CN202372429U - Oil-gas interface tensiometer - Google Patents
Oil-gas interface tensiometer Download PDFInfo
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- CN202372429U CN202372429U CN2011205408790U CN201120540879U CN202372429U CN 202372429 U CN202372429 U CN 202372429U CN 2011205408790 U CN2011205408790 U CN 2011205408790U CN 201120540879 U CN201120540879 U CN 201120540879U CN 202372429 U CN202372429 U CN 202372429U
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Abstract
The utility model provides an oil-gas interface tensiometer, which is used for the testing experiments of oil-gas interface tension and minimum miscible pressure of oil and gas under high temperature and high pressure in oil recovery. The oil-gas interface tensiometer comprises a sample inlet, a hanging drop chamber and hanging drop tubes which are connected between the sample inlet and the hanging drop chamber, wherein the hanging drop tubes comprise a hanging drop tube with the inside diameter of 0.1 mm, a hanging drop tube with the inside diameter of 0.25 mm and the hanging drop tube with the inside diameter of 0.5 mm which are connected in parallel between the sample inlet and the hanging drop chamber.
Description
Technical field
The utility model relates to oil and improves recovery ratio high pressure property experiment median surface tension force and the minimum miscible pressure technical field of measurement and test of oil gas, in particular to a kind of oil gas interface tensiometer.
Background technology
In recent years, along with various countries' rapid development of economy, CO2 reduction of greenhouse gas discharge and the problem of burying are become the focus of growing interest both at home and abroad, unremitting effort is just constantly being done for reduction of greenhouse gas discharge by China.Utilize CO2 to carry out the miscible-phase displacement, can bury CO2 on the one hand; Can improve oil recovery on the other hand.CO2-formation oil system mixed phase means that oil gas interface tension force is zero.So, accurately and apace obtain this value and become the key that solves many technical barriers.
At present, adopting maximum method of testings is sessile drop method, and the measuring method of promptly using for reference oil water interfacial tension is measured the tension force of oil gas interface.Usually use the hanging drop pipe of 0.6mm internal diameter to be connected in the hanging drop chamber in the measurement of oil water interfacial tension; The hanging drop chamber is generally cylindric; The side is provided with view window; Oil such as light oil to be tested or heavy oil gets in the hanging drop chamber through the hanging drop pipe, and the hanging drop chamber is provided with the import that water quality gets into, and hanging drop is indoor to be established measurement component such as pressure transducer and measure tension force numerical value.In addition, light source is established and camera is used to illuminate and observation is taken pictures hanging drop in the outdoor two ends of hanging drop.
Yet, find that in carrying out oil gas interface tension test process under the certain condition of temperature, along with the rising hanging drop of pressure reduces gradually, interfacial tension reduces gradually.But along with the rising of pressure, hanging drop is little after to a certain degree at tubule mouth place, and it is easier to come off and can't measures, and also gives the prediction great errors of minimum miscible pressure.Traditional hanging drop pipe standard configuration of dispatching from the factory is internal diameter 0.6mm, only satisfy the measurement of oil water interfacial tension, and in the test of CO2-formation oil system, CO2 can reach supercriticality, has higher density and solubleness, causes hanging drop compressed less and come off easily.So, adopt the hanging drop pipe that uses in the measurement of traditional oil water interfacial tension, be difficult under test interface tension force near oil gas mixed phase state.In addition; During the test of high temperature high pressure oil aerosphere surface tension value; Owing to use the hanging drop pipe of traditional caliber; Minimum interfacial tension that can measure and minimum miscible pressure far can not reach actual minimum interfacial tension and minimum miscible pressure, and the minimum miscible pressure of oil gas of carrying out the prediction that the mapping of coordinate line obtains according to the minimum interfacial tension that measures and minimum miscible pressure is bigger with actual minimum miscible pressure error.
The utility model content
The utility model provides the method for testing of a kind of oil gas interface tensiometer and oil gas interface tension value, to solve because too small and can't be stabilized in the difficult problem that traditional hanging drop pipe (internal diameter 0.6mm) is tested near hanging drop under the oil gas mixed phase state.The utility model can also solve the minimum miscible pressure of oil gas and test coarse problem.
The utility model proposes a kind of oil gas interface tensiometer; The high temperature high pressure oil aerosphere surface tension and the minimum miscible pressure test experiments of oil gas that are used for oil recovery; The oil gas interface tensiometer comprises: injection port, hanging drop chamber and be connected injection port and the hanging drop chamber between the hanging drop pipe, said hanging drop pipe comprises: the internal diameter that is connected in parallel between injection port and the hanging drop chamber is the hanging drop pipe of 0.1mm, the hanging drop pipe of 0.25mm and the hanging drop pipe of 0.5mm.
Further, the hanging drop pipe of the hanging drop pipe of the hanging drop pipe of said 0.1mm, 0.25mm and 0.5mm is connected injection port through valve respectively.
Further, said hanging drop is provided with pressure transducer in the chamber, and said hanging drop chamber is cylindric; The side of said hanging drop chamber is provided with view window, and hanging drop is outdoor, and an end is established light source; The other end is established camera, and said light source and said camera all are positioned on radially projecting's face of said hanging drop chamber.
Further, said oil gas interface tensiometer also comprises: hanging drop chamber link, connect the hanging drop chamber, and said hanging drop chamber link is provided with the cavity of hanging drop pipe of hanging drop pipe and the 0.5mm of the hanging drop pipe that holds said 0.1mm, 0.25mm; The hanging drop tube fixing device; Be tightly connected with said hanging drop chamber link; Said hanging drop tube fixing device is provided with the cavity of hanging drop pipe of hanging drop pipe and the 0.5mm of the hanging drop pipe that holds said 0.1mm, 0.25mm; And the end of said hanging drop tube fixing device is provided with O-ring seal, and said O-ring seal seals the cavity of said hanging drop chamber and the cavity of said hanging drop tube fixing device, and said each hanging drop pipe passes and is fastened on the said O-ring seal from said O-ring seal; Said valve is arranged on each hanging drop pipe and is positioned at the outside of said O-ring seal.
Further, said oil gas interface tensiometer also comprises: discoid sealed screw, said sealed screw are tightened on the hanging drop tube fixing device and are positioned at outside the said O-ring seal, and said each hanging drop pipe passes from sealed screw and is fastened on the sealed screw.
Because it is the hanging drop pipe of 0.1mm, the hanging drop pipe of 0.25mm and the hanging drop pipe of 0.5mm that the utility model has adopted internal diameter; The hanging drop pipe of the 0.6mm that the internal diameter of these three kinds of hanging drop pipes uses in all measuring less than oil water interfacial tension uses in three kinds of hanging drop pipes in the utility model any just can solve because too small and can't be stabilized in the difficult problem that traditional hanging drop pipe (internal diameter 0.6mm) is tested near hanging drop under the oil gas mixed phase state.Use these three kinds of hanging drop pipes if switch, just can measure littler hanging drop.In addition, the utility model can be in control and the actual comparatively approaching numerical value of minimum miscible pressure through using above-mentioned thinner hanging drop, has improved measuring accuracy.
Description of drawings
Fig. 1 is the sectional structure synoptic diagram according to the oil gas interface tensiometer master apparent direction of the utility model embodiment;
Fig. 2 is for overlooking direction sectional structure synoptic diagram according to the utility model embodiment oil gas interface tensiometer.
The drawing reference numeral explanation:
4, hanging drop 10, hanging drop chamber 11, view window 20, light source 30, camera
40, the hanging drop pipe of the hanging drop pipe 43 of hanging drop chamber link 41,0.1mm, 0.25mm
45, the hanging drop pipe 47 of 0.5mm, hanging drop tube side are to regulating mouth 50, hanging drop tube fixing device
51, O-ring seal 53, holding screw 55, pinch grip 57, valve
59, sealed screw
Embodiment
Understand for technical characterictic, purpose and effect to the utility model have more clearly, contrast the embodiment of description of drawings the utility model at present.
Fig. 1 and Fig. 2 for according to the oil gas interface tensiometer master apparent direction of the utility model embodiment, overlook the sectional structure synoptic diagram of direction; As shown in the figure; The utility model proposes a kind of method of testing of oil gas interface tension value; The high temperature high pressure oil aerosphere surface tension and the minimum miscible pressure test experiments of oil gas that are used for oil recovery, the method for testing employing hanging drop pipe of said oil gas interface tension value is connected and carries out the test of hanging drop interfacial tension between injection port and the hanging drop chamber.
Said hanging drop pipe comprises: the internal diameter that is connected in parallel between injection port (not shown) and the hanging drop chamber 10 is the hanging drop pipe 41 of 0.1mm, the hanging drop pipe 43 of internal diameter 0.25mm and the hanging drop pipe 45 of internal diameter 0.5mm, and said method of testing is selected for use one of them to test in above-mentioned three kinds of hanging drop pipes or in above-mentioned three kinds of hanging drop pipes, switch to be used wherein two or three to test.The method of testing of the utility model can be carried out test experiments according to the selected hanging drop caliber of oil gas character.For example, can select for use the hanging drop pipe 45 of 0.5mm to test, to light oil or at higher temperature or the oil product under the pressure (oil) to viscous crude; Because hanging drop is less, adopt the hanging drop pipe of 0.5mm can not accomplish test, can select internal diameter for use is that the hanging drop pipe 41 of 0.1mm or the hanging drop pipe 43 of internal diameter 0.25mm are tested; Certainly, the hanging drop pipe is thick more, and the hanging drop of test is also big more; The hanging drop pipe is thin more; Also more little, the less hanging drop of hanging drop of test, the suitable more internal diameter that uses is tested as the hanging drop pipe 41 of 0.1mm or the hanging drop pipe 43 of internal diameter 0.25mm., under different pressures and temperature, can also switch and use two or three in three kinds of hanging drop pipes to same oil to test.
Wherein, Internal diameter is that the hanging drop pipe 45 of hanging drop pipe 43 and internal diameter 0.5mm of hanging drop pipe 41, the internal diameter 0.25mm of 0.1mm is not the hanging drop pipe that uses in the test of traditional oil water interfacial tension value; But the utility model can make the hanging drop pipe that uses in the chromatograph; These three kinds of hanging drop pipes can be buied from market, and for example, the abundant generation in Beijing converges into the IFT-TUBE-1 type hanging drop pipe that Metal Processing Factory produces.The utility model is used for the test of oil gas interface tension value with the hanging drop pipe that uses in the stratographic analysis, can realize that can't test less hanging drop to the hanging drop pipe of traditional 0.6mm accurately tests, and has extended the test specification of sessile drop method.
Because it is the hanging drop pipe of 0.1mm, the hanging drop pipe of 0.25mm and the hanging drop pipe of 0.5mm that the utility model has adopted internal diameter; The hanging drop pipe of the 0.6mm that the internal diameter of these three kinds of hanging drop pipes uses in all measuring less than oil water interfacial tension uses in three kinds of hanging drop pipes in the utility model any just can solve because too small and can't be stabilized in the difficult problem that traditional hanging drop pipe (internal diameter 0.6mm) is tested near hanging drop under the oil gas mixed phase state.Use these three kinds of hanging drop pipes if switch, just can measure littler hanging drop.In addition, the utility model can be in control and the actual comparatively approaching numerical value of minimum miscible pressure through using above-mentioned thinner hanging drop, has improved measuring accuracy.
The utility model uses the oil gas interface tensiometer; The high temperature high pressure oil aerosphere surface tension and the minimum miscible pressure test experiments of oil gas that are used for oil recovery; As depicted in figs. 1 and 2; The oil gas interface tensiometer comprises: injection port (not shown), hanging drop chamber 10 and be connected injection port and the hanging drop chamber between the hanging drop pipe, said hanging drop pipe comprises: the internal diameter that is connected in parallel between injection port and the hanging drop chamber is the hanging drop pipe 41 of 0.1mm, the hanging drop pipe 43 of internal diameter 0.25mm and the hanging drop pipe 45 of internal diameter 0.5mm.
Further, said oil gas interface tensiometer also comprises: hanging drop chamber link 40, connect hanging drop chamber 10, and said hanging drop chamber link 10 is a sleeve-like, is provided with the cavity of hanging drop pipe of hanging drop pipe and the 0.5mm of the hanging drop pipe that holds said 0.1mm, 0.25mm; Hanging drop tube fixing device 50; Be tightly connected with said hanging drop chamber link 40; Play the effect of support; Said hanging drop tube fixing device 50 is provided with the cavity of hanging drop pipe of hanging drop pipe and the 0.5mm of the hanging drop pipe that holds said 0.1mm, 0.25mm; And the end of said hanging drop tube fixing device 50 is provided with O-ring seal 51, the cavity of the said hanging drop of said O-ring seal 51 sealings chamber 10 and the cavity of said hanging drop tube fixing device 40, and said each hanging drop pipe passes and is fastened to from said O-ring seal 51 and sealed screw 59 on said O-ring seal 51 and the sealed screw 59.Hanging drop chamber sealed screw 59 for discoid, plays the effect of end cap and sealing, is used for sealing the hanging drop chamber.Holding screw 53, with each hanging drop seal of tube on hanging drop chamber sealed screw 59.Hanging drop chamber sealed screw pinch grip 55 is used for tightening hanging drop chamber sealed screw 59.In addition; The hanging drop tube side is a sleeve-like part to regulating mouth 47; Improving thread bush is connected on outside the hanging drop tube fixing device 50; Be used to be fastenedly connected hanging drop tube fixing device 50 and hanging drop tube fixing device 40, can drive that three kinds of fixing hanging drop pipes rotate relative to hanging drop chamber 10 on hanging drop tube fixing device 50 and O-ring seal 51 and the O-ring seal 51, the end of regulating three kinds of hanging drop pipes when testing vertically downward.
Further, the hanging drop pipe of the hanging drop pipe of said 0.1mm, the hanging drop pipe of 0.25mm and 0.5mm is connected injection port through valve respectively, can switch easily.Said valve 57 is arranged on each hanging drop pipe and is positioned at the outside of said O-ring seal 51, and control is connected with injection port.
Further, be provided with gas feed (being equivalent to the water quality import of oil water interfacial tension appearance) in the said hanging drop chamber 10, the pressure transducer (not shown); Said hanging drop chamber 10 is cylindric being supported on the worktable; The side of said hanging drop chamber is provided with view window 11, and outside the hanging drop chamber 10, an end is established light source 20; The other end is established camera 30, and said light source 20 all is positioned on radially projecting's face of said hanging drop chamber 10 with said camera 30.Light source and camera are used to illuminate and observation is taken pictures hanging drop.
The oil gas interface tensiometer of the utility model is identical substantially on the structures such as inner structure, hanging drop chamber link and O-ring seal of hanging drop chamber with the structure of existing oil water interfacial tension appearance; The key distinction of the oil gas interface tensiometer of the utility model and the structure of existing oil water interfacial tension appearance is: existing oil water interfacial tension appearance only adopts a kind of hanging drop pipe to pass O-ring seal 51, advanced hanging drop chamber link 40, extend in the hanging drop chamber 10, and the hanging drop pipe adopts the internal diameter of 0.6mm; In the utility model, it is that the hanging drop pipe 41 of 0.1mm, the hanging drop pipe 43 of internal diameter 0.25mm and the hanging drop pipe 45 of internal diameter 0.5mm pass O-ring seal 51 respectively through hanging drop chamber link 40 that the oil gas interface tensiometer adopts internal diameter, extend into jointly in the hanging drop chamber 10.
The utility model is the hanging drop bore that adopts less than existing oil water interfacial tension appearance of the hanging drop bore that adopts of oil gas interface tensiometer not only; Use in three kinds of hanging drop pipes in the utility model any just can solve because too small and can't be stabilized in the difficult problem that traditional hanging drop pipe (internal diameter 0.6mm) is tested near hanging drop under the oil gas mixed phase state; And three kinds of hanging drop pipes of the utility model can switch; Can change the hanging drop pipe fast according to test status; Compare with a hanging drop pipe only is set in the hanging drop chamber 10, saved the time of changing hanging drop pipe, conversion equipment connection, improved testing efficiency.The oil gas interface tensiometer of the utility model and the structure of existing oil water interfacial tension appearance other structures except the setting of above-mentioned hanging drop pipe and caliber are identical or similar, thereby the oil gas interface tensiometer of the utility model can be with reference to the structure of existing oil water interfacial tension appearance.
Oil gas interface tensiometer operating process:
(1) hanging drop chamber link 40 and hanging drop tube fixing device 50 are connected;
(2) O-ring seal 51 is put into hanging drop tube fixing device 50;
(3) the hanging drop pipe with three kinds of internal diameters penetrates in the hanging drop chamber sealed screw 59, and with hanging drop pipe holding screw 53 it is tightened on the sealed screw of hanging drop chamber;
(4) the hanging drop pipe of three kinds of internal diameters is passed hanging drop chamber link 40 and be linked in the hanging drop chamber 10;
(5) the hanging drop chamber sealed screw of screwing, and three valves 57 are installed on three kinds of hanging drop pipes that are exposed at hanging drop pipe holding screw outside;
(6) regulate the hanging drop tube side to, make the hanging drop pipe bend vertically downward;
(7) according to the selected hanging drop caliber of oil gas character, carry out test experiments
The interfacial tension test process
(1) hanging drop chamber link and hanging drop tube fixing device are connected;
(2) O-ring seal is put into the hanging drop tube fixing device;
(3) the hanging drop pipe with three kinds of internal diameters penetrates in the sealed screw of hanging drop chamber, and with hanging drop pipe holding screw it is tightened on the sealed screw of hanging drop chamber;
(4) the hanging drop pipe of three kinds of internal diameters is passed hanging drop chamber link 40 and be linked in the hanging drop chamber 10;
(5) the hanging drop chamber sealed screw of screwing, and three valves 57 are installed on three kinds of hanging drop pipes that are exposed at hanging drop pipe holding screw outside;
(6) regulate the hanging drop tube side to, make the hanging drop pipe bend vertically downward;
(7) according to the earlier selected 0.5mm hanging drop caliber of oil gas character, carry out test experiments, see table 1.
Table 1 pressure and interfacial tension relation curve
Can find out that from table 1 during with 0.5mm hanging drop pipe, after pressure reached 20MPa, after interfacial tension was 1.9mN/m, the 0.5mm pipeline can't be measured too small hanging drop.At this moment; Change the device of the utility model, and to adopt internal diameter wherein be that 0.25mm hanging drop pipeline continued is tested, can obtain littler interfacial tension; 1.2mN/m, 0.7mN/m, 0.12mN/m; After the device of the utility model was described, it can measure littler drop, obtained lower interfacial tension value.
Thereby; Can use the hanging drop pipe of 0.5mm to carry out the test of hanging drop interfacial tension earlier; When the hanging drop pipe that uses 0.5mm can reach test request, the size that is to say hanging drop was also within the test specification of the hanging drop pipe of 0.5mm, and the size of hanging drop also is unlikely to when the hanging drop pipe of 0.5mm comes off in other words; Obtain test result, finish test; When the hanging drop pipe that uses 0.5mm can't be measured hanging drop, promptly hanging drop was too small, in the time of can coming off from the hanging drop pipe of 0.5mm, switched the hanging drop pipe that uses 0.25mm and carried out the test of hanging drop interfacial tension.The rest may be inferred, further, when the hanging drop pipe that uses 0.5mm can reach test request, obtains test result, finishes test; When the hanging drop pipe that uses 0.25mm can't be measured hanging drop, switch the hanging drop pipe that uses 0.1mm and carry out the test of hanging drop interfacial tension.
Can find out, use above-mentioned method of testing, oil that can test different types can be selected and accurately measures.
The method of testing of the oil gas interface tension value of the utility model not only can be used for the mensuration of the high temperature high pressure oil aerosphere surface tension value of oil recovery, can also test the minimum miscible pressure of oil gas.
Minimum miscible pressure test
(1) hanging drop chamber link and hanging drop tube fixing device are connected;
(2) O-ring seal is put into the hanging drop tube fixing device;
(3) the hanging drop pipe with three kinds of internal diameters penetrates in the sealed screw of hanging drop chamber, and with hanging drop pipe holding screw it is tightened on the sealed screw of hanging drop chamber;
(4) the hanging drop pipe of three kinds of internal diameters is passed hanging drop chamber link 40 and be linked in the hanging drop chamber 10;
(5) the hanging drop chamber sealed screw of screwing, and three valves 57 are installed on three kinds of hanging drop pipes that are exposed at hanging drop pipe holding screw outside;
(6) regulate the hanging drop tube side to, make the hanging drop pipe bend vertically downward;
(7) according to the earlier selected 0.5mm hanging drop caliber of oil gas character, carry out test experiments, see table 2.
Table 2 pressure and interfacial tension relation curve
Can find out from table 2, when utilizing interfacial tension test oil gas minimum miscible pressure, if adopt the hanging drop pipe of 0.5mm; Minimum can only measure the A point (17MPa, 2.5mN/m), A point (17MPa; 2.5mN/m) corresponding 2.5mN/m is the preliminary surveying value of the minimum miscible pressure of oil gas; At this moment, the line of the test curve that the coordinate points that is in control according to the hanging drop that adopts 0.5mm forms, the value of this curve and coordinate axis intersection is 23.5MPa; Promptly the minimum miscible pressure of the oil gas of prediction is 23.5MPa, more than 17MPa.Even adopt the hanging drop pipe of 0.5mm that so big error is arranged, if adopt the hanging drop pipe of the 0.6mm of existing oil water interfacial tension appearance, error can be bigger.This shows; The pacing value was much larger than 0 o'clock (the preliminary surveying value was greater than more than the 0.5mN/m usually) originally; The minimum miscible pressure of the oil gas of the prediction that obtains according to mapping can have than mistake with the minimum miscible pressure of the oil gas of reality; When the pacing value was greater than 0.5mN/m especially originally, the error of the minimum miscible pressure of the oil gas of prediction can be clearly.
Adopt the 0.1mm hanging drop pipe of the utility model; When continuing to measure 20.2MPa, the minimum interfacial tension that records is 0.09, and this value is the measured value once more of the minimum miscible pressure of oil gas; Approaching zero (according to test request; Can think and be approaching zero smaller or equal to 0.2mN/m or 0.1mN/m), promptly may be defined as miscible pressure, the minimum miscible pressure of just actual oil gas.The minimum miscible pressure of oil gas and former method (obtain the preliminary surveying value earlier, intersect the predicted value that obtains according to test curve and the coordinate axis again) measured value that use 0.1mm hanging drop pipe to record differ 3.3MPa.More than explanation; The utility model can accurately be confirmed the minimum miscible pressure of oil gas, can directly obtain the minimum miscible pressure of oil gas, need not to obtain predicted value indirectly through mapping again; Solved the difficult problem that prior art can not directly not record the minimum miscible pressure value of oil gas, effect is obvious.
Therefore; After the hanging drop pipe that uses 0.5mm carries out the test of hanging drop interfacial tension and obtains the preliminary surveying value of the minimum miscible pressure of oil gas; When the pairing minimum interfacial tension of said preliminary surveying value during, switch the hanging drop pipe that uses 0.1mm and carry out the test of hanging drop interfacial tension to obtain the measured value once more of the minimum miscible pressure of oil gas greater than 0.2mN/m.According to the oil product denseness; After the hanging drop pipe that uses 0.5mm carries out the test of hanging drop interfacial tension and obtains the preliminary surveying value of the minimum miscible pressure of oil gas; If in the time of can't measuring owing to the hanging drop pipe of the bigger use of hanging drop 0.1mm; The hanging drop pipe that also can consider to use 0.25mm to be obtaining the measured value once more of the minimum miscible pressure of oil gas, up to the pairing minimum interfacial tension of measured value once more smaller or equal to 0.2mN/m or 0.1mN/m, to reach or near the minimum miscible pressure of oil gas.
The free conversion equipment of oil gas interface tensiometer hanging drop pipe of the utility model; Can solve near oil gas mixed phase state hanging drop too small and can't be stabilized in the difficult problem of hanging drop pipe; And can measure the interfacial tension between light crude and gas; Overcome classical calculation in the too small and imponderable problem of hanging drop, can realize changing caliber as required, satisfied the test request of different oil gas samples.This device is saved the test duration, improves measuring accuracy, for the large-scale application of oil gas miscible-phase displacement mode in the oil field provides reliable data refer.
The method of testing of the oil gas interface tension value of the utility model not only can be used for the mensuration of the high temperature high pressure oil aerosphere surface tension value of oil recovery, can also test the minimum miscible pressure of oil gas.Compare with existing method, the utlity model has following advantage:
1. the interfacial tension when measuring the nearly mixed phase of oil gas exactly;
2. can measure lightweight oil aerosphere surface tension;
3. it is too small and can't measure a difficult problem to hanging drop to have solved classical interfacial tension hanging drop computing method;
4. improve measuring accuracy, shortened the time of measuring.
The above is merely the schematic embodiment of the utility model, is not in order to limit the scope of the utility model.For each ingredient of the utility model can make up under the condition of not conflicting each other; Any those skilled in the art; Equivalent variations of under the prerequisite of design that does not break away from the utility model and principle, having done and modification all should belong to the scope that the utility model is protected.
Claims (5)
1. oil gas interface tensiometer; The high temperature high pressure oil aerosphere surface tension and the minimum miscible pressure test experiments of oil gas that are used for oil recovery; The oil gas interface tensiometer comprises: injection port, hanging drop chamber and be connected injection port and the hanging drop chamber between the hanging drop pipe; It is characterized in that said hanging drop pipe comprises: the internal diameter that is connected in parallel between injection port and the hanging drop chamber is the hanging drop pipe of 0.1mm, the hanging drop pipe of 0.25mm and the hanging drop pipe of 0.5mm.
2. oil gas interface tensiometer as claimed in claim 1 is characterized in that, the hanging drop pipe of the hanging drop pipe of said 0.1mm, the hanging drop pipe of 0.25mm and 0.5mm is connected injection port through valve respectively.
3. oil gas interface tensiometer as claimed in claim 1 is characterized in that, said hanging drop is provided with pressure transducer in the chamber; Said hanging drop chamber is cylindric; The side of said hanging drop chamber is provided with view window, and hanging drop is outdoor, and an end is established light source; The other end is established camera, and said light source and said camera all are positioned on radially projecting's face of said hanging drop chamber.
4. oil gas interface tensiometer as claimed in claim 2; It is characterized in that; Said oil gas interface tensiometer also comprises: hanging drop chamber link, connect the hanging drop chamber, and said hanging drop chamber link is provided with the cavity of hanging drop pipe of hanging drop pipe and the 0.5mm of the hanging drop pipe that holds said 0.1mm, 0.25mm; The hanging drop tube fixing device; Be tightly connected with said hanging drop chamber link; Said hanging drop tube fixing device is provided with the cavity of hanging drop pipe of hanging drop pipe and the 0.5mm of the hanging drop pipe that holds said 0.1mm, 0.25mm; And the end of said hanging drop tube fixing device is provided with O-ring seal, and said O-ring seal seals the cavity of said hanging drop chamber and the cavity of said hanging drop tube fixing device, and said each hanging drop pipe passes and is fastened on the said O-ring seal from said O-ring seal; Said valve is arranged on each hanging drop pipe and is positioned at the outside of said O-ring seal.
5. oil gas interface tensiometer as claimed in claim 4; It is characterized in that; Said oil gas interface tensiometer also comprises: discoid sealed screw; Said sealed screw is tightened on the hanging drop tube fixing device and is positioned at outside the said O-ring seal, and said each hanging drop pipe passes from sealed screw and is fastened on the sealed screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205408790U CN202372429U (en) | 2011-12-21 | 2011-12-21 | Oil-gas interface tensiometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205408790U CN202372429U (en) | 2011-12-21 | 2011-12-21 | Oil-gas interface tensiometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202372429U true CN202372429U (en) | 2012-08-08 |
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ID=46596126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205408790U Expired - Fee Related CN202372429U (en) | 2011-12-21 | 2011-12-21 | Oil-gas interface tensiometer |
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| Country | Link |
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| CN (1) | CN202372429U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539290A (en) * | 2011-12-21 | 2012-07-04 | 中国石油天然气股份有限公司 | Oil gas interface tensiometer and test method of oil gas interfacial tension value |
| CN104155217A (en) * | 2014-07-17 | 2014-11-19 | 天津大学 | High-temperature and high-pressure interfacial tension measurement device and method |
-
2011
- 2011-12-21 CN CN2011205408790U patent/CN202372429U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539290A (en) * | 2011-12-21 | 2012-07-04 | 中国石油天然气股份有限公司 | Oil gas interface tensiometer and test method of oil gas interfacial tension value |
| CN104155217A (en) * | 2014-07-17 | 2014-11-19 | 天津大学 | High-temperature and high-pressure interfacial tension measurement device and method |
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