CN205135580U - Long rock core carbon dioxide gas drives experimental system - Google Patents
Long rock core carbon dioxide gas drives experimental system Download PDFInfo
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- CN205135580U CN205135580U CN201520902153.5U CN201520902153U CN205135580U CN 205135580 U CN205135580 U CN 205135580U CN 201520902153 U CN201520902153 U CN 201520902153U CN 205135580 U CN205135580 U CN 205135580U
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- carbon dioxide
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/70—Combining sequestration of CO2 and exploitation of hydrocarbons by injecting CO2 or carbonated water in oil wells
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Abstract
The utility model relates to a long rock core carbon dioxide gas drives the experimental apparatus, belong to conventional gas and oil experiment technical field, the key feature is the internal rubber sleeve that has the long rock core of parcel of long rock core holder stainless steel barrel, the internal wall of stainless steel barrel and the rubber sleeve between constitute the confined pressure chamber, a plurality of bellied pressure measurement station holes circle has on the rubber sleeve, the peripheral parcel confinement ring of pressure measurement station hole circle, put into the connecting pipe line in the circle of pressure measurement station hole, and the cone pressure measurement inserts that has the internal channel, the outer pipeline of pressure measurement inserts passes the end cap of long rock core holder tip and connects corresponding pressure sensor, the signal line linked computers of pressure sensors output end, each intermediate receptacle is through the entrance point of the long rock core holder of import pipeline connection, the backpressure valve is connected to the exit end of long rock core holder, the confined pressure pump that sets up physically and with confined pressure chamber in the barrel communicates with each other through the stainless steel barrel of the long rock core holder of pipeline connection, the utility model discloses the multiple spot of realizing the rock core internal pressure detects, for further study oil reservoir stratum filtering flow environment, carbon dioxide and in -place oil mixed phase mechanism, the residual oil distribution provides effectual technological means.
Description
Technical field
The utility model relates to a kind of oil gas and to gather level determinations system, particularly relate to a kind of long cores carbon dioxide gas drive experimental facilities, it is simulated target reservoir condition in laboratory conditions, carbon dioxide is utilized easily to form the physicochemical characteristic of supercritical fluid and fully contact the feature of rear easy mixed phase with in-place oil, by change experiment parameter, displacement survey is carried out to formation fluid saturated in rock core and obtain its final oil displacement efficiency, inject fluid pressure fluctuations numerical value in real time record rock core and the migration velocity of Fluid Computation accordingly, combine gas-oil ratio that survey obtains,
Note is adopted the experimental datas such as pressure, moisture content, ultimate recovery and processes, obtain the instrument of best method of gas injection, determine that in conjunction with minimum miscibility pressure the experimental datas such as experiment, the experiment of in-place oil Physical Property Analysis, the permanent matter swell of reservoir fluid provide technical support for production scene, belong to conventional gas and oil experimental technique field.
Background technology
The low-permeability oil deposit proportion of discovered in recent years is increasing, account for 50% in China, low-permeability oil deposit because of reservoir permeability low, natural energy is inadequate, elastic energy exhaustion is fast, and waterflooding extraction is subject to severely restricts because geology reservoir limits therefore exploitation difficulty is large.In the oil gas field developed, though many oil fields enter mid-later development phase, but still considerable part crude oil is had to remain in underground mining not out.A large amount of lab and field facts have proved; enter after stratum fully contacts with in-place oil using the carbon dioxide being in Supercritical Conditions as displacement solvent; mixed phase is formed or near miscible flooding replaces, for improving water-oil phase mobility ratio, improving stratum energy, improve seepage environment and then effectively improving oil recovery factor and all there is positive effect environmental protection aspect after effectively making crude oil expansion, viscosity reduction, reduction oil water interfacial tension, contact mixed phase.Displacement test is carried out by the method for current rubber sleeve sealing rock core in simulating lab test, because under high-temperature and high-pressure conditions, rubber sleeve pressure tap place easily occurs poorly sealed, fluid leaks to the problem of the failure of an experiment, therefore mostly adopt sealing performance plumbous cover sealing rock core preferably, due to the characteristic restriction of lead cover own material, on lead cover, perforate setting pressure sensor very easily causes plumbous cover to damage, the inner multipoint pressure measure of rock core cannot be carried out, cannot to detect in rock core pressure oscillation numerical value to survey that experimental data is imperfect and accuracy does not reach requirement of experiment, removal of core group the distribution of its residual oil and saturation ratio cannot be detected after having tested, adverse effect is caused for formulating next step development plan accurately.It is comparatively large to there is again investment in the external experimental facilities of import, later stage problem costly.
Utility model content
The purpose of this utility model is to provide a kind of long cores carbon dioxide gas drive experimental system, solve existing long cores model to seal because adopting plumbous cover mode, cannot cause that experimental data is imperfect and accuracy inadequate by rock core fluid pressure numerical value in real time record displacement process, cannot the problem such as complete removal of core after having tested.The inner multipoint pressure measure of rock core in displacement process can be carried out by the utility model, automatically the real-time pressure value of each pressure tap is recorded, array long rock core holder being carried out series and parallel connects can better simulated target Reservoir Heterogeneity condition, thus improves experimental data integrality, accuracy; Confined pressure pump can by default pressure reduction from motion tracking injection pressure make instrumentation easy, reduce labour intensity; Tested rear rock core group can complete taking-up to carry out lower step detection.
The purpose of this utility model realizes in the following manner, a kind of long cores carbon dioxide gas drive experimental system, comprise injection pump, the injecting mechanism that some intermediate receptacles with heater are formed, there is the long rock core holder of heater and the long cores model of pressure sensor formation, the back pressure mechanism that back-pressure valve and annex are formed, gas-liquid separator, aerometer gauge, the collecting mechanism that balance is formed, computer, the computer mechanism that holding wire is formed and temperature control device, it is characterized in that, there is in described long rock core holder stainless steel cylinder the rubber sleeve of parcel long cores, stainless steel cylinder inwall and and rubber sleeve between form confined pressure chamber, rubber sleeve has the pressure-measuring-point hole circle of some projections, pressure-measuring-point hole circle peripheral parcel confinement ring, connecting line is inserted in the circle of pressure-measuring-point hole, and there is the cone pressure measurement inserts of internal channel, pipeline outside pressure measurement inserts connects corresponding pressure sensor through the plug of long rock core holder end, the holding wire of pressure sensor output connects computer, each intermediate receptacle connects the entrance point of long rock core holder through inlet line, the port of export of long rock core holder connects back-pressure valve, the confined pressure pump arranged connects the stainless steel cylinder of long rock core holder through pipeline and communicates with the confined pressure chamber in cylindrical shell.
Described long rock core holder to be connected in series or in parallelly made up of several.
The pressure-measuring-point hole circle of the some projections on described rubber sleeve is equi-spaced apart setting.
Described cone pressure measurement inserts adopts stainless steel.
Described confinement ring adopts stainless steel material.
Described rubber sleeve adopts FFKM material.
The utility model adopts rubber sleeve to seal rock core in the stainless steel cylinder of long rock core holder, cone pressure measurement inserts in the pressure-measuring-point hole circle of the some projections on rubber sleeve is through connecting line Bonding pressure sensor, the multiple spot realizing rock intracardiac pressure detects, by changing injection rate, inject position, the parameters such as displacement mode finally to be gathered level determinations to in-place oil in rock core, obtain pressure and displacement time curve, calculate the migration velocity of infusion in rock core, observe because of replacement front phase-state change mineralization pressure fluctuating range, injection production pressure difference reasonable in design on this basis extends the carbon dioxide breakthrough time, and then determine best injection mode, be study oil reservoir stratum filtration environment further simultaneously, carbon dioxide and in-place oil mixed phase mechanism, residual oil distribution provides effective technological means.
The utility model the key technical indexes:
(1) service condition: normal temperature ~ 150 DEG C, normal pressure ~ 70Mpa.
(2) Pressure Sensor Precision reaches 0.1%FS; Experimental temperature error ± 0.5 DEG C.
(3) rock core specification: φ 25 × 1000mm, equidistant placement four pressure-measuring-points;
(4) store each experiment parameter according to the hole multiple injected or time automatic acquisition and recording, and form data sheet.
Described confined pressure is followed the tracks of pump and from motion tracking injection pressure, can be kept setting pressure reduction, separately have manual, electronic, pressure-keeping functions.
Design pressure 70MPa, single chamber volume 100ml
Described back-pressure valve is made up of valve body, back pressure snubber, manual adjustments pump.
Design pressure 70MPa, pressure arranges precision ± 0.1MPa.
Accompanying drawing explanation
Fig. 1 is the utility model structured flowchart;
In figure, 1 injection pump, 2 intermediate receptacles, 3 inlet line, 4 pressure sensors, 5 long rock core holder, 6 confined pressure pumps, 7 connecting lines, 8 back-pressure valves, 9 holding wires, 10 computers, 11 confined pressure chambeies, 12 rubber sleeves, 13 stainless steel confinement ring, 14 pressure measurement inserts, 15 outlet lines, 16 gas-liquid separators, 17 balances, 18 aerometer gauge.
Detailed description of the invention
The utility model is further illustrated by reference to the accompanying drawings with real examination example, as shown in Figure 1, the utility model comprises injection pump 1, has the injecting mechanism of some intermediate receptacles 2 of heater formation, there is the long cores model of some long rock core holder 5 of heater, pressure sensor 4 formation, the confined pressure mechanism that confined pressure pump 6, connecting line 7 are formed, the back pressure mechanism that back-pressure valve 8 and annex are formed, the collecting mechanism that gas-liquid separator 16, balance 17, gas 18 are formed, computer 10, the computer mechanism that holding wire 9 is formed and temperature control device.Long rock core holder 5 to be connected in series or in parallelly made up of several.The rubber sleeve 12 that can wrap up natural core is loaded in each long rock core holder 5, rubber sleeve 12 has the pressure-measuring-point hole circle of some projections, each pressure-measuring-point hole circle outer wrapping stainless steel confinement ring 13, connecting line is inserted in the circle of pressure-measuring-point hole, and there is the cone pressure measurement inserts 14 of internal channel, connect the plug Bonding pressure sensor 4 of pipeline through long rock core holder 5 end of cone pressure measurement inserts 14, the holding wire 9 of pressure sensor 4 output connects computer 10, each intermediate receptacle 2 connects the entrance point of long rock core holder 5 through inlet line 3, the port of export of long rock core holder 5 connects back-pressure valve 8, the confined pressure pump 6 arranged connects long rock core holder 5 through pipeline.
In this reality examination example, rubber sleeve 12 have four pressure-measuring-point hole circles, pipeline outside cone pressure measurement inserts 14 in the circle of each pressure-measuring-point hole connects corresponding pressure sensor 4 respectively, pressure sensor 4 is connected with computer 10 by holding wire 9, injection pump 1 is in parallel with several intermediate receptacles 2 by inlet line 3, intermediate receptacle 2 is connected with core holding unit 5, core holding unit 5 is connected with back-pressure valve 8 by outlet line 15, and outlet line 15 and the connecting line of aerometer gauge 18 insert in the gas-liquid separator 16 that is placed on balance 17 respectively.
Described data acquisition mechanism gathers pressure, flow, temperature signal in experiment.Force value is shown by rock core pressure tap and pressure digital display meter, is gathered by the RS232 mouth on digital display meter; Temperature sensor signal, by temperature controller numerical monitor, control, passes to computer by communication serial ports; Electronic circuit controls system pressure, temperature, and is provided with the safeguard measure such as superpressure, overtemperature power-off.Software runs under windows2000/XP environment, adopts VB programming.Adopt menu pull-down structure, be divided into front cover, main interface, sub-interface.Each experiment parameter can be stored according to injection pore volume multiple and the automatic acquisition and recording of injection length, and form data sheet.
Described controlling organization controls from external equipments such as motion tracking pump, instrument, electric change valves automatically to injection pump, confined pressure.By the communication interface of pump, the pressure of injection pump, flow, mode of operation are carried out and controlled; Control confined pressure maintains displacement pressure and confined pressure pressure reduction from motion tracking pump.Temperature protection point, pressure protect point are set and controlled, guarantees that the safety of instrument is normal and run.
Rubber sleeve in the utility model, confined pressure pump, back-pressure valve, gas-liquid separator, aerometer gauge, balance, air bath, temperature pick up and pressure sensor are existing product.
Claims (6)
1. a long cores carbon dioxide gas drive experimental system, comprise injection pump, the injecting mechanism that some intermediate receptacles with heater are formed, there is the long rock core holder of heater and the long cores model of pressure sensor formation, the back pressure mechanism that back-pressure valve and annex are formed, gas-liquid separator, aerometer gauge, the collecting mechanism that balance is formed, computer, the computer mechanism that holding wire is formed and temperature control device, it is characterized in that, there is in described long rock core holder stainless steel cylinder the rubber sleeve of parcel long cores, stainless steel cylinder inwall and and rubber sleeve between form confined pressure chamber, rubber sleeve has the pressure-measuring-point hole circle of some projections, pressure-measuring-point hole circle peripheral parcel confinement ring, connecting line is inserted in the circle of pressure-measuring-point hole, and there is the cone pressure measurement inserts of internal channel, pipeline outside pressure measurement inserts connects corresponding pressure sensor through the plug of long rock core holder end, the holding wire of pressure sensor output connects computer, each intermediate receptacle connects the entrance point of long rock core holder through inlet line, the port of export of long rock core holder connects back-pressure valve, the confined pressure pump arranged connects the stainless steel cylinder of long rock core holder through pipeline and communicates with the confined pressure chamber in cylindrical shell.
2. long cores carbon dioxide gas drive experimental system according to claim 1, is characterized in that, described long rock core holder to be connected in series or in parallelly made up of several.
3. long cores carbon dioxide gas drive experimental system according to claim 1, is characterized in that, the pressure-measuring-point hole circle of the some projections on described rubber sleeve is equi-spaced apart setting.
4. long cores carbon dioxide gas drive experimental system according to claim 1, is characterized in that, described cone pressure measurement inserts adopts stainless steel.
5. long cores carbon dioxide gas drive experimental system according to claim 1, is characterized in that, described confinement ring adopts stainless steel material.
6. long cores carbon dioxide gas drive experimental system according to claim 1, is characterized in that, described rubber sleeve adopts FFKM material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520902153.5U CN205135580U (en) | 2015-11-13 | 2015-11-13 | Long rock core carbon dioxide gas drives experimental system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520902153.5U CN205135580U (en) | 2015-11-13 | 2015-11-13 | Long rock core carbon dioxide gas drives experimental system |
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| CN205135580U true CN205135580U (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520902153.5U Expired - Fee Related CN205135580U (en) | 2015-11-13 | 2015-11-13 | Long rock core carbon dioxide gas drives experimental system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437637A (en) * | 2016-09-19 | 2017-02-22 | 北京科技大学 | Visualization microscopic experimental device and method for displacing super heavy oil by using high-temperature high-pressure carbon dioxide |
| CN106448421A (en) * | 2016-07-05 | 2017-02-22 | 中国石油大学(北京) | Dense oil reservoir exploitation simulation device and method |
| CN106884635A (en) * | 2017-03-03 | 2017-06-23 | 中国石油大学(北京) | Low, the extra-low permeability oil reservoirs CO of one kind2Drive the assay method of minimum miscibility pressure |
| CN108802338A (en) * | 2018-07-18 | 2018-11-13 | 华南理工大学 | A kind of rock core displacement device of achievable synchronous evaluation oil displacement efficiency |
| CN109162681A (en) * | 2018-10-08 | 2019-01-08 | 中国石油天然气股份有限公司 | For simulating the long core test system and method for heavy crude reservoir |
| CN109854235A (en) * | 2018-12-12 | 2019-06-07 | 中国石油大学(北京) | Oil-gas reservoir failure and exploitation simulator of handling up |
| CN110320140A (en) * | 2018-03-30 | 2019-10-11 | 中国石油化工股份有限公司 | CO2Imbibition experimental provision and method under effect |
| CN111948107A (en) * | 2019-05-14 | 2020-11-17 | 中国石油天然气股份有限公司 | Carbon dioxide infiltration rock core experiment device, experiment system and experiment method |
| CN112557199A (en) * | 2019-09-25 | 2021-03-26 | 中国石油天然气股份有限公司 | Rock gas breakthrough pressure measuring device suitable for high-temperature and high-pressure conditions |
| CN113358683A (en) * | 2021-06-11 | 2021-09-07 | 西南石油大学 | Water flooding experimental device and method for researching core end face effect |
-
2015
- 2015-11-13 CN CN201520902153.5U patent/CN205135580U/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106448421B (en) * | 2016-07-05 | 2019-02-19 | 中国石油大学(北京) | Fine and close oil reservoir exploitation simulator and method |
| CN106448421A (en) * | 2016-07-05 | 2017-02-22 | 中国石油大学(北京) | Dense oil reservoir exploitation simulation device and method |
| CN106437637A (en) * | 2016-09-19 | 2017-02-22 | 北京科技大学 | Visualization microscopic experimental device and method for displacing super heavy oil by using high-temperature high-pressure carbon dioxide |
| CN106437637B (en) * | 2016-09-19 | 2018-12-25 | 北京科技大学 | High temperature and pressure carbon dioxide flooding super-viscous oil visualizes microcosmos experiment method |
| CN106884635A (en) * | 2017-03-03 | 2017-06-23 | 中国石油大学(北京) | Low, the extra-low permeability oil reservoirs CO of one kind2Drive the assay method of minimum miscibility pressure |
| CN110320140A (en) * | 2018-03-30 | 2019-10-11 | 中国石油化工股份有限公司 | CO2Imbibition experimental provision and method under effect |
| CN110320140B (en) * | 2018-03-30 | 2021-09-14 | 中国石油化工股份有限公司 | CO2Imbibition experimental device and method under action |
| CN108802338A (en) * | 2018-07-18 | 2018-11-13 | 华南理工大学 | A kind of rock core displacement device of achievable synchronous evaluation oil displacement efficiency |
| CN109162681A (en) * | 2018-10-08 | 2019-01-08 | 中国石油天然气股份有限公司 | For simulating the long core test system and method for heavy crude reservoir |
| CN109854235A (en) * | 2018-12-12 | 2019-06-07 | 中国石油大学(北京) | Oil-gas reservoir failure and exploitation simulator of handling up |
| CN109854235B (en) * | 2018-12-12 | 2020-09-04 | 中国石油大学(北京) | Oil and gas reservoir failure and huff and puff exploitation simulator |
| CN111948107A (en) * | 2019-05-14 | 2020-11-17 | 中国石油天然气股份有限公司 | Carbon dioxide infiltration rock core experiment device, experiment system and experiment method |
| CN111948107B (en) * | 2019-05-14 | 2023-05-26 | 中国石油天然气股份有限公司 | Carbon dioxide infiltration rock core experimental device, experimental system and experimental method |
| CN112557199A (en) * | 2019-09-25 | 2021-03-26 | 中国石油天然气股份有限公司 | Rock gas breakthrough pressure measuring device suitable for high-temperature and high-pressure conditions |
| CN112557199B (en) * | 2019-09-25 | 2022-10-04 | 中国石油天然气股份有限公司 | Rock gas breakthrough pressure measuring device suitable for high-temperature and high-pressure conditions |
| CN113358683A (en) * | 2021-06-11 | 2021-09-07 | 西南石油大学 | Water flooding experimental device and method for researching core end face effect |
| CN113358683B (en) * | 2021-06-11 | 2022-04-12 | 西南石油大学 | Water flooding experimental device and method for researching core end face effect |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 Termination date: 20161113 |