (6) of device and oil water well production tree are returned discharge opeing to export and connect, open the high pressure valve on high pressure feed liquor pipe valve, liquid valve on fluid pipe valve (3), fuel tap is received in the exhaust of receiving on the oil dual-purpose pipe valve of exhaust (4), sediment outflow control valve on step-down desanding basin sediment outflow pipe valve (9), then slowly open production tree and return discharge opeing discharge control valve to device feed liquor, in the eddy current step-down desander (35) of high pressure sand-laden fluid body first in access to plant, carry out buffering step-down and eddy current except silt particle, silt particle passes through sediment outflow conduit (39) from step-down desanding basin sand removing hole (21) drain tank, liquid screws out from liquid outlet (40) and enters in step-down desanding basin, oil and gas enter overflow pressure relief collection tank (33) by the current oil receiver venting conduit (34) that overflows from overflow pressure relief receiving port (19) drain tank, enter in settling tank (22) by the liquid after filter sand sieve plate (29) filters, observing sand removing hole and go out silt particle situation, by regulating sediment outflow control valve to observe content gauge (5), controlling the liquid level rate of climb, during liquid level rising 2/3rds height, start pump (12) to follow-up treating apparatus feed flow, flow-control is at 30m
3within/h, control production tree simultaneously and return discharge opeing outlet valve, the sediment outflow of view apparatus and receipts oil mass size, rise to the highest by liquid level in tank, the tank body two of device enters six and goes out the generation that can not cause the phenomenon that builds the pressure, safe and reliable, and pressure decay rate is fast, except silt particle is effective.
Claims (2)
1. an oil field flushing returns discharge opeing step-down except device for silt, it is characterized in that: step-down is exported be connected by the discharge opeing of returning of high pressure feed liquor pipe valve (6) and oil water well production tree except the high pressure inlet (24) of silt particle tank (1), step-down is removed silt particle tank liquid outlet (17) and is connected by the import of fluid pipe valve (3) with pump (12), step-down is removed silt particle tank backwash mouth (15) and is connected with pump fluid pipe valve (10) by backwash pipe valve (8), pump fluid pipe valve is connected with the import of aftertreatment device, settling tank sewage draining exit (16) is connected with blowdown main (11) by settling tank blowdown pipe valve (2), settling tank is received the oil dual-purpose mouth of exhaust (18) and is connected with settling tank blowdown pipe valve (2) by receiving the oil dual-purpose pipe valve of exhaust (4), step-down desanding basin overflow pressure relief receiving port (19) is connected with blowdown main (11) by overflow pressure relief collection tube (7), step-down desanding basin sand removing hole (21) is connected with the import of silt particle retracting device by step-down desanding basin sediment outflow pipe valve (9), step-down desanding basin sewage draining exit (20) is connected by the import of blowdown main (11) with the oily sewage collection system of follow-up receipts,
It is rectangle tank body that described step-down removes silt particle tank (1), tank body side is provided with high pressure inlet (24), step-down desanding basin is removed contamination manhole (25), settling tank is removed contamination manhole (23), offside is provided with liquid outlet (17), backwash mouth (15), step-down desanding basin overflow pressure relief receiving port (19), step-down desanding basin sewage draining exit (20), step-down desanding basin sand removing hole (21) and settling tank sewage draining exit (16), side is provided with content gauge (5), top is provided with step-down desanding basin inspection manhole (14), settling tank inspection manhole (13), settling tank receives the oil dual-purpose mouth of exhaust (18),
Described step-down is provided with step-down desanding basin (26) and settling tank (22) except in silt particle tank (1), by large baffle (31) between two ponds, flow guiding inclined plate (30), cleaning hose (28), filter sand sieve plate (29) and small baffle (27) are separately, the inclined settling tank side of large baffle, small baffle inclined step-down desanding basin side, flow guiding inclined plate is located at below large baffle, filter sand sieve plate is located at the side of the inclined step-down desanding basin of small baffle, cleaning hose is located between filter sand sieve plate and small baffle, large baffle, flow guiding inclined plate and filter sand sieve plate are even welding as one, small baffle is independent plate, step-down desanding basin internal upper part periphery is provided with overflow pressure relief collection tank (33), groove has overflow pressure relief and receives oil-piping layout (34), eddy current step-down desander (35) is also provided with in pond, in the middle part of eddy current step-down desander, neighboring is provided with strenthening member (36), lower outer periphery is provided with fixed support component (38), content gauge connected entrance in settling tank is provided with filter sand screen drum (32).
2. eddy current step-down desander according to claim 1, it is characterized in that: eddy current step-down desander profile is rounded cylindrical, bottom is cone cylinder, the cone end, is provided with sediment outflow conduit (39), and middle part is cylinder, is welded with buffering step-down collection sand baffle plate (41) ascending, in barrel from low to high, cylinder middle and lower part tangent line is provided with high pressure feed liquor conduit (37), top is platform cylinder, and lower large little, suitable for reading is liquid outlet (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410032608.2A CN104806183B (en) | 2014-01-23 | 2014-01-23 | Oil field flushing returns discharge opeing blood pressure lowering except device for silt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410032608.2A CN104806183B (en) | 2014-01-23 | 2014-01-23 | Oil field flushing returns discharge opeing blood pressure lowering except device for silt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104806183A true CN104806183A (en) | 2015-07-29 |
| CN104806183B CN104806183B (en) | 2017-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410032608.2A Active CN104806183B (en) | 2014-01-23 | 2014-01-23 | Oil field flushing returns discharge opeing blood pressure lowering except device for silt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104806183B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386747A (en) * | 2015-12-01 | 2016-03-09 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Circulating sand-liquid recovery system and recovery method |
| CN107842329A (en) * | 2016-09-20 | 2018-03-27 | 中国石油化工股份有限公司 | A kind of profit sand separating apparatus and method |
| CN108150118A (en) * | 2017-12-26 | 2018-06-12 | 中国石油大学(华东) | drilling fluid quantitative degasser |
| CN109184599A (en) * | 2018-08-22 | 2019-01-11 | 中国石油天然气股份有限公司 | Well-flushing returns processing unit and its processing method |
| CN114165178A (en) * | 2021-11-01 | 2022-03-11 | 中石化四机石油机械有限公司 | Integrated treatment device for reverse drainage of desander |
| CN116733396A (en) * | 2023-08-11 | 2023-09-12 | 四川奥达测控装置有限公司 | Drilling outlet flow monitoring and well control overflow and leakage early warning system and method |
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- 2014-01-23 CN CN201410032608.2A patent/CN104806183B/en active Active
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| CN2533252Y (en) * | 2001-12-07 | 2003-01-29 | 辽河石油勘探局锦州工程技术处 | Sand removal discharging device for sand washing operation of oil and water wells |
| CN201543330U (en) * | 2009-09-15 | 2010-08-11 | 濮阳市东昊机械电子有限公司 | Sand cleaning fluid disposal ledge |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386747A (en) * | 2015-12-01 | 2016-03-09 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Circulating sand-liquid recovery system and recovery method |
| CN105386747B (en) * | 2015-12-01 | 2018-07-20 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of circulating sand liquid recovery system and recovery method |
| CN107842329A (en) * | 2016-09-20 | 2018-03-27 | 中国石油化工股份有限公司 | A kind of profit sand separating apparatus and method |
| CN108150118A (en) * | 2017-12-26 | 2018-06-12 | 中国石油大学(华东) | drilling fluid quantitative degasser |
| CN108150118B (en) * | 2017-12-26 | 2020-02-18 | 中国石油大学(华东) | Drilling fluid quantitative degasser |
| CN109184599A (en) * | 2018-08-22 | 2019-01-11 | 中国石油天然气股份有限公司 | Well-flushing returns processing unit and its processing method |
| CN114165178A (en) * | 2021-11-01 | 2022-03-11 | 中石化四机石油机械有限公司 | Integrated treatment device for reverse drainage of desander |
| CN116733396A (en) * | 2023-08-11 | 2023-09-12 | 四川奥达测控装置有限公司 | Drilling outlet flow monitoring and well control overflow and leakage early warning system and method |
| CN116733396B (en) * | 2023-08-11 | 2023-10-31 | 四川奥达测控装置有限公司 | Drilling outlet flow monitoring and well control overflow and leakage early warning system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104806183B (en) | 2017-04-05 |
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Effective date of registration: 20231228 Address after: 277200 Henghai Chuangzhi Park, 160 meters east of the intersection of 320 Provincial Highway and Shanwang Road, Shanting Economic Development Zone, Zaozhuang City, Shandong Province Patentee after: Shandong Senjiehu Environmental Protection Equipment Co.,Ltd. Address before: No. 2299 Yikang Avenue South Road, Tengzhou City, Zaozhuang City, Shandong Province, 277500 Patentee before: SHANDONG HYGIYA ENVIRONMENTAL PROTECTION EQUIPMENT Co.,Ltd. |