CN211718025U - High-temperature high-pressure fluid solid phase deposition simulation device - Google Patents
High-temperature high-pressure fluid solid phase deposition simulation device Download PDFInfo
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- CN211718025U CN211718025U CN202020177857.1U CN202020177857U CN211718025U CN 211718025 U CN211718025 U CN 211718025U CN 202020177857 U CN202020177857 U CN 202020177857U CN 211718025 U CN211718025 U CN 211718025U
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Abstract
The utility model provides a high-temperature high-pressure fluid solid phase deposition simulation device, which comprises a sample preparation injection system, a sample preparation injection system and a sample preparation injection system, wherein the sample preparation injection system is used for preparing and outputting a fluid sample; the solid phase deposition system is communicated with the sample preparation injection system and is used for carrying out solid phase deposition on the fluid sample output by the sample preparation injection system; the back pressure system is respectively communicated with the sample preparation injection system and the solid phase deposition system and is used for controlling the pressure of the solid phase deposition system; and the sample preparation injection system is used for preparing a fluid sample, the fluid sample is input into the solid phase deposition system, the fluid sample is subjected to solid phase deposition, the pressure of the solid phase deposition system is controlled by the back pressure system, and the solid phase deposition is subjected to measurement detection by adopting a weighing method. The beneficial effects of the utility model are that solve solid phase deposition problem in the oil reservoir exploitation of deep gas reservoir, condensate gas reservoir and gas injection miscible phase flooding, provide scientific research means and prediction evaluation technique, avoid causing reservoir injury to block up and the pit shaft, the oil reservoir exploitation of being convenient for.
Description
Technical Field
The utility model belongs to the technical field of solid phase deposition, especially, relate to a high temperature high pressure fluid solid phase deposition analogue means.
Background
The problem of organic solid phase deposition in oil gas hydrocarbon systems is a necessary research topic in the petroleum and natural gas industry. In the process of oil and gas field exploitation, the problems of formation fluid channel, shaft solid phase deposition and organic solid phase deposition are troubled for a long time, particularly in the exploitation of deep gas reservoir, condensate gas reservoir and gas injection miscible-phase flooding oil reservoir, the research on the asphaltene precipitation in crude oil can be caused by the changes of the temperature and pressure of the crude oil, so that the reservoir damage blockage and the shaft blockage are caused, and no related equipment can predict and solve the problem of solid phase deposition at present, so that the solid phase deposition easily occurs in the process of oil reservoir exploitation, and the exploitation difficulty is large.
Disclosure of Invention
In view of the above problems, the present invention provides a high temperature and high pressure fluid solid phase deposition simulator, which obtains solid phase deposition by changing fluid pressure and temperature in a sample cylinder, and detects the amount of solid phase deposition in fluid by filtering, collecting and weighing.
In order to solve the technical problem, the utility model discloses a technical scheme is: a high-temperature high-pressure fluid solid phase deposition simulation device comprises,
the sample preparation and injection system is used for preparing and outputting the fluid sample;
the solid phase deposition system is communicated with the sample preparation injection system and is used for carrying out solid phase deposition on the fluid sample output by the sample preparation injection system;
the back pressure system is respectively communicated with the sample preparation injection system and the solid phase deposition system and is used for controlling the pressure of the solid phase deposition system;
and the sample preparation injection system is used for preparing a fluid sample, the fluid sample is input into the solid phase deposition system, the fluid sample is subjected to solid phase deposition, the pressure of the solid phase deposition system is controlled by the back pressure system, and the solid phase deposition is subjected to measurement detection by adopting a weighing method.
The sample preparation and injection system comprises a sample preparation device, an output power device and a sample preparation and back pressure device, wherein the output power device, the sample preparation device and the sample preparation and back pressure device are sequentially communicated, a sample preparation device is used for preparing a fluid sample and outputting the fluid sample under the action of the output power device, and the sample preparation and back pressure device keeps the pressure of the sample preparation device constant in the process of outputting the fluid sample.
Specifically, the solid phase deposition system comprises a shaft simulation device, a filtering device, a constant temperature device and a circulating device, wherein,
the shaft simulator is communicated with the filtering device, and is used for filtering the fluid sample in the shaft simulator and depositing solid-phase sediment;
the shaft simulation device and the filtering device are both arranged in the constant temperature device and used for controlling the temperature of the shaft simulation device and the filtering device;
and the circulating device is respectively connected with the shaft simulating device and the filtering device and is used for circulating the fluid sample.
Further, the shaft simulating device comprises a shaft, a stirring device, a high-low temperature condensing device and a visual observing device, wherein,
the stirring device is connected with the shaft and is used for stirring the fluid sample in the shaft;
the high and low temperature condensing device is connected with the shaft and is used for adjusting the temperature of the fluid sample in the shaft;
two ends of the visual observation device are respectively communicated with the shaft, and characteristic observation is carried out on the fluid sample.
Further, visual observation device includes window and observation recorder, and the both ends of window communicate with the pit shaft respectively for fluid sample circulates, observes recorder and locates on the window for carry out data characteristic record, preferred, observes recorder and be the CCD camera to fluid sample.
Specifically, filter equipment's quantity is a plurality of, and a plurality of filter equipment's one end all communicates with the pit shaft, and the other end all communicates with circulating device.
The back pressure system comprises a back pressure power device, a back pressure buffer device and a back pressure device, wherein the back pressure power device is communicated with the back pressure buffer device to control back pressure;
the back pressure buffer device is respectively connected with the back pressure device and the sample preparation injection system and is used for pressure buffering of the back pressure device and the sample preparation injection system;
the back pressure device is connected with the solid phase deposition system and is used for back pressure and pressure regulation.
Furthermore, the high-temperature high-pressure fluid solid phase deposition simulation device further comprises a cleaning system, and two ends of the cleaning system are respectively connected with the sample preparation injection system and used for cleaning the simulation device.
Furthermore, the high-temperature high-pressure fluid solid phase deposition simulation device also comprises a conveying pipeline pressure maintaining system, wherein the conveying pipeline pressure maintaining system is respectively communicated with the sample preparation injection system and the solid phase deposition system and is used for maintaining the pressure of the fluid sample in the flowing process unchanged.
Further, the high-temperature high-pressure fluid solid phase deposition simulation device also comprises a pressure detection system, a temperature detection system and a control system, wherein,
the pressure detection system is respectively arranged on the sample preparation injection system, the solid phase deposition system and the back pressure system and is used for respectively measuring the pressure of the sample preparation injection system, the pressure of the solid phase deposition system and the pressure of the back pressure system;
the temperature detection system is respectively arranged on the sample preparation injection system, the solid phase deposition system and the back pressure system and is used for respectively measuring the temperature of the sample preparation injection system, the temperature of the solid phase deposition system and the temperature of the back pressure system.
The control system is respectively electrically connected with the pressure detection system, the temperature detection system, the sample preparation injection system, the solid phase deposition system, the back pressure system and the cleaning system and controls the actions of the sample preparation injection system, the solid phase deposition system, the back pressure system and the cleaning system.
By adopting the technical scheme, the device has the advantages of compact structure, convenient assembly and disassembly, and a sample preparation injection system, can prepare samples of fluid samples, simulate formation fluid, has a solid phase deposition system, simulate the pressure and temperature change condition in the oil reservoir exploitation process, carry out solid phase deposition, solve the problem of solid phase deposition in the oil reservoir exploitation of deep gas reservoir, condensate gas reservoir and gas injection miscible-phase flooding, provide scientific research means and prediction evaluation technology, avoid causing reservoir damage and blockage and shaft, and facilitate the oil reservoir exploitation.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
In the figure:
1. sample preparation device 2, output power device 3 and water tank
4. Sample preparation back pressure device 5, back pressure power device 6 and back pressure buffer device
7. Back pressure device 8, circulating pump 9, scavenging pump
10. High-pressure window 11, well bore 12 and constant temperature device
13. Filter device 14, pressure sensor 15, and temperature sensor
16. High-pressure gas cylinder 17, high-low temperature condensing device 18 and stirring device
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments.
Fig. 1 shows a schematic structural diagram of an embodiment of the present invention, and the embodiment relates to a high-temperature high-pressure fluid solid phase deposition simulation apparatus, which is used for detecting the amount of solid phase deposits in petroleum and natural gas, obtaining the solid phase deposits by changing the fluid pressure and temperature in a sample cylinder, and detecting the amount of solid phase deposits in fluid by filtering, collecting and weighing, solving the problems of bottom fluid channel and shaft solid phase deposition, and avoiding causing reservoir damage and shaft blockage.
The above-mentioned filtering, collecting and weighing method is that the solid-phase deposit in the fluid is filtered by filter, and after the filtered material is taken out, the dried and weighed so as to obtain the total deposit quantity.
A high-temperature high-pressure fluid solid phase deposition simulation device is shown in figure 1 and comprises:
the sample preparation and injection system is used for preparing and outputting a fluid sample, and the fluid sample is a simulated formation sample;
the solid phase deposition system is communicated with the sample preparation injection system and is used for carrying out solid phase deposition on the fluid sample output by the sample preparation injection system, the fluid sample in the sample preparation injection system is input into the solid phase deposition system, and the solid phase deposition system is circulated and filtered to obtain solid phase deposits;
the back pressure system is respectively communicated with the sample preparation injection system and the solid phase deposition system and is used for controlling the pressure of the solid phase deposition system, controlling the pressure in a connecting pipeline between the solid phase deposition system and the sample preparation injection system, and stabilizing the pressure of the high-temperature high-pressure fluid solid phase deposition device to realize the control according to the stratum experiment conditions and safety;
and (3) matching the fluid sample by a sample matching injection system, inputting the fluid sample into a solid phase deposition system, performing solid phase deposition on the fluid sample, controlling the pressure of the solid phase deposition system by a back pressure system, and performing measurement detection on the solid phase deposit by adopting a weighing method to obtain the total deposit amount.
Specifically, the sample preparation injection system includes a sample preparation device 1, an output power device 2, and a sample preparation back pressure device 74, wherein the output power device 2, the sample preparation device 1, and the sample preparation back pressure device 4 are sequentially communicated, the sample preparation device 1 performs sample preparation of the fluid sample, and outputs the fluid sample under the action of the output power device 2, and the sample preparation back pressure device 4 keeps the pressure of the sample preparation device 1 constant during the process of outputting the fluid sample. The sample preparation device 1 is a tank-shaped structure, which is convenient for the preparation of fluid samples, the fluid samples are simulated formation samples, and the solid phase deposition state of the fluid in the bottom layer is convenient to judge according to the solid phase deposition result of the fluid samples, so the fluid samples are prepared according to the components and the content of the fluid in the bottom layer. The sample dispenser 1 is a pressure-resistant tank-like structure, and the components of the fluid sample are placed in the sample dispenser 1 and disposed. Preferably, the sample injector 1 is a high-pressure piston type sample injector, which is a commercially available product and is selected according to actual requirements, and no specific requirement is made here.
The liquid inlet of the sample matching device 1 is connected with the output power device 2, and the liquid inlet of the sample matching device 1 is communicated with the output power device 2, so that the output power device 2 can provide power for the piston action in the sample matching device 1, and the fluid sample in the sample matching device 1 can be output from the output port of the sample matching device 1. In this embodiment, the output power device 2 is a constant-speed constant-pressure pump, and pumps the obtained water source into the sample preparation device 1 to push the piston to act, so that the piston pushes the fluid sample out of the sample preparation device 1, and the fluid sample is output and enters the conveying pipeline connected to the solid-phase deposition system, and the water source and the fluid sample are respectively located at two sides of the piston and are not mixed, thereby ensuring the characteristics of the fluid sample. Preferably, the output power device 2 is a plunger pump, the plunger pump is provided with a water tank 3, a driving water source is arranged in the water tank 3, two ends of the plunger pump are respectively connected with the sample preparation device 1 and the water tank 3, water and suction water are injected into the sample preparation device 1 by utilizing the working principle of the plunger pump, the piston of the sample preparation device 1 is pushed to act, the fluid sample is output, and the fluid sample is conveyed to the solid phase deposition system. The plunger pump is arranged to ensure that the pressure in the sample dispenser 1 is constant during the sample dispensing process, and the amount of the output fluid sample from the sample dispenser 1 is metered by the plunger pump, so that the amount of the output fluid sample can be metered, and the subsequent calculation of the amount of the solid-phase deposit is facilitated. The plunger pump is a commercially available product, and can be HB500/50 or other types according to actual requirements. The sample preparation device 1 adopts electric heating, and a heat preservation sleeve is arranged outside the sample preparation device 1 to control the temperature in the sample preparation device 1.
In order to further ensure that the pressure of the sample preparation device 1 is constant, a sample preparation back pressure device 4 is arranged at the outlet of the sample preparation device 1, the sample preparation back pressure device 4 is connected and communicated with the sample preparation device 1 through a connecting pipeline, and the other end of the sample preparation back pressure device 4 is connected with a back pressure system, so that the pressure stability of the sample preparation back pressure device 4 is ensured. This join in marriage a kind back pressure device 4 control and join in marriage the pressure of the export of appearance ware 1, guarantee that the rerum natura parameter of the fluid in joining in marriage appearance ware 1 is stable, for withstand voltage temperature resistant piece. This join in marriage a kind back pressure device 4 is the back pressure valve, preferably high accuracy back pressure valve, for the product of selling, selects according to actual demand, does not do the concrete requirement here.
Join in marriage a kind back pressure device 4 and join in marriage the connecting tube between the appearance 1 and be nonrust steel pipe, for withstand voltage heat-resistant pipe, be provided with the pipeline on the outer wall of connecting tube and accompany the heat, for the connecting tube heating, guarantee that the temperature of connecting tube is unanimous with the temperature of joining in marriage appearance 1, avoid fluid sample characteristic to change. The pipeline is a heat tracing band which is a commercial product and is selected according to actual requirements, and no specific requirement is made here.
The solid phase deposition system comprises a shaft simulation device, a filtering device 13, a constant temperature device 12 and a circulating device, wherein the shaft simulation device is communicated with the filtering device 13, filters a fluid sample in the shaft simulation device and deposits solid phase sediments, the shaft simulation device is used for containing the fluid sample, and the characteristics of the fluid are changed by changing the temperature and the pressure of the fluid sample in the model to obtain the solid phase sediments; the shaft simulation device and the filtering device 13 are both arranged in the constant temperature device 12, the temperature of the shaft simulation device and the filtering device 13 is controlled, and the temperature in the shaft simulation device and the filtering device 13 is ensured due to the arrangement of the constant temperature device 12; the circulating device is respectively connected with the shaft simulating device and the filtering device 13, and circulates the fluid sample, so that the fluid sample in the shaft simulating device is filtered for multiple times, multiple parameters are realized, and solid-phase sediment is obtained. The fluid sample from the sample proportioning device 1 enters a shaft simulation device, the temperature and the pressure of the fluid sample in the shaft simulation device are changed, the fluid sample flows out of the shaft simulation device and enters a filtering device 13 for filtering, solid-phase sediment is deposited, the filtered fluid enters a circulating device and enters the shaft simulation device from the circulating device for circulating, circulation and filtering of a plurality of parameters are carried out, solid-phase sediment is obtained, and the solid-phase sediment is subjected to weighing method to detect the quantity value of the solid-phase sediment.
The thermostat 12 is an oven, preferably a thermostat, and is a commercially available product, which is selected according to actual needs, and is not specifically required here.
Specifically, the shaft simulation device comprises a shaft 11, a stirring device 18, a high-low temperature condensing device 17 and a visual observation device, wherein the stirring device 18 is connected with the shaft 11 and is used for stirring a fluid sample in the shaft 11 to ensure the uniformity of the fluid; the high and low temperature condensing device 17 is connected with the shaft 11 and is used for adjusting the temperature of the fluid sample in the shaft 11 and ensuring that the temperature of the fluid sample in the shaft 11 meets the requirement; two ends of the visual observation device are respectively communicated with the shaft 11, and the fluid sample is subjected to characteristic observation to determine the fluid characteristics. The fluid sample flowing out of the sample preparation device 1 enters the shaft 11, the stirring device 18 stirs the fluid sample, the fluid sample flows out of the shaft 11 and enters the filtering device 13, solid phase in the fluid sample is deposited, asphalt and wax are deposited to form sediment, the filtered fluid sample enters the circulating device and enters the shaft 11 from the circulating device, the fluid sample is filtered again, after all parameters are tested, solid phase sediment is obtained, and the total amount of the solid phase sediment is measured.
The shaft 11 is used for simulating the shaft 11 in the oil reservoir exploitation process, is of a cylindrical structure, a stirring device 18 is installed at an inlet of the shaft 11, and the stirring device 18 extends into the shaft 11 to stir a fluid sample in the shaft 11, so that the uniformity of the fluid is ensured. This agitating unit 18 is magnetic stirring device 18, including agitator motor and impeller, agitator motor is connected with impeller, and agitator motor is located the outside of pit shaft 11, and impeller is located the inside of pit shaft 11, for the product of selling, selects according to actual demand, does not do the specific requirement here. In this embodiment, the material of the shaft 11 is stainless steel.
There is high low temperature condensing equipment 17 at the outer wall fixed mounting of pit shaft 11, a fluid sample for in the pit shaft 11 carries out temperature regulation, this high low temperature condensing equipment 17 includes oil bath cover and oil bath groove, the oil bath cover is connected and is communicate with the oil bath groove, the fixed suit of oil bath cover is in the outside of pit shaft 11, the oil bath cover passes through the connecting tube and is connected with the oil bath groove, there is the oil bath medium in the oil bath groove, the oil bath medium circulates in oil bath groove and oil bath cover, the temperature of oil bath medium is controlled by the oil bath groove, the temperature of oil bath groove control oil bath medium, lower the temperature to the fluid sample in pit shaft 11. The oil bath sleeve is made of stainless steel, the oil bath medium is preferably methyl silicone oil, the temperature control is accurate, the temperature control range is 150-minus 20 ℃, and the temperature of a fluid sample in the shaft 11 can be accurately adjusted. The oil bath sleeve and the oil bath groove are both commercially available products, and are selected according to actual requirements, and no specific requirements are made here. All be equipped with the switch on the pipeline that oil bath groove and oil bath cover are connected, control the intercommunication between oil bath groove and the oil bath cover, this switch is two-way valve, preferably high temperature high pressure ball valve, for the product of selling on the market, selects according to actual demand, does not do specific requirements here, and is equipped with the pipeline on this connecting tube and accompanies the heat, and the pipeline that sets up on the connecting tube between above-mentioned sample preparation ware 1 and pit shaft 11 accompanies the heat structure the same, and here is no longer repeated.
Interfaces are arranged on the side walls of two ends of the shaft 11, so that the visual observation device is connected with the shaft 11 through the interfaces, and the flow of the fluid sample in the shaft 11 is convenient. This visual viewing device includes window and observation recorder, and the both ends of window communicate with pit shaft 11 respectively for the circulation of fluid sample, observe recorder and locate on the window, be used for carrying out data characteristic record to fluid sample. The preferred high pressure window 10 that is of this window, and the quantity of high pressure window 10 is a plurality of, select according to actual demand, the both ends of high pressure window 10 pass through the interface connection at connecting tube respectively with 11 both ends of pit shaft, and set up the switch on two connecting tube, make the fluid sample in the pit shaft 11 flow through high pressure window 10 along the connecting tube, and flow back in the pit shaft 11, outside fixed mounting at high pressure window 10 has the observation recorder, carry out the observation of fluid characteristic to the fluid that flows through high pressure window 10, preferably, it is CCD camera to observe the recorder. The switch is an electric ball valve. This high pressure window 10 has the fluid circulation passageway, and keeps away from the one end of being connected with the barrel and has the window that transparent material constitutes, and the CCD camera of being convenient for records, shoots, carries out the observation of fluid characteristic.
The liquid outlet and the filter equipment 13 of barrel are connected, filter equipment 13's quantity is a plurality of, a plurality of filter equipment 13's one end all communicates with pit shaft 11, the other end all communicates with circulating device, that is, a plurality of filter equipment 13 pass through linked switch and are connected with the barrel, a plurality of filter equipment 13's the other end passes through linked switch and is connected with circulation system, this linked switch can three way valve, or other switches, in this embodiment, this filter equipment 13's quantity is two, be connected with barrel and circulating device respectively through three way valve, this three way valve is high temperature high pressure ball valve, for the product of selling on the market, select according to the actual demand, do not do the specific requirement here. This filter equipment 13 is the filter for solid phase deposit filters, has fluid passage, in fluid passage, is equipped with a plurality of filter screens, and the mesh number of a plurality of filter screens is inequality, filters solid phases such as pitch and wax in the fluid sample, and along the direction that the fluid sample flows, the mesh number of filter screen reduces in proper order, is convenient for filter different particle diameter solid phases, and the mesh number of filter screen is selected according to the diameter of the solid phase that needs to filter, does not do the concrete requirement here.
The circulating device is a circulating pump 8 for circulating the fluid, and preferably, in order to adapt to the temperature and the pressure of the fluid sample, the circulating pump 8 is a high-temperature high-pressure circulating pump 8 which is a commercially available product and is selected according to actual requirements. The two ends of the circulating device are connected with the shaft 11 and the filtering device 13 through connecting pipelines, the pipelines on the connecting pipelines are subjected to heat tracing, the structure of the pipeline heat tracing is the same as that of the pipeline arranged on the connecting pipeline between the sample preparation device 1 and the shaft 11, and the description is omitted here.
The back pressure system comprises a back pressure power device 5, a back pressure buffer device 6 and a back pressure device 7, wherein the back pressure power device 5 is communicated with the back pressure buffer device 6 to control the back pressure; the back pressure buffer device 6 is respectively connected with the back pressure device 7 and the sample preparation injection system and is used for pressure buffering of the back pressure device 7 and the sample preparation injection system; the back pressure device 7 is connected with the solid phase deposition system and is used for back pressure and pressure regulation. The back pressure system is used for controlling the pressure of the sample preparation injection system and the solid phase deposition system, the back pressure power device 5 is a back pressure pump and is used for controlling the back pressure, the back pressure pump is a manual back pressure pump and is provided with a water tank and a driving water source, and the driving medium is water; the back pressure buffer device 6 is used for buffering the pressure of the sample preparation back pressure device 4 and the back pressure device 7, so as to ensure the pressure stability of the sample preparation back pressure device 4 and the back pressure device 7, and the back pressure buffer device 6 is a back pressure buffer container; the back pressure device 7 is a back pressure valve, one end of the back pressure valve is communicated with the shaft 11 simulation device, the other end of the back pressure valve is communicated with the water tank, and the back pressure valve is simultaneously connected with the back pressure buffer device 6, so that the action of the back pressure valve is realized, and the constant pressure of the shaft simulation device is ensured; one end of the sample preparation back pressure device 4 is communicated with the sample preparation device 1, the other end of the sample preparation back pressure device is communicated with the shaft simulation device, and meanwhile, the sample preparation back pressure device 4 is connected with the back pressure buffer device 6, so that the pressure of the sample preparation device 1 is ensured to be constant; a switch is arranged on a connecting pipeline between the sample preparation back pressure device 4 and the back pressure buffer device 6, a switch is also arranged on a connecting pipeline between the back pressure device 7 and the back pressure buffer device 6, the switch is preferably an electric ball valve, the opening and closing of the two connecting pipelines are controlled, and the pressure of the sample preparation device 1 and the pressure of the shaft simulation device are further controlled. The arrangement of the two back pressure valves is used for carrying out pressure stabilization control, overload pressure control and high-pressure safety release on the whole fluid solid phase deposition device, and the back pressure is adjusted to realize the control according to the stratum experimental conditions and safety. The pressure of the sample preparation back pressure device 4 and the pressure of the back pressure device 7 are controlled by adjusting the back pressure pump, and further the pressure of the sample preparation device 1 and the shaft simulation device is controlled, so that the pressure of the whole fluid solid phase deposition device is controllable and adjustable.
Further optimization scheme, this high temperature high pressure fluid solid phase deposition analogue means still includes cleaning system, cleaning system's both ends are connected with joining in marriage a kind injection system respectively, be used for wasing this analogue means, this cleaning system includes scavenging pump 9, the one end of scavenging pump 9 is connected with the water tank 3 of plunger pump, provide the drive water source, the other end of scavenging pump 9 is connected with the liquid outlet of joining in marriage kind ware 1, be convenient for go into water pump and join in marriage in kind ware 1, wash to joining in marriage kind ware 1, scavenging pump 9 is connected with water tank 3 and join in marriage kind ware 1 through the connecting line, be equipped with the switch on the connecting line of being connected with joining in marriage kind ware 1, the opening and closing action of control scavenging pump 9, be the two-way valve. The cleaning medium is petroleum ether or alcohol, the cleaning is carried out under normal pressure, and the cleaned medium is collected, treated and recycled. The cleaning pump 9 is a commercial product and is selected according to actual requirements.
Furthermore, the high-temperature high-pressure fluid solid phase deposition simulation device further comprises a conveying pipeline pressure maintaining system, wherein the conveying pipeline pressure maintaining system is respectively communicated with the sample preparation injection system and the solid phase deposition system and is used for maintaining the pressure of the fluid sample unchanged in the flowing process and avoiding the flash evaporation of the fluid sample. The pressure maintaining system of the conveying pipeline comprises a high-pressure gas bottle 16 and a pressurizing device, wherein the high-pressure gas bottle 16 is communicated with a connecting pipeline of a sample preparation device 1 and a shaft simulation device through the connecting pipeline, a high-pressure gas source is provided, gas in the high-pressure gas bottle 16 is conveyed to a pipeline where fluid flows, the process is filled, when a sample in the sample preparation device 1 is conveyed to the pipeline process, along with the increase of the pressure of the process, the high-pressure gas in the pipeline is gradually discharged out of the process under the control of a sample preparation back-pressure device 4 and a back-pressure device 7, so that the problem that the fluid sample output in the sample preparation device 1 is not flashed is solved, the discharge pressure of the high-pressure gas in the process is controlled by the back-pressure device 7, and the. The high-pressure gas bottle 16 is connected with the increasing device and is used for providing high-pressure sleeve gas for the high-pressure gas bottle 16, the high-pressure sleeve gas is composed of a gas booster pump and a pressure regulating system, the pressure regulating system is a pressure regulating valve, gas can be pressurized at high pressure and can be regulated by a gas source, and the booster pump selects and uses sprague products produced by Teledyne USA. A switch is arranged on the gas transmission pipeline of the high-pressure gas cylinder 16 to control the high-pressure gas cylinder 16 to be opened and closed and control whether the high-pressure gas cylinder is used for gas transmission, and the switch is preferably an electric ball valve.
The high-temperature high-pressure fluid solid phase deposition simulation device also comprises a pressure detection system, a temperature detection system and a control system, wherein the pressure detection system is respectively arranged on the sample preparation injection system, the solid phase deposition system and the back pressure system and is used for respectively measuring the pressure of the sample preparation injection system, the pressure of the solid phase deposition system and the pressure of the back pressure system; that is, on the pipeline where the liquid outlet of the plunger pump, the sample preparation device 1, the sample preparation back pressure device 4 and the back pressure buffer device 6 are connected and the shaft simulation device, the pressure of the pipeline where the liquid outlet of the plunger pump, the sample preparation device 1, the sample preparation back pressure device 4 and the back pressure buffer device 6 are connected and the shaft simulation device are measured, and meanwhile, a pressure detection system can be arranged on the gas outlet connecting pipeline of the high-pressure gas cylinder 16 to detect the pressure of the gas output pipeline of the high-pressure gas cylinder 16. The pressure sensing system is a plurality of pressure sensors 14, which are commercially available products, selected according to actual requirements, preferably Sensors.
The temperature detection system is respectively arranged on the sample preparation injection system, the solid phase deposition system and the back pressure system, the sample preparation injection system, the temperature of the solid phase deposition system and the back pressure system are respectively measured, namely, the sample preparation device 1, the sample preparation back pressure device 4, the back pressure device 7, the shaft simulation device and the high-low temperature condensation device 17 are respectively provided with a temperature detection system, the temperature of the sample preparation device 1, the sample preparation back pressure device 4, the back pressure device 7, the shaft simulation device and the high-low temperature condensation device 17 is measured, the temperature detection system is a plurality of temperature sensors 15, the temperature detection system is a thermal resistance type temperature sensor, is a commercially available product and is selected according to actual requirements.
The control system is respectively electrically connected with the pressure detection system, the temperature detection system, the sample preparation injection system, the solid phase deposition system, the back pressure system and the cleaning system to control the actions of the sample preparation injection system, the solid phase deposition system, the back pressure system and the cleaning system, the control system is provided with a data acquisition module and a control module, the data acquisition module acquires real-time detection data of each pressure sensor and each temperature sensor, the control module controls the sample preparation injection system, the solid phase deposition system, the back pressure system and the cleaning system to act according to the data of the data acquisition module, meanwhile, each electric ball valve on the connecting pipeline is controlled to act, so that the whole high-temperature high-pressure fluid solid phase deposition device acts according to a program preset in the control module to simulate the sample preparation of a stratum sample, the solid phase deposit is obtained by changing the pressure and temperature of the fluid in the sample cylinder, and the amount of the solid phase deposit in the fluid is detected by filtering, collecting and weighing.
When the high-temperature high-pressure fluid solid phase deposition device works, a simulated formation sample is configured in the sample preparation device 1, after the fluid sample is configured, the output power device 2 acts, the fluid sample flows out of a liquid outlet of the sample preparation device 1 and enters the shaft 11 through a connecting pipeline, the stirring device 18 acts to stir the fluid sample in the shaft 11 to ensure the uniformity of the fluid sample, the fluid sample flows out of the shaft 11 and enters the filtering device 13 for filtering, asphalt and wax in the fluid sample are deposited, and the fluid part flows out of the filtering device 13 and enters the shaft 11 again for filtering again under the action of the circulating device; in the process of preparing a sample of a fluid sample and circularly filtering the fluid sample by the shaft 11 and the filter device 13, the sample preparation back pressure device 4 controls the pressure of the liquid outlet of the sample preparation device 1, so that the characteristic change of the fluid sample due to the pressure change when the fluid sample flows out of the sample preparation device 1 is avoided, meanwhile, the back pressure device 7 controls the pressure of the liquid inlet of the shaft 11, the sample preparation back pressure device 4 and the back pressure device 7 provide back pressure under the action of the back pressure power device 5, and the back pressure buffer device 6 performs pressure buffer, so that the pressure stability of the sample preparation back pressure device 4 and the back pressure device 7 is ensured, and in the process of flowing the fluid sample in the flow, the high-pressure gas cylinder 16 inputs high-pressure gas into a conveying pipeline in the flow, the problem of flash evaporation of the fluid sample is avoided, the pressure in the sample preparation device 1 is ensured to be constant, and the discharge pressure of. In the process, the pressure detection system and the temperature detection system detect the temperature and the pressure of each point at any time, transmit detection data to the control system, and control the sample preparation injection system, the back pressure system and the solid phase deposition system to act through the measured pressure and temperature so as to measure the solid phase deposition of the fluid sample.
When the well bore 11 and the pipeline are filled with the fluid sample medium, the fluid circulates in the pipeline under the action of the circulating pump 8, the solid phase deposit is conveyed to the filter for filtration, and asphalt and wax are deposited in the filter. In the process, the two filters are switched to be used, when one parameter experiment is finished, the switch is switched to the other filter, the former filter is dismounted, and the sediment in the former filter is taken out to be dried and weighed.
In this process, the properties of the fluid sample are observed by the CCD camera, and the fluid sample is observed at the high pressure window 10.
After each parameter experiment, the deposited asphalt is filtered, and finally the asphalt in the filter in each parameter (the number of the parameters is selected according to actual requirements) process is respectively taken out, dried and weighed.
And after the experiment is finished, the cleaning device acts to clean the whole high-temperature high-pressure fluid solid-phase deposition device.
By adopting the technical scheme, the device has the advantages of compact structure, convenient assembly and disassembly, and a sample preparation injection system, can prepare samples of fluid samples, simulate formation fluid, has a solid phase deposition system, simulate the pressure and temperature change condition in the oil reservoir exploitation process, carry out solid phase deposition, solve the problem of solid phase deposition in the oil reservoir exploitation of deep gas reservoir, condensate gas reservoir and gas injection miscible-phase flooding, provide scientific research means and prediction evaluation technology, avoid causing reservoir damage and blockage and shaft, and facilitate the oil reservoir exploitation.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (12)
1. The utility model provides a high temperature high pressure fluid solid phase deposition analogue means which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the sample preparation and injection system is used for preparing and outputting the fluid sample;
the solid phase deposition system is communicated with the sample preparation injection system and is used for carrying out solid phase deposition on the fluid sample output by the sample preparation injection system;
the back pressure system is respectively communicated with the sample preparation injection system and the solid phase deposition system and is used for controlling the pressure of the solid phase deposition system;
the sample preparation injection system is used for preparing a fluid sample, the fluid sample is input into the solid phase deposition system, the fluid sample is subjected to solid phase deposition, the pressure of the solid phase deposition system is controlled through the back pressure system, and the solid phase deposition is subjected to measurement detection by adopting a weighing method.
2. The apparatus according to claim 1, wherein the apparatus comprises: the sample preparation injection system comprises a sample preparation device, an output power device and a sample preparation back pressure device, wherein the output power device, the sample preparation device and the sample preparation back pressure device are sequentially communicated, the sample preparation device is used for preparing the fluid sample and outputting the fluid sample under the action of the output power device, and the sample preparation back pressure device is used for keeping the pressure of the sample preparation device constant in the process of outputting the fluid sample.
3. The apparatus according to claim 1 or 2, wherein: the solid phase deposition system comprises a shaft simulation device, a filtering device, a constant temperature device and a circulating device, wherein,
the well bore simulation device is communicated with the filtering device and is used for filtering the fluid sample in the well bore simulation device and depositing solid phase sediments;
the shaft simulation device and the filtering device are both arranged in the constant temperature device, and the temperature of the shaft simulation device and the temperature of the filtering device are controlled;
the circulating device is respectively connected with the well bore simulation device and the filtering device and circulates the fluid sample.
4. The apparatus according to claim 3, wherein: the shaft simulating device comprises a shaft, a stirring device, a high-low temperature condensing device and a visual observation device, wherein,
the stirring device is connected with the well bore and is used for stirring the fluid sample in the well bore;
the high and low temperature condensation device is connected with the shaft and is used for adjusting the temperature of the fluid sample in the shaft;
and two ends of the visual observation device are respectively communicated with the shaft, so that the characteristic of the fluid sample is observed.
5. The apparatus according to claim 4, wherein the apparatus comprises: the visual observation device comprises a window and an observation recording device, wherein two ends of the window are respectively communicated with the shaft and used for circulating the fluid sample, and the observation recording device is arranged on the window and used for recording data characteristics of the fluid sample.
6. The apparatus according to claim 5, wherein: the observation recording device is a CCD camera.
7. The apparatus according to claim 4 or 5, wherein: the quantity of filter equipment be a plurality of, a plurality of filter equipment's one end all with the pit shaft intercommunication, the other end all with circulating device intercommunication.
8. The apparatus according to claim 1, 2, 4, 5 or 6, wherein: the back pressure system comprises a back pressure power device, a back pressure buffer device and a back pressure device, wherein,
the back pressure power device is communicated with the back pressure buffer device to control back pressure;
the back pressure buffering device is respectively connected with the back pressure device and the sample preparation injection system and is used for pressure buffering of the back pressure device and the sample preparation injection system;
and the back pressure device is connected with the solid phase deposition system and is used for back pressure and pressure regulation.
9. The apparatus according to claim 3, wherein: the back pressure system comprises a back pressure power device, a back pressure buffer device and a back pressure device, wherein the back pressure power device is communicated with the back pressure buffer device and controls back pressure; the back pressure buffering device is respectively connected with the back pressure device and the sample preparation injection system and is used for pressure buffering of the back pressure device and the sample preparation injection system; and the back pressure device is connected with the solid phase deposition system and is used for back pressure and pressure regulation.
10. The apparatus according to claim 8, wherein the apparatus comprises: the high-temperature high-pressure fluid solid phase deposition simulation device further comprises a cleaning system, wherein two ends of the cleaning system are respectively connected with the sample preparation injection system and used for cleaning the simulation device.
11. The apparatus according to claim 10, wherein: the high-temperature high-pressure fluid solid phase deposition simulation device further comprises a conveying pipeline pressure maintaining system, wherein the conveying pipeline pressure maintaining system is respectively communicated with the sample preparation injection system and the solid phase deposition system and is used for maintaining the pressure of the fluid sample in the flowing process unchanged.
12. The apparatus according to claim 10 or 11, wherein: the high-temperature high-pressure fluid solid phase deposition simulation device also comprises a pressure detection system, a temperature detection system and a control system, wherein,
the pressure detection system is respectively arranged on the sample preparation injection system, the solid phase deposition system and the back pressure system and is used for respectively measuring the pressure of the sample preparation injection system, the pressure of the solid phase deposition system and the pressure of the back pressure system;
the temperature detection system is respectively arranged on the sample preparation injection system, the solid phase deposition system and the back pressure system and is used for respectively measuring the temperature of the sample preparation injection system, the temperature of the solid phase deposition system and the temperature of the back pressure system;
the control system is respectively electrically connected with the pressure detection system, the temperature detection system, the sample preparation injection system, the solid phase deposition system and the back pressure system and the cleaning system, and controls the actions of the sample preparation injection system, the solid phase deposition system, the back pressure system and the cleaning system.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816359A (en) * | 2021-01-06 | 2021-05-18 | 西南石油大学 | Device and method for determining solid deposition amount of crude oil in solid-phase deposition oil reservoir |
| CN113075081A (en) * | 2021-04-08 | 2021-07-06 | 西南石油大学 | Device and method for measuring solid phase deposition amount in multiple contact processes of injected gas and crude oil |
| CN113504101A (en) * | 2021-08-10 | 2021-10-15 | 西南石油大学 | Magnetic stirring high-temperature high-pressure oil gas fluid sample preparation device and sample preparation method |
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2020
- 2020-02-17 CN CN202020177857.1U patent/CN211718025U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816359A (en) * | 2021-01-06 | 2021-05-18 | 西南石油大学 | Device and method for determining solid deposition amount of crude oil in solid-phase deposition oil reservoir |
| CN113075081A (en) * | 2021-04-08 | 2021-07-06 | 西南石油大学 | Device and method for measuring solid phase deposition amount in multiple contact processes of injected gas and crude oil |
| CN113504101A (en) * | 2021-08-10 | 2021-10-15 | 西南石油大学 | Magnetic stirring high-temperature high-pressure oil gas fluid sample preparation device and sample preparation method |
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