CN203719818U - Fluid seepage environment pressure conduction time measuring device - Google Patents
Fluid seepage environment pressure conduction time measuring device Download PDFInfo
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- CN203719818U CN203719818U CN201420071949.6U CN201420071949U CN203719818U CN 203719818 U CN203719818 U CN 203719818U CN 201420071949 U CN201420071949 U CN 201420071949U CN 203719818 U CN203719818 U CN 203719818U
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- pressure
- seepage environment
- fluid
- inlet end
- processing system
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- 239000012530 fluid Substances 0.000 title claims abstract description 47
- 238000012545 processing Methods 0.000 claims abstract description 28
- 238000005259 measurement Methods 0.000 claims abstract description 26
- 239000004576 sand Substances 0.000 claims description 26
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 description 8
- 238000004088 simulation Methods 0.000 description 5
- 229920006395 saturated elastomer Polymers 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012067 mathematical method Methods 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000019491 signal transduction Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a fluid seepage environment pressure conduction time measuring device. The measuring device comprises a seepage environment simulating device, a pressure control device, pressure sensors and a data acquiring and processing system. The pressure control device is communicated with the inlet end of the seepage environment simulating device for providing pressure for the flow of fluid. The outlet end of the seepage environment simulating device is communicated with a receiving container. The pressure sensors are arranged at the inlet end and the outlet end of the seepage environment simulating device separately. The pressure sensors are further connected with the data acquiring and processing system. According to pressure signals transmitted by the pressure sensors, the variation relationship between the pressure difference between the inlet end and the outlet end of the seepage environment simulating device and the time is obtained by the data acquiring and processing system. The measuring device of the utility model has advantages, such as accuracy, quickness, automation, high intelligence, etc. According to the utility model, the technical blank in the fluid seepage environment pressure conduction completed time measurement is filled, and a scientific and effective indoor real-time measuring device is provided.
Description
Technical field
The utility model relates to the measurement mechanism of pressure conduction time in a kind of fluid seepage environment, belongs to hydrodynamic pressure transfer law field in Porous Media medium.
Background technology
Under pressure, there is seepage flow motion in fluid, treat that pressure is elevated to certain value P in rock
1after, remove pressure P
1, pressure starts to transmit, and fluid is from flow state, to finally static.After the certain hour t of interval, in same one end, again pressurize, when fluid is again during setting in motion, record pressure P now
2.If in fill out sand tube, hydrodynamic pressure transmission is complete, P
2be the mobile emergent pressure of propelling fluid in fill out sand tube.If in fill out sand tube hydrodynamic pressure do not transmit complete, P
2with the synergistic effect of residual pressure formation before, cannot measure the mobile emergent pressure of propelling fluid in fill out sand tube.Therefore, measure fluid necessary at seepage environment conduction time critical value t, but the research of this problem lacks scientific and effective experimental technique always.
Utility model content
The purpose of this utility model is to provide the measurement mechanism of pressure conduction time in a kind of fluid seepage environment.
First the utility model provides the measurement mechanism of pressure conduction time in a kind of fluid seepage environment, and it comprises seepage environment analogue means, pressure control device, pressure transducer and data acquisition processing system;
Described pressure control device is connected with the inlet end of described seepage environment analogue means, for fluid flows, provides pressure; The endpiece of described seepage environment analogue means is connected with a bearing container;
Described pressure transducer is located at respectively inlet end and the endpiece of described seepage environment analogue means; Described pressure transducer is also connected with described data acquisition processing system, according to the pressure signal of described pressure transducer transmission, described data acquisition processing system draws the inlet end of described seepage environment analogue means and the pressure differential of endpiece and the variation relation between the time.
In above-mentioned measurement mechanism, described seepage environment analogue means specifically can be a fill out sand tube, can simulate the mobile motion of fluid in the reservoir of different permeability sizes.
In above-mentioned measurement mechanism, described pressure control device comprises a constant-flux pump and is attached thereto logical feed liquor container, the endpiece of described feed liquor container is connected with the inlet end of described fill out sand tube, described constant-flux pump provides pressure for described seepage environment analogue means, controls the size of fluid flow pressure.
In above-mentioned measurement mechanism, the inlet end of described fill out sand tube connects a horizontal valve.
While utilizing measurement mechanism of the present utility model to measure the method for pressure conduction time in fluid seepage environment, can carry out according to the method comprising the steps:
(1) with the saturated described seepage environment analogue means of resident fluid;
(2) utilize described pressure control device to described seepage environment analogue means displacement working fluid;
(3), when the endpiece of described seepage environment analogue means flows out described working fluid, close described pressure control device; Simultaneously, start described data acquisition processing system, described data acquisition processing system gathers the pressure differential of inlet end and the endpiece of described seepage environment analogue means, according to gathered pressure differential and time data and then obtain described pressure differential relation over time, time when obtaining described pressure differential and stablizing, be time of described working fluid pressure conduction in described seepage environment analogue means;
(3), when the endpiece of described seepage environment analogue means flows out described working fluid, close described pressure control device; Meanwhile, start described data acquisition processing system, described data acquisition processing system gathers the pressure differential of inlet end and the endpiece of described seepage environment analogue means, and then obtains described pressure differential relation over time; According to variation relation, the time when obtaining described pressure differential and stablizing, be time of described working fluid pressure conduction in described seepage environment analogue means.
In above-mentioned method, in step (1), the object of saturated described seepage environment analogue means is that the active porosity that guarantees described seepage environment analogue means is all filled by resident fluid, thereby makes the described seepage environment analogue means inlet end fluid energy of flow be passed to continuously endpiece fluid; Can carry out as follows: to described seepage environment analogue means constant flow, pass into resident fluid, when described seepage environment analogue means endpiece rate of flow of fluid equates with its inlet end flow velocity, realize saturated to described seepage environment analogue means.
In above-mentioned method, described data acquisition processing system according to described pressure differential over time relation obtain Exponential Fitting curve, the absolute value of described Exponential Fitting curve derivative is that the point of 0.01 o'clock is described working fluid pressure in described seepage environment analogue means and transmits the complete time, so just can be before pressure stability, look-ahead working fluid pressure in seepage environment transmits the complete time.
In above-mentioned method, when Measuring Time long enough, described data acquisition processing system can, according to the data of described pressure transducer transmission, directly judge the time point of pressure stability, thereby show that pressure transmits the complete time.
Pressure conduction time and method in the fluid seepage environment that the utility model provides, realized the automatically collecting of pressure data, and the intellectuality of mathematical method is preferred, thereby realize calculating pressure conduction time before seepage environment simulation system pressure stability; Measuring method of the present utility model has accurately, quick, robotization, intelligent degree be compared with advantages of higher.The utility model has been filled up the technological gap of the complete time of pressure conduction in fluid seepage environment of measuring, and a kind of scientific and effective indoor real-time measurement apparatus and method are provided.
Accompanying drawing explanation
Fig. 1 is the structural representation of the measurement mechanism of pressure conduction time in the utility model fluid seepage environment.
Fig. 2 is the schematic diagram in measurement mechanism when work of pressure conduction time in the utility model fluid seepage environment.
Fig. 3 is pressure and the time match curve that utilizes the utility model measurement mechanism to obtain.
In figure, each mark is as follows: 1 fill out sand tube, 2 constant-flux pumps, 3 feed liquor containers, 4 pressure transducers, 5 data acquisition processing systems, 6 bearing containers, 7 horizontal valves.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further, but the utility model is not limited to following examples.
The measurement mechanism of pressure conduction time in embodiment 1, fluid seepage environment
As shown in Figure 1, in the fluid seepage environment that the utility model provides, the measurement mechanism of pressure conduction time comprises a fill out sand tube 1, constant-flux pump 2, feed liquor container 3, pressure transducer 4, data acquisition processing system 5 and bearing container 6; Wherein, the outlet of feed liquor container 3 is connected with the inlet end of fill out sand tube 1, and feed liquor container 3 by constant-flux pump 2 to displacement test fluid in fill out sand tube 1.The endpiece of fill out sand tube 1 is connected with bearing container 6, for accepting the Experimental Flowing Object flowing out from fill out sand tube 1.Inlet end at fill out sand tube 1 is provided with a horizontal valve 7, for disconnecting being communicated with between fill out sand tube 1 and feed liquor container 3.
In the utility model, at inlet end place and the endpiece place of fill out sand tube 1, a pressure transducer 4 is set respectively, for the pressure at difference the real time measure fill out sand tube 1 two ends.And pressure transducer 4 is connected with data acquisition processing system 5, pressure transducer 4 is transferred to data acquisition processing system 5 by the pressure signal of measurement, according to this pressure signal, data acquisition processing system 5 draws the pressure differential at fill out sand tube 1 two ends and the variation relation between the time, according to this variation relation, time when obtaining pressure differential and stablizing, be the pressure conduction time in fluid seepage environment; When Measuring Time long enough, data acquisition processing system 5 also can, according to the data of pressure transducer 4 transmission, directly judge the time point of pressure stability, thereby show that pressure transmits the complete time.
In the utility model fluid seepage environment, as shown in Figure 2, control pressurer system provides seepage environment simulation system required pressure to the principle of work of the measurement mechanism of pressure conduction time, and under pressure reduction, working fluid flows in seepage environment simulation system.The pressure that pressure capsule system detects seepage environment simulation system two ends changes, and by signal transduction system, data is passed to data acquisition processing system.Data acquisition processing system obtains, after pressure temporal evolution relation, simulating pressure relation over time.When the absolute value of the derivative of matched curve is very little, now curve approaches level, can think that pressure transmits in error range complete.Time that accordingly can look-ahead pressure stability.
The measurement of pressure conduction time in embodiment 2, fluid seepage environment
Utilize the measurement mechanism gaging pressure conduction time of pressure conduction time in the fluid seepage environment in embodiment 1.Concrete steps are as follows:
Utilize the reservoir that fill out sand tube 1 simulation permeability is 41.7mD, the Bohai Sea SZ36-1 local water of take is Experimental Flowing Object.
(1) with the saturated fill out sand tube 1 of Bohai Sea SZ36-1 local water of preparation, local water formula is as table 1;
Table 1 simulated formation water formula (the required amount of medicament of 1L solution)
(2) utilize constant-flux pump 2 to continue to the interior displacement of fill out sand tube 1 Bohai Sea SZ36-1 local water, make liquid feeding end pressure rise to 0.085MPa;
(3) constant-flux pump termination of pumping, closes the horizontal valve 7 of fill out sand tube 1 inlet end;
(4), when closing horizontal valve 7, log-on data acquisition and processing system 5, utilizes data acquisition processing system 5, records fill out sand tube 1 pressure at two ends data over time.When pressure stability, data acquisition processing system 5 stops gathering automatically, measures the complete time of pressure conduction, utilizes free Model fitting to go out pressure temporal evolution function, and the point that is 0.01 according to curve derivative absolute value calculates the pressure stability time.
In the present embodiment, the resulting curve of data acquisition processing system 5 as shown in Figure 3, fitting precision R
2=98.0%.
As can be seen from Figure 3, the fitting precision of pressure and time is higher.Generally, when simulating the slope absolute value of pressure time curve and approach 0.01, think that pressure transmits complete, now the corresponding time is the pressure stability time t calculating
sc, solve t
sc=73min.The pressure stability time t that measurement of comparison obtains
sm=72min, can find out, the mathematical model of data acquisition processing system is accurately, reliably.
Utilize the measurement mechanism of pressure conduction time in the utility model fluid seepage environment, can in fluid seepage environment, conduct the complete time by gaging pressure.
Claims (4)
1. the measurement mechanism of pressure conduction time in fluid seepage environment, is characterized in that:
Described measurement mechanism comprises seepage environment analogue means, pressure control device, pressure transducer and data acquisition processing system;
Described pressure control device is connected with the inlet end of described seepage environment analogue means, for fluid flows, provides pressure; The endpiece of described seepage environment analogue means is connected with a bearing container;
Described pressure transducer is located at respectively inlet end and the endpiece of described seepage environment analogue means; Described pressure transducer is also connected with described data acquisition processing system, according to the pressure signal of described pressure transducer transmission, described data acquisition processing system draws the inlet end of described seepage environment analogue means and the pressure differential of endpiece and the variation relation between the time.
2. measurement mechanism according to claim 1, is characterized in that: described seepage environment analogue means is a fill out sand tube.
3. measurement mechanism according to claim 2, is characterized in that: described pressure control device comprises a constant-flux pump and be attached thereto logical feed liquor container, and the endpiece of described feed liquor container is connected with the inlet end of described fill out sand tube.
4. measurement mechanism according to claim 3, is characterized in that: the inlet end of described fill out sand tube connects a horizontal valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420071949.6U CN203719818U (en) | 2014-02-19 | 2014-02-19 | Fluid seepage environment pressure conduction time measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420071949.6U CN203719818U (en) | 2014-02-19 | 2014-02-19 | Fluid seepage environment pressure conduction time measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203719818U true CN203719818U (en) | 2014-07-16 |
Family
ID=51158957
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420071949.6U Expired - Lifetime CN203719818U (en) | 2014-02-19 | 2014-02-19 | Fluid seepage environment pressure conduction time measuring device |
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|---|---|
| CN (1) | CN203719818U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808448A (en) * | 2014-02-19 | 2014-05-21 | 中国海洋石油总公司 | Measuring apparatus and method of pressure transmission time in fluid percolation environment |
| CN105738028A (en) * | 2016-02-01 | 2016-07-06 | 北京理工大学 | Measurement method for fluid pressure in non-intrusive pipeline |
-
2014
- 2014-02-19 CN CN201420071949.6U patent/CN203719818U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808448A (en) * | 2014-02-19 | 2014-05-21 | 中国海洋石油总公司 | Measuring apparatus and method of pressure transmission time in fluid percolation environment |
| CN103808448B (en) * | 2014-02-19 | 2016-02-10 | 中国海洋石油总公司 | The measuring method of pressure conduction time in a kind of fluid neuron network environment |
| CN105738028A (en) * | 2016-02-01 | 2016-07-06 | 北京理工大学 | Measurement method for fluid pressure in non-intrusive pipeline |
| CN105738028B (en) * | 2016-02-01 | 2018-10-02 | 北京理工大学 | A kind of non-intervention type pipe fluid pressure measurement method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC RESEARCH INSTITUTE Co.,Ltd. Patentee after: CHINA NATIONAL OFFSHORE OIL Corp. Co-patentee after: China University of Petroleum (Beijing) Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. Co-patentee before: China University of Petroleum (Beijing) |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200114 Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC RESEARCH INSTITUTE Co.,Ltd. Patentee after: CHINA NATIONAL OFFSHORE OIL Corp. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC RESEARCH INSTITUTE Co.,Ltd. Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. Co-patentee before: China University of Petroleum (Beijing) |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140716 |
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| CX01 | Expiry of patent term |