CN104155168A - Laboratory preparation method of trace water contained thickened oil and trace thickened oil dehydrating instrument - Google Patents
Laboratory preparation method of trace water contained thickened oil and trace thickened oil dehydrating instrument Download PDFInfo
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- CN104155168A CN104155168A CN201410273104.XA CN201410273104A CN104155168A CN 104155168 A CN104155168 A CN 104155168A CN 201410273104 A CN201410273104 A CN 201410273104A CN 104155168 A CN104155168 A CN 104155168A
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Abstract
The invention provides a laboratory preparation method of trace water contained thickened oil and a trace thickened oil dehydrating instrument. The method comprises the following steps: dehydrating to-be-dehydrated thickened oil; transferring the dehydrated thickened oil into a double-opening flask; putting the double-opening flask into an electric heating sleeve, and winding a part above the electric heating sleeve of the double-opening flask and a connecting elbow with an electric heating band with the temperature of 100 DEG C-120 DEG C; heating the thickened oil in the double-opening flask, setting the heating temperature of the electric heating sleeve initially to be 120 DEG C, then carrying out program temperature rising until the temperature of the thickened oil in the double-opening flask is 220 DEG C, recycling distillate, and separating to obtain a water layer and an organic liquid layer; pouring the organic liquid layer back to the thickened oil of the double-opening flask, and mixing uniformly; and determining the water content of the thickened oil, wherein the preparation of the trace water contained thickened oil is finished if the water content is less than 0.1%, otherwise, the step 2 to step 6 are repeated. The invention also provides the trace thickened oil dehydration instrument applied to the laboratory preparation method. The method provided by the invention can be used for efficiently preparing the trace water contained thickened oil with the water content less than 0.1% in a laboratory.
Description
Technical field
The laboratory preparation method and the viscous crude trace dehydrating apparatus that the present invention relates to the moisture viscous crude of a kind of trace, belong to Petroleum Production technology field.
Background technology
Viscous crude is in recovery process, conventionally be accompanied by a large amount of moisture, need to heavy oil dehydration is moisture to trace when viscous crude is carried out to assay, be that water cut is less than below 0.1%, because boiling explosion phenomenon often appears in viscous crude in dehydration, existing industry standard can only be dewatered thin oil, high solidifying oil to water cut lower than 0.5%, and can not in laboratory, realize and prepare water cut lower than 0.5% viscous crude, is more difficult to prepare water cut lower than 0.1% the moisture viscous crude of trace.
Viscous crude belongs to a kind of of crude oil, finger viscosity in the time of 50 ℃ is greater than the crude oil of 100mPas, by its viscosity difference, be divided three classes, be common heavy oil, special viscous crude and super viscous crude, the crude oil of 50℃Shi viscosity circle between 100mPas-10000mPas is common heavy oil, the crude oil of 50℃Shi viscosity circle between 10000mPas-50000mPas is special viscous crude, and in the time of 50 ℃, to be greater than the crude oil of 50000mPas be special viscous crude to viscosity.Thick water content in oil is present among crude oil with free water and emulsified water form, the on-the-spot dehydration of crude oil adopts heat sink falling, chemical settling, electric polarization is fallen heavy method and is gone to realize oil and water separation, these oily water separation techniques can be by below the dehydration of crude oil to 0.5% except viscous crude, common heavy oil dehydration is to below 2%, special viscous crude, below super heavy oil dehydration to 4%, the standard method of the indoor dehydration of crude oil is rower SY/T6520-2001 dehydration of crude oil test method-autoclave pressure method, the method determines that explanation can only be by below the dehydration of crude oil to 0.5%, for further by below heavy oil dehydration to 0.1%, laboratory experiment adopts distillation dehydration, only have distillation dehydration can prepare micro-moisture viscous crude, but often there is boiling explosion phenomenon in viscous crude in distillation dehydration process, therefore, in laboratory, prepare micro-moisture viscous crude very difficult.
Summary of the invention
In view of the defect that above-mentioned prior art exists, the object of the invention is to propose the laboratory preparation method of the moisture viscous crude of a kind of trace, can in laboratory, prepare water cut lower than 0.1% the moisture viscous crude of trace.
The principle of the invention is: adopt temperature programme and accompany hot method that the emulsified water in viscous crude is discharged with slow suitable speed, and discharging emulsified water and the free water discharging in time.
Object of the present invention is achieved by the following technical programs:
A laboratory preparation method for the moisture viscous crude of trace, the method comprises the steps:
Step 1, by heavy oil dehydration to be drained off to water cut below 10%;
Step 2, is transferred to the viscous crude after dehydration in twoport flask, and cumulative volume is no more than 2/3 of twoport flask volume;
Step 3, puts into electric heating cover by twoport flask, and the above part of twoport flask electric heating cover and bridge piece are wrapped with heat tape, and heat tape temperature is controlled between 100 ℃-120 ℃;
Step 4, viscous crude in twoport flask is heated, the heating-up temperature of initial setting electric heating cover is 120 ℃, when in heating-up temperature and twoport flask, the temperature gap of viscous crude is less than 10 ℃, the heating-up temperature of electric heating cover is raise 10 ℃, so repeatedly, until viscous crude temperature is heated to 220 ℃ in twoport flask, the fraction that recovery distills out, then separatory, obtains water layer and organic liquid layer;
Step 5, refunds the organic liquid layer of gained in the viscous crude of twoport flask, is heated to after viscous crude can flow mix;
Step 6, the water cut of the viscous crude of determination step five gained, prepares if water cut is less than 0.1% laboratory that completes micro-moisture viscous crude, make micro-moisture viscous crude, otherwise repeating step two is to step 6.
In above-mentioned laboratory preparation method, the use of ribbon heater, makes the moisture content distilling out in wet oil not be condensate in flask and elbow, and can discharge in time, has avoided condensing drip to fall the crude oil bumping causing after rise; Service routine heats up, and allows free water, emulsified water in crude oil slowly release, the crude oil bumping of having avoided a large amount of water evaporates of short time to cause; The setting of the heating-up temperature of heating tape and temperature programme condition, is Best Applying Condition of the present invention, can evaporate better moisture, prevents crude oil bumping.
In above-mentioned laboratory preparation method, the conventional method that the dewatering that step 1 adopts is this area, is preferably existing indoor dehydration of crude oil technical standard SY/T6520-2001 dehydration of crude oil test method---autoclave pressure method.
In above-mentioned laboratory preparation method, in step 1 and step 6, the assay method of water cut is the method for crude oil water containing quantitative determination GB/T8929-2006.
In the laboratory preparation method of the above-mentioned moisture viscous crude of trace, preferred, described viscous crude to be drained off comprises viscous crude, special viscous crude and/or super viscous crude.
The present invention also provides a kind of above-mentioned laboratory preparation method viscous crude trace dehydrating apparatus used, preferably, this viscous crude trace dehydrating apparatus comprises electric heating cover, twoport flask, thermometer, bridge piece and the condensing unit of heating tape controller, heat tape, temperature control thermopair, tape controller;
Described heating tape controller is electrically connected to described heat tape, described temperature control thermopair respectively, described thermometer inserts a mouth of described twoport flask, described bridge piece is connected with another mouthful of described condensing unit and described twoport flask respectively, described twoport flask is placed in the electric heating cover of described tape controller, described heat tape is wrapped in the above part of electric heating cover of described twoport flask and the outside surface of described bridge piece, and described temperature control thermopair is arranged between the above part of electric heating cover of described heat tape and described twoport flask.
Outstanding effect of the present invention is:
The present invention is first by below the heavy oil dehydration to 10% to be drained off of scene, then the viscous crude that completes preliminary hydro-extraction is transferred to and in twoport flask, carried out temperature programme, add thermal distillation, progressively deviate from free water and emulsified water under different temperatures, the moisture of simultaneously distillation being deviate from and cut companion hot type go out, condensation realizes the oil and water separation in viscous crude, the dehydration that solved viscous crude, super viscous crude, special viscous crude etc. is difficult, dewatering time long and the problem of the bumping of still-process, finally, can in laboratory, prepare water cut lower than 0.1% viscous crude.
Accompanying drawing explanation
Fig. 1 is the partial structurtes schematic diagram of the viscous crude trace dehydrating apparatus that provides of embodiment 3.
Embodiment
Below just accompanying drawing in conjunction with the embodiments, is described in further detail the specific embodiment of the present invention, so that technical solution of the present invention is easier to understand, grasp, but the present invention is not limited thereto.Experimental technique described in following embodiment, if no special instructions, is conventional method; Described reagent and material, if no special instructions, all can obtain from commercial channels.
Embodiment 1
The present embodiment provides the laboratory preparation method of the moisture viscous crude of a kind of trace, and the method comprises the steps:
Step 1, the special crude oil in Liaohe Oil Field of take is viscous crude to be drained off (special viscous crude), get the viscous crude to be drained off of 1L according to prior art standard SY/T6520-2001 dehydration of crude oil test method---autoclave pressure method is dewatered, it is 1.8% that the viscous crude after dehydration is recorded viscous crude moisture by GB/T8929-2006;
Step 2, is transferred to the viscous crude after dehydration in twoport flask, and cumulative volume is no more than 2/3 of twoport flask volume;
Step 3, puts into electric heating cover by twoport flask, and the above part of the electric heating cover of twoport flask and bridge piece are wrapped with to heat tape, and heat tape temperature is controlled between 100 ℃-120 ℃;
Step 4, viscous crude in twoport flask is heated, the heating-up temperature of initial setting electric heating cover is 120 ℃, when in the heating-up temperature of electric heating cover and twoport flask, the temperature gap of viscous crude is less than 10 ℃, the heating-up temperature of electric heating cover is raise 10 ℃, so repeatedly, until viscous crude temperature is heated to 220 ℃ in twoport flask, the cut that recovery distills out, separating funnel separatory, obtains water layer and organic liquid layer;
Step 5, the viscous crude in twoport flask is cooled to after room temperature, the organic liquid layer of gained is refunded in the viscous crude of twoport flask, is heated to after viscous crude can flow mix;
Step 6, moisture by the viscous crude in crude oil water containing quantitative determination GB/T8929-2006 method determination step five is 0.025%, makes micro-moisture viscous crude.
Embodiment 2
The present embodiment provides the laboratory preparation method of the moisture viscous crude of a kind of trace, and the method comprises the steps:
Step 1, take Block Du 84, Liaohe Oilfield crude oil as viscous crude to be drained off (super viscous crude), get the viscous crude to be drained off of 1L according to prior art standard SY/T6520-2001 dehydration of crude oil test method---autoclave pressure method is dewatered, it is 3.5% that viscous crude after dehydration is recorded viscous crude moisture by GB/T8929-2006;
Step 2, is transferred to the viscous crude after dehydration in twoport flask, and cumulative volume is no more than 2/3 of twoport flask volume;
Step 3, puts into electric heating cover by twoport flask, and the above part of the electric heating cover of twoport flask and bridge piece are wrapped with to heat tape, and heat tape temperature is controlled between 100 ℃-120 ℃;
Step 4, viscous crude in twoport flask is heated, the heating-up temperature of initial setting electric heating cover is 120 ℃, when in the heating-up temperature of electric heating cover and twoport flask, the temperature gap of viscous crude is less than 10 ℃, the heating-up temperature of electric heating cover is raise 10 ℃, so repeatedly, until viscous crude temperature is heated to 220 ℃ in twoport flask, the cut that recovery distills out, separating funnel separatory, obtains water layer and organic liquid layer;
Step 5, the viscous crude in twoport flask is cooled to after room temperature, the organic liquid layer of gained is refunded in the viscous crude of twoport flask, is heated to after viscous crude can flow mix;
Step 6, moisture by the viscous crude in crude oil water containing quantitative determination GB/T8929-2006 method determination step five is 0.03%, makes micro-moisture viscous crude.
Embodiment 3
The present embodiment provides a kind of viscous crude trace dehydrating apparatus, as shown in Figure 1, this viscous crude trace dehydrating apparatus comprises electric heating cover 2, twoport flask 3, thermometer 4, bridge piece 6 and the condensing unit (not shown in FIG.) of heating tape controller 1, heat tape 7, temperature control thermopair 5, tape controller;
Described heating tape controller 1 respectively with described heat tape 7, described temperature control thermopair 5 is electrically connected to, described thermometer 4 inserts a mouth of described twoport flask 3, described bridge piece 6 is connected with another mouthful of described condensing unit and described twoport flask 3 respectively, described twoport flask 3 is placed in the electric heating cover 2 of described tape controller, described heat tape 7 is wrapped in the above part of electric heating cover and described bridge piece 6 outside surfaces of described twoport flask 3, described temperature control thermopair 5 is arranged between the above part of electric heating cover of described heat tape 7 and described twoport flask 3.
The present embodiment is used above-mentioned viscous crude trace dehydrating apparatus to prepare micro-moisture viscous crude according to the laboratory preparation method of the moisture viscous crude of trace of the present invention, comprises the steps:
Step 1, the hollow crude oil in Liaohe Oil Field of take is viscous crude to be drained off (common heavy oil), get the viscous crude to be drained off of 1L according to prior art standard SY/T6520-2001 dehydration of crude oil test method---autoclave pressure method is dewatered, it is 0.5% that the viscous crude after dehydration is recorded viscous crude moisture by GB/T8929-2006;
Step 2, is transferred to the viscous crude after dehydration in twoport flask 3, and cumulative volume is no more than 2/3 of twoport flask 3 volumes;
Step 3, puts into twoport flask 3 electric heating cover 2 of tape controller, and the above part of twoport flask electric heating cover and bridge piece is wrapped with to heat tape 7, sets temperature control thermopair 5, and the temperature of heat tape 7 is controlled between 100 ℃-120 ℃;
Step 4, viscous crude in twoport flask 3 is heated, the heating-up temperature of initial setting electric heating cover 2 is 120 ℃, when in the heating-up temperature of electric heating cover 2 and twoport flask 3, the temperature gap of viscous crude is less than 10 ℃, the heating-up temperature of electric heating cover 2 is raise 10 ℃, so repeatedly, until viscous crude temperature is heated to 220 ℃ in twoport flask 3, the cut that recovery distills out, uses separating funnel separatory, obtains water layer and organic liquid layer;
Step 5, the viscous crude in twoport flask 3 is cooled to after room temperature, the organic liquid layer of gained is refunded in the viscous crude of twoport flask 3, is heated to after viscous crude can flow mix;
Step 6, is less than 0.025% by the viscous crude in crude oil water containing quantitative determination GB/T8929-2006 method determination step five is moisture, makes micro-moisture viscous crude.
Therefore, utilize the laboratory preparation method of the moisture viscous crude of trace provided by the invention can in laboratory, prepare water cut lower than 0.1% viscous crude, can realize more accurately the Physical Property Analysis of crude oil, the dehydrations such as viscous crude, super viscous crude, special viscous crude have been solved difficult, the problem of dewatering time length and still-process bumping.
Claims (3)
1. a laboratory preparation method for the moisture viscous crude of trace, the method comprises the steps:
Step 1, by heavy oil dehydration to be drained off to water cut below 10%;
Step 2, is transferred to the viscous crude after dehydration in twoport flask, and cumulative volume is no more than 2/3 of twoport flask volume;
Step 3, puts into electric heating cover by twoport flask, and the above part of twoport flask electric heating cover and bridge piece are wrapped with heat tape, and heat tape temperature is controlled between 100 ℃-120 ℃;
Step 4, viscous crude in twoport flask is heated, the heating-up temperature of initial setting electric heating cover is 120 ℃, when in heating-up temperature and twoport flask, the temperature gap of viscous crude is less than 10 ℃, the heating-up temperature of electric heating cover is raise 10 ℃, so repeatedly, until viscous crude temperature is heated to 220 ℃ in twoport flask, the fraction that recovery distills out, then separatory, obtains water layer and organic liquid layer;
Step 5, refunds the organic liquid layer of gained in the viscous crude of twoport flask, is heated to after viscous crude can flow mix;
Step 6, the water cut of the viscous crude of determination step five gained, prepares if water cut is less than 0.1% laboratory that completes micro-moisture viscous crude, make micro-moisture viscous crude, otherwise repeating step two is to step 6.
2. the laboratory preparation method of the moisture viscous crude of trace according to claim 1, is characterized in that: described viscous crude to be drained off comprises viscous crude, special viscous crude and/or super viscous crude.
3. the viscous crude trace dehydrating apparatus used of the laboratory preparation method described in claim 1 or 2, is characterized in that: this viscous crude trace dehydrating apparatus comprises electric heating cover, twoport flask, thermometer, bridge piece and the condensing unit of heating tape controller, heat tape, temperature control thermopair, tape controller;
Described heating tape controller is electrically connected to described heat tape, described temperature control thermopair respectively, described thermometer inserts a mouth of described twoport flask, described bridge piece is connected with another mouthful of described condensing unit and described twoport flask respectively, described twoport flask is placed in the electric heating cover of described tape controller, described heat tape is wrapped in the above part of electric heating cover of described twoport flask and the outside surface of described bridge piece, and described temperature control thermopair is arranged between the above part of electric heating cover of described heat tape and described twoport flask.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986061A (en) * | 2005-12-19 | 2007-06-27 | 中国石油化工股份有限公司 | Distillation dewatering set and its dewatering process using it |
| CN101993716A (en) * | 2009-08-11 | 2011-03-30 | 朱晓芳 | New process and equipment for dehydrating viscous oil |
| CN102127465A (en) * | 2011-01-28 | 2011-07-20 | 辽宁华孚石油高科技股份有限公司 | Low temperature dehydration process of thick oil |
| CN202606174U (en) * | 2012-05-28 | 2012-12-19 | 王晓航 | Crude oil dehydrating apparatus |
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2014
- 2014-06-18 CN CN201410273104.XA patent/CN104155168A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986061A (en) * | 2005-12-19 | 2007-06-27 | 中国石油化工股份有限公司 | Distillation dewatering set and its dewatering process using it |
| CN101993716A (en) * | 2009-08-11 | 2011-03-30 | 朱晓芳 | New process and equipment for dehydrating viscous oil |
| CN102127465A (en) * | 2011-01-28 | 2011-07-20 | 辽宁华孚石油高科技股份有限公司 | Low temperature dehydration process of thick oil |
| CN202606174U (en) * | 2012-05-28 | 2012-12-19 | 王晓航 | Crude oil dehydrating apparatus |
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Application publication date: 20141119 |