CN102928320A - Method and apparatus for testing viscous oil viscosity on well boring coring site - Google Patents
Method and apparatus for testing viscous oil viscosity on well boring coring site Download PDFInfo
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Abstract
The present invention provides a method and an apparatus for testing viscous oil viscosity on a well boring coring site, and belongs to the field of tests in oil-gas field exploration and development. According to the present invention, a standard viscosity oil is adopted to calibrate a capillary to obtain a calibration constant of the capillary; a viscous oil sample of the taken rock or detritus is squeezed out, and the squeezed sample passes through a pore type filtration device, and enters a sample chamber; the viscous oil sample in the sample chamber is driven to pass through the calibrated capillary under a certain pressure through a driving pump or a gas pump; and pressure and sample flows on both ends of the capillary are tested, and a viscosity value of the viscous oil sample can be obtained according to a viscosity formula. According to the apparatus, deficiencies of the existing viscosity test method are overcome, the viscous oil sample can be rapidly obtained on the well boring coring site, the viscous oil viscosity test at a reservoir temperature under reservoir pressure can be completed, viscous oil viscosity data can be conveniently and timely acquired, and basis is provided for viscous oil reservoir evaluation and development program formulating.
Description
Technical field
The invention belongs to the field tests in exploration of oil and gas field, the exploitation, be specifically related to a kind of method and apparatus at drilling and coring delivery on-the-spot test viscosity of thickened oil.
Background technology
Viscosity is to estimate one of most important parameter of heavy crude reservoir.Heavy crude reservoir evaluation, development plan are formulated, collect defeated to high-quality viscosity data and processing is all extremely important.Volatile constituent in the viscous crude is very large to the viscosity influence of viscous crude, wants to obtain accurately viscosity of crude data, needs can reflect the active crude oil sample of oil reservoir virgin state.If can carry out in-site measurement to active crude oil at mining site, then can obtain relatively accurate viscosity data.
The method of test viscosity of thickened oil utilizes different viscosity test instrument equipment to finish viscosity test mostly by the production well wellhead sampling in the laboratory at present.Testing apparatus commonly used comprises various viscosity meters, rotational rheometer, capillary viscosimeter, falling-sphere viscometer etc.
Because viscosity of thickened oil is high, such as the viscosity of thickened oil that has up to (50 ℃ time gas-free oil viscosity) more than 1,000,000 mPa.s, so can only or add other chemical agent and could realize effectively exploitation by steam treatment, great changes have often all occured at aspects such as chemical composition, physicochemical property, occurrence status in the viscous crude sample that obtains by these modes, can not reflect and represent the time of day in the oil reservoir.Transportation from the oil field to the laboratory and storage link, also can be so that the most of light gas component loss in the sample, and these components are very large to viscosity influence, in addition, the high temperature dehydration processing links of carrying out in the laboratory also can cause the further loss of light constituent in the sample, so the viscosity data that the laboratory obtains often can not reflect the genuine property of viscous crude under the reservoir condition.
In the prior art, the patent No. be US 20100043538A1 patent disclosure a kind of method and apparatus (Methods of and apparatus for determining the viscosity of heavy oil) of testing viscosity of thickened oil, instrument wherein comprises temperature sensor and electric transmission system, instrument is lowered in the oil well and tests, ask for viscosity of thickened oil by the relation of temperature and viscosity again, the data of the method are through the match that converts several times, easily produce error, and test and behind drilling completion, carry out, test need to take the production time.Mainly using German RV20 type electricity flow graph in the document " Basic Experiment Study of Theological characteristics of heavy oil " (seeing " special reservoirs " in Dec, 2009) carries out scene acquisition viscous crude sample viscosity in the laboratory, the viscous crude sample takes out that to be transported in the lab process light constituent loss larger, sample can not well reflect the oil reservoir actual conditions, and test data is inaccurate.
The German Haake RS150 of the company type flow graph of main application obtains the test that viscous crude sample viscosity is carried out in the laboratory to the scene in the document " discussion of viscosity of thickened oil test condition " (seeing " Xinjiang petroleum science and technology " the 3rd phase in 2009), sample can not well reflect the oil reservoir actual conditions, and test data is inaccurate.
Summary of the invention
The object of the invention is to solve a difficult problem that exists in the above-mentioned prior art, a kind of method and apparatus at drilling and coring delivery on-the-spot test viscosity of thickened oil is provided, reduce because of the impact on viscosity of thickened oil such as crude oil sampling, crude Treatment and chemical addition agent, can easily and timely obtain more accurately viscosity of thickened oil data at the heavy crude reservoir situ of drilling well, for the heavy crude reservoir evaluation with formulate development plan foundation is provided.
The present invention is achieved by the following technical solutions:
A kind of method at drilling and coring delivery on-the-spot test viscosity of thickened oil said method comprising the steps of:
(1) at first adopts viscosity oil standards that kapillary is demarcated, demarcate each diameter capillaceous and length, obtain each demarcation constant k capillaceous;
(2) rock that obtains in the drilling and coring delivery process or the viscous crude sample in the landwaste are squeezed out;
(3) the viscous crude sample that squeezes out enters the sample chamber after filtering;
(4) drive viscous crude sample in the sample chamber by kapillary, record the pressure differential deltap P at kapillary two ends, and the viscous crude sample flow crosses flow Q capillaceous, then obtain the viscosity numerical value μ of viscous crude sample according to viscosity formula μ=k * Δ P/Q.
A kind of device of realizing described method, described device comprise squeegee pump 1, rock sample chamber 2, constant temperature oven 12 and the second valve 3-2; The landwaste that obtains in the drilling and coring delivery process or sillar are placed in the described rock sample chamber 2;
Described squeegee pump 1 links to each other with rock sample chamber 2 by plunger or mobile piston;
Described rock sample chamber 2 is connected with the import of described porous filter 4 by the second valve 3-2;
The outlet of described porous filter 4 is connected with the entrance of the 3rd valve 3-3, and the outlet of the 3rd valve 3-3 is connected with the left end of oil sample piston container 6, and the left end of oil sample piston container 6 also is connected with the first interface of threeway 7; Left end at oil sample piston container 6 is connected to atmospheric valve 3-10, and its effect is air and the emptying of getting rid of in the piston container, avoids containing in the viscous crude air and causes measuring inaccurate; Described atmospheric valve 3-10 is positioned at constant temperature oven 12 outsides; The right-hand member of oil sample piston container 6 is connected with the sampling pump 8 that is positioned at constant temperature oven 12 outsides by the 4th valve 3-4;
The second interface of described threeway 7 links to each other with precision pressure meter 5;
The 3rd interface of described threeway 7 is connected to vacuum-pumping valve 3-11, and described vacuum-pumping valve 3-11 is positioned at constant temperature oven 12 outsides; The other end of described vacuum-pumping valve 3-11 is connected with the vacuum pump that is positioned at constant temperature oven 12 outsides; The 3rd interface of simultaneously threeway 7 also connects the entrance of at least one sample introduction valve; The outlet of each sample introduction valve is connected with a capillary 11;
Described squeegee pump 1 squeezes out the landwaste in the rock sample chamber 2 or the crude oil in the sillar and enters porous filter 4 by valve 3-2;
Be connected to valve 3-1 in rock sample chamber 2, be used for discharging gas and the emptying of rock sample chamber 2;
Lower end at described kapillary 11 has glass vision panel, at the other light source 9 that is equipped with of glass vision panel, is used for observing and record viscous crude sample process initial liquid level capillaceous and initial time; 12 li of constant temperature ovens autotimer 10 is housed, is used for record viscous crude sample through the time of kapillary 11; The glass vision panel of light source 9, kapillary 11 and autotimer 10 are positioned on the same level line.
Specifically, described device comprises five sample introduction valves, and the entrance of each sample introduction valve all is connected with the 3rd interface of threeway 7.
The specification of every capillary 11 is not identical.
Described squeegee pump 1 adopts electro-hydraulic press or hand-operated hydraulic press or mechanical force (forcing) pump; Described sample presentation pump 8 is precision metering pump or pressure-sustaining gas pump.
Compared with prior art, the invention has the beneficial effects as follows:
(1) utilize the present invention and to finish the test of viscosity of thickened oil under reservoir temperature pressure at the viscosity sample of the on-the-spot quick obtaining viscous crude of drilling and coring delivery, in the drilling and coring delivery process, finish viscosity test, test is carried out synchronously with production, and data are directly to obtain in the experiment, is difficult for producing error;
(2) system can be implemented in the drilling and coring delivery scene and obtains the viscous crude sample and finish fast viscosity test, and the loss of sample light constituent is less, can reflect that more oil reservoir is actual, and data are more accurate;
(3) the present invention has overcome the deficiency of existing viscosity test method, and the viscosity of thickened oil on-site testing device of faster easy row is provided.Utilize the present invention can easily and timely obtain the viscosity of thickened oil data, in the exploitation of heavy crude reservoir, have broad application prospects.
Description of drawings
Fig. 1 is that the present invention is at the structural representation of the device of drilling and coring delivery on-the-spot test viscosity of thickened oil.
Wherein, 1 is that squeegee pump, 2 is constant temperature oven or constant temperature sleeve for the kapillary of different constants, 12 for autotimer, 11 for light source, 10 for sample presentation pump, 9 for threeway, 8 for oil sample piston container, 7 for precision pressure meter (table), 6 for porous filter, 5 for valve, 4 for rock sample chamber, 3.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail:
As shown in Figure 1, a kind of device at drilling and coring delivery on-the-spot test viscosity of thickened oil, described device comprise squeegee pump 1, rock sample chamber 2, constant temperature oven 12 (or constant temperature sleeve) and valve 3-2; Squeegee pump 1 is connected with rock sample chamber 2, and rock sample chamber 2 links to each other with constant temperature oven 12 by the second valve 3-2; Squeegee pump 1 is used for the crude oil in the rock sample in the rock sample chamber 2 being squeezed out and entering porous filter 4 by valve 3-2.Rock sample chamber 2 is used for placing landwaste or the sillar that the drilling and coring delivery process is obtained.On rock sample chamber 2, also be connected to valve 3-1, be used for discharging gas and the emptying of rock sample chamber 2;
Squeegee pump 1 can adopt electro-hydraulic press or hand-operated hydraulic press or mechanical force (forcing) pump;
The second interface of threeway 7 links to each other with precision pressure meter 5 (perhaps being precision pressure gauge), and the 3rd interface of threeway 7 is connected to vacuum-pumping valve 3-11, and described vacuum-pumping valve 3-11 is positioned at constant temperature oven 12 outsides; The other end of described vacuum-pumping valve 3-11 is connected with the vacuum pump that is positioned at constant temperature oven 12 outsides; The 3rd interface of simultaneously threeway 7 also connects the entrance of at least one sample introduction valve; The outlet of each sample introduction valve is connected with a capillary 11.What Fig. 1 provided is the example of 5 sample introduction valves, as required, the sample introduction valve can or be less than 5 more than 5, and correspondingly quantity capillaceous also can or be less than 5 more than 5; Sample introduction valve among Fig. 1 is respectively valve 3-5 to 3-9, and they are connected with the kapillary 11-1 to 11-15 of different size respectively;
Lower end at kapillary 11 has glass vision panel, at the other light source 9 that is equipped with of glass vision panel, is used for observing and recording initial liquid level and the initial time of viscous crude sample process kapillary 11.12 li of constant temperature ovens timer 10 is housed, is used for record viscous crude sample through the time of kapillary 11; The glass vision panel of light source 9, kapillary 11 and counter 10 are positioned on the same level line.
Described sample presentation pump 8 is precision metering pump or pressure-sustaining gas pump.
The specific works process of apparatus of the present invention is as follows:
At first adopt viscosity oil standards that kapillary (11-1 to the 11-5 assembly among Fig. 1) is demarcated, demarcate each diameter capillaceous and length, obtain each demarcation constant k capillaceous;
Then the on-the-spot rock core (landwaste) that obtains of drilling and coring delivery is put into rock sample chamber 2, open valve 3-1, valve-off 3-2, utilize electronic or hand-operated hydraulic press (No. 1 assembly among Fig. 1) actuation plunger or mobile piston with compacting in the rock core fragment (landwaste), after discharging the air in the rock sample chamber 2, valve-off 3-1.
Open valve 3-4, atmospheric valve 3-10 drives precision metering pump or pressure-sustaining gas pump (No. 8 assemblies among Fig. 1), and the piston in the oil sample piston container 6 is moved on to the container left end, closes atmospheric valve 3-10.
Open valve 3-3, valve 3-5,3-6,3-7,3-8,3-9 close, and open valve 3-11, connect vacuum pump, find time more than 30 minutes valve-off 3-11.
Open valve 3-2, start squeegee pump 1, the viscous crude in the sillar is squeezed out; The viscous crude sample that squeezes out falls the contaminant filter in the viscous crude sample by porous filter 4, enters oil sample piston container 6 through the viscous crude sample after filtering; Open valve 3-4, make the piston in the oil sample container 6 move to other one section of container, valve-off 3-3.Open the power supply of constant temperature oven 12, Temperature Setting is arrived reservoir temperature or other experimental temperature, utilize precision metering pump or pressure-sustaining gas pump (No. 8 assemblies among Fig. 1), the viscous crude sample of oil sample piston container is pressurized to experimental pressure or reservoir pressure, stablize more than 2 hours;
Viscosity according to viscous crude is selected kapillary (11-1 to the 11-5 assembly among Fig. 1), viscosity is larger, diameter capillaceous is larger, after selecting well, open corresponding sample introduction valve capillaceous (3-5 to the 3-9 assembly among Fig. 1), start precision metering pump or pressure-sustaining gas pump (No. 8 assemblies among Fig. 1) the viscous crude sample is injected selected kapillary (11-1 to the 11-5 assembly of Fig. 1) with reservoir pressure, when the scale of oil sample process kapillary bottom, the light of light source 9 can not see through the glass vision panel of kapillary lower end, start 10 writing times of autotimer this moment, pressure differential deltap P by precision pressure meter 5 record test kapillary two ends, (volume of whole capillary is demarcated out to adopt autotimer 10 record viscous crude sample flow to cross flow Q capillaceous, what timer obtained is the time that viscous crude flows through whole capillary, and volume just can obtain flow divided by the time.); Obtain viscosity of thickened oil μ according to viscosity formula μ=k * Δ P/Q at last.
Technique scheme is one embodiment of the present invention, for those skilled in the art, on the basis that the invention discloses application process and principle, be easy to make various types of improvement or distortion, and be not limited only to the described method of the above-mentioned embodiment of the present invention, therefore previously described mode is just preferred, and does not have restrictive meaning.
Claims (5)
1. method at drilling and coring delivery on-the-spot test viscosity of thickened oil is characterized in that: said method comprising the steps of:
(1) at first adopts viscosity oil standards that kapillary is demarcated, demarcate each diameter capillaceous and length, obtain each demarcation constant k capillaceous;
(2) rock that obtains in the drilling and coring delivery process or the viscous crude sample in the landwaste are squeezed out;
(3) the viscous crude sample that squeezes out enters the sample chamber after filtering;
(4) drive viscous crude sample in the sample chamber by kapillary, record the pressure differential deltap P at kapillary two ends, and the viscous crude sample flow crosses flow Q capillaceous, then obtain the viscosity numerical value μ of viscous crude sample according to viscosity formula μ=k * Δ P/Q.
2. device of be used for realizing the described method at drilling and coring delivery on-the-spot test viscosity of thickened oil of claim 1, it is characterized in that: described device comprises squeegee pump (1), rock sample chamber (2), constant temperature oven (12) and the second valve (3-2); The landwaste that obtains in the drilling and coring delivery process or sillar are placed in the described rock sample chamber (2);
Described squeegee pump (1) links to each other with rock sample chamber (2) by plunger or mobile piston;
Porous filter (4), oil sample piston container (6), the 3rd valve (3-3), threeway (7), the 4th valve (3-4), precision pressure meter (5), sample introduction valve and kapillary (11) are installed in the described constant temperature oven (12);
Described rock sample chamber (2) is connected by the import of the second valve (3-2) with described porous filter (4);
The outlet of described porous filter (4) is connected with the entrance of the 3rd valve (3-3), the outlet of the 3rd valve (3-3) is connected with the left end of oil sample piston container (6), and the left end of oil sample piston container (6) also is connected with the first interface of threeway (7); Left end at oil sample piston container (6) is connected to atmospheric valve (3-10), and described atmospheric valve (3-10) is positioned at constant temperature oven (12) outside; The right-hand member of oil sample piston container (6) is connected by the 4th valve (3-4) sampling pump (8) outside with being positioned at constant temperature oven (12);
The second interface of described threeway (7) links to each other with precision pressure meter (5);
The 3rd interface of described threeway (7) is connected to vacuum-pumping valve (3-11), and described vacuum-pumping valve (3-11) is positioned at constant temperature oven (12) outside; The other end of described vacuum-pumping valve (3-11) vacuum pump outside with being positioned at constant temperature oven (12) is connected; The 3rd interface of simultaneously threeway (7) also connects the entrance of at least one sample introduction valve; The outlet of each sample introduction valve is connected with a capillary (11);
Described squeegee pump (1) is with the landwaste in rock sample chamber (2) or the crude oil in the sillar squeezes out and enter porous filter (4) by valve (3-2);
Be connected to valve (3-1) in rock sample chamber (2), be used for discharging gas and the emptying of rock sample chamber (2);
Lower end at described kapillary (11) has glass vision panel, at the other light source (9) that is equipped with of glass vision panel, is used for observing and record viscous crude sample process initial liquid level capillaceous and initial time; At the inner autotimer (10) that is equipped with of constant temperature oven (12), be used for record viscous crude sample through the time of kapillary (11); The glass vision panel of light source (9), kapillary (11) and autotimer (10) are positioned on the same level line.
3. the device at drilling and coring delivery on-the-spot test viscosity of thickened oil according to claim 2, it is characterized in that: described device comprises five sample introduction valves, the entrance of each sample introduction valve all is connected with the 3rd interface of threeway (7).
4. according to claim 2 or 3 described devices at drilling and coring delivery on-the-spot test viscosity of thickened oil, it is characterized in that: the specification of every capillary (11) is not identical.
5. the device at drilling and coring delivery on-the-spot test viscosity of thickened oil according to claim 2 is characterized in that: described squeegee pump (1) employing electro-hydraulic press or hand-operated hydraulic press or mechanical force (forcing) pump; Described sample presentation pump (8) is precision metering pump or pressure-sustaining gas pump.
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| CN104632189A (en) * | 2014-12-11 | 2015-05-20 | 聚亨通（天津）石油设备科技发展有限公司 | Automatic thickened oil detection system and automatic oil extraction assistant injection amount adjusting system |
| CN104749348A (en) * | 2013-12-31 | 2015-07-01 | 丹佛斯（天津）有限公司 | Method for measuring dilutability and viscosity of lubricating oil, control method and module and refrigerating air-conditioning system |
| CN109342268A (en) * | 2018-11-23 | 2019-02-15 | 大连海事大学 | A kind of quickly full-automatic kinematic viscosity measurement device |
| CN110006783A (en) * | 2018-12-05 | 2019-07-12 | 浙江出入境检验检疫局检验检疫技术中心 | One kind automatically flowing out cup type viscosity determinator |
| CN111665168A (en) * | 2019-03-07 | 2020-09-15 | 中国石油化工股份有限公司 | Device and method for detecting fluid viscosity under pressure pulse condition |
| CN114509369A (en) * | 2021-12-27 | 2022-05-17 | 中国石油大学(华东) | Device and method for evaluating viscosity reducing effect of water-soluble viscous oil viscosity reducer |
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| CN104749348A (en) * | 2013-12-31 | 2015-07-01 | 丹佛斯（天津）有限公司 | Method for measuring dilutability and viscosity of lubricating oil, control method and module and refrigerating air-conditioning system |
| CN104632189A (en) * | 2014-12-11 | 2015-05-20 | 聚亨通（天津）石油设备科技发展有限公司 | Automatic thickened oil detection system and automatic oil extraction assistant injection amount adjusting system |
| CN109342268A (en) * | 2018-11-23 | 2019-02-15 | 大连海事大学 | A kind of quickly full-automatic kinematic viscosity measurement device |
| CN109342268B (en) * | 2018-11-23 | 2024-02-27 | 大连海事大学 | Quick full-automatic kinematic viscosity measuring device |
| CN110006783A (en) * | 2018-12-05 | 2019-07-12 | 浙江出入境检验检疫局检验检疫技术中心 | One kind automatically flowing out cup type viscosity determinator |
| CN111665168A (en) * | 2019-03-07 | 2020-09-15 | 中国石油化工股份有限公司 | Device and method for detecting fluid viscosity under pressure pulse condition |
| CN114509369A (en) * | 2021-12-27 | 2022-05-17 | 中国石油大学(华东) | Device and method for evaluating viscosity reducing effect of water-soluble viscous oil viscosity reducer |
| CN114509369B (en) * | 2021-12-27 | 2023-12-05 | 中国石油大学(华东) | Device and method for evaluating viscosity reducing effect of water-soluble thickened oil viscosity reducing agent |
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