CN104724801A - Fast demulsification flocculant for well cleanout truck of oil field - Google Patents
Fast demulsification flocculant for well cleanout truck of oil field Download PDFInfo
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- CN104724801A CN104724801A CN201510089761.3A CN201510089761A CN104724801A CN 104724801 A CN104724801 A CN 104724801A CN 201510089761 A CN201510089761 A CN 201510089761A CN 104724801 A CN104724801 A CN 104724801A
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- flocculation agent
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Abstract
The invention discloses a fast demulsification flocculant for a well cleanout truck of an oil field. The flocculant consists of a dendritic nonionic demulsification agent, a polymeric flocculant and a macromolecular ion settling agent in a weight ratio of 1: (1-5): (0.1-1). During use, the dosage is 50ppm, the dehydrating temperature is 30 DEG C, the dehydrating rate after 1 hour is greater than 99%, the discharge sewage is clear in color, the suspended solids are less than or equal to 3mg/L, and the median particle diameter is less than or equal to 1.5 microns. The oil content is less than or equal to 5mg/L, and the flocculant has the advantages of being few in medicament dosage, fast in settling speed and low in using temperature. Compared with a field compound flocculant, the performances of a flushing fluid settled for 1 hour cannot satisfy the requirement of field reinjection water.
Description
Technical field
The present invention relates to oil field flocculation agent technical field, particularly relate to the automobile-used fast emulsion breaking flocculation agent of a kind of oil field flushing.
Background technology
Colloidal particle containing a large amount of mechanical impuritys, suspension in the flushing fluid that oil field produces in washing well process and water external emulsion.The flushing fluid in the past produced is all the unified process in place transported to joint station with tank car or specify, and wastes a large amount of transport power and manpower.According to the production status in oil field, direct at the scene flushing fluid can be processed, after up to standard, utilize well-washing truck to be recycled in well.Therefore, it is fast that the medicament supporting with well-washing truck must have de-emulsification speed, and dehydrating effect is good, and settling velocity is fast, reduces on-site construction time.Water quality after process meets the index of oil field reinjection water, i.e. suspended substance≤3mg/L, median particle size≤2 μm; The requirement of oil-containing≤8mg/L etc.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of for the automobile-used fast emulsion breaking flocculation agent of oil field flushing, realizes the fast emulsion breaking to flushing fluid, the object of rapid subsidence, reaches demulsification good, deviate from clarification of water, meet the requirement of oil field reinjection water.
The present invention adopts following technical scheme:
The automobile-used fast emulsion breaking flocculation agent of oil field flushing of the present invention is made up of dendroid nonionic demulsifier, aggretion type flocculation agent and ionic polymer compound sinking agent.Dendritic nonionic demulsifier has good demulsification, and de-emulsification speed is fast, and dehydrating effect is good, and water-oil interface are clear; Aggretion type flocculation agent absorption oil droplet, impels oil droplet coalescence; Ionic polymer compound sinking agent adsorbs multiple colloidal particle and sedimentation occurs, and in the process of sedimentation, the oil droplet of adsorpting aggregation together sedimentation again, reaches the object of water purification.
The weight ratio of dendroid nonionic demulsifier, aggretion type flocculation agent and ionic polymer compound sinking agent is 1:1-5:0.1-1.The weight ratio of preferred dendroid nonionic demulsifier, aggretion type flocculation agent and ionic polymer compound sinking agent is 1:3:0.5.
Described dendroid nonionic demulsifier is be initiator by polyethylene polyamine, glycerol etc., the dendritic nonionogenic tenside of the different block numbers formed from oxyethane, Polymerization of Propylene Oxide.Have dehydration rate high, go out the advantage that water speed is fast, water-oil interface state neat, dehydration oil length is low, dehydration temperaturre is low, dosage is few.
Described aggretion type flocculation agent is polymerization organic titanium, polymerization organic zirconium etc.By certain technique, make inorganic titanium chloride, zirconium chloride generation polymerization to a certain degree, make flocculation agent itself with the positive charge of high electricity, have adaptation water quality wide, coagulation effect varies with temperature little, forms the fireballing advantage of flco.
Described ionic polymer compound sinking agent is generally the complex ionic polyacrylamide of high molecular, molecular weight between 1,000 ten thousand ~ 1,200 ten thousand, cationic degree 10%-15%.Compound ion polyacrylamide molecular chain is very long, containing multiple active group on each polyacrylamide molecular chain, builds bridge between multiple suspended particles, forms multipoint adsorption, compresses fluffy flco, Accelerated subsidence.
Dendroid nonionic demulsifier is preferably polyethylene polyamine ethylene oxide propylene oxide polyethers.Preparation method is as follows: select polyethylene polyamine and glycerol to be initiator, KOH is catalyzer, initiator and catalyzer are added in the autoclave of 0.5L, with the abundant scavenging pipeline of nitrogen and reactor, stir and be warmed up to 90 DEG C, vacuumize and continue to heat up, stop vacuumizing to (about 0.5 hour) when 120 DEG C, drip propylene oxide, temperature 135 ± 5 DEG C, react under pressure 0.4MPa, until initiator reaches 1:(180 ~ 240 with the ratio of oxyethane), stop vacuumizing rear dropping oxyethane, temperature 125 ± 5 DEG C, react under pressure 0.3MPa, after adding propylene oxide, reaction 0.5h is continued at temperature 125 ± 5 DEG C, cooling, discharging.Repeat above-mentioned reaction, many blocks dendroid nonionic polyoxyalkylene.
Aggretion type flocculation agent is preferably organic titanium zirconium composite, and preparation method is as follows: drop in there-necked flask by titanium chloride, zirconium oxychloride, ethylene glycol, ammonium lacate according to 3:2:10:85 (mass ratio), stirring and dissolving, is slowly warming up to 70 DEG C, reacts 3 hours.
Ionic polymer compound sinking agent is preferably acrylamide-dimethyl diallyl ammonium chloride polymkeric substance.Synthetic method is as follows: adopt emulsion polymerization synthesis, take sodium laurylsulfonate as emulsifying agent, ammonium persulphate is initiator, and acrylamide and dimethyl diallyl ammonium chloride are that main body agent copolymerization forms.
In use, chemical feeding quantity is 50ppm to described flocculation agent, and dehydration temperaturre is 30 DEG C, settling time 1h.
Positively effect of the present invention is as follows:
Fast emulsion breaking flocculation agent of the present invention presses the proportions of 1:3:0.5 by dendroid nonionic demulsifier, aggretion type flocculation agent and ionic polymer compound sinking agent, chemical feeding quantity 50ppm, dehydration temperaturre 30 DEG C, after 1h, dehydration rate is greater than 99%, deviate from sewage color clear, suspended substance≤3mg/L, median particle size≤1.5 μm; Oil-containing≤5mg/L, has dosing few, and settling velocity is fast, the advantage that use temperature is low.And on-the-spot composite flocculation agent in contrast, the performance after flushing fluid sedimentation 1h all can not reach the requirement of on-the-spot reinjected water.
Embodiment
The following examples describe in further detail of the present invention.
Embodiment 1
The automobile-used fast emulsion breaking flocculation agent of oil field flushing of the present invention is made up of dendroid nonionic demulsifier, aggretion type flocculation agent and ionic polymer compound sinking agent.The weight ratio of dendroid nonionic demulsifier, aggretion type flocculation agent and ionic polymer compound sinking agent is 1:1:0.1.
Dendroid nonionic demulsifier is polyethylene polyamine ethylene oxide propylene oxide polyethers.Preparation method is as follows: select polyethylene polyamine and glycerol to be initiator, KOH is catalyzer, initiator and catalyzer are added in the autoclave of 0.5L, with the abundant scavenging pipeline of nitrogen and reactor, stir and be warmed up to 90 DEG C, vacuumize and continue to heat up, stop vacuumizing to (about 0.5 hour) when 120 DEG C, drip propylene oxide, temperature 135 ± 5 DEG C, react under pressure 0.4MPa, until initiator reaches 1:(180 ~ 240 with the ratio of oxyethane), stop vacuumizing rear dropping oxyethane, temperature 125 ± 5 DEG C, react under pressure 0.3MPa, after adding propylene oxide, reaction 0.5h is continued at temperature 125 ± 5 DEG C, cooling, discharging.Repeat above-mentioned reaction, many blocks dendroid nonionic polyoxyalkylene.
Aggretion type flocculation agent is organic titanium zirconium composite, and preparation method is as follows: drop in there-necked flask by titanium chloride, zirconium oxychloride, ethylene glycol, ammonium lacate according to 3:2:10:85 (mass ratio), stirring and dissolving, is slowly warming up to 70 DEG C, reacts 3 hours.
Ionic polymer compound sinking agent is acrylamide-dimethyl diallyl ammonium chloride polymkeric substance.Synthetic method is as follows: adopt emulsion polymerization synthesis, take sodium laurylsulfonate as emulsifying agent, ammonium persulphate is initiator, and acrylamide and dimethyl diallyl ammonium chloride are that main body agent copolymerization forms.
Embodiment 2
The automobile-used fast emulsion breaking flocculation agent of oil field flushing of the present invention is made up of dendroid nonionic demulsifier, aggretion type flocculation agent and ionic polymer compound sinking agent.The weight ratio of dendroid nonionic demulsifier, aggretion type flocculation agent and ionic polymer compound sinking agent is 1:5:1.
Dendroid nonionic demulsifier is polyethylene polyamine ethylene oxide propylene oxide polyethers.Preparation method is as follows: select polyethylene polyamine and glycerol to be initiator, KOH is catalyzer, initiator and catalyzer are added in the autoclave of 0.5L, with the abundant scavenging pipeline of nitrogen and reactor, stir and be warmed up to 90 DEG C, vacuumize and continue to heat up, stop vacuumizing to (about 0.5 hour) when 120 DEG C, drip propylene oxide, temperature 135 ± 5 DEG C, react under pressure 0.4MPa, until initiator reaches 1:(180 ~ 240 with the ratio of oxyethane), stop vacuumizing rear dropping oxyethane, temperature 125 ± 5 DEG C, react under pressure 0.3MPa, after adding propylene oxide, reaction 0.5h is continued at temperature 125 ± 5 DEG C, cooling, discharging.Repeat above-mentioned reaction, many blocks dendroid nonionic polyoxyalkylene.
Aggretion type flocculation agent is organic titanium zirconium composite, and preparation method is as follows: drop in there-necked flask by titanium chloride, zirconium oxychloride, ethylene glycol, ammonium lacate according to 3:2:10:85 (mass ratio), stirring and dissolving, is slowly warming up to 70 DEG C, reacts 3 hours.
Ionic polymer compound sinking agent is acrylamide-dimethyl diallyl ammonium chloride polymkeric substance.Synthetic method is as follows: adopt emulsion polymerization synthesis, take sodium laurylsulfonate as emulsifying agent, ammonium persulphate is initiator, and acrylamide and dimethyl diallyl ammonium chloride are that main body agent copolymerization forms.
Embodiment 3
The automobile-used fast emulsion breaking flocculation agent of oil field flushing of the present invention is made up of dendroid nonionic demulsifier, aggretion type flocculation agent and ionic polymer compound sinking agent.The weight ratio of dendroid nonionic demulsifier, aggretion type flocculation agent and ionic polymer compound sinking agent is 1:3:0.5.
Dendroid nonionic demulsifier is polyethylene polyamine ethylene oxide propylene oxide polyethers.Preparation method is as follows: select polyethylene polyamine and glycerol to be initiator, KOH is catalyzer, initiator and catalyzer are added in the autoclave of 0.5L, with the abundant scavenging pipeline of nitrogen and reactor, stir and be warmed up to 90 DEG C, vacuumize and continue to heat up, stop vacuumizing to (about 0.5 hour) when 120 DEG C, drip propylene oxide, temperature 135 ± 5 DEG C, react under pressure 0.4MPa, until initiator reaches 1:(180 ~ 240 with the ratio of oxyethane), stop vacuumizing rear dropping oxyethane, temperature 125 ± 5 DEG C, react under pressure 0.3MPa, after adding propylene oxide, reaction 0.5h is continued at temperature 125 ± 5 DEG C, cooling, discharging.Repeat above-mentioned reaction, many blocks dendroid nonionic polyoxyalkylene.
Aggretion type flocculation agent is organic titanium zirconium composite, and preparation method is as follows: drop in there-necked flask by titanium chloride, zirconium oxychloride, ethylene glycol, ammonium lacate according to 3:2:10:85 (mass ratio), stirring and dissolving, is slowly warming up to 70 DEG C, reacts 3 hours.
Ionic polymer compound sinking agent is acrylamide-dimethyl diallyl ammonium chloride polymkeric substance.Synthetic method is as follows: adopt emulsion polymerization synthesis, take sodium laurylsulfonate as emulsifying agent, ammonium persulphate is initiator, and acrylamide and dimethyl diallyl ammonium chloride are that main body agent copolymerization forms.
(1) medicament dosage is on the impact of demulsification
Get Daqing oil field to recover the oil eight factory's flushing fluid water samples, change drug concentration be respectively 30,50,70,100ppm, dehydration temperaturre 30 DEG C, measures its dehydrating amount every certain hour, calculates the dehydration rate of emulsion splitter, observes the color of water.In table 1.
Table 1 medicament dosage is on the impact of demulsification
From table 1, chemical feeding quantity 50ppm, dehydration temperaturre 30 DEG C, dewatering speed significantly improves, and after after 30min, dehydration rate is greater than 95%, 1h, dehydration rate is greater than 99%, and it is clear to deviate from sewage color.
(2) dehydration temperaturre is on the impact of demulsification
Change dehydration temperaturre and be respectively 20,30,40,50 DEG C, drug concentration 50ppm, measure its dehydrating amount every certain hour, calculate dehydration rate, observe the color of water, in table 2.
Table 2 dehydration temperaturre is on the impact of demulsification
From table 2, chemical feeding quantity 50ppm, raises with dehydration temperaturre, and dehydration rate increases, and dewatering speed is accelerated.When dehydration temperaturre is 30 DEG C, dewatering speed significantly improves, and dehydration rate is greater than 99%, and it is clear to deviate from water color.
(3) performance index after flushing fluid process
Select on-the-spot composite flocculation agent and fast emulsion breaking flocculation agent to carry out contrast experiment, drug concentration 50ppm, dehydration temperaturre 30 DEG C, settling time 1h, the performance index of flushing fluid after process are evaluated, in table 3.
Table 3 flushing fluid handling property index
From table 3, fast emulsion breaking flocculation agent chemical feeding quantity 50ppm, settling time 1h, suspended substance≤3mg/L, median particle size≤1.5 μm; Oil-containing≤5mg/L, has dosing few, the advantage that settling velocity is fast.And on-the-spot composite flocculation agent in contrast, the performance after flushing fluid sedimentation 1h all can not reach the requirement of on-the-spot reinjected water.
Although illustrate and describe embodiments of the invention, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments without departing from the principles and spirit of the present invention, scope of the present invention is by claims and equivalents thereof.
Claims (7)
1. the automobile-used fast emulsion breaking flocculation agent of oil field flushing, is characterized in that: described flocculation agent is made up of dendroid nonionic demulsifier, aggretion type flocculation agent and ionic polymer compound sinking agent.
2. the automobile-used fast emulsion breaking flocculation agent of oil field flushing as claimed in claim 1, is characterized in that: the weight ratio of dendroid nonionic demulsifier, aggretion type flocculation agent and ionic polymer compound sinking agent is 1:1-5:0.1-1.
3. the automobile-used fast emulsion breaking flocculation agent of oil field flushing as claimed in claim 1, is characterized in that: the weight ratio of dendroid nonionic demulsifier, aggretion type flocculation agent and ionic polymer compound sinking agent is 1:3:0.5.
4. the automobile-used fast emulsion breaking flocculation agent of the oil field flushing as described in any one of claim 1-3, it is characterized in that: described dendroid nonionic demulsifier for being initiator by polyethylene polyamine, glycerol, the dendritic nonionogenic tenside of the different block numbers formed from oxyethane, Polymerization of Propylene Oxide.
5. the automobile-used fast emulsion breaking flocculation agent of the oil field flushing as described in any one of claim 1-3, it is characterized in that: described aggretion type flocculation agent passes through chemical reaction, make inorganic titanium chloride, zirconium chloride is polymerized, the polymerization organic titanium of synthesis or polymerization organic zirconium.
6. the automobile-used fast emulsion breaking flocculation agent of the oil field flushing as described in any one of claim 1-3, it is characterized in that: described ionic polymer compound sinking agent is the complex ionic polyacrylamide of high molecular, molecular weight between 1,000 ten thousand ~ 1,200 ten thousand, cationic degree 10%-15%.
7. the automobile-used fast emulsion breaking flocculation agent of the oil field flushing as described in any one of claim 1-3, is characterized in that: in use, chemical feeding quantity is 50ppm to described flocculation agent, and dehydration temperaturre is 30 DEG C, settling time 1h.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105399183A (en) * | 2015-12-21 | 2016-03-16 | 天津欧盼科技开发有限公司 | Oil-containing wastewater treatment agent |
| CN105601866A (en) * | 2016-01-07 | 2016-05-25 | 中国海洋石油总公司 | Polyurethane type crude oil demulsifier and preparation method thereof |
| CN105771327A (en) * | 2016-05-26 | 2016-07-20 | 句容宁武高新技术发展有限公司 | Compound demulsifying agent capable of improving demulsifying effect of polyether demulsifying agents |
| CN106044945A (en) * | 2016-07-14 | 2016-10-26 | 慎叶 | Novel composite demulsifier for environmental protection and preparation method of novel composite demulsifier |
| CN106190228A (en) * | 2016-07-14 | 2016-12-07 | 慎叶 | A kind of novel crude oil high-efficient demulsifier and preparation method thereof |
| CN107794078A (en) * | 2016-08-29 | 2018-03-13 | 兰州金盛隆石油化工有限公司 | A kind of oil plant demulsifier and preparation method thereof |
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2015
- 2015-02-27 CN CN201510089761.3A patent/CN104724801A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105399183A (en) * | 2015-12-21 | 2016-03-16 | 天津欧盼科技开发有限公司 | Oil-containing wastewater treatment agent |
| CN105601866A (en) * | 2016-01-07 | 2016-05-25 | 中国海洋石油总公司 | Polyurethane type crude oil demulsifier and preparation method thereof |
| CN105771327A (en) * | 2016-05-26 | 2016-07-20 | 句容宁武高新技术发展有限公司 | Compound demulsifying agent capable of improving demulsifying effect of polyether demulsifying agents |
| CN106044945A (en) * | 2016-07-14 | 2016-10-26 | 慎叶 | Novel composite demulsifier for environmental protection and preparation method of novel composite demulsifier |
| CN106190228A (en) * | 2016-07-14 | 2016-12-07 | 慎叶 | A kind of novel crude oil high-efficient demulsifier and preparation method thereof |
| CN107794078A (en) * | 2016-08-29 | 2018-03-13 | 兰州金盛隆石油化工有限公司 | A kind of oil plant demulsifier and preparation method thereof |
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Application publication date: 20150624 |