CN105445142A - Movable natural gas hydrate evaluation apparatus - Google Patents
Movable natural gas hydrate evaluation apparatus Download PDFInfo
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- CN105445142A CN105445142A CN201410442957.1A CN201410442957A CN105445142A CN 105445142 A CN105445142 A CN 105445142A CN 201410442957 A CN201410442957 A CN 201410442957A CN 105445142 A CN105445142 A CN 105445142A
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Abstract
The invention discloses a movable natural gas hydrate evaluation apparatus. The apparatus comprises a temperature field device, a natural gas injection pipeline, a natural gas outflow pipeline and a component water injection pipeline; the temperature field device comprises a temperature field tank and a refrigerating unit; an internal coil pipe is arranged in the temperature field tank; the temperature field tank is respectively connected with the refrigerating unit and an acquisition processor; the sidewall of the temperature field tank is provided with a visual window; the natural gas injection pipeline is connected with the internal coil pipe; the natural gas outflow pipeline is connected with the internal coil pipe; and the water injection pipeline is connected with the natural gas injection pipeline. The movable natural gas hydrate evaluation apparatus can be used to evaluate and research hydrate formation conditions and additives in the exploitation field of natural gas, and has the advantages of convenient transportation, convenient operation and strong applicability.
Description
Technical field
The present invention relates to a kind of mobile natural gas hydrate evaluating apparatus, belong to petroleum gas field.
Background technology
Since the nineties in 20th century, the progressively intensification be familiar with gas hydrate along with people, gas hydrate, as a kind of grand strategy resource and potential Geological Environment Influence factor, have carried out deeply comprehensively research in global scope.Certainly, simulation experiment study under laboratory scale is a wherein important ring, the research means of current hydrate presents interdiscipline, multi-disciplinary application characteristic, a large amount of innovative techniques and means are applied to the research of hydrate, and its approach mainly contains three classes: directly apply in in-situ testing device; Adopt modern test technology research hydrate sample; Transformation testing tool makes it the in-situ test adapting to hydrate.
Gas hydrate are white crystalline solid, under uniform temperature, pressure condition, hydrocarbon molecule in rock gas is combined with free water wherein and is formed, and wherein hydrone forms a kind of crystal lattice body with large and small hole by hydrogen bond, and these holes are by the filling of little gas molecule institute.The most important condition forming hydrate is moisture in rock gas, and is in hypersaturated state, even has liquid free water to exist; Next has the pressure of certain condition and the temperature lower than gas hydrate synthesis.Under above-mentioned two kinds of conditions, in oil, natural gas extraction, processing and course of conveying, in case of pressure surge, temperature decline, throttling or air flow direction sudden change may form Hydrate Plugging soon.Time serious, some hydrate can block pit shaft, pipeline, valve and equipment, thus the normal operation affecting gas extraction, collect defeated and process, this endangers very large to production of hydrocarbons and accumulating.
At present, hydrate inhibitor technology only carried out experiment in laboratory, did not have field experiment experience.
Natural Gas In China hydrate stock number is huge, and therefore Investigation On The Hydrate Formation Conditions and adjuvant evaluation and test, research are carried out in scene, the natural gas extraction preventing from hydrate from generating causing, collects defeated and the harm of production of hydrocarbons and accumulating seems particularly necessity.
Summary of the invention
The object of this invention is to provide a kind of mobile natural gas hydrate evaluating apparatus, can carry out Investigation On The Hydrate Formation Conditions and adjuvant evaluation and test at natural gas extraction scene, study, be convenient to transport, easy to operate, applicability is strong.
Mobile natural gas hydrate evaluating apparatus provided by the present invention, comprises warm field device, rock gas filling line, rock gas outflow lines and component water filling line;
Described temperature field device comprises warm field tank and refrigeration unit; Inner coil pipe is provided with in the tank of described temperature field; Described temperature field tank is connected with Acquisition Processor with described refrigeration unit respectively; The sidewall of described temperature field tank is provided with visual windows;
Described rock gas filling line is connected with described inner coil pipe;
Described rock gas outflow lines is connected with described inner coil pipe;
Described component water filling line is connected with described rock gas filling line.
In described mobile natural gas hydrate evaluating apparatus, described evaluating apparatus also comprises adjuvant filling line, described adjuvant filling line is connected with described rock gas filling line, adds required adjuvant by described adjuvant filling line in evaluating apparatus.
Described adjuvant filling line is provided with adjuvant injection pump and adjuvant non-return valve.
In described mobile natural gas hydrate evaluating apparatus, described evaluating apparatus also comprises circulation line;
Described circulation line is connected with described rock gas outflow lines with described rock gas filling line, described circulation line is provided with ebullator and filtrator, and the nearly described rock gas outflow lines end of described filtrator is arranged, when experiment starts, open described ebullator, thus ensure that laboratory sample fully mixes with the adjuvant of injection.
In described mobile natural gas hydrate evaluating apparatus, described evaluating apparatus also comprises differential pressure measurement pipeline;
Described differential pressure measurement pipeline is connected with described rock gas outflow lines with described rock gas filling line, described differential pressure measurement pipeline is provided with pneumatic valve and differential pressure pickup, and the nearly described rock gas outflow lines end of described differential pressure pickup is arranged, can the change of differential pressure in real-time monitored pipeline by described differential pressure pick-up, thus judge hydrate generating state.。
In described mobile natural gas hydrate evaluating apparatus, from the tank end of described temperature field, described rock gas filling line is provided with successively inlet temperature sensor, inlet pressure table, inlet pressure transducer, inlet flow rate meter, entrance reduction valve and entrance security valve, to carry out monitor and forecast to the temperature, pressure, flow etc. of described rock gas filling line.
In described mobile natural gas hydrate evaluating apparatus, from the tank end of described temperature field, described rock gas outflow lines is provided with outlet temperature sensor, delivery gauge and counterbalance valve successively, to monitor the temperature and pressure of described rock gas outflow lines.
In described mobile natural gas hydrate evaluating apparatus, described component water filling line is provided with component water injection pump and component Water Check Valve, to control the injection of component water.
In described mobile natural gas hydrate evaluating apparatus, described rock gas outflow lines is provided with visual windows, can generate situation by hydrate in real-time monitored pipeline.
In described mobile natural gas hydrate evaluating apparatus, described rock gas filling line, described rock gas outflow lines, described component water filling line, described adjuvant filling line and described circulation line are equipped with ball valve, to control the keying of each pipeline.
Mobile natural gas hydrate evaluating apparatus of the present invention, can carry out Investigation On The Hydrate Formation Conditions and adjuvant evaluation and test, study at natural gas extraction scene; In the present invention, the independence of the filling line of adjuvant and component water is arranged, and avoids the mixing in advance between adjuvant and water, thus improves precision and the accuracy of experiment; In the present invention, the setting of circulation line adds the utilization factor of rock gas; In the present invention, differential pressure measurement pipeline can judge and judge the inhibition etc. of the generation of Water In The Experiment compound and adjuvant accurately.In addition, mobile natural gas hydrate evaluating apparatus of the present invention is convenient to transport, and easy to operate, applicability is strong.
Accompanying drawing explanation
Fig. 1 is the structural representation of mobile natural gas hydrate evaluating apparatus of the present invention.
In figure, each mark is as follows:
1 warm field device, 101 refrigeration unit, a 102 temperature tank, 103 stirrers, form in the middle part of in the of 104, 105 Acquisition Processors, 2 rock gas filling lines, 201 inlet temperature sensors, 202 inlet pressure tables, 203 inlet pressure transducers, 204 inlet flow rate meters, 205 entrance reduction valve, 206 entrance security valves, 3 rock gas outflow lines, 301 outlet temperature sensors, 302 delivery gauges, 303 outlet forms, 304 counterbalance valves, 4 component water filling lines, 401 component water injection pumps, 402 component Water Check Valves, 5 adjuvant filling lines, 501 adjuvant injection pumps, 502 adjuvant non-return valve, 6 circulation lines, 601 ebullators, 602 filtrators, 7 differential pressure measurement pipelines, 701 pneumatic valves, 702 differential pressure pickups.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described, but the present invention is not limited to following examples.
As shown in Figure 1, mobile natural gas hydrate evaluating apparatus of the present invention, comprises warm field device 1, rock gas filling line 2, rock gas outflow lines 3, component water filling line 4, adjuvant filling line 5, circulation line 6 and differential pressure measurement pipeline 7.Wherein, warm field device 1 comprises the warm field tank 102 being provided with inner coil pipe, the refrigeration unit 101 be communicated with warm field tank 102, gos deep into stirrer 103 in warm field tank 102 and Acquisition Processor 105, arranges middle part form 104 in the inner coil pipe of warm field tank 102.The preferred stainless steel of warm field tank 102 in the present invention, and insulating foam layer is set, the stirrer 103 in the present invention preferably axially with radial two-layer hybrid stirrer paddle, the refrigeration unit in the present invention is commercially available refrigeration machine.
Rock gas filling line 2 is connected with the inside coil pipe of warm field tank 102, from from tank 102 end of warm field, rock gas filling line 2 is disposed with inlet temperature sensor 201, inlet pressure table 202, inlet pressure transducer 203, inlet flow rate meter 204, entrance reduction valve 205 and entrance security valve 206, for monitoring temperature, the pressure and flow etc. of rock gas filling line 2.
Rock gas outflow lines 3 is connected with the inside coil pipe of warm field tank 102, from from tank 102 end of warm field, rock gas outflow lines 3 is disposed with outlet temperature sensor 301, delivery gauge 302 and counterbalance valve 304.
Component water filling line 4 is connected with rock gas filling line 2, for component water of annotating in circulation line, it sets gradually component water injection pump 401 and component Water Check Valve 402.Adjuvant filling line 5 is also connected with rock gas filling line 2, for adding injecting additive in circulation line, it is disposed with adjuvant injection pump 501 and adjuvant non-return valve 502.Component water injection pump 401 in the present invention and adjuvant injection pump 501 preferably explosion-proof type plunger type high-pressure volume pump.
Circulation line 6 is connected with rock gas outflow lines 3 with rock gas filling line 2, for gas-liquid cycle in pipeline, ensure the Homogeneous phase mixing of gas-liquid, this circulation line 6 is arranged ebullator 601 and filtrator 602, the nearly rock gas outflow lines 3 of its middle filtrator 602 is arranged.Ebullator 601 in the present invention is preferably explosion-proof type gas-liquid delivery two-screw pump.
Differential pressure measurement system 7 is connected with rock gas outflow lines 3, this differential pressure measurement system 7 is arranged pneumatic valve 701 and differential pressure pickup 702, wherein the nearly rock gas outflow lines 3 of differential pressure pickup 702 is arranged, and outlet form 303 is set in rock gas outflow lines 3, generates situation for hydrate in real-time monitored pipeline.
In the present invention, in warm field device 1, rock gas filling line 2, rock gas outflow lines 3, component water filling line 4, adjuvant filling line 5, circulation line 6 and differential pressure measurement pipeline 7, control ball valve 11 is all set.
Mobile natural gas hydrate evaluating apparatus of the present invention can be carried out Investigation On The Hydrate Formation Conditions and adjuvant evaluation and test, study at natural gas extraction scene, concrete research step is as follows:
When adopting mobile natural gas hydrate evaluating apparatus, first in warm field tank 102, inject rock gas, water and adjuvant by rock gas filling line 2, component water filling line 4 and adjuvant filling line 5 respectively, and control the temperature in warm field tank 102 by warm field device 1.Carrying out in programmed cooling process, observed the reactiveness of gas and water in the coil pipe in warm field tank 102 by middle part form 104, the differential pressure curve of bonding apparatus record, thus determine the temperature that hydrate generates:
1, when there being a large amount of hydrate to generate, differential pressure curve has and sharp rises, and shows have hydrate to generate in pipeline and assemble, and gas-liquid cycle ability declines, and generates situation by visual window observation water compound simultaneously.
2, when there being a small amount of hydrate to generate, going up by a small margin appears in differential pressure curve, and with pressure surge, show that in pipeline, hydrate generation quantity is few, be not gathered into block, hydrate, with gas, the fluctuation of liquid circulation build-up of pressure, generates situation by visual window observation water compound simultaneously.
Under hydrate generates temperature, the kinetic inhibitor under variable concentrations is injected in movable type water compound evaluating apparatus coil pipe, observe hydrate and whether generate and the rise time, thus evaluate kinetic inhibitor effect.And the filling line of adjuvant and component water avoids the mixing in advance of the two, thus improves experimental precision and accuracy.
In the present invention, circulation line adds the utilization factor of rock gas, and differential pressure measurement pipeline can judge to judge the generation of Water In The Experiment compound and adjuvant inhibition etc. accurately, and transport is convenient in the present invention, and easy to operate, applicability is strong.
Claims (9)
1. a mobile natural gas hydrate evaluating apparatus, is characterized in that: it comprises warm field device, rock gas filling line, rock gas outflow lines and component water filling line;
Described temperature field device comprises warm field tank and refrigeration unit; Inner coil pipe is provided with in the tank of described temperature field; Described temperature field tank is connected with Acquisition Processor with described refrigeration unit respectively; The sidewall of described temperature field tank is provided with visual windows;
Described rock gas filling line is connected with described inner coil pipe;
Described rock gas outflow lines is connected with described inner coil pipe;
Described component water filling line is connected with described rock gas filling line.
2. evaluating apparatus according to claim 1, is characterized in that: described evaluating apparatus also comprises adjuvant filling line, and described adjuvant filling line is connected with described rock gas filling line;
Described adjuvant filling line is provided with adjuvant injection pump and adjuvant non-return valve.
3. evaluating apparatus according to claim 1 and 2, is characterized in that: described evaluating apparatus also comprises circulation line;
Described circulation line is connected with described rock gas outflow lines with described rock gas filling line, and described circulation line is provided with ebullator and filtrator, and the nearly described rock gas outflow lines end of described filtrator is arranged.
4. the evaluating apparatus according to any one of claim 1-3, is characterized in that: described evaluating apparatus also comprises differential pressure measurement pipeline;
Described differential pressure measurement pipeline is connected with described rock gas outflow lines with described rock gas filling line, and described differential pressure measurement pipeline is provided with pneumatic valve and differential pressure pickup, and the nearly described rock gas outflow lines end of described differential pressure pickup is arranged.
5. the evaluating apparatus according to any one of claim 1-4, it is characterized in that: from the tank end of described temperature field, described rock gas filling line is provided with successively inlet temperature sensor, inlet pressure table, inlet pressure transducer, inlet flow rate meter, entrance reduction valve and entrance security valve.
6. the evaluating apparatus according to any one of claim 1-5, is characterized in that: from the tank end of described temperature field, described rock gas outflow lines is provided with outlet temperature sensor, delivery gauge and counterbalance valve successively.
7. the evaluating apparatus according to any one of claim 1-6, is characterized in that: described component water filling line is provided with component water injection pump and component Water Check Valve.
8. the evaluating apparatus according to any one of claim 1-7, is characterized in that: described rock gas outflow lines is provided with visual windows.
9. evaluating apparatus according to claim 8, is characterized in that: described rock gas filling line, described rock gas outflow lines, described component water filling line, described adjuvant filling line and described circulation line are equipped with ball valve.
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| CN201410442957.1A CN105445142B (en) | 2014-09-02 | 2014-09-02 | Mobile natural gas hydrate evaluating apparatus |
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| CN201410442957.1A CN105445142B (en) | 2014-09-02 | 2014-09-02 | Mobile natural gas hydrate evaluating apparatus |
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| CN105445142A true CN105445142A (en) | 2016-03-30 |
| CN105445142B CN105445142B (en) | 2019-03-26 |
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| CN102507871A (en) * | 2011-11-02 | 2012-06-20 | 西南石油大学 | Visual dynamic simulating device for deposition in gas hydrate pipeline |
| CN203117149U (en) * | 2013-01-14 | 2013-08-07 | 广东石油化工学院 | Device for simulating evaluation of natural gas hydrate inhibitor by using tetrahydrofuran |
| CN103645285A (en) * | 2013-12-17 | 2014-03-19 | 中国海洋石油总公司 | Visualized natural gas hydrate simulation test device and method |
| CN204228563U (en) * | 2014-09-02 | 2015-03-25 | 中国海洋石油总公司 | A kind of mobile natural gas hydrate evaluating apparatus |
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2014
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| CN101055276A (en) * | 2007-02-14 | 2007-10-17 | 中国科学院广州能源研究所 | Natural gas hydrate phase balance emulation experiment device |
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| CN105445142B (en) | 2019-03-26 |
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Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC RESEARCH INSTITUTE Co.,Ltd. Patentee after: CHINA NATIONAL OFFSHORE OIL Corp. Co-patentee after: BEIJING YONGRUIDA TECHNOLOGY Co.,Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC RESEARCH INSTITUTE Co.,Ltd. Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. Co-patentee before: BEIJING YONGRUIDA TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20200331 Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC RESEARCH INSTITUTE Co.,Ltd. Patentee after: CHINA NATIONAL OFFSHORE OIL Corp. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC RESEARCH INSTITUTE Co.,Ltd. Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. Co-patentee before: BEIJING YONGRUIDA TECHNOLOGY Co.,Ltd. |