CN103048352A - Technology for testing water content of thickened oil - Google Patents
Technology for testing water content of thickened oil Download PDFInfo
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- CN103048352A CN103048352A CN 201110325879 CN201110325879A CN103048352A CN 103048352 A CN103048352 A CN 103048352A CN 201110325879 CN201110325879 CN 201110325879 CN 201110325879 A CN201110325879 A CN 201110325879A CN 103048352 A CN103048352 A CN 103048352A
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Abstract
The invention discloses a technology for testing water content of thickened oil. The technology comprises the steps of: (a) extracting a thickened oil sample for later use; (b) directly pouring certain weight of thickened oil sample into an experimental container; (c) adding a solvent which is not dissolved into water to the thickened oil sample, and connecting a distilling apparatus to carry out heat distillation until an anhydrous state is achieved; (d) reading the volume of the distilled water, and calculating the percent content of water in a crude oil sample. By adopting the technology, the water content of the thickened oil can be rapidly tested; and the technology is high in test accuracy and low in test cost, and data support is provided for mining of crude oil.
Description
Technical field
The present invention relates to a kind of viscous crude test of moisture content technique.
Background technology
Along with Gong the utilization of conventional oil reduces day by day, heavy oil is becoming the next century mankind's important energy source.Through the effort in more than 20 years, global heavy oil industry had than conventional oil speed of development faster, and the annual production of viscous crude, tar sand rises to nearly hundred million tons by 2,000 ten thousand tons, and its importance receives people's concern day by day.The difficulty of heavy crude reservoir exploitation is mainly manifested in two aspects: the viscosity of crude oil is high on the one hand, and the filtrational resistance of crude oil in oil reservoir is large, so that crude oil can not flow into the shaft bottom from oil reservoir; Even on the other hand under reservoir condition, crude oil can flow into the shaft bottom, but in the process of vertical lifting, because the impact of crude oil factor such as degassed and radiating and cooling in pit shaft, so that the viscosity of crude oil further increases, have a strong impact on the normal operation of the mobile and oil well production equipment of resident fluid in pit shaft.
Powerful in petroleum demand, price of oil going up sky-high, under the background of conventional crude production declining, petroleum industry is just turning to thickened oil recovery at the emphasis in many places, the whole world.The chances are 9～13,000,000,000,000 barrels (1.4～2.1 tcms) for the Global Oil resource,
Conventional crude only account for wherein 30%, all the other all are viscous crude, super viscous crude and pitch.Viscous crude and tar sand resource are important energy source in the world, and about 4,000 hundred million tons of present global workable reserve is 2.7 times of 1,500 hundred million tons of conventional crude workable reserve.
According to the interrelated data statistics, explored heavy oil resource mainly concentrates on the states such as Venezuela, USSR (Union of Soviet Socialist Republics), the U.S. and Canada in the world at present.The Orinoco heavy oil belt of Venezuela northeast is examined geologic reserve and is reached more than 3,000 hundred million tons.Half of U.S.'s heavy oil resource is distributed in Gary Fu Niya, nearly 40,000,000,000 tons of geologic reserve, remaining half be distributed in the continent, middle part.Canadian heavy oil resource mainly is distributed in four major sedimentary mineral reserve such as Athabasca, cold air lake, dimension Pascal and this river of Alberta, nearly 1,500 hundred million tons of geologic reserve.The heavy oil resource of USSR (Union of Soviet Socialist Republics) mainly is distributed in more than 200 hundred million tons of the Ba Sainuofuyue in West Siberia basin, comprises that also there is extremely abundant viscous crude resource in other country of China.Total geologic reserve of these heavy oil resources adds up more than 6,000 hundred million tons, and in the world conventional oil verify 3,600 hundred million tons of geologic reserve, its workable reserve only is 90,000,000,000 tons.
The viscous crude stock number that China has found is also very abundant, and oneself has more than 20 the viscous crude field of discovery, is distributed in the areas such as the Liaohe River, triumph, Xinjiang, huge port, Jilin, estimates that Chinese heavy petroleum asphalt stock number can reach more than 300 * 108t.China's viscous crude (highly viscous oil, viscosity is more than 0.1Pas) resource distribution is very wide, and geologic reserve reaches 164 * 108t, and wherein the land viscous crude accounts for more than 20% of oil total resources.The outstanding characteristics of viscous crude are that bituminous matter, gum level are higher.Colloid, the heavy oil production that asphalt content is higher account for 7% of crude oil total production.
Connect the area in Daqing oil field, Henan, Inner Mongol two in recent years and found important heavy crude reservoir; Also find the viscous crude resource in areas such as Jianghan Oil-field, little, the Northwest Sichuan of peace.Heavy crude reservoir geologic reserve explored and control has surpassed national common thin oil reserves, estimates also to have from now on new growth.
In the proven reserves of CNPC, common heavy oil accounts for 74.7%, and special viscous crude accounts for 14.4%, and super viscous crude accounts for 10.9%.
Countries in the world mainly rely on traditional thermal methods to the exploitation of highly viscous crude at present, i.e. steam stimulation and steam flood.The supporting technology that China's great majority adopt steam stimulation and pit shaft to mix thin oil is recovered the oil.This method not only consumes a large amount of fuel, but also consumes a large amount of thin oils, thereby has increased widely cost for oil production.Have bibliographical information can use the Emulsifying heavy crude producing, this method is that water phase surfactant mixture is annotated the down-hole, makes full-bodied viscous crude change low viscous water external emulsion extraction into.Reducing viscosity by emulsifying is because its viscosity break ratio is high, low, the easy operating of cost, and at home and abroad all there is use in the oil field at present.But the emulsifying pour depressor that uses at present only possesses single heatproof or anti-rock salt performance, namely heatproof again the emulsifying pour depressor of anti-rock salt research and development also seldom.
In the oil extraction process, at first to test the parameters of the viscous crude of need exploitations, particularly the water cut of viscous crude by the viscous crude parameter that tests out, is formulated the recovery scheme that is fit to, thereby improves production efficiency, reduces cost of winning.
Summary of the invention
The object of the invention is to overcome the shortcoming and defect of above-mentioned prior art, a kind of viscous crude test of moisture content technique is provided, and this method of testing can test out the water cut of viscous crude fast, and measuring accuracy is high, testing cost is low, for crude oil production provides Data support.
Purpose of the present invention is achieved through the following technical solutions: a kind of viscous crude test of moisture content technique may further comprise the steps:
(a) extraction viscous crude sample is for subsequent use;
(b) directly pour into the viscous crude sample of constant weight in the experiment container;
(c) in the viscous crude sample, add water-immiscible solvent, and connect distilling apparatus and heat and be distilled to anhydrous state;
(d) read the volume of the water that distills out, and calculate the percentage composition of water in the crude oil sample.
In the described step (b), the weight of viscous crude sample is 1 gram.
In the described step (b), experiment container is distilling flask.
In the described step (c), solvent is dimethylbenzene.
In the described step (c), the volume of solvent is 400ml.
In sum, the invention has the beneficial effects as follows: can test out fast the water cut of viscous crude, and measuring accuracy is high, testing cost is low, for crude oil production provides Data support.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited only to this.
Embodiment:
A kind of viscous crude test of moisture content technique that present embodiment relates to may further comprise the steps:
(a) extraction viscous crude sample is for subsequent use;
(b) directly pour into the viscous crude sample of constant weight in the experiment container;
(c) in the viscous crude sample, add water-immiscible solvent, and connect distilling apparatus and heat and be distilled to anhydrous state;
(d) read the volume of the water that distills out, and calculate the percentage composition of water in the crude oil sample.
In the described step (b), the weight of viscous crude sample is 1 gram.
In the described step (b), experiment container is distilling flask.
In the described step (c), solvent is dimethylbenzene.
In the described step (c), the volume of solvent is 400ml.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction, and every foundation technical spirit of the present invention, any simple modification, equivalent variations to above embodiment does all fall within protection scope of the present invention.
Claims (5)
1. a viscous crude test of moisture content technique is characterized in that, may further comprise the steps:
(a) extraction viscous crude sample is for subsequent use;
(b) directly pour into the viscous crude sample of constant weight in the experiment container;
(c) in the viscous crude sample, add water-immiscible solvent, and connect distilling apparatus and heat and be distilled to anhydrous state;
(d) read the volume of the water that distills out, and calculate the percentage composition of water in the crude oil sample.
2. a kind of viscous crude test of moisture content technique according to claim 1 is characterized in that, in the described step (b), the weight of viscous crude sample is 1 gram.
3. a kind of viscous crude test of moisture content technique according to claim 1 is characterized in that, in the described step (b), experiment container is distilling flask.
4. a kind of viscous crude test of moisture content technique according to claim 1 is characterized in that, in the described step (c), solvent is dimethylbenzene.
5. a kind of viscous crude test of moisture content technique according to claim 1 is characterized in that, in the described step (c), the volume of solvent is 400ml.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110325879 CN103048352A (en) | 2011-10-13 | 2011-10-13 | Technology for testing water content of thickened oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110325879 CN103048352A (en) | 2011-10-13 | 2011-10-13 | Technology for testing water content of thickened oil |
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| Publication Number | Publication Date |
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| CN103048352A true CN103048352A (en) | 2013-04-17 |
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| CN 201110325879 Pending CN103048352A (en) | 2011-10-13 | 2011-10-13 | Technology for testing water content of thickened oil |
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Application publication date: 20130417 |