CN107902856A - A kind of method of oily sludge recycling - Google Patents
A kind of method of oily sludge recycling Download PDFInfo
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- CN107902856A CN107902856A CN201711172003.3A CN201711172003A CN107902856A CN 107902856 A CN107902856 A CN 107902856A CN 201711172003 A CN201711172003 A CN 201711172003A CN 107902856 A CN107902856 A CN 107902856A
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- Prior art keywords
- oil well
- oily sludge
- oil
- water shutoff
- shutoff agent
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- 239000010802 sludge Substances 0.000 title claims abstract description 62
- 238000004064 recycling Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000003129 oil well Substances 0.000 claims abstract description 133
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 70
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 44
- 239000012535 impurity Substances 0.000 claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 22
- 239000002270 dispersing agent Substances 0.000 claims abstract description 18
- 239000002562 thickening agent Substances 0.000 claims abstract description 18
- 230000035699 permeability Effects 0.000 claims abstract description 17
- 238000012216 screening Methods 0.000 claims abstract description 15
- 238000002347 injection Methods 0.000 claims abstract description 14
- 239000007924 injection Substances 0.000 claims abstract description 14
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 12
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 12
- 239000011651 chromium Substances 0.000 claims abstract description 12
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 239000010949 copper Substances 0.000 claims abstract description 12
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052753 mercury Inorganic materials 0.000 claims abstract description 12
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 12
- 239000011701 zinc Substances 0.000 claims abstract description 12
- 239000010779 crude oil Substances 0.000 claims abstract description 7
- 239000003921 oil Substances 0.000 claims description 50
- 238000002360 preparation method Methods 0.000 claims description 7
- 238000007885 magnetic separation Methods 0.000 claims description 5
- 239000002002 slurry Substances 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 4
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 239000000440 bentonite Substances 0.000 claims description 3
- 229910000278 bentonite Inorganic materials 0.000 claims description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 3
- 229920005610 lignin Polymers 0.000 claims description 3
- 239000010452 phosphate Substances 0.000 claims description 3
- 229920005646 polycarboxylate Polymers 0.000 claims description 3
- 235000010413 sodium alginate Nutrition 0.000 claims description 3
- 229940005550 sodium alginate Drugs 0.000 claims description 3
- 239000000661 sodium alginate Substances 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 229940080314 sodium bentonite Drugs 0.000 claims description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 12
- 230000008901 benefit Effects 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000008398 formation water Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229940092782 bentonite Drugs 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 239000002332 oil field water Substances 0.000 description 1
- 244000039328 opportunistic pathogen Species 0.000 description 1
- 244000045947 parasite Species 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 description 1
- 150000003220 pyrenes Chemical class 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Hydrology & Water Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention belongs to environmental protection technical field, more particularly to a kind of method of oily sludge recycling.This method specifically includes following steps：The pretreatment of oily sludge, removes metal impurities copper, zinc, chromium and mercury；The recycling of metal impurities；Thickener, dispersant and water are added in above-mentioned oily sludge, is uniformly mixing to obtain oilwell water shutoff agent；The screening of oil well；The injection of oilwell water shutoff agent, the high permeability zone that oil well is blocked using oilwell water shutoff agent reaches the plugging function of oil well, so as to improve the yield of oil well crude oil.The present invention not only meets the needs of oilwell water shutoff, while effectively reduces environmental pollution, so that problem of environmental pollution caused by solving row outside oily sludge for a long time and filling.Therefore, present invention is generally applicable in the water-plugging technology of oily sludge recycling treatment and oil well.
Description
Technical field
The present invention relates to a kind of oil field profile control agent and preparation method thereof, more particularly to a kind of oily sludge recycling
Method.
Background technology
Oily sludge refers to idle oil-containing solids and gunk.Oil field mining liquid through techniques such as oil removing, sedimentations at
After reason, one layer of dark thick liquid, i.e. oily sludge can be gradually formed in tank bottom, its main component is water, silt particle, colloidal bitumen
Matter and wax.As China's oil exploitation steps into ultra-high water cut stage, with the use of a variety of chemical assistant co-displacements,
The yield of oily sludge can be continuously increased.Oily sludge has the characteristics that yield is big, oil content is high, heavy oil ingredient height etc., its
In remove containing substantial amounts of noxious material of the remaining alkane oils also containing foul smellings such as benzene homologues, phenols, anthracene, pyrenes；Some ground
Also produce, and be deposited in sludge also with Produced Liquid containing radioactive element in layer；Also containing substantial amounts of disease in oily sludge
The heavy metals such as opportunistic pathogen, parasite, copper, zinc, chromium, mercury.Substantial amounts of oily sludge is bulky, if not handled effectively, not only
A large amount of arable lands are taken, and surrounding soil, water body, air will all be polluted, and there are mud-rock flow hidden danger.At present, oil-containing
Sludge is classified as hazardous waste by country.The processing of oily sludge is also always a great problem for perplexing petroleum and petrochemical industry,
Domestic overwhelming majority oily sludge is deposited in You Qu ground, substantially without utility value.
Oil field water injection well during water flooding recovery generally carries out plugging and profile con-trol to improve water injection capacity using profile control agent.Mesh
Before, profile control agent re-injection underground is made in oily sludge, closure drop ply adjustment intake profile can have not only been played and improve oil displacement efficiency, but also
Environmental problem caused by can largely idle recycling sludge processing be solved.However, in the oil-containing formed with polymer
In produced sludge system, since oily sludge contains substantial amounts of oil and salt so that the performance of polymer gel cannot reach actual
The requirement of application.Therefore, screening and optimizing still needs substantial amounts of research with the polymer gel system that oily sludge is adapted.
The content of the invention
The shortcomings that the purpose of the present invention is for the above-mentioned prior art and deficiency and a kind of oily sludge recycling profit is provided
Then method, the present invention add thickener, dispersant and water and are uniformly mixing to obtain oil well using oily sludge as basic raw material
Water shutoff agent, finally injects oil well and has the function that oilwell water shutoff, so as to improve the yield of oil well crude oil.The present invention is not only met
The needs of oilwell water shutoff, while environmental pollution is effectively reduced, arrange and fill outside oily sludge for a long time so as to solve
Caused by problem of environmental pollution.
The invention discloses a kind of method of oily sludge recycling, it is characterised in that the method is specifically wrapped
Include following steps：
(1) pretreatment of oily sludge
Oily sludge is subjected to magnetic separation, removes metal impurities copper, zinc, chromium and mercury, obtains removing the oil-containing after metal impurities
Sludge.
(2) recycling of metal impurities
The progress of above-mentioned metal impurities is further selected, isolate metallics copper, zinc, chromium and the mercury of recoverable.
(3) preparation of oilwell water shutoff agent
Thickener, dispersant and water are added in above-mentioned oily sludge, is uniformly mixing to obtain oilwell water shutoff agent.
(4) screening of oil well
The screening criteria of oil well is：The reservoir permeability of oil well is more than 500mD, and the oil reservoir layer position of oil well is more than 3 layers, oil well
Reservoir temperature be less than 90 DEG C.
(5) injection of oilwell water shutoff agent
Oilwell water shutoff agent is injected from the oil jacket annular space of oil well, the high permeability zone that oil well is blocked using oilwell water shutoff agent is reached
To the plugging function of oil well, so as to improve the yield of oil well crude oil.
Preferably, the mass ratio of the oily sludge, thickener, dispersant and water is 1: 0.2-0.3: 0.05-0.1
∶1-2。
Preferably, the mixing speed is 200-300rpm.
Preferably, the thickener is one kind in xanthic acid, sodium alginate and bentonite.
Preferably, the dispersant is one kind in lignin salt, polycarboxylate and phosphate.
Preferably, the injection rate Q of the oilwell water shutoff agent, its size are as follows：
Q=3.14r2hΦβ
In formula：Q- oilwell water shutoff agent injected slurry volume total amounts, m3；
R- water blockoff radiuses, m, value range 5-15m；
H- oil well effective pay thickinesses, m；
Φ-oil well oil reservoir porosity, dimensionless；
β-use level coefficient, dimensionless, value range are 0.3~0.5.
Compared with prior art, the invention has the advantages that and beneficial effect：
(1) raw material sources of oily sludge of the invention, thickener and dispersant are extensive, are easily obtained, of low cost；
(2) oilwell water shutoff agent preparation process of the invention is simple, and workable, manufacturing cost is low；
(3) oilwell water shutoff agent of the invention has the characteristics of stability is good, and plugging strength is high, and flushing resistance is good, can
To meet the water blockoff demand of different oil wells；
(4) present invention is effective solves problem of environmental pollution caused by oily sludge is arranged and filled outside, has obvious
Economic benefit and social benefit.
Embodiment
With reference to specific embodiment, the present invention is described further, but protection scope of the present invention is not limited in
This：
Embodiment 1
Test oil well M21Overview：63 DEG C, pressure 10.5MPa, formation water salinity 16230mg/L of oil temperature, permeability
1150mD, oil well oil reservoir layer position are 4 layers, viscosity of crude 962mPa.s, oil well core intersection 5.0m, oil saturation 28.2%,
Porosity 0.32, oil well daily fluid production rate 80m3/ d, aqueous 97.5%.Using the method for the present invention to being carried out to the oil well at water blockoff
Reason is used to improve oily well yield, and specific implementation step is as follows：
(1) pretreatment of oily sludge
Oily sludge is subjected to magnetic separation, removes metal impurities copper, zinc, chromium and mercury, obtains removing the oil-containing after metal impurities
Sludge；
(2) recycling of metal impurities
The progress of above-mentioned metal impurities is further selected, isolate metallics copper, zinc, chromium and the mercury of recoverable.
(3) preparation of oilwell water shutoff agent
Thickener, dispersant and water are added in above-mentioned oily sludge, is uniformly mixing to obtain oilwell water shutoff agent.
The oily sludge, thickener, the mass ratio of dispersant and water are 1: 0.1：0.05∶1.
The thickener is xanthic acid.
The dispersant is lignin salt.
The mixing speed is 200rpm.
(4) screening of oil well
The screening criteria of oil well is：The reservoir permeability of oil well is more than 500mD, and the oil reservoir layer position of oil well is more than 3 layers, oil well
Reservoir temperature be less than 90 DEG C.
Oil well M21Reservoir permeability be 1150mD, the oil reservoir layer position of oil well is 4 layers, and the reservoir temperature of oil well is 63
℃.Meet the screening criteria of the present invention.
(5) injection of oilwell water shutoff agent
Oilwell water shutoff agent is injected from the oil jacket annular space of oil well, the high permeability zone that oil well is blocked using oilwell water shutoff agent is reached
To the plugging function of oil well, so as to improve the yield of oil well crude oil.
The injection rate Q of the oilwell water shutoff agent, its size are as follows：
Q=3.14r2H Φ β=3.14 × 52× 5 × 0.32 × 0.3=37.68m3
In formula：Q- oilwell water shutoff agent injected slurry volume total amounts, m3；
R- water blockoff radiuses, m, value 5m；
H- oil well effective pay thickinesses, m；
Φ-oil well oil reservoir porosity, dimensionless；
β-use level coefficient, dimensionless, value 0.3.
The evaluation of field test results：After field test, oil well M21Daily oil production increases to from the 2.0t before experiment
12.0t, averagely increase day by day oily 10.0t；It is aqueous 97.5% to drop to 85.0% before experiment, it is aqueous to have dropped 12.5 percentages
Point；The term of validity reaches 32 months, and oil increment reaches 9600t, and input-output ratio reaches 1: 13.5, and field test results are good；Together
When solve arrange outside oily sludge and landfill caused by problem of environmental pollution, there is obvious economic benefit and social benefit.
Embodiment 2
Test oil well M15Overview：82 DEG C, pressure 11.2MPa, formation water salinity 5780mg/L of oil temperature, permeability
1600mD, oil well oil reservoir layer position are 5 layers, viscosity of crude 1256mPa.s, oil well core intersection 3.2m, oil saturation 29.0%,
Porosity 0.302, oil well daily fluid production rate 70m3/ d, aqueous 98.0%.Using the method for the present invention to carrying out water blockoff to the oil well
Processing is used to improve oily well yield, and specific implementation step is as follows：
(1) pretreatment of oily sludge
Oily sludge is subjected to magnetic separation, removes metal impurities copper, zinc, chromium and mercury, obtains removing the oil-containing after metal impurities
Sludge；
(2) recycling of metal impurities
The progress of above-mentioned metal impurities is further selected, isolate metallics copper, zinc, chromium and the mercury of recoverable.
(3) preparation of oilwell water shutoff agent
Thickener, dispersant and water are added in above-mentioned oily sludge, is uniformly mixing to obtain oilwell water shutoff agent.
The oily sludge, thickener, the mass ratio of dispersant and water are 1: 0.15: 0.07: 1.5.
The thickener is sodium alginate.
The dispersant is polycarboxylate.
The mixing speed is 250rpm.
(4) screening of oil well
The screening criteria of oil well is：The reservoir permeability of oil well is more than 500mD, and the oil reservoir layer position of oil well is more than 3 layers, oil well
Reservoir temperature be less than 90 DEG C.
Oil well M15Reservoir permeability be 1600mD, the oil reservoir layer position of oil well is 5 layers, and the reservoir temperature of oil well is 82
℃.Meet the screening criteria of the present invention.
(5) injection of oilwell water shutoff agent
Oilwell water shutoff agent is injected from the oil jacket annular space of oil well, the high permeability zone that oil well is blocked using oilwell water shutoff agent is reached
To the plugging function of oil well, so as to improve the yield of oil well crude oil.
The injection rate Q of the oilwell water shutoff agent, its size are as follows：
Q=3.14r2H Φ β=3.14 × 102× 3.2 × 0.302 × 0.4=121.4m3
In formula：Q- oilwell water shutoff agent injected slurry volume total amounts, m3；
R- water blockoff radiuses, m, value 10m；
H- oil well effective pay thickinesses, m；
Φ-oil well oil reservoir porosity, dimensionless；
β-use level coefficient, dimensionless, value 0.4.
The evaluation of field test results：After field test, oil well M15Daily oil production increases to from the 1.4t before experiment
10.85t, averagely increase day by day oily 9.45t；It is aqueous 98.0% to drop to 84.5% before experiment, it is aqueous to have dropped 13.5 percentages
Point；The term of validity reaches 35 months, and oil increment reaches 9923t, and input-output ratio reaches 1: 13.5, and field test results are good；Together
When solve arrange outside oily sludge and landfill caused by problem of environmental pollution, there is obvious economic benefit and social benefit.
Embodiment 3
Test oil well M25Overview：73 DEG C, pressure 12.1MPa, formation water salinity 3589mg/L of oil temperature, permeability
2500mD, oil well oil reservoir layer position are 4 layers, viscosity of crude 1280mPa.s, oil well core intersection 3.5m, oil saturation 31.2%,
Porosity 0.323, oil well daily fluid production rate 100m3/ d, aqueous 97.2%.Using the method for the present invention to carrying out water blockoff to the oil well
Processing is used to improve oily well yield, and specific implementation step is as follows：
(1) pretreatment of oily sludge
Oily sludge is subjected to magnetic separation, removes metal impurities copper, zinc, chromium and mercury, obtains removing the oil-containing after metal impurities
Sludge；
(2) recycling of metal impurities
The progress of above-mentioned metal impurities is further selected, isolate metallics copper, zinc, chromium and the mercury of recoverable.
(3) preparation of oilwell water shutoff agent
Thickener, dispersant and water are added in above-mentioned oily sludge, is uniformly mixing to obtain oilwell water shutoff agent.
The oily sludge, thickener, the mass ratio of dispersant and water are 1: 0.2: 0.1: 2.
The thickener is bentonite.
The dispersant is phosphate.
The mixing speed is 300rpm.
(4) screening of oil well
The screening criteria of oil well is：The reservoir permeability of oil well is more than 500mD, and the oil reservoir layer position of oil well is more than 3 layers, oil well
Reservoir temperature be less than 90 DEG C.
Oil well M25Reservoir permeability be 2500mD, the oil reservoir layer position of oil well is 4 layers, and the reservoir temperature of oil well is 73
℃.Meet the screening criteria of the present invention.
(5) injection of oilwell water shutoff agent
Oilwell water shutoff agent is injected from the oil jacket annular space of oil well, the high permeability zone that oil well is blocked using oilwell water shutoff agent is reached
To the plugging function of oil well, so as to improve the yield of oil well crude oil.
The injection rate Q of the oilwell water shutoff agent, its size are as follows：
Q=3.14r2H Φ β=3.14 × 152× 3.5 × 0.323 × 0.5=339m3
In formula：Q- oilwell water shutoff agent injected slurry volume total amounts, m3；
R- water blockoff radiuses, m, value 15m；
H- oil well effective pay thickinesses, m；
Φ-oil well oil reservoir porosity, dimensionless；
β-use level coefficient, dimensionless, value 0.5.
The evaluation of field test results：After field test, oil well M25Daily oil production increases to from the 2.8t before experiment
16.9t, averagely increase day by day oily 14.1t；It is aqueous 97.2% to drop to 83.1% before experiment, it is aqueous to have dropped 14.1 percentages
Point；The term of validity reaches 32 months, and oil increment reaches 13536t, and input-output ratio reaches 1: 15.2, and field test results are good；Together
When solve arrange outside oily sludge and landfill caused by problem of environmental pollution, there is obvious economic benefit and social benefit.
Basic principle, main feature and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (6)
- A kind of 1. method of oily sludge recycling, it is characterised in that the method specifically includes following steps：(1) pretreatment of oily sludgeOily sludge is subjected to magnetic separation, removes metal impurities copper, zinc, chromium and mercury, obtains removing the oily sludge after metal impurities；(2) recycling of metal impuritiesThe progress of above-mentioned metal impurities is further selected, isolate metallics copper, zinc, chromium and the mercury of recoverable；(3) preparation of oilwell water shutoff agentThickener, dispersant and water are added in above-mentioned oily sludge, is uniformly mixing to obtain oilwell water shutoff agent；(4) screening of oil wellThe screening criteria of oil well is：The reservoir permeability of oil well is more than 500mD, and the oil reservoir layer position of oil well is more than 3 layers, the oil of oil well Layer temperature is less than 90 DEG C；(5) injection of oilwell water shutoff agentOilwell water shutoff agent is injected from the oil jacket annular space of oil well, the high permeability zone that oil well is blocked using oilwell water shutoff agent reaches oil The plugging function of well, so as to improve the yield of oil well crude oil.
- 2. the method for oily sludge recycling according to claim 1 or 2, it is characterised in that described contains greasy dirt Mud, thickener, the mass ratio of dispersant and water are 1: 0.2-0.3: 0.05-0.1: 1-2.
- 3. the method for oily sludge recycling according to claim 1 or 2, it is characterised in that the mixing speed For 200-300rpm.
- 4. the method for oily sludge recycling according to claim 1 or 2, it is characterised in that the thickener is One kind in xanthic acid, sodium alginate and bentonite.
- 5. the method for oily sludge recycling according to claim 1 or 2, it is characterised in that the dispersant is One kind in lignin salt, polycarboxylate and phosphate.
- 6. the method for oily sludge recycling according to claim 1 or 2, it is characterised in that the oilwell water shutoff The injection rate Q of agent, its size are as follows：Q=3.14r2hΦβIn formula：Q- oilwell water shutoff agent injected slurry volume total amounts, m3；R- water blockoff radiuses, m, value range 5-15m；H- oil well effective pay thickinesses, m；Φ-oil well oil reservoir porosity, dimensionless；β-use level coefficient, dimensionless, value range are 0.3~0.5.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711172003.3A CN107902856A (en) | 2017-11-22 | 2017-11-22 | A kind of method of oily sludge recycling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711172003.3A CN107902856A (en) | 2017-11-22 | 2017-11-22 | A kind of method of oily sludge recycling |
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| CN107902856A true CN107902856A (en) | 2018-04-13 |
Family
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| CN201711172003.3A Withdrawn CN107902856A (en) | 2017-11-22 | 2017-11-22 | A kind of method of oily sludge recycling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114539998A (en) * | 2020-11-25 | 2022-05-27 | 中国石油天然气股份有限公司 | High-temperature profile control channeling sealing agent and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105295877A (en) * | 2015-10-10 | 2016-02-03 | 中国石油天然气股份有限公司 | Water plugging agent prepared from oil residue or oily sludge and preparation method thereof |
| CN106007296A (en) * | 2016-07-22 | 2016-10-12 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Oily sludge treatment method |
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2017
- 2017-11-22 CN CN201711172003.3A patent/CN107902856A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105295877A (en) * | 2015-10-10 | 2016-02-03 | 中国石油天然气股份有限公司 | Water plugging agent prepared from oil residue or oily sludge and preparation method thereof |
| CN106007296A (en) * | 2016-07-22 | 2016-10-12 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Oily sludge treatment method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114539998A (en) * | 2020-11-25 | 2022-05-27 | 中国石油天然气股份有限公司 | High-temperature profile control channeling sealing agent and preparation method and application thereof |
| CN114539998B (en) * | 2020-11-25 | 2023-05-26 | 中国石油天然气股份有限公司 | High-temperature profile control channeling sealing agent and preparation method and application thereof |
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Application publication date: 20180413 |