CN107462693B - High-precision CO 2 Quantitative adding instrument and quantitative adding method thereof - Google Patents
High-precision CO 2 Quantitative adding instrument and quantitative adding method thereof Download PDFInfo
- Publication number
- CN107462693B CN107462693B CN201710703286.3A CN201710703286A CN107462693B CN 107462693 B CN107462693 B CN 107462693B CN 201710703286 A CN201710703286 A CN 201710703286A CN 107462693 B CN107462693 B CN 107462693B
- Authority
- CN
- China
- Prior art keywords
- chamber
- valve
- regulating
- pressure
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- G01N33/26—Oils; viscous liquids; paints; inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/2823—Oils, i.e. hydrocarbon liquids raw oil, drilling fluid or polyphasic mixtures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1095—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices for supplying the samples to flow-through analysers
- G01N35/1097—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices for supplying the samples to flow-through analysers characterised by the valves
Abstract
The high-precision CO2 quantitative adding instrument comprises a CO2 air source chamber, a regulating chamber and an adding chamber which are mutually connected through pipelines, wherein a first valve and a second valve are arranged on a connecting pipeline between the CO2 air source chamber and the regulating chamber, and a second valve and a third valve are arranged on a connecting pipeline between the regulating chamber and the adding chamber; the regulating chamber is connected with a pressure regulator and a pressure gauge, and the adding chamber is connected with an injection pump; the adding chamber is connected with the reaction kettle through a connecting pipeline arranged between the third valve and the adding chamber, and a fourth valve is arranged on the connecting pipeline of the adding chamber and the reaction kettle. And high-precision CO using the same 2 A quantitative adding method of a quantitative adding instrument. And a certain amount of CO2 gas can be accurately measured and added into the phase experiment reaction vessel, so that the accuracy and reliability of an experiment result are effectively ensured.
Description
Technical Field
The invention relates to a crude oil component-CO 2 The field of system phase experimental research, in particular to a method for applying CO in crude oil phase experimental research 2 A gas high-precision quantitative adding instrument and a quantitative adding method thereof.
Background
In CO 2 In the research of the flooding recovery technology, the phase experimental research is an important technical means, and each component in crude oil and CO 2 The law of phase change of the system is the main content of research. During experimental investigation, by changing the crude oil component-CO 2 CO in the system 2 The relative amounts of substances in the gas are recorded under different temperature and pressure conditions for the crude oil component-CO 2 The phase change data of the system are further summarized, and the technology and the method for improving the recovery ratio of crude oil are explored.
In the phase state experiment process, a certain amount of CO is continuously added into the system 2 The gas can increase CO in the system 2 Molar fraction of (c). Typically using ISCO pumps at constant pressurePumping a certain volume of CO 2 Enter a reaction kettle so as to change CO in the system 2 Molar fraction of (c). In the experimental process, CO can be realized only when the injection pressure of the ISCO pump is larger than the pressure in the reaction kettle 2 Pumping in, which causes pressure imbalance and thus CO addition 2 The amount of gas produces errors. At the same time, it is easy to cause no pumping or CO 2 The cause of the gas reflux phenomenon. When a set of experiments requires multiple runs of CO 2 When the method is added, error accumulation can seriously affect the accuracy of experimental results. Therefore, there is an urgent need for a high-precision quantitative measurement of CO in phase experimental research 2 The gas adding instrument can accurately measure and add a certain amount of CO in the phase state experiment process 2 And the gas flows into the reaction kettle, so that the accuracy of an experiment result is ensured.
Disclosure of Invention
In view of the above, the present invention proposes a high-precision CO to solve the problems of the above-mentioned technologies 2 Quantitative adding instrument and quantitative adding method thereof for accurately measuring and adding a certain amount of CO 2 The gas enters the phase experiment reaction vessel, thereby effectively ensuring the accuracy and reliability of the experiment result.
High-precision CO 2 The quantitative adding instrument comprises CO which are connected with each other through pipelines 2 An air source chamber, a regulating chamber and an adding chamber, wherein, CO 2 A first valve and a second valve are arranged on a connecting pipeline between the air source chamber and the regulating chamber, and a second valve and a third valve are arranged on a connecting pipeline between the regulating chamber and the adding chamber; the regulating chamber is connected with a pressure regulator and a pressure gauge, and the adding chamber is connected with an injection pump; the adding chamber is connected with the reaction kettle through a connecting pipeline arranged between the third valve and the adding chamber, and a fourth valve is arranged on the connecting pipeline of the adding chamber and the reaction kettle.
Preferably, the control chamber and the addition chamber are piston containers.
Preferably, the pressure gauge is arranged in the regulating chamber and the CO 2 The air source chamber and/or the adding chamber are/is connected with one end, and the pressure regulator is arranged at the other end of the regulating chamber.
Preferably, the injection pump is arranged at the other end of the connecting end of the adding chamber and the regulating chamber and/or the reaction kettle.
Preferably, the volume of the addition chamber is 2.43L.
Adopt above-mentioned high accuracy CO 2 The quantitative adding method of the quantitative adding instrument comprises the steps of firstly closing a third valve and a fourth valve, and opening a first valve and a second valve to enable CO to be obtained 2 CO in air source chamber 2 The gas enters and fills the regulating chamber; then the first valve is closed, the third valve is opened, and the CO in the control room is controlled 2 Entering and filling the addition chamber; according to the CO to be added 2 Setting the pressure of the pressure regulator, and monitoring the pressure in the regulating chamber through a pressure gauge to balance the pressure in the regulating chamber and the adding chamber; finally, the second valve and the third valve are closed, the fourth valve is opened, and the CO in the adding chamber is added by the injection pump 2 And pumping gas into the reaction kettle, and closing a fourth valve.
Preferably, different amounts of CO are measured by setting different pressures with pressure regulators 2 And (3) quantitatively adding the gas with high precision.
After adopting the technology proposed by the invention, the high-precision CO according to the embodiment of the invention 2 The quantitative adding instrument and the quantitative adding method thereof have the beneficial effects that:
1. the pressure of the regulating chamber is monitored by a pressure sensor, the volume of the adding chamber is fixed, and CO in the adding chamber can be realized by regulating the pressure of the pressure controller 2 High-precision quantitative measurement of gas to realize CO 2 High-precision measuring and adding of gas.
2. The whole quantitative operation process can be completed at normal temperature and normal pressure, is not influenced by the temperature and pressure in the reaction vessel such as a reaction kettle, improves the experimental precision, and avoids CO 2 The possibility of adding multiple times by mistake in the gas adding process solves the problem of CO 2 The relative content value is large and irregular.
3. The operation can be completed by operating the valve, and the opening and closing of the valve can be controlled by configuring an automatic/intelligent system, so that the operation is convenient and quick, and the experimental efficiency is greatly improved.
4. The device has good sealing performance and can regulate and control indoor residual CO 2 The gas can be reused, thus saving resources.
5. Whole CO 2 The quantitative gas measuring device is connected by adopting a simple piston container, and experimental instrument damage can not occur in experimental operation.
6. In addition, CO can be greatly reduced by changing the volume of the adding chamber 2 The pressure of measuring of gas reduces the dangerous coefficient of experimental operation, greatly reduces the potential safety hazard and risk of experimenters, and reduces the complexity of experimental operation.
Drawings
FIG. 1 shows a high precision CO according to the present invention 2 Schematic diagram of quantitative adding instrument
FIG. 2 shows a high precision CO according to the invention 2 Quantitative adding instrument measuring and adding calculation parameter table
Detailed Description
Various preferred embodiments of the present invention will be described below with reference to the accompanying drawings. The following description is provided with reference to the accompanying drawings to assist in the understanding of the exemplary embodiments of the invention as defined by the claims and their equivalents. It includes various specific details that aid in understanding, but they are to be considered exemplary only. Accordingly, those skilled in the art will recognize that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. Moreover, a detailed description of functions and configurations well known in the art will be omitted for the sake of clarity and conciseness of the present specification.
As shown in fig. 1, a high precision CO 2 The quantitative adding instrument comprises CO which are connected with each other through pipelines 2 An air source chamber 1, a regulating chamber 2 and an adding chamber 3, wherein CO 2 A first valve 51 and a second valve 52 are arranged on a connecting pipeline between the air source chamber 1 and the regulating chamber 2, and a second valve 52 and a third valve 53 are arranged on a connecting pipeline between the regulating chamber 2 and the adding chamber 3; the regulating chamber 2 is connected with a pressure regulator 21 and a pressure gauge 22, and the adding chamber 3 is connected with an injection pump 31; addingThe adding chamber 3 is connected with the reaction kettle 4 through a connecting pipeline arranged between the third valve 53 and the adding chamber 3, and a fourth valve 54 is arranged on the connecting pipeline of the adding chamber 3 and the reaction kettle 4.
As high precision CO according to embodiments of the present invention 2 And the regulating chamber 2 and the adding chamber 3 are piston containers. The pressure gauge 22 is arranged in the regulating chamber 2 and CO 2 The air source chamber 1 and/or the adding chamber 3 are/is connected at one end, and the pressure regulator 21 is arranged at the other end of the regulating chamber 2. The injection pump 31 is arranged at the other end of the connection end of the adding chamber 3 and the regulating chamber 2 and/or the reaction kettle 4. The volume of the addition chamber 3 was 2.43 and L.
Wherein CO 2 The air source chamber 1 is used for providing CO for the regulating chamber 2 2 A gas source; the control chamber 2 is used for providing CO for the adding chamber 3 2 A gas source; the adding chamber 3 is used for quantitatively measuring the required adding CO 2 A gas; pressure controller 21 (pressure controller) for automatically controlling and regulating CO in regulating chamber 2 and adding chamber 3 2 The pressure of the gas realizes high-precision CO measurement 2 The amount of gas; the injection pump 31 is used for adding CO in the chamber 3 2 Pumping gas into a reaction kettle 4 arranged in a constant temperature box 41; a first valve 51, a second valve 52, a third valve 53 and a fourth valve 54 for controlling CO 2 Flow of gas.
The following illustrates high precision CO according to an embodiment of the present invention 2 The working principle of the quantitative adding instrument.
From the gas state equation pv=nrt, it is known that 1 mole of any ideal gas occupies about 22.4L under standard conditions (0 ℃,101 kPa). At 25℃1.01X10 5 At Pa, the volume occupied by 1 mole of any desired gas is about 24.5L. Due to CO 2 The non-ideal gas, which has a compression factor Z, can be known by looking up the related data at 25 ℃ and 1.01X10 5 At Pa, 1mol CO 2 The volume of the gas was about 24.3 and L. Thus, the volume of the addition chamber 3 was set to 2.43L, and as can be seen from the state equation pv=znrt, the control chamber 2 and the addition chamber 3 were filled with CO at room temperature (25 ℃) 2 When the gases are communicated with each other, the regulating pressure is 1.01X10 5 In Pa, addCO in the adding chamber 3 2 The amount of gas was 0.1 mol. When the regulating pressure is 1.01 MPa, adding CO in the chamber 3 2 The amount of gas was 1mol. Thereby adding CO as required 2 By setting the corresponding regulating pressure, the CO can be realized 2 High-precision measuring of gas. In addition, during the pumping and adding process, the connection between the adding chamber 3 and the air source is cut off, thereby realizing high-precision CO adding 2 And (3) gas.
The following specifically describes the use of the high-precision CO described above 2 A quantitative adding method of a quantitative adding instrument.
First, the third valve 53 and the fourth valve 54 are confirmed to be closed, and the first valve 51 and the second valve 52 are opened to let CO flow 2 CO in the gas source chamber 1 2 The gas enters and fills the regulating chamber 2; then the first valve 51 is closed and the third valve 53 is opened to regulate CO in the chamber 2 2 Into and fills the addition chamber 3. The gas movement power of the two steps is from the pressure of the gas source.
Then measuring and measuring according to the CO to be added 2 The pressure of the pressure regulator 21 is set, and the pressure in the regulating chamber 2 is monitored by the pressure gauge 22, so that the pressures in the regulating chamber 2 and the addition chamber 3 are balanced. The gas movement power comes from the pressure regulator.
Finally, the second valve 52 and the third valve 53 are closed, the fourth valve 54 is opened, and the CO in the addition chamber 3 is injected by the injection pump 31 2 Gas is pumped into the reactor 4 and the fourth valve 54 is closed.
After the end of this set of experiments, the above operation was repeated, and different amounts of CO were measured by setting different pressures with the pressure regulator 21 2 And (3) quantitatively adding gas with high precision to complete the whole experimental research process.
The measuring and adding calculation method in the process is shown in FIG. 2, C 24 With CO 2 Composition of CO 2 Total 4 binary system experimental samples with mole fractions of 0%, 25%, 50% and 75%.
The amount of C24 substance in the system is
，CO 2 The amount of substance (A) is->
CO is then 2 Mole fraction in the system
_(〖〗_ )
Wherein:
Suppose C 24 The amount of the substance is n 0 From this, the CO in these 4 binary systems can be calculated 2 The amounts of the substances are respectively as follows: 0. 0.33 n 0 、1 n 0 、3 n 0 。
When the volume of the addition chamber 3 was set to 2.43L according to the gas state equation pv=znrt, CO was measured under the condition of room temperature (25 ℃) when the pressure of the pressure regulator 21 was 1.01325MPa 2 The amount of the substance of the gas was 1mol.
High precision CO according to the embodiments of the present invention described above 2 The quantitative adding instrument monitors the pressure of the regulating chamber 2 by adopting a pressure sensor, the volume of the adding chamber 3 is fixed, and CO in the adding chamber 3 can be realized by adjusting the pressure of a pressure controller 2 High-precision quantitative measurement of gas to realize CO 2 High-precision measuring and adding of gas.
The whole quantitative operation process can be completed at normal temperature and normal pressure, is not influenced by the temperature and pressure in the reaction vessel such as the reaction kettle 4, improves the experimental precision, and avoids CO 2 The possibility of adding multiple times by mistake in the gas adding process solves the problem of CO 2 Large relative content value interval,Irregular spacing.
The operation can be completed by operating the valve, and the opening and closing of the valve can be controlled by configuring an automatic/intelligent system, so that the operation is convenient and quick, and the experimental efficiency is greatly improved.
The device has good tightness and regulates the residual CO in the room 2 2 The gas can be reused, thus saving resources.
Whole CO 2 The quantitative gas measuring device is connected by adopting a simple piston container, and experimental instrument damage can not occur in experimental operation.
In addition, CO can be greatly reduced by changing the volume of the addition chamber 3 2 The pressure of measuring of gas reduces the dangerous coefficient of experimental operation, greatly reduces the potential safety hazard and risk of experimenters, and reduces the complexity of experimental operation.
The foregoing has outlined rather broadly the more detailed description of the invention in order that the detailed description of the principles and embodiments of the invention may be implemented in conjunction with the detailed description of the invention that follows, the examples being merely intended to facilitate an understanding of the method of the invention and its core concepts; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
From the description of the embodiments above, it will be apparent to those skilled in the art that the invention may be practiced. Of course, the above listed cases are only examples, and the present invention is not limited thereto. Those skilled in the art will appreciate that other variations or simplifications of the inventive solution may be suitably employed in the present invention and are intended to be included within the scope of the present invention.
Claims (4)
1. High-precision CO 2 The quantitative adding instrument is characterized by comprising CO which are connected with each other through pipelines 2 An air source chamber (1), a regulating chamber (2) and an adding chamber (3), wherein CO 2 A first valve (51) and a second valve (52) are arranged on a connecting pipeline between the air source chamber (1) and the regulating chamber (2), and the regulating chamber (2) and the adding valveA second valve (52) and a third valve (53) are arranged on the connecting pipeline between the adding chambers (3); the regulating chamber (2) is connected with a pressure regulator (21) and a pressure gauge (22), and the adding chamber (3) is connected with an injection pump (31); the adding chamber (3) is connected with the reaction kettle (4) through a connecting pipeline arranged between the third valve (53) and the adding chamber (3), and a fourth valve (54) is arranged on the connecting pipeline of the adding chamber (3) and the reaction kettle (4); the regulating chamber (2) and the adding chamber (3) are piston containers, and the pressure gauge (22) is arranged between the regulating chamber (2) and CO 2 The air source chamber (1) and/or the adding chamber (3) are/is connected with one end, the pressure regulator (21) is arranged at the other end of the regulating chamber (2), and the injection pump (31) is arranged at the other end of the connecting end of the adding chamber (3) and the regulating chamber (2) and/or the reaction kettle (4).
2. A high precision CO according to claim 1 2 The quantitative adding instrument is characterized in that the volume of the adding chamber (3) is 2.43L.
3. A high precision CO using as claimed in claim 1 or 2 2 A quantitative adding method of a quantitative adding instrument is characterized in that,
closing the third valve (53) and the fourth valve (54), opening the first valve (51) and the second valve (52), and allowing CO to flow 2 CO in the air source chamber (1) 2 The gas enters and fills the regulating chamber (2);
closing the first valve (51), opening the third valve (53), and regulating CO in the chamber (2) 2 Entering and filling the addition chamber (3);
according to the CO to be added 2 Setting the pressure of the pressure regulator (21), and monitoring the pressure in the regulating chamber (2) through the pressure gauge (22) to balance the pressure in the regulating chamber (2) and the adding chamber (3);
closing the second valve (52) and the third valve (53), opening the fourth valve (54), and using the injection pump (31) to add CO in the chamber (3) 2 And (3) pumping gas into the reaction kettle (4), and closing a fourth valve (54).
4. A method of dosing as claimed in claim 3, whereinBy setting different pressures by means of a pressure regulator (21), different amounts of CO are measured 2 And (3) quantitatively adding the gas with high precision.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710703286.3A CN107462693B (en) | 2017-08-16 | 2017-08-16 | High-precision CO 2 Quantitative adding instrument and quantitative adding method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710703286.3A CN107462693B (en) | 2017-08-16 | 2017-08-16 | High-precision CO 2 Quantitative adding instrument and quantitative adding method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107462693A CN107462693A (en) | 2017-12-12 |
| CN107462693B true CN107462693B (en) | 2023-06-30 |
Family
ID=60549816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710703286.3A Active CN107462693B (en) | 2017-08-16 | 2017-08-16 | High-precision CO 2 Quantitative adding instrument and quantitative adding method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107462693B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0796157A (en) * | 1993-09-28 | 1995-04-11 | Toray Dow Corning Silicone Co Ltd | Method for mixing gas into highly viscous liquid and device therefor |
| CN101932625A (en) * | 2009-01-14 | 2010-12-29 | 东洋橡胶工业株式会社 | Apparatus for producing rigid polyurethane foam by frothing method |
| CN202202852U (en) * | 2011-08-16 | 2012-04-25 | 中国石油集团工程设计有限责任公司 | Carbon dioxide ground injecting system |
| CN203703606U (en) * | 2014-02-13 | 2014-07-09 | 大庆市金拓石油机械制造有限公司 | Intelligent liquid carbon dioxide injection device |
| CN203742571U (en) * | 2014-03-25 | 2014-07-30 | 东北石油大学 | Experimental device used for manufacturing foam for oil displacement under different pressure conditions |
| CN204002737U (en) * | 2014-08-21 | 2014-12-10 | 陕西延长石油（集团）有限责任公司 | Hot CO 2displacement of reservoir oil ground installation |
| CN204140038U (en) * | 2014-09-30 | 2015-02-04 | 盘锦道博尔石油新技术开发有限公司 | A kind of gaseous carbon dioxide injects displacement of reservoir oil equipment continuously |
| CN105588922A (en) * | 2016-03-04 | 2016-05-18 | 中国石油大学(华东) | Device and method for testing solubility of CO2 and stability of foam in crude oil |
| CN205607605U (en) * | 2016-03-25 | 2016-09-28 | 中国华电科工集团有限公司 | Clean test bench that suppresses |
| CN207457229U (en) * | 2017-08-16 | 2018-06-05 | 北京拓普莱博油气田开发技术研究院 | A kind of high-precision CO2Quantitatively add instrument |
-
2017
- 2017-08-16 CN CN201710703286.3A patent/CN107462693B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0796157A (en) * | 1993-09-28 | 1995-04-11 | Toray Dow Corning Silicone Co Ltd | Method for mixing gas into highly viscous liquid and device therefor |
| CN101932625A (en) * | 2009-01-14 | 2010-12-29 | 东洋橡胶工业株式会社 | Apparatus for producing rigid polyurethane foam by frothing method |
| CN202202852U (en) * | 2011-08-16 | 2012-04-25 | 中国石油集团工程设计有限责任公司 | Carbon dioxide ground injecting system |
| CN203703606U (en) * | 2014-02-13 | 2014-07-09 | 大庆市金拓石油机械制造有限公司 | Intelligent liquid carbon dioxide injection device |
| CN203742571U (en) * | 2014-03-25 | 2014-07-30 | 东北石油大学 | Experimental device used for manufacturing foam for oil displacement under different pressure conditions |
| CN204002737U (en) * | 2014-08-21 | 2014-12-10 | 陕西延长石油（集团）有限责任公司 | Hot CO 2displacement of reservoir oil ground installation |
| CN204140038U (en) * | 2014-09-30 | 2015-02-04 | 盘锦道博尔石油新技术开发有限公司 | A kind of gaseous carbon dioxide injects displacement of reservoir oil equipment continuously |
| CN105588922A (en) * | 2016-03-04 | 2016-05-18 | 中国石油大学(华东) | Device and method for testing solubility of CO2 and stability of foam in crude oil |
| CN205607605U (en) * | 2016-03-25 | 2016-09-28 | 中国华电科工集团有限公司 | Clean test bench that suppresses |
| CN207457229U (en) * | 2017-08-16 | 2018-06-05 | 北京拓普莱博油气田开发技术研究院 | A kind of high-precision CO2Quantitatively add instrument |
Non-Patent Citations (1)
| Title |
|---|
| 李东东 等.二氧化碳在原油中的分子扩散系数和溶解度研究.油田化学.2009,第26卷(第04期),第405-407页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107462693A (en) | 2017-12-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104316449A (en) | Experimental method and experimental device for determinating volcanic gas-water relative permeability | |
| CN106525358B (en) | Valve pressure testing system and method | |
| CN113866069B (en) | Shale core permeability experimental device and method | |
| CN104215282B (en) | Equipment for measuring gas flow rate and the method that measuring gas flow rate is carried out using the device | |
| CN102706786A (en) | Dynamic shale pore pressure transmission tester | |
| CN113062722A (en) | Long core water-gas stable alternation and accurate volume oil displacement experimental method | |
| WO2016073454A4 (en) | Compressed gad filling method and system | |
| CN107462693B (en) | High-precision CO 2 Quantitative adding instrument and quantitative adding method thereof | |
| CN101435712B (en) | Device for measuring air volume flow | |
| CN109708896B (en) | Quantitative filling device and method for attitude control power system | |
| CN204330095U (en) | Supercritical CO 2flowmeter prover | |
| CN204419149U (en) | A kind of proppant and acid etching flow conductivity evaluating apparatus | |
| CN104568082A (en) | Supercritical CO2 flowmeter calibration device and calibration method thereof | |
| CN207457229U (en) | A kind of high-precision CO2Quantitatively add instrument | |
| CN112394157B (en) | Method for measuring shale adsorbed gas quantity and free gas quantity | |
| CN108825187B (en) | Reducing equipment, thin tube experiment system and method | |
| CN109781445B (en) | Method for determining flow area of thermostatic expansion valve | |
| CN203685151U (en) | Heating constant-temperature device | |
| CN103933781B (en) | A kind of water filter element life Online Transaction Processing | |
| CN206431009U (en) | Low-permeability oil deposit reservoir crude oil fluidity experimental provision | |
| CN110927359A (en) | Experimental test device and method for gas loss content in low-permeability porous medium coring process | |
| CN203259135U (en) | System for calibrating thickness of water film of road state detection sensor | |
| CN203971552U (en) | A kind of water filter element life Online Transaction Processing | |
| CN103364043B (en) | Brake system pressure volume test device and method | |
| CN204429046U (en) | Vinylacetylene gas purification apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |