CN102928320B - 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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- CN102928320B CN102928320B CN201110227128.8A CN201110227128A CN102928320B CN 102928320 B CN102928320 B CN 102928320B CN 201110227128 A CN201110227128 A CN 201110227128A CN 102928320 B CN102928320 B CN 102928320B
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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, 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 evaluate 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 viscous crude is very large to the viscosity influence of viscous crude, wants to obtain viscosity of crude data accurately, 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, can obtain relatively accurate viscosity data.
The method of test viscosity of thickened oil, mostly by production well wellhead sampling, utilizes different viscosity test instrument equipment to complete viscosity test in laboratory at present.Conventional testing apparatus 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 having is up to 1,000,000 mPa.s above (50 DEG C time gas-free oil viscosity), so can only or add other chemical agent and could realize effectively exploitation by steam treatment, often all having there are great changes at aspects such as chemical composition, physicochemical property, occurrence status in the viscous crude sample obtaining by these modes, can not reflect and represent the time of day in oil reservoir.Transport from oil field to laboratory and storage link, also can make the most of light gas component loss in sample, and these components are very large to viscosity influence, in addition, the high temperature dehydration processing links of carrying out in laboratory also can cause sample in the further loss of light constituent, so the viscosity data that laboratory obtains often can not reflect the genuine property of viscous crude under reservoir condition.
In prior art, the patent No. is that the patent of US 20100043538A1 discloses 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 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 matching that converts several times, easily produce error, and test and carry out after drilling completion, test need to take the production time.In document " Basic Experiment Study of Theological characteristics of heavy oil " (seeing " special reservoirs " in Dec, 2009), mainly the German RV20 type electricity of application flow graph carries out scene acquisition viscous crude sample viscosity in laboratory, the taking-up of viscous crude sample is transported to light constituent in lab process and loses larger, sample can not well reflect oil reservoir actual conditions, and test data is inaccurate.
In document " discussion of viscosity of thickened oil test condition " (seeing " Xinjiang petroleum science and technology " the 3rd phase in 2009), the German Haake RS150 of the company type flow graph of main application obtains to scene the test that viscous crude sample viscosity is carried out in laboratory, sample can not well reflect oil reservoir actual conditions, and test data is inaccurate.
Summary of the invention
The object of the invention is to solve the difficult problem existing in 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 the impact on viscosity of thickened oil such as crude oil sampling, crude Treatment and chemical addition agent, can easily and timely obtain viscosity of thickened oil data more accurately at heavy crude reservoir situ of drilling well, for heavy crude reservoir evaluation and formulate development plan foundation is provided.
The present invention is achieved by the following technical solutions:
In a method for drilling and coring delivery on-the-spot test viscosity of thickened oil, said method comprising the steps of:
(1) first adopt viscosity oil standards to demarcate kapillary, demarcate each diameter capillaceous and length, obtain each demarcation constant k capillaceous;
(2) the viscous crude sample in the rock or the landwaste that obtain in drilling and coring delivery process is squeezed out;
(3) the viscous crude sample squeezing out enters sample chamber after filtering;
(4) drive viscous crude sample in sample chamber by kapillary, record the pressure differential deltap P at kapillary two ends, and viscous crude sample flows through flow Q capillaceous, then obtain the viscosity numerical value μ of viscous crude sample according to viscosity formula μ=k × Δ P/Q.
Realize a device for described method, described device comprises squeegee pump 1, rock sample chamber 2, constant temperature oven 12 and the second valve 3-2; The landwaste obtaining in drilling and coring delivery process or sillar are placed in described rock sample chamber 2;
Described squeegee pump 1 is connected 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 described constant temperature oven 12;
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 is also 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 piston container, avoids containing air in viscous crude 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 is connected 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 threeway 7 simultaneously 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 crude oil in the landwaste in rock sample chamber 2 or sillar and enters porous filter 4 by valve 3-2;
On rock sample chamber 2, be connected to valve 3-1, 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, for observing and record viscous crude sample through initial liquid level capillaceous and initial time; 12 li of constant temperature ovens, autotimer 10 is housed, for recording the time of viscous crude sample through kapillary 11; The glass vision panel of light source 9, kapillary 11 and autotimer 10 are positioned on same level line.
Specifically, described device comprises five sample introduction valves, and the entrance of each sample introduction valve is all 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 complete the test of viscosity of thickened oil under reservoir temperature pressure at the on-the-spot thick oil viscosity sample of quick obtaining of drilling and coring delivery, in drilling and coring delivery process, complete viscosity test, test is synchronizeed and is carried out with production, and data are directly to obtain in experiment, is difficult for producing error;
(2) system can realize and obtain viscous crude sample at drilling and coring delivery scene and complete fast viscosity test, and the loss of sample light constituent is less, more can reflect oil reservoir reality, 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 viscosity of thickened oil data, in the exploitation of heavy crude reservoir, have broad application prospects.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention at the device of drilling and coring delivery on-the-spot test viscosity of thickened oil.
Wherein, 1 is that squeegee pump, 2 is that rock sample chamber, 3 is that valve, 4 is that porous filter, 5 is that precision pressure meter (table), 6 is that oil sample piston container, 7 is that threeway, 8 is that sample presentation pump, 9 is that light source, 10 is that the kapillaries, 12 that autotimer, 11 is different constants are constant temperature oven or constant temperature sleeve.
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 comprises 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 is connected 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 rock sample chamber 2 being squeezed out and entering porous filter 4 by valve 3-2.Landwaste or sillar that rock sample chamber 2 obtains for placing drilling and coring delivery process.On rock sample chamber 2, be also connected to valve 3-1, 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;
Porous filter 4 is installed in constant temperature oven 12, the outlet of the second valve 3-2 is connected with the import of porous filter 4, the outlet of 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 is also 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 piston container, avoids containing air in viscous crude 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 sample presentation pump 8 that is positioned at constant temperature oven 12 outsides by the 4th valve 3-4;
The second interface of threeway 7 is connected with precision pressure meter 5 (or 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 threeway 7 simultaneously 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, 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 in 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, for observing and record initial liquid level and the initial time of viscous crude sample through kapillary 11.12 li of constant temperature ovens, timer 10 is housed, for recording the time of viscous crude sample through kapillary 11; The glass vision panel of light source 9, kapillary 11 and counter 10 are positioned on 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:
First adopt viscosity oil standards to demarcate kapillary (11-1 to the 11-5 assembly in Fig. 1), demarcate each diameter capillaceous and length, obtain each demarcation constant k capillaceous;
Then the on-the-spot drilling and coring delivery rock core (landwaste) obtaining 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 in Fig. 1) actuation plunger or mobile piston by compacting in rock core fragment (landwaste), discharge after the air in 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 in Fig. 1), and the piston in oil sample piston container 6 is moved on to 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, and valve-off 3-11.
Open valve 3-2, start squeegee pump 1, the viscous crude in sillar is squeezed out; The viscous crude sample squeezing out falls the contaminant filter in viscous crude sample by porous filter 4, and the viscous crude sample after filtering enters oil sample piston container 6; Open valve 3-4, make the piston in 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 to reservoir temperature or other experimental temperature, utilize precision metering pump or pressure-sustaining gas pump (No. 8 assemblies in Fig. 1), the viscous crude sample of oil sample piston container is pressurized to experimental pressure or reservoir pressure, stablize more than 2 hours;
Select kapillary (11-1 to the 11-5 assembly in Fig. 1) according to thick oil viscosity, viscosity is larger, diameter capillaceous is larger, after selecting well, open corresponding sample introduction valve capillaceous (3-5 to the 3-9 assembly in Fig. 1), start precision metering pump or pressure-sustaining gas pump (No. 8 assemblies in Fig. 1) viscous crude sample is injected to selected kapillary (11-1 to the 11-5 assembly of Fig. 1) with reservoir pressure, in the time of 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, now start 10 writing times of autotimer, by the pressure differential deltap P at precision pressure meter 5 record test kapillary two ends, adopting autotimer 10 to record viscous crude sample flows through flow Q capillaceous (volume of whole capillary is demarcated out, what timer obtained is the time that viscous crude flows through whole capillary, volume just can obtain flow divided by the time.); Finally obtain viscosity of thickened oil μ according to viscosity formula μ=k × Δ P/Q.
Technique scheme is one embodiment of the present invention, for those skilled in the art, the invention discloses on the basis of 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. at a device for drilling and coring delivery on-the-spot test viscosity of thickened oil, 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 obtaining in drilling and coring delivery process or sillar are placed in described rock sample chamber (2);
Described squeegee pump (1) is connected 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 described constant temperature oven (12);
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), 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) is also connected with the first interface of threeway (7); Be connected to atmospheric valve (3-10) at the left end of oil sample piston container (6), 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) is connected 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 threeway simultaneously (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 rock sample chamber (2) or the crude oil in sillar pass through the second valve (3-2) and enters porous filter (4);
On rock sample chamber (2), be connected to the first valve (3-1), 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, for observing and record viscous crude sample through initial liquid level capillaceous and initial time; At the inner autotimer (10) that is equipped with of constant temperature oven (12), for recording the time of viscous crude sample through kapillary (11); The glass vision panel of light source (9), kapillary (11) and autotimer (10) are positioned on same level line.
2. the device at drilling and coring delivery on-the-spot test viscosity of thickened oil according to claim 1, is characterized in that: described device comprises five sample introduction valves, and the entrance of each sample introduction valve is all connected with the 3rd interface of threeway (7).
3. the device at drilling and coring delivery on-the-spot test viscosity of thickened oil according to claim 1 and 2, is characterized in that: the specification of every capillary (11) is not identical.
4. the device at drilling and coring delivery on-the-spot test viscosity of thickened oil according to claim 1, is characterized in that: described squeegee pump (1) adopts electro-hydraulic press or hand-operated hydraulic press or mechanical force (forcing) pump; Described sampling pump (8) is precision metering pump or pressure-sustaining gas pump.
5. the method at drilling and coring delivery on-the-spot test viscosity of thickened oil of utilizing the described device at drilling and coring delivery on-the-spot test viscosity of thickened oil of one of claim 1 to 4 to realize, is characterized in that: said method comprising the steps of:
(1) first adopt viscosity oil standards to demarcate kapillary, demarcate each diameter capillaceous and length, obtain each demarcation constant k capillaceous;
(2) the viscous crude sample in the rock or the landwaste that obtain in drilling and coring delivery process is squeezed out;
(3) the viscous crude sample squeezing out enters sample chamber after filtering;
(4) drive viscous crude sample in sample chamber by kapillary, record the pressure reduction △ P at kapillary two ends, and viscous crude sample flows through flow Q capillaceous, then obtain the viscosity numerical value μ of viscous crude sample according to viscosity formula μ=k × △ P/Q.
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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 |
| 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 |
| CN111665168B (en) * | 2019-03-07 | 2023-05-23 | 中国石油化工股份有限公司 | Device and method for detecting viscosity of fluid under pressure pulse condition |
| 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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