CN203443940U - Online chromatographic decompressing sample-injection device - Google Patents
Online chromatographic decompressing sample-injection device Download PDFInfo
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- CN203443940U CN203443940U CN201320515876.0U CN201320515876U CN203443940U CN 203443940 U CN203443940 U CN 203443940U CN 201320515876 U CN201320515876 U CN 201320515876U CN 203443940 U CN203443940 U CN 203443940U
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Abstract
The utility model provides an online chromatographic decompressing sample-injection device. The device at least comprises a cavity, an outer lead screw, an inner lead screw, a movable piston body, a check valve, a visual window, an upper end cover, a lower end support, a gas measuring chromatographic instrument, a vacuum pump, a PVT (pressure-volume-temperature) fluid phase state analyzer, an oil measuring chromatographic instrument sampling bottle, an oil measuring chromatographic instrument, a density meter, a controller, a pressure sensor, a stepping motor and an electric heater, wherein the outer lead screw, the movable piston body and the check valve are located inside the cavity, and the inner lead screw is partially located inside the cavity; the visual window is located on the side surface of the cavity; the upper end cover and the lower end support are located at the top and the bottom of the cavity; the gas measuring chromatographic instrument, the vacuum pump, the oil measuring chromatographic instrument sampling bottle, the density meter and the PVT fluid phase state analyzer are connected with the cavity respectively; and the controller is connected with the pressure sensor, the electric heater and the stepping motor. With the adoption of the device, online sampling, online sample transferring and automatic sample loading of high-pressure formation fluids are realized, and technical support is provided for high-pressure analysis of oil and gas reservoir fluids.
Description
Technical field
The utility model relates to a kind of on-line chromatograph decompression sampling device, belongs to the resident fluid phase state analysis technical field in oil-gas field development field.
Background technology
Along with domestic and international new oil gas field is constantly found, formation fluid sample phase state analysis test volume continues to increase.The test analysis project of reservoir fluid sample mainly comprises: flash distillation experiment, differential liberation, constant volume depletion, viscosity test, stratographic analysis, density measurement etc.Main test parameter mainly comprises: the parameters such as output gas oil ratio, volume factor, compressibility coefficient, well stream thing composition, dead oil density, irreducible oil density, formation oil viscosity, this wherein the acquisition of most parameters all be unable to do without and utilize chromatography analysis oil gas to form.
The gas chromatograph of main flow, general admission pressure can not be higher than 1MPa, and inlet hydraulic is normal pressure.In resident fluid phase state analysis process, for the sampling of gaseous sample, be generally after the gases at high pressure step-down in PVT fluid phase state analyser, to adopt 100mL syringe manually to get gas, to be then injected in chromatograph; For the sampling of fluid sample, be generally by the special-purpose sampling jar of the chromatograph that is injected into 2mL after the highly pressurised liquid step-down in PVT fluid phase state analyser, then put on chromatograph and analyze.
Yet how conventional resident fluid phase test pressure conventionally between 25-130MPa, realizes that directly to enter chromatograph analysis after resident fluid high-pressure sampling be one of this area difficult problem urgently to be resolved hurrily always.
Utility model content
For solving the problems of the technologies described above, the purpose of this utility model is to provide a kind of on-line chromatograph decompression sampling device.The high pressure that on-line chromatograph decompression sampling device of the present utility model can be realized high pressure formation fluid samples, turns online sample, automatic load sample online, can provide strong technical support for the Hi-pot test analysis of reservoir fluid.
For reaching above-mentioned purpose, the utility model provides a kind of on-line chromatograph decompression sampling device, it is characterized in that, this device at least comprises:
Cavity, outer silk cylinder, interior leading screw, moveable piston body, ball-and-seat, visual window, upper end cover, lower end holder, survey complexion spectrometer, vacuum pump, PVT fluid phase state analyser, survey oil colours spectrometer sampling jar, survey oil colours spectrometer, densitometer, controller, pressure transducer, stepper motor and electric heater;
Wherein, described outer silk cylinder, moveable piston body and ball-and-seat are positioned at the inside of described cavity, described interior leading screw is partly positioned at the inside of described cavity, described outer leading screw is connected with described interior leading screw packaged tube shape, described interior leading screw longitudinally runs through described cavity, the two ends of described outer leading screw contact with lower inwall with the upper inwall of described cavity, described moveable piston body be connected with described outer leading screw (being spirally connected), and the two ends of described moveable piston body contact with the both sides inwall of described cavity, described ball-and-seat is positioned on described moveable piston body, described interior leading screw drives described outer leading screw to rotate, described outer leading screw drives described moveable piston body to move up and down, described moveable piston body is used to gas and the liquid (oil product) in formation fluid sample that the power that enters survey complexion spectrometer and survey oil colours spectrometer is provided respectively, described ball-and-seat flows (from bottom to top for guaranteeing the gas unidirectional of formation fluid sample, , approach axis from formation fluid sample flows to the chromatographic direction of survey gas),
Described visual window is positioned at the bottom of the side surface of described cavity, for observing the amount of the crude oil of formation fluid sample;
Described upper end cover is positioned at the top of described cavity, and described lower end restitope is in the bottom of described cavity, and the effect of upper end cover and lower end holder is protection cavity fixing outer leading screw and interior leading screw;
Described survey complexion spectrometer is connected with the top, side of described cavity by pipeline, and in this pipeline, be provided with the first valve, this survey complexion spectrometer forms (gas in formation fluid sample is entered and surveyed complexion spectrometer by pipeline and the chromatographic syringe of survey gas) for the gas composition of on-line analysis formation fluid sample;
Described vacuum pump is connected with the top, side of described cavity by pipeline, and is provided with the 5th valve in this pipeline, and this vacuum pump is for vacuumizing inside cavity;
Described survey oil colours spectrometer sampling jar is connected with the bottom, side of described cavity by pipeline and threeway with described densitometer, and be provided with the 3rd valve in the pipeline near described cavity, in the pipeline near described survey oil colours spectrometer sampling jar, be provided with the 6th valve, in being provided with the second valve near described densitometric pipeline, described survey oil colours spectrometer sampling jar is arranged in described survey oil colours spectrometer, described survey oil colours spectrometer forms (crude oil in formation fluid sample enters survey oil colours spectrometer by surveying oil colours spectrometer sampling jar) for the oil component of on-line analysis formation fluid sample, described densitometer is for measuring the density of the crude oil of formation fluid sample,
Described PVT fluid phase state analyser is connected with the bottom, side of described cavity by pipeline, and in this pipeline, be provided with the 4th valve, this PVT fluid phase state analyser is used for the high pressure property of formation testing fluid sample and holds this formation fluid sample (cavity outlet that connects PVT fluid phase state analyser can be positioned at and connect the below of surveying oil colours spectrometer sampling jar and densitometric cavity outlet);
Described pressure transducer is connected in the top, side of described cavity, for measuring and showing the pressure in described cavity;
Described stepper motor is positioned at the bottom of described cavity and is connected with described leading screw, for controlling described interior leading screw, rotates;
Described electric heater is positioned at the bottom of described cavity, is used to described cavity that experimental temperature is provided;
Described controller is connected in described pressure transducer, described stepper motor and described electric heater, for described pressure transducer, described stepper motor and described electric heater are controlled.
In above-mentioned device, preferably, described electric heater is electric heating tube, and it is positioned at the holder of described lower end, to provide heat to cavity better.
In above-mentioned device, preferably, at described upper end cover and described lower end, ask the position contacting with described cavity to be provided with pad; The position contacting with lower inwall at the two ends of described outer leading screw and the upper inwall of described cavity, and the position that the two ends of described moveable piston body contact with the both sides inwall of described cavity is provided with O type circle.Described pad and described O type enclose the effect of seal chamber.Those skilled in the art can also increase the seal members such as pad and O type circle in said apparatus, to strengthen the sealing of cavity.
In the utility model, described survey complexion spectrometer and described survey oil colours spectrometer are the conventional gas chromatograph using in this area, to the method for the composition analysis of the gas composition in formation fluid sample and oil component, can be all the conventional vapor-phase chromatography adopting in this area.
In the utility model, adopt above-mentioned on-line chromatograph decompression sampling device to carry out the on-line chromatograph decompression sample injection method of sample introduction, it can comprise the following steps:
(1), close the first valve, the second valve, the 3rd valve, the 4th valve and the 6th valve, open the 5th valve and start vacuum pump, cavity is vacuumized;
(2) heating-up temperature of, utilizing controller to set electric heater is experimental temperature;
(3), close the first valve, the second valve, the 3rd valve, the 5th valve and the 6th valve, open the 4th valve, high pressure formation fluid sample in PVT fluid phase state analyser is injected in cavity, by visual window, observe oil product (crude oil) amount visible (the oil product amount of injection can not surpass the top of visual window) of the high pressure formation fluid injecting, close the 4th valve;
(4), remove vacuum pump, open the 5th valve, when the pressure in cavity reaches 0.5-1MPa, close the 5th valve;
(5), open the 3rd valve and the 6th valve, a certain amount of oil product in cavity is entered survey oil colours spectrometer sampling jar and then enters to survey oil colours spectrometer (when the position of surveying oil colours spectrometer sampling jar is when connecting the position of surveying oil colours spectrometer sampling jar and densitometric cavity outlet, oil product is surveyed oil colours spectrometer sampling jar because the pressure differential inside and outside cavity enters; In addition, can also optionally utilize controller control step motor that interior leading screw is rotated, drive outer leading screw rotation, and then make moveable piston body to side shifting under cavity, make the oil product in cavity enter survey oil colours spectrometer), close the 6th valve;
(6), open the second valve, make a certain amount of oil product enter densitometer (when the position of oil colours spectrometer sampling jar and densitometric cavity outlet is surveyed higher than connection in densitometric position, oil product is because the pressure differential inside and outside cavity enters densitometer), close the second valve and the 3rd valve;
(7), open the first valve, utilize controller control step motor that interior leading screw is rotated, drive outer leading screw to rotate, and then to make moveable piston body move and keep the pressure in cavity to cavity upside (gas one side) be 0.3-0.8MPa, gas in cavity enters surveys complexion spectrometer, after surveying complexion spectrometer demonstration " injecting successfully ", close the first valve, stop stepper motor.
In above-mentioned on-line chromatograph decompression sample injection method, preferably, the time that cavity is vacuumized is 2 hours.
In above-mentioned on-line chromatograph decompression sample injection method, preferably, described experimental temperature is room temperature to 180 ℃.
In above-mentioned on-line chromatograph decompression sample injection method, preferably, the volume that is injected into the high pressure formation fluid sample in cavity is 10-30mL.
In above-mentioned on-line chromatograph decompression sample injection method, preferably, the volume that enters the oil product of surveying oil colours spectrometer sampling jar is 0.5-1mL.
In above-mentioned on-line chromatograph decompression sample injection method, preferably, the volume that enters densitometric oil product is 3-5mL.
The utility model provides a kind of on-line chromatograph decompression sampling device, and this device has been realized high pressure and sampled online, turns online sample, automatic load sample; For the Hi-pot test analysis of reservoir fluid, save the plenty of time, saved a large amount of intermediate link, avoided the interference of personal error and environment; And realized and surveyed gas composition, surveyed oil composition, surveyed completing continuously of oil density; Also improved the integrated level of experimental technique, for the robotization of reservoir fluid phase measuring technology control provide may, for the Hi-pot test analysis of reservoir fluid provides strong technical support, can serve better field produces.
Accompanying drawing explanation
Fig. 1 is the structural representation of the on-line chromatograph decompression sampling device of embodiment 1.
Primary clustering symbol description:
Interior leading screw 3 moveable piston body 4 ball-and-seat 5 visual windows 6 of 1 outer cylinder of cavity 2
Complexion spectrometer 9 vacuum pump 10 PVT fluid phase state analysers 11 are surveyed in upper end cover 7 lower end holders 8
Survey oil colours spectrometer sampling jar 12 densitometer 13 controller 14 pressure transducers 15
Stepper motor 16 electric heating tube 17 first valve 18 second valve 19 the 3rd valves 20
The 4th valve 21 the 5th valve 22 the 6th valve 23 is surveyed oil colours spectrometer 24
Embodiment
Embodiment 1
The present embodiment provides a kind of on-line chromatograph decompression sampling device, and as shown in Figure 1, it at least comprises:
Cavity 1, outer silk cylinder 2, interior leading screw 3, moveable piston body 4, ball-and-seat 5, visual window 6, upper end cover 7, lower end holder 8, survey complexion spectrometer 9, vacuum pump 10, PVT fluid phase state analyser 11, survey oil colours spectrometer sampling jar 12, survey oil colours spectrometer 24, densitometer 13, controller 14, pressure transducer 15, stepper motor 16, electric heating tube 17;
Wherein, described outer silk cylinder 2, moveable piston body 4 and ball-and-seat 5 are positioned at the inside of described cavity 1, described interior leading screw 3 parts are positioned at the inside of described cavity 1, described outer leading screw 2 is connected with the complete tubulose of described interior leading screw 3, described interior leading screw 3 longitudinally runs through described cavity, the two ends of described outer leading screw 2 contact with lower inwall with the upper inwall of described cavity 1, the position that leading screw 2 contacts with cavity 1 is outside provided with O type circle, described moveable piston body 4 be connected with described outer leading screw 2 (being spirally connected), and the two ends of described moveable piston body 4 contact with the both sides inwall of described cavity 1, the position contacting with cavity 1 at moveable piston body 4 is provided with O type circle, described ball-and-seat 5 is positioned on described moveable piston body 4, described interior leading screw 3 drives described outer leading screw 2 to rotate, described outer leading screw 2 drives described moveable piston body 4 to move up and down, described moveable piston body 4 is used to the gas in formation fluid sample to provide and enters the power of surveying complexion spectrometer 9, described ball-and-seat 5 flows (from bottom to top for guaranteeing the gas unidirectional of formation fluid sample, , approach axis from formation fluid sample flows to the direction of surveying complexion spectrometer 9),
Described visual window 6 is positioned at the bottom of the side surface of described cavity 1, for observing the amount of the crude oil of formation fluid sample;
Described upper end cover 7 is positioned at the top of described cavity 1, described lower end holder 8 is positioned at the bottom of described cavity, upper end cover 7 is protection cavity 1 fixing outer leading screw 2 and interior leading screw 3 with the effect of lower end holder 8, at upper end cover 7 and holder 8 positions that are connected with cavity 1, lower end, is provided with pad;
Described survey complexion spectrometer 9 is connected with the top, side of described cavity 1 by pipeline, and is provided with the first valve 18 in this pipeline, and this is surveyed complexion spectrometer 9 gas compositions for on-line analysis formation fluid sample and forms;
Described vacuum pump 10 is connected with the top, side of described cavity 1 by pipeline, and is provided with the 5th valve 22 in this pipeline, and this vacuum pump 10 is for vacuumizing cavity 1 inside;
Described survey oil colours spectrometer sampling jar 12 is connected with the bottom, side of described cavity 1 by pipeline and threeway with described densitometer 13, and be provided with the 3rd valve 20 in the pipeline near described cavity 1, in the pipeline near described survey oil colours spectrometer sampling jar 12, be provided with the 6th valve 23, in the pipeline near described densitometer 13, be provided with the second valve 19, described survey oil colours spectrometer sampling jar 12 is arranged in described survey oil colours spectrometer 24, described survey oil colours spectrometer 24 oil components for on-line analysis formation fluid sample form, described densitometer 13 is for measuring the density of the crude oil of formation fluid sample,
Described PVT fluid phase state analyser 11 is connected with the bottom, side of described cavity 1 by pipeline, and in this pipeline, be provided with the 4th valve 21, these PVT fluid phase state analyser 11 high pressure properties for formation testing fluid sample also hold this formation fluid sample;
Described pressure transducer 15 is connected in the top, side of described cavity 1, for measuring and showing the pressure in described cavity 1;
Described stepper motor 16 is positioned at the bottom of described cavity 1 and is connected with described leading screw 3, for controlling described interior leading screw 3, rotates;
Described electric heating tube 17 is positioned at the lower end holder 8 of described cavity 1 bottom, is used to described cavity 1 that experimental temperature is provided;
Described controller 14 is connected in described pressure transducer 15, described stepper motor 16 and described electric heating tube 17, for described pressure transducer 15, described stepper motor 16 and described electric heating tube 17 are controlled.
Adopt above-mentioned on-line chromatograph decompression sampling device to carry out the on-line chromatograph decompression sample injection method of sample introduction, it comprises the following steps:
(1), close the first valve 18, the second valve 19, the 3rd valve 20, the 4th valve 21 and the 6th valve 23, open the 5th valve 22 and start vacuum pump 10, cavity 1 is carried out vacuumizing for 2 hours;
(2) heating-up temperature of, utilizing controller 14 to set electric heating tube 17 is 30 ℃ of experimental temperatures;
(3), close the first valve 18, the second valve 19, the 3rd valve 20, the 5th valve 22 and the 6th valve 23, open the 4th valve 21, high pressure formation fluid sample in PVT fluid phase state analyser 11 is injected in cavity 1, injection rate IR is 20mL, by visual window 6, observe the oil product amount visible (the oil product amount of injection can not surpass the top of visual window 6) of the high pressure formation fluid injecting, close the 4th valve 21;
(4), remove vacuum pump 10, open the 5th valve 22, when the pressure in adopts pressure sensor 15 detects cavity 1 reaches 0.6MPa, close the 5th valve 22;
(5), open the 3rd valve 20 and the 6th valve 23, a certain amount of oil product in cavity 1 is entered survey oil colours spectrometer sampling jar 12 and then enter to survey oil colours spectrometer 24, close the 6th valve 23, the volume that enters the oil product of surveying oil colours spectrometer sampling jar 12 is 0.6mL;
(6), open the second valve 19, utilize the pressure in cavity 1 to make a certain amount of oil product enter densitometer 13, close the second valve 19 and the 3rd valve 20, the volume that enters the oil product of densitometer 13 is 3-5mL;
(7), open the first valve 18, utilize controller 14 control step motors 16 that interior leading screw 3 is rotated, drive outer leading screw 2 to rotate, and then to make moveable piston body 4 move and keep the pressure in cavity 1 to cavity 1 upside (gas one side) be 0.65MPa, gas in cavity 1 enters surveys complexion spectrometer 9, after surveying 9 demonstrations " injecting successfully " of complexion spectrometer, close the first valve 18, stop stepper motor 16.
Claims (3)
1. an on-line chromatograph decompression sampling device, is characterized in that, this device at least comprises:
Cavity, outer silk cylinder, interior leading screw, moveable piston body, ball-and-seat, visual window, upper end cover, lower end holder, survey complexion spectrometer, vacuum pump, PVT fluid phase state analyser, survey oil colours spectrometer sampling jar, survey oil colours spectrometer, densitometer, controller, pressure transducer, stepper motor and electric heater;
Wherein, described outer silk cylinder, moveable piston body and ball-and-seat are positioned at the inside of described cavity, described interior leading screw is partly positioned at the inside of described cavity, described outer leading screw is connected with described interior leading screw packaged tube shape, described interior leading screw longitudinally runs through described cavity, the two ends of described outer leading screw contact with lower inwall with the upper inwall of described cavity, described moveable piston body is connected with described outer leading screw, and the two ends of described moveable piston body contact with the both sides inwall of described cavity, described ball-and-seat is positioned on described moveable piston body;
Described visual window is positioned at the bottom of the side surface of described cavity;
Described upper end cover is positioned at the top of described cavity, and described lower end restitope is in the bottom of described cavity;
Described survey complexion spectrometer is connected with the top, side of described cavity by pipeline, and is provided with the first valve in this pipeline;
Described vacuum pump is connected with the top, side of described cavity by pipeline, and is provided with the 5th valve in this pipeline;
Described survey oil colours spectrometer sampling jar is connected with the bottom, side of described cavity by pipeline and threeway with described densitometer, and be provided with the 3rd valve in the pipeline near described cavity, in the pipeline near described survey oil colours spectrometer sampling jar, be provided with the 6th valve, in being provided with the second valve near described densitometric pipeline, described survey oil colours spectrometer sampling jar is arranged in described survey oil colours spectrometer;
Described PVT fluid phase state analyser is connected with the bottom, side of described cavity by pipeline, and is provided with the 4th valve in this pipeline;
Described pressure transducer is connected in the top, side of described cavity;
Described stepper motor is positioned at the bottom of described cavity and is connected with described leading screw;
Described electric heater is positioned at the bottom of described cavity;
Described controller is connected in described pressure transducer, described stepper motor and described electric heater.
2. on-line chromatograph decompression sampling device according to claim 1, is characterized in that, described electric heater is electric heating tube, and is positioned at the holder of described lower end.
3. on-line chromatograph decompression sampling device according to claim 1, is characterized in that, at described upper end cover and described lower end, asks the position contacting with described cavity to be provided with pad; The position contacting with lower inwall at the two ends of described outer leading screw and the upper inwall of described cavity, and the position that the two ends of described moveable piston body contact with the both sides inwall of described cavity is provided with O type circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320515876.0U CN203443940U (en) | 2013-08-22 | 2013-08-22 | Online chromatographic decompressing sample-injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320515876.0U CN203443940U (en) | 2013-08-22 | 2013-08-22 | Online chromatographic decompressing sample-injection device |
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| CN203443940U true CN203443940U (en) | 2014-02-19 |
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| CN201320515876.0U Expired - Fee Related CN203443940U (en) | 2013-08-22 | 2013-08-22 | Online chromatographic decompressing sample-injection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454362A (en) * | 2013-08-22 | 2013-12-18 | 中国石油天然气股份有限公司 | Online chromatography decompression sample injection device and online chromatography decompression sample injection method |
| CN105842367A (en) * | 2016-06-16 | 2016-08-10 | 国网辽宁省电力有限公司锦州供电公司 | Nitrogen injection device for transformer oil chromatographic analysis experiment and use method of nitrogen injection device |
-
2013
- 2013-08-22 CN CN201320515876.0U patent/CN203443940U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454362A (en) * | 2013-08-22 | 2013-12-18 | 中国石油天然气股份有限公司 | Online chromatography decompression sample injection device and online chromatography decompression sample injection method |
| CN105842367A (en) * | 2016-06-16 | 2016-08-10 | 国网辽宁省电力有限公司锦州供电公司 | Nitrogen injection device for transformer oil chromatographic analysis experiment and use method of nitrogen injection device |
| CN105842367B (en) * | 2016-06-16 | 2017-06-27 | 国网辽宁省电力有限公司锦州供电公司 | Chromatographic Analysis of Transformer oil experiment nitrogen injections device and its application method |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20210822 |