CN103048436A - Crude oil water content testing method applied to crude oil extraction process - Google Patents
Crude oil water content testing method applied to crude oil extraction process Download PDFInfo
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- CN103048436A CN103048436A CN 201110326096 CN201110326096A CN103048436A CN 103048436 A CN103048436 A CN 103048436A CN 201110326096 CN201110326096 CN 201110326096 CN 201110326096 A CN201110326096 A CN 201110326096A CN 103048436 A CN103048436 A CN 103048436A
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Abstract
The invention discloses a crude oil water content testing method applied to a crude oil extraction process. The crude oil water content testing method comprises the following steps: (a) extracting a crude oil sample for future use; (b) adding a solvent which is not mixed with water into the crude oil sample, and heating and distilling; (c) continuously separating the condensed solvent and water in a receiver and depositing the water into a scaled part in the receiver; and (d) reading the volume of the water in the receiver and calculating the percentage content of the water in the crude oil sample. According to the crude oil water content testing method disclosed by the invention, the water content of crude oil can be rapidly tested, the testing precision is high and the testing cost is low, and the crude oil water content testing method provides data support to the crude oil extraction.
Description
Technical field
The present invention relates to a kind of crude oil water containing weight testing method that is applied in the oil extraction process.
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 crude oil of need exploitations, by the crude oil parameter that tests out, specify the recovery scheme that is fit to, thereby improve production efficiency, reduce 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 crude oil water containing weight testing method that is applied in the oil extraction process is provided, this method of testing can test out the water cut of crude oil 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 crude oil water containing weight testing method that is applied in the oil extraction process may further comprise the steps:
(a) the extraction crude oil sample is for subsequent use;
(b) in crude oil sample, add and the immiscible solvent of water, and add thermal distillation;
(c) solvent that gets off of condensation and water in receiver continuous separate from, depositing in water drops to band scale part in the receiver;
(d) read the volume of water in the receiver, and calculate the percentage composition of water in the crude oil sample.
In the described step (b), under refluxad add thermal distillation.
In the described step (c), solvent turns back in the distilling flask.
In sum, the invention has the beneficial effects as follows: can test out fast the water cut of crude oil, 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 crude oil water containing weight testing method that is applied in the oil extraction process that present embodiment relates to may further comprise the steps:
(a) the extraction crude oil sample is for subsequent use;
(a) the extraction crude oil sample is for subsequent use;
(b) in crude oil sample, add and the immiscible solvent of water, and add thermal distillation;
(c) solvent that gets off of condensation and water in receiver continuous separate from, depositing in water drops to band scale part in the receiver;
(d) read the volume of water in the receiver, and calculate the percentage composition of water in the crude oil sample.
In the described step (b), under refluxad add thermal distillation.
In the described step (c), solvent turns back in the distilling flask.
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 (3)
1. a crude oil water containing weight testing method that is applied in the oil extraction process is characterized in that, may further comprise the steps:
(a) the extraction crude oil sample is for subsequent use;
(b) in crude oil sample, add and the immiscible solvent of water, and add thermal distillation;
(c) solvent that gets off of condensation and water in receiver continuous separate from, depositing in water drops to band scale part in the receiver;
(d) read the volume of water in the receiver, and calculate the percentage composition of water in the crude oil sample.
2. a kind of crude oil water containing weight testing method that is applied in the oil extraction process according to claim 1 is characterized in that, in the described step (b), under refluxad adds thermal distillation.
3. a kind of crude oil water containing weight testing method that is applied in the oil extraction process according to claim 1 is characterized in that in the described step (c), solvent turns back in the distilling flask.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110326096 CN103048436A (en) | 2011-10-13 | 2011-10-13 | Crude oil water content testing method applied to crude oil extraction process |
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| CN 201110326096 CN103048436A (en) | 2011-10-13 | 2011-10-13 | Crude oil water content testing method applied to crude oil extraction process |
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| CN103048436A true CN103048436A (en) | 2013-04-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606789A (en) * | 2016-01-27 | 2016-05-25 | 韩少鹏 | Method and system for detecting water contents of crude oil of oil field united station |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606789A (en) * | 2016-01-27 | 2016-05-25 | 韩少鹏 | Method and system for detecting water contents of crude oil of oil field united station |
| CN105606789B (en) * | 2016-01-27 | 2017-12-22 | 王君岳 | A kind of field joint stations crude oil water content detection method and detecting system |
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Application publication date: 20130417 |