NL2030062B1 - Experimental system for studying generation of hydrogen sulfide by thermochemical reduction reaction of sulfate in thermal recovery of heavy oil - Google Patents
Experimental system for studying generation of hydrogen sulfide by thermochemical reduction reaction of sulfate in thermal recovery of heavy oil Download PDFInfo
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- NL2030062B1 NL2030062B1 NL2030062A NL2030062A NL2030062B1 NL 2030062 B1 NL2030062 B1 NL 2030062B1 NL 2030062 A NL2030062 A NL 2030062A NL 2030062 A NL2030062 A NL 2030062A NL 2030062 B1 NL2030062 B1 NL 2030062B1
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- sulfate
- hydrogen sulfide
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- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 title claims abstract description 33
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 title claims abstract description 33
- 229910000037 hydrogen sulfide Inorganic materials 0.000 title claims abstract description 33
- 238000006722 reduction reaction Methods 0.000 title claims abstract description 18
- 239000000295 fuel oil Substances 0.000 title claims abstract description 17
- 238000011084 recovery Methods 0.000 title claims abstract description 17
- 239000007789 gas Substances 0.000 claims abstract description 79
- 238000006243 chemical reaction Methods 0.000 claims abstract description 74
- 238000010438 heat treatment Methods 0.000 claims abstract description 26
- 238000004458 analytical method Methods 0.000 claims abstract description 19
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 238000002474 experimental method Methods 0.000 claims abstract description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 5
- 239000011707 mineral Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 11
- 229910052717 sulfur Inorganic materials 0.000 claims description 11
- 239000011593 sulfur Substances 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 238000011049 filling Methods 0.000 claims description 3
- 239000002274 desiccant Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000010779 crude oil Substances 0.000 claims 2
- 239000003208 petroleum Substances 0.000 abstract description 16
- 239000010453 quartz Substances 0.000 abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 11
- 238000009413 insulation Methods 0.000 abstract description 7
- 239000007795 chemical reaction product Substances 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000007790 solid phase Substances 0.000 description 4
- 239000012265 solid product Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000012153 distilled water Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012263 liquid product Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 238000010795 Steam Flooding Methods 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfate Natural products OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000001994 activation Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000036647 reaction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000019086 sulfide ion homeostasis Effects 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 125000000101 thioether group Chemical group 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2226—Sampling from a closed space, e.g. food package, head space
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/88—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
- G01N33/0032—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array using two or more different physical functioning modes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0044—Sulphides, e.g. H2S
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2226—Sampling from a closed space, e.g. food package, head space
- G01N2001/2235—Sampling from a closed space, e.g. food package, head space over a melt, e.g. furnace
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/88—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86
- G01N2030/8809—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86 analysis specially adapted for the sample
- G01N2030/884—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86 analysis specially adapted for the sample organic compounds
- G01N2030/8854—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86 analysis specially adapted for the sample organic compounds involving hydrocarbons
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
- G01N33/0014—Sample conditioning by eliminating a gas
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- Life Sciences & Earth Sciences (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
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- Combustion & Propulsion (AREA)
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- Food Science & Technology (AREA)
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- Biomedical Technology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention discloses a system for studying generation of hydrogen sulfide by the thermochemical reduction reaction of sulfate in the thermal recovery of heavy oil, which is an experimental system for simulating the reaction of crude petroleum and sulfate in reservoir minerals to generate hydrogen sulfide. The experimental system consists of an experimental reaction generation system, a temperature control system, a gas detection and analysis system, a gas collection system, and a reaction product processing system. The experiment generation system comprises components such as a heating furnace, a reaction kettle, a quartz tube, a pressure measuring element, a pressure sensor, a heat insulation sleeve, and a valve; the temperature control system comprises components such as a heating furnace, a thermocouple, a relay, a power supply, a signal converter, and a computer; the gas detection and analysis system comprises a valve, a gas dryer, a gas chromatograph, and a mass spectrometer.
Description
P782/NLpd
EXPERIMENTAL SYSTEM FOR STUDYING GENERATION OF HYDROGEN SULFIDE BY
THERMOCHEMICAL REDUCTION REACTION OF SULFATE IN THERMAL RECOVERY
OF HEAVY OIL
The present invention relates to an experimental study sys- tem, in particular to the exploration of hydrogen sulfide genera- tion mechanism, influence factor, and TSR dynamics study in the thermal recovery of heavy oil, belonging to the field of oil field safety.
With the declining global petroleum resources, countries are paying more and more attention to the exploitation of heavy oil resources. As one of the important methods of heavy oil recovery, thermal oil recovery can improve the reservoir temperature, reduce and improve the mobility of heavy oil by injecting hot fluid into the reservoir, so as to effectively recover heavy oil.
At present, when high-temperature steam is injected into the formation by steam huff and puff or steam flooding that is used as the main way of thermal oil recovery, on the one hand, a thermo- physical change of heating crude petroleum to reduce the viscosity of the crude petroleum occurs; on the other hand, a series of com- plex chemical reactions occur among crude petroleum, formation wa- ter, and formation minerals, resulting in acidic gases such as CO2 and H2S. Wherein, H2S is a highly toxic and harmful gas, which can rapidly cause death when the concentration of hydrogen sulfide in the environment reaches 1.0%. On the other hand, wet H2S has a strong chemical corrosion effect, which causes corrosion damage to related equipment in oil and gas production such as drilling tools, oil pipes, and gathering pipelines, thus affecting the safe production of oil and gas fields. Therefore, the generation and prevention of H2S have attracted much attention in the development of oil and gas fields.
Hydrogen sulfide is a harmful component in natural gas, which is formed due to many possible reasons, but most scholars current- ly believe that the main sources of hydrogen sulfide in oil and gas reservoirs are as follows: firstly is bacterial sulfate reduc- tion (BSR) of sulfide, secondly is thermal decomposition of sul- fide (TDS), and thirdly is thermochemical sulfate reduction (TSR) of sulfide. The toxicity of hydrogen sulfide to microorganisms and the amount of sulfur-containing compounds in rocks determine that the concentration of hydrogen sulfide formed by biological action and thermal cracking of sulfur-containing compounds generally does not exceed 3%-5%, so that the high content of hydrogen sulfide in natural gas (H25>5%) is currently generally considered to be the cause of sulfate thermochemical reduction.
As it is not practical to study the production of hydrogen sulfide from TSR in oil field, the geological environment can only be simulated in a laboratory; the thermal simulation experiment is carried out by using crude petroleum and monomer hydrocarbon gas and sulfate produced on-site, and the process of H2S formation from TSR is explored by advanced test and analysis means. The pre- sent invention provides a set of experimental systems for simulat- ing thermochemical reduction reactions of sulfate in a laboratory and provides a feasible experimental scheme for studying the pro- cess of generating H2S from TSR and TSR kinetic study.
The present invention provides an experimental system for studying the generation of hydrogen sulfide by the thermochemical reduction reaction of sulfate in the thermal recovery of heavy oil, which realizes the reaction between crude petroleum and sul- fate, explores the reaction process, and studies the TSR kinetics.
The present invention provides an experimental system for studying the generation of hydrogen sulfide by the thermochemical reduction reaction of sulfate in the thermal recovery of heavy oil, which consists of an experimental reaction generation system, a temperature control system, a gas detection and analysis system, a gas collection system, and a reaction product processing system.
The experiment generation system comprises components such as a heating furnace, a reaction kettle, a quartz tube, a pressure measuring element, a pressure sensor, a heat insulation sleeve, and a valve; the temperature control system comprises components such as a heating furnace, a thermocouple, a relay, a power sup- ply, a signal converter, and a computer; the gas detection and analysis system comprises a valve, a gas dryer, a gas chromato- graph, and a mass spectrometer; the gas collection system compris- es components such as a valve, a precision electronic gas volume flowmeter, and a gas collection bag; the reaction product pro- cessing system comprises components such as a drying box, a cen- trifuge, and a solid phase extractor.
The present invention provides an experimental system for studying the generation of hydrogen sulfide by the thermochemical reduction reaction of sulfate in the thermal recovery of heavy oil, which is characterized in that: an experimental reaction gen- eration system simulates the thermochemical reaction of crude pe- troleum and sulfate in reservoir minerals, a pressure required by the experiment is realized by filling high-pressure nitrogen into a reaction kettle through a high-pressure nitrogen bottle, a tem- perature required by the experiment is controlled by a temperature control system, a heating mode and a final temperature of a heat- ing furnace are set by a computer, and a reaction kettle is heated to a set temperature by the heating furnace; a heat insulation sleeve is added to reduce the heat loss of the reaction kettle in the heating process as the area of the reaction kettle exposed to the air is not negligible compared with the heating area.
The present invention provides an experimental system for studying the generation of hydrogen sulfide by the thermochemical reduction reaction of sulfate in the thermal recovery of heavy oil, which is characterized in that: the gas detection and analy- sis system has the functions of drying, component analysis, and isotope detection analysis on the gas generated by the reaction; since the necessary condition for the reaction of the crude petro- leum and the sulfate is the existence of water, the reaction ket- tle is cooled to the normal temperature after the reaction, cer- tain water vapor is inevitably existed in the gas in the reaction kettle, so that the generated gas needs to be dried in order to prevent the water vapor from entering the gas chromatograph, and the drying agent is made of inert materials and does not chemical- ly react with the gas; the component of the generated gas is ana- lyzed by a gas chromatograph to quantitatively detect the genera- tion amount of H23; if the sulfur element in the sulfate is sub- jected to isotope calibration before the reaction, the destination of sulfur can be detected by a mass spectrometer to further study the reaction process; The gas generated after the reaction is col- lected by the gas collection system and the volume is measured, and the collected gas can be further tested and analyzed.
The present invention provides an experimental system for studying the generation of hydrogen sulfide by the thermochemical reduction reaction of sulfate in the thermal recovery of heavy oil, which is characterized in that: residual samples in a quartz tube after reaction is processed and detected and analyzed using a reaction product processing system, various substances in solid and liquid products are separated according to properties through a centrifugal machine and a solid phase extractor, and the sepa- rated substances are subjected to component analysis by adopting an advanced test and analysis technology to obtain a product after
TSR reaction.
The present invention provides an experimental system for studying the generation of hydrogen sulfide by the thermochemical reduction reaction of sulfate in the thermal recovery of heavy 0il, which is characterized in that: the temperature is raised to the set temperature by setting a temperature control system in a heating mode with a temperature rise rate. After the heating pro- cess 1s finished, the high-pressure reaction kettle is cooled to room temperature, gas in the reaction kettle is collected by using a gas collection bag, the reaction kettle cover is opened, a quartz tube containing solid and liquid products is taken out, an oil-water mixed solution in the reaction kettle is drawn out by using a pipette, the reaction kettle is washed by using distilled water for multiple times, oil-water separation is carried out on the oil-water two-phase mixed solution by using a micro separating funnel, and the quartz tube containing the solid products, the separated aqueous solution, and the washing solution is trans- ferred into a crucible, the mixture is dried in a drying box to remove surface moisture, and calcined in a muffle furnace at high temperature to constant weight. The solid product after high- temperature ignition is accurately weighed by using an electronic balance, the mass difference is converted into the molar conver- 5 sion rate of the reaction, and then the reaction apparent activa- tion energy and apparent frequency factor are determined by com- bining a reaction kinetic equation and an Arrhenius formula.
FIG. 1 shows a schematic diagram of a partial experimental system for studying the generation of hydrogen sulfide by the thermochemical reduction reaction of sulfate in the thermal recov- ery of heavy oil; The names of the components are as follows : l-Heating furnace, 2-High-temperature high-pressure reaction kettle, 3-Quartz tube, 4-Thermocouple, 5-Relay, 6-Power supply, 7-
Signal converter, 8-Computer, 9-Pressure measuring element, 10-
Pressure sensor, 1l1-Thermal insulation sleeve, 12-Valve 1, 13-Gas dryer, l4-Valve 2, 15-Gas chromatograph, 16-Mass spectrometer, 17-
Precision electronic gas volume flowmeter, 18-Valve 3, 19-Gas col- lection bag; Experimental reaction generation system-001, Tempera- ture control system-002, Gas detection and analysis system 003,
Gas collection system-004.
Wherein, the experimental reaction generation system 001 is composed of a heating furnace (1), a high-temperature high- pressure reaction kettle (2), a quartz tube (3), a pressure meas- uring element (9), a pressure sensor (10), a heat insulation sleeve (11), and a valve 1 (12); the temperature control system 002 is composed of a heating furnace (1), a thermocouple (4), a relay (5), a power supply (6), a signal converter (7), and a com- puter (8); the gas detection and analysis system 003 is composed of a gas dryer (13), a valve 2 (14), a gas chromatograph (15), and a mass spectrometer (16); the gas collection system 004 is com- posed of a precision electronic gas volume flowmeter (17), valve 3 (18), and a gas collection bag (19).
FIG. 2 shows a shunt schematic diagram of the reaction ket- tle; the names of channels are as follows: 01-Temperature measurement channel, 02-Pressure measurement channel, 03-Gas path channel.
The present invention is described in detail below with ref- erence to the accompanying drawing.
FIG. 1 shows a partial experimental system studying the gen- eration of hydrogen sulfide by the thermochemical reduction reac- tion of sulfate in the thermal recovery of heavy oil provided by the present invention, which consists of an experimental reaction generation system, a gas detection and analysis system, and a gas collection system. The experimental reaction generation system 001 is composed of a heating furnace, a high-temperature high-pressure reaction kettle, a quartz tube, a pressure measuring element, a pressure sensor, a heat insulation sleeve, and a valve 1; the tem- perature control system 002 is composed of a heating furnace, a thermocouple, a relay, a power supply, a signal converter, and a computer; the gas detection and analysis system 003 is composed of a gas dryer, a valve 2, a gas chromatograph, and a mass spectrome- ter; the gas collection system 004 is composed of a precision electronic gas volume flowmeter, valve 3, and a gas collection bag.
The main equipment of the reaction product processing system includes a drying box, a centrifuge, and a solid phase extractor.
The specific process flow comprises the following steps: firstly, putting a proper amount of crude petroleum, sulfate, and distilled water into a quartz tube, putting the quartz tube into a high-temperature high-pressure reaction kettle, screwing the reac- tion kettle, vacuumizing the reaction kettle, filling high- pressure nitrogen and providing high pressure required by the re- action, putting the reaction kettle into a heating furnace after airtightness detection, installing a heat insulation sleeve, set- ting the temperature required by the reaction through a tempera- ture control system, and monitoring the pressure and temperature in the reaction kettle through a temperature and pressure sensor, wherein the valve 1 is always closed during heating. After the re- action is carried out for a certain time, the heating system is closed, the reaction kettle is cooled to room temperature, the valve 1 is opened, gas in the kettle enters a gas detection and analysis system, water vapor in the gas is removed through a gas dryer, the valve 2 is opened, the gas enters a gas chromatograph, components in the gas are detected and analyzed, the gas enters a mass spectrometer, and a path of sulfur in the reaction is ob- tained by detecting and analyzing sulfur isotope. The gas then en- ters the gas collection system, and when the gas enters the gas collection bag, the water flow of the reservoir will flow into a graduated cylinder, and finally, the volume of the water in the graduated cylinder can be read to obtain the volume of the reacted gas. The quartz tube is taken out, the residual liquid in the re- action kettle is extracted and washed with distilled water repeat- edly to obtain a reacted liquid, the reacted liquid product is separated through equipment such as a centrifuge and a solid phase extractor, the components of each separated product is obtained through a modern detection and analysis technology, and the reac- tion process of crude petroleum and sulfate is analyzed according to the obtained data. After the heating mode is changed, the mass- es of the reactants before and after are measured, combined with the kinetic equation and the reaction rate equation, the relevant kinetic parameters of the reaction can be obtained.
The technology of the present invention can realize the fol- lowing effects: 1) This experimental system can simulate the thermochemical reduction reaction between crude petroleum in oil reservoir and sulfate in minerals, and can also simulate the reaction process between reservoir gas and sulfate to obtain a general reaction process to produce hydrogen sulfide. 2) In this experimental system, considering that crude petro- leum may also contain sulfur, the sulfur in sulfate can be labeled with an isotope, and the source of sulfur in hydrogen sulfide can be determined by a mass spectrometer. 3) Due to the presence of water in the reaction of this ex- perimental system, it cannot be ruled out whether there is hydro- gen sulfide generated in the hydrothermal cracking of crude petro- leum and water. Therefore, a comparison test can be carried out, namely a group of experiments of crude petroleum + water and a group of experiments of crude petroleum + water + sulfate, and the difference of the hydrogen sulfide content obtained by the two groups of experiments is the H2S generated by the TSR reaction. 4) This experimental system can be used for measuring the components of the product after the TSR reaction, so that the chemical process of the TSR reaction can be provided, and an ap- proximate reaction chemical equation can be provided. 5) This experimental system can carry out theoretical re- search on TSR reaction kinetics, and obtain relevant kinetic pa- rameters of crude petroleum and sulfate under different reaction conditions,
Claims (2)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2030062A NL2030062B1 (en) | 2021-12-07 | 2021-12-07 | Experimental system for studying generation of hydrogen sulfide by thermochemical reduction reaction of sulfate in thermal recovery of heavy oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2030062A NL2030062B1 (en) | 2021-12-07 | 2021-12-07 | Experimental system for studying generation of hydrogen sulfide by thermochemical reduction reaction of sulfate in thermal recovery of heavy oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL2030062B1 true NL2030062B1 (en) | 2023-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL2030062A NL2030062B1 (en) | 2021-12-07 | 2021-12-07 | Experimental system for studying generation of hydrogen sulfide by thermochemical reduction reaction of sulfate in thermal recovery of heavy oil |
Country Status (1)
| Country | Link |
|---|---|
| NL (1) | NL2030062B1 (en) |
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2021
- 2021-12-07 NL NL2030062A patent/NL2030062B1/en active
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