CN113218575A - Failure early warning system for pressure sensor of logging device - Google Patents
Failure early warning system for pressure sensor of logging device Download PDFInfo
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- CN113218575A CN113218575A CN202110714270.9A CN202110714270A CN113218575A CN 113218575 A CN113218575 A CN 113218575A CN 202110714270 A CN202110714270 A CN 202110714270A CN 113218575 A CN113218575 A CN 113218575A
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- 239000012530 fluid Substances 0.000 claims abstract description 65
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 230000001105 regulatory Effects 0.000 claims description 36
- 238000009530 blood pressure measurement Methods 0.000 claims description 18
- 230000001276 controlling effect Effects 0.000 claims description 4
- 229910004682 ON-OFF Inorganic materials 0.000 claims description 3
- 230000003068 static Effects 0.000 description 6
- 239000003921 oil Substances 0.000 description 5
- 239000000295 fuel oil Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 101700027419 NS2 Proteins 0.000 description 2
- 101710017884 Segment-8 Proteins 0.000 description 2
- WYTGDNHDOZPMIW-UHOFOFEASA-O Serpentine Natural products O=C(OC)C=1[C@@H]2[C@@H]([C@@H](C)OC=1)C[n+]1c(c3[nH]c4c(c3cc1)cccc4)C2 WYTGDNHDOZPMIW-UHOFOFEASA-O 0.000 description 2
- 238000010793 Steam injection (oil industry) Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000003247 decreasing Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 101700009395 orf8 Proteins 0.000 description 2
- 230000001681 protective Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000000149 penetrating Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L27/00—Testing or calibrating of apparatus for measuring fluid pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
Abstract
The invention relates to a failure early warning system for a pressure sensor of a logging device, which can meet the use of normal detection through a detection structure arranged at the tail end of the logging device, ensure that the detected data is the data of fluid pressure at the tail end of the logging device, and can adjust the fluid environment of the pressure sensor at any time according to the detection requirement so as to obtain the working state of the pressure sensor and further know the failure state of the pressure sensor. The pressure sensor of the logging device can be monitored on line in real time through a simple structure and a simple system, so that the pressure sensor is ensured to operate stably and accurately, and the accuracy of data measured by the pressure sensor is ensured.
Description
Technical Field
The invention relates to the field of logging equipment, in particular to a system for early warning the failure of a pressure sensor in a logging device.
Background
In the process of detecting and developing resources such as petroleum, natural gas and the like, a drill bit or a probe is required to measure pressures at different depths so as to acquire pressure conditions at different depths and finally know information such as states, reserves and the like of the resources at different depths of the well.
With the continuous increase of the depth, particularly for seabed exploratory wells or drilling wells, the pressure is continuously increased and even reaches more than 30 MPa; and is accompanied by high temperatures. For example, in the development of oil fields, it is necessary to achieve oil displacement by injection techniques (e.g., water injection, steam injection, thin oil injection, etc.). In the case of heavy oil or heavy oil, the viscosity of the heavy oil or heavy oil can be reduced by using supersaturated high-temperature high-pressure steam. During steam injection, the injected steam forms a mixed fluid with the original material in the well, which greatly increases the temperature of the fluid.
Under such high temperature and high pressure conditions, the pressure sensor works in such a very harsh environment, which is likely to cause damage to the pressure sensor, and may have a great influence on the accuracy and the lifetime of the pressure sensor. However, since it is very important to know the pressure data in the well, it is very important to improve the oil production, adjust the amount of the injected material, and improve the efficiency and safety of the construction.
Therefore, a system capable of providing early warning for the working state of the pressure sensor and before failure is developed, so that the damaged information of the pressure sensor can be obtained in time, the accuracy of the data detected by the pressure sensor can be known as soon as possible, the reliability of the detection result is ensured, and the system is of great significance for the safe and effective operation of the logging device.
Disclosure of Invention
In order to solve the technical problems, the invention provides a failure early warning system of a pressure sensor for a logging device, which comprises a control device, the pressure sensor, a pressure measurement channel and a regulating valve, wherein the control device is connected with the pressure sensor and the regulating valve, can acquire data measured by the pressure sensor and can send instructions to the regulating valve to control the regulating valve; wherein the pressure measurement channel comprises a first port disposed at an end portion of the logging device and communicating with an exterior of the end portion of the logging device, and a second port disposed at a location between the first port and a wellhead of the logging device, the pressure measurement channel between the first port and the second port forming a fluid flow path; wherein the fluid flow passage comprises an inlet section, a neck section having a cross-sectional area less than that of the inlet section, and an outlet section having a cross-sectional area greater than that of the neck section; the pressure sensor is disposed at the necked-down section, and the regulating valve is disposed between the pressure sensor and the second port.
Further, during logging, the fluid pressure at the first port is greater than the fluid pressure at the second port.
Further, the inlet, neck and outlet sections are circular in cross-section.
Further, the radius of the cross section of the outlet section is larger than the radius of the cross section of the inlet section.
Further, the radius of the cross section of the necking section is 25% -50% of the radius of the cross section of the inlet section, and the radius of the cross section of the outlet section is 150% -300% of the radius of the cross section of the inlet section.
Further, the regulating valve is arranged at the necking section.
Furthermore, the regulating valve is a ball valve or a plunger valve, and the opening degree of the regulating valve can be adjusted.
Further, the failure early warning system still includes the stop valve, the stop valve sets up second port department on the pressure measurement passageway, the stop valve is connected to controlling means, the stop valve is used for controlling the circulation or the shutoff of pressure measurement passageway in second port department.
Further, the control device comprises a storage module and an analysis module, wherein a pressure sensor failure detection model is stored in the storage module in advance, the analysis module compares the obtained data measured by the pressure sensor with the opening data of the regulating valve and the on-off state of the stop valve with the data in the pressure sensor failure detection model, and when the difference value between the data measured by the pressure sensor and the data in the pressure sensor failure detection model exceeds a first threshold value, the analysis module sends out a pressure sensor failure warning.
The implementation of the invention has the following beneficial effects: according to the failure early warning system for the pressure sensor of the logging device, the detection structure arranged at the tail end of the logging device can meet the use requirement of normal detection, the detected data is guaranteed to be the data of the fluid pressure at the tail end of the logging device, and meanwhile, the fluid environment where the pressure sensor is located can be adjusted at any time according to the detection requirement to obtain the working state of the pressure sensor, so that the failure state of the pressure sensor can be known. The pressure sensor of the logging device can be monitored on line in real time through a simple structure and a simple system, so that the pressure sensor is ensured to operate stably and accurately, and the accuracy of data measured by the pressure sensor is ensured.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a failure warning system for a pressure sensor of a logging device of the present invention.
Reference numerals: 1. a logging device; 2. a control device; 3. a pressure sensor; 4. a pressure measurement channel; 5. a first port; 6. a second port; 7. an inlet section; 8. a necking section; 9. an outlet section; 10. adjusting a valve; 11. and a stop valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
In order to solve the above-mentioned problems, the present invention provides a failure early warning system for a pressure sensor of a logging device, which is configured to be located in the logging device and can be located at any set position of the logging device according to a position to be detected by the pressure sensor, as shown in fig. 1. In this embodiment, the failure warning system is arranged at the end of the logging device, i.e. the end of the probe or the drill bit, which is the deepest position of the logging device in operation, so that the pressure sensor 3 obtains the pressure condition at the foremost end of the logging device in operation.
As shown in fig. 1, the failure warning system includes a control device 2, a pressure sensor 3, a pressure measurement channel 4, and a regulating valve 10, wherein the control device is connected, in particular electrically connected, to the pressure sensor 3 and the regulating valve 10. Since the current oil or gas wells are deeper and deeper, the arrangement and arrangement of the cables is particularly complicated by the wired electrical connection, so that in the present embodiment, the control device 2 can be electrically connected with the pressure sensor 3 and the regulating valve 10 in a wireless manner, that is, the control device 2 can wirelessly acquire the pressure data detected by the pressure sensor 3 and can wirelessly send commands to the regulating valve 10.
The regulating valve 10 may be selected as a ball valve or a plunger valve, which enables the regulating valve 10 to reliably operate in a high-temperature and high-pressure fluid environment downhole. The regulating valve is a valve with adjustable opening, that is, the regulating valve 10 can be adjusted to any opening between 0% and 100%.
As shown in fig. 1, the pressure measurement channel 4 is a fluid channel disposed in the end of the logging device 1, the pressure measurement channel 4 includes a first port 5 and a second port 6, the first port 5 is disposed in the end of the logging device 1 and communicates with the outside of the end of the logging device 1, and fluid in the well can enter the pressure measurement channel 4 through the first port 5; the second port 6 is arranged in a position between the first port 5 and the wellhead of the upper part of the logging device 1, and the pressure measurement channel 4 between the first port 5 and the second port 6 forms a fluid flow path. During logging, the fluid pressure is greater deeper, and thus the fluid pressure at the first port 5 is typically greater than the fluid pressure at the second port 6.
Further, as the well logging device is mostly assembled as a long serpentine device by connecting a section of pipe sections, the second port 6 can be arranged only on the endmost section of the well logging device, that is, the first port 5 is located at the end of the endmost section of the well logging device 1, and the second port 6 is located at the other end of the endmost section of the well logging device 1, such arrangement will result in the fluid passage between the first port 5 and the second port 6 not being long enough, and the pressure difference between the fluids at the first port 5 and the second port 6 will not be large when the well logging device 1 is in operation, but will not affect the operation of the failure warning system of the present invention.
The second port 6 may alternatively be located closer to the wellhead of the logging device 1, in particular on an operating platform at the surface or sea, which results in a long length between the first port 5 and the second port 6, so that the pressure difference between the fluids at the first port 5 and the second port 6 will be relatively large during operation of the logging device 1. For such an arrangement of the second port 6, the pressure measuring channel 4 may alternatively be arranged as a separate component with respect to the probe or the drill bit of the logging device 1, such that the pressure measuring channel 4 is located outside the tubular body of the tubular logging device 1 as shown in fig. 1, where usually a protective tubular body is also arranged, the tubular body of the pressure measuring channel 4 being located inside the protective tubular body.
The failure early warning system is used for constructing a system or a structure, not only can enable the pressure sensor 3 to measure the static pressure of the fluid at the tail end of the logging device 1, but also can control and change the fluid environment measured by the pressure sensor 3 according to the detection requirement, namely, the detection condition of the pressure sensor 3 on the changed fluid pressure is detected by adjusting the fluid environment and the fluid pressure of the pressure sensor 3 on line, and further whether the pressure sensor 3 is in a normal state or a failure state is judged.
Thus, the present invention provides a channel control structure in the fluid channel, which channel control structure comprises an inlet section 7, a neck section 8 and an outlet section 9, as shown in fig. 1, the inlet section 7 being in fluid communication with the first port 5, the outlet section 9 being in fluid communication with the second port 6, the neck section 8 being located between the inlet section 7 and the outlet section 9, the arrangement being such that well fluid can flow in via the first port 5 and then be discharged from the second port 6 through the inlet section 7, the neck section 8 and the outlet section 9. Wherein a pressure sensor 3 is arranged at the neck segment 8 for detecting the pressure of the fluid in the neck segment 8.
In order to be able to reliably detect the pressure of the fluid at the first port 5 by the pressure sensor 3, a control valve 10 is provided in particular, which control valve 10 is arranged between the pressure sensor 3 and the second port 6, in the present exemplary embodiment the control valve 10 preferably also being arranged on the neck section 8. When the pressure sensor 3 is required to detect the pressure of the liquid at the first port 5 to obtain the pressure of the liquid in the external well at the end of the logging device 1, the control device 2 controls the regulating valve 10 to be closed, so that the fluid in the passage between the pressure sensor 3 and the first port 5 does not flow, and the fluid pressure at the first port 5 is the same as the fluid pressure in the neck section 8 where the pressure sensor 3 is located. The pressure sensor 3 accurately measures the pressure of the external fluid at the end of the logging device 1.
In order to implement the failure warning system, the pressure of the fluid environment in which the pressure sensor 3 is located can be adjusted, and in particular the inlet section 7, the neck section 8 and the outlet section 9 are configured. Wherein the cross-sectional area of the neck section 8 is smaller than the cross-sectional area of the inlet section 7 and the cross-sectional area of the outlet section 9 is larger than the cross-sectional area of the neck section 8. With such an arrangement, when the fluid enters the outlet section 9 from the neck section 8, due to the increase of the flow area of the passage of the fluid, that is, the increase of the volume of the flow passage of the outlet section 9, according to the bernoulli fluid formula, the flow speed of the fluid in the neck section 8 is increased, the static pressure of the fluid in the neck section 8 is decreased, and the dynamic pressure is increased, so that the pressure sensor 3 serves as a sensor for measuring the static pressure of the fluid in the fluid environment, and the static pressure of the fluid in the fluid environment facing the sensor is decreased, thereby changing the pressure condition of the object measured by the pressure sensor 3.
In the present embodiment, in particular, the inlet section 7, the neck section 8 and the outlet section 9 are all circular in cross section, i.e. the inlet section 7, the neck section 8 and the outlet section 9 are all tubular fluid passages.
In order to enable a greater static pressure drop of the fluid in the neck section 8 and a faster flow velocity of the fluid, it is furthermore provided that the radius of the cross section of the outlet section 9 is larger than the radius of the cross section of the inlet section 7. In this way, the fluid passes from the inlet section 7 to the outlet section 9, and the channel volume of the outlet section 9 is larger than that of the inlet section 7, so that the fluid flow speed is higher when the fluid flows through the neck section 8, and the static pressure of the fluid in the neck section 8 is greatly reduced. This enables a greater and wider range of adjustments to be made to the fluid environment described by the pressure sensor 3.
Further, the radius of the cross section of the neck section 8 is 25% -50% of the radius of the cross section of the inlet section 7, and the radius of the cross section of the outlet section 9 is 150% -300% of the radius of the cross section of the inlet section 7.
For the adjustment of the fluid flow in the neck section 8, the adjustment during operation is effected by adjusting the opening of the regulating valve 10, in addition to the flow area size of the inlet section 7, the neck section 8 and the outlet section 9. The different opening of the regulating valve 10 results in a different flow rate of the fluid through said neck section 8, which enables a more accurate and controllable regulation of the pressure condition of the object measured by the pressure sensor 3.
As shown in fig. 1, the failure warning system further includes a stop valve 11, the stop valve 11 is disposed at the second port 6 on the pressure measurement channel 4, the stop valve 11 is connected to the control device 2, and the stop valve 11 is used for controlling the flow or the shutoff of the pressure measurement channel 4 at the second port 6. This is particularly advantageous for the way in which the first port 5 and the second port 6 are arranged on the same section of the shaft penetrating device 4. When the measurement of the shallower position is completed, the control device 2 controls to close the regulating valve 10 and the stop valve 11, whereby the fluid pressure at the shallower position is conserved between the regulating valve 10 and the stop valve 11. As the depth of the logging device increases, the fluid pressure at a greater depth increases, a pressure difference is formed between the front end of the high-pressure regulating valve 10 and the rear end of the low-pressure regulating valve 10, and when the opening degree of the regulating valve 10 is opened or adjusted, the fluid pressure in the constriction section 8 may jump or fluctuate, which is sufficient for the excitation of the pressure sensor 3 even if the process is short. When the measurement at this position is completed, the control device 2 controls the regulating valve 10 and the stop valve 11 to be closed, so that the fluid pressure at this position is maintained between the regulating valve 10 and the stop valve 11. This enables the measurement process to be repeated continuously during the submergence of the logging device 1.
Further, the control device 2 includes a storage module and an analysis module, which are not shown in the figure, the storage module stores a pressure sensor failure detection model in advance, the analysis module compares the obtained data measured by the pressure sensor 3 and the opening data of the regulating valve 10, the on-off state of the stop valve 11 and the data in the pressure sensor failure detection model, and when the difference between the data measured by the pressure sensor 3 and the data in the pressure sensor failure detection model exceeds a predetermined first threshold, the analysis module sends a pressure sensor 3 failure warning.
The implementation of the invention has the following beneficial effects: according to the failure early warning system for the pressure sensor of the logging device, the detection structure arranged at the tail end of the logging device can meet the use requirement of normal detection, the detected data is guaranteed to be the data of the fluid pressure at the tail end of the logging device, and meanwhile, the fluid environment where the pressure sensor is located can be adjusted at any time according to the detection requirement to obtain the working state of the pressure sensor, so that the failure state of the pressure sensor can be known. The pressure sensor of the logging device can be monitored on line in real time through a simple structure and a simple system, so that the pressure sensor is ensured to operate stably and accurately, and the accuracy of data measured by the pressure sensor is ensured.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (9)
1. A failure early warning system of a pressure sensor for a logging device comprises a control device, the pressure sensor, a pressure measurement channel and a regulating valve, wherein the control device is connected with the pressure sensor and the regulating valve, can acquire data measured by the pressure sensor and can send instructions to the regulating valve to control the regulating valve; wherein the pressure measurement channel comprises a first port disposed at an end portion of the logging device and communicating with an exterior of the end portion of the logging device, and a second port disposed at a location between the first port and a wellhead of the logging device, the pressure measurement channel between the first port and the second port forming a fluid flow path; wherein the fluid flow passage comprises an inlet section, a neck section having a cross-sectional area less than that of the inlet section, and an outlet section having a cross-sectional area greater than that of the neck section; the pressure sensor is disposed at the necked-down section, and the regulating valve is disposed between the pressure sensor and the second port.
2. The failure warning system of claim 1, wherein during logging, a fluid pressure at the first port is greater than a fluid pressure at the second port.
3. The failure warning system of claim 1, wherein a radius of a cross-section of the outlet section is greater than a radius of a cross-section of the inlet section.
4. The failure warning system of claim 3, wherein the inlet, neck and outlet sections are circular in cross-section.
5. The failure warning system according to any one of claims 1 to 4, wherein the radius of the cross-section of the neck section is 25% -50% of the radius of the cross-section of the inlet section, and the radius of the cross-section of the outlet section is 150% -300% of the radius of the cross-section of the inlet section.
6. The failure warning system of claim 1, wherein the regulator valve is disposed in the neck section.
7. The failure early warning system of claim 6, wherein the regulating valve is a ball valve or a plunger valve, and the regulating valve is a valve with an adjustable opening degree.
8. The failure warning system according to any one of claims 1 to 7, further comprising a shut-off valve provided at the second port on the pressure measurement channel, the shut-off valve being connected to a control device for controlling the passage or shut-off of the pressure measurement channel at the second port.
9. The failure early warning system according to any one of claims 1 to 8, wherein the control device comprises a storage module and an analysis module, the storage module is pre-stored with a pressure sensor failure detection model, the analysis module compares the obtained data measured by the pressure sensor and the opening data of the regulating valve, the on-off state of the stop valve with the data in the pressure sensor failure detection model, and when the difference between the data measured by the pressure sensor and the data in the pressure sensor failure detection model exceeds a first threshold value, the analysis module sends out a pressure sensor failure warning.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110714270.9A CN113218575B (en) | 2021-06-26 | 2021-06-26 | Failure early warning system for pressure sensor of logging device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110714270.9A CN113218575B (en) | 2021-06-26 | 2021-06-26 | Failure early warning system for pressure sensor of logging device |
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| CN113218575A true CN113218575A (en) | 2021-08-06 |
| CN113218575B CN113218575B (en) | 2022-05-20 |
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| US5515336A (en) * | 1994-08-17 | 1996-05-07 | Halliburton Company | MWD surface signal detector having bypass loop acoustic detection means |
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| US20110214498A1 (en) * | 2010-03-02 | 2011-09-08 | Fadhel Rezgui | Flow restriction insert for differential pressure measurement |
| CN202441367U (en) * | 2012-03-13 | 2012-09-19 | 东北石油大学 | Novel well test pressure meter |
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| CN111693209A (en) * | 2020-05-20 | 2020-09-22 | 中海油田服务股份有限公司 | Test device for annulus pressure sensor of pressure measurement while drilling instrument |
| CN111912468A (en) * | 2020-09-07 | 2020-11-10 | 唐山市丰润区展望自动化设备有限公司 | Novel underground non-elevation pressure flowmeter |
| CN112647896A (en) * | 2020-12-21 | 2021-04-13 | 中海油田服务股份有限公司 | Valve system for measuring flow of underground multiphase fluid |
-
2021
- 2021-06-26 CN CN202110714270.9A patent/CN113218575B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5515336A (en) * | 1994-08-17 | 1996-05-07 | Halliburton Company | MWD surface signal detector having bypass loop acoustic detection means |
| RU2158359C2 (en) * | 1997-03-04 | 2000-10-27 | Аминев Марат Хуснуллович | Wellhead pressure controller |
| US20110214498A1 (en) * | 2010-03-02 | 2011-09-08 | Fadhel Rezgui | Flow restriction insert for differential pressure measurement |
| CN202441367U (en) * | 2012-03-13 | 2012-09-19 | 东北石油大学 | Novel well test pressure meter |
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| CN113218575B (en) | 2022-05-20 |
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