CN211851816U - Gas injection well flow test instrument - Google Patents
Gas injection well flow test instrument Download PDFInfo
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- CN211851816U CN211851816U CN201922451813.3U CN201922451813U CN211851816U CN 211851816 U CN211851816 U CN 211851816U CN 201922451813 U CN201922451813 U CN 201922451813U CN 211851816 U CN211851816 U CN 211851816U
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- test
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- humidity
- injection well
- gas injection
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Abstract
The utility model relates to a gas injection well flow test instrument, which comprises a vacuum heat insulation bottle capable of isolating high temperature, wherein a battery bin and an instrument control circuit part are arranged in the vacuum heat insulation bottle; one end of the vacuum heat-insulating bottle is connected with a test nipple, a pressure test hole is formed between the test nipple and the vacuum heat-insulating bottle, and a pressure sensor is arranged in the pressure test hole; the testing short section comprises a thermal mass flow testing part and a humidity testing part, wherein the thermal mass flow testing part comprises a temperature measuring platinum resistor for detecting the gas temperature and a heating platinum resistor for heating and improving the gas temperature; the humidity testing part comprises a humidity sensor for testing the humidity of the gas; the pressure sensor, the temperature measuring platinum resistor, the heating platinum resistor and the humidity sensor are all electrically connected with the instrument control circuit part. The gas injection well flow testing instrument can test the underground dry humidity, and correct the gas flow testing value according to the dry humidity testing result, so that the accurate testing of the gas flow is realized.
Description
Technical Field
The utility model relates to an oil field test technical field especially relates to a gas injection well flow test instrument.
Background
In the flow test of gas injection well, generally adopt hot type gas mass flowmeter to test, but during the test, can find during the flow test, the flow indication size can receive the influence of the medium dry humidity of injected gas, and when the concrete expression is air humidity big, its flow indication is also big, and air humidity is hour, and the flow indication is little. If a more accurate indication of the flow rate is desired, a dry-wet test is necessary. In the testing process, if the temperature at the bottom of the well is higher, water vapor can appear at a position close to the liquid level at the bottom of the well, and the testing of the flow rate of the injected gas can be influenced after the water vapor is mixed with the injected gas.
Therefore, the inventor provides a gas injection well flow testing instrument by virtue of experience and practice of related industries for many years so as to overcome the defects in the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a gas injection well flow test instrument can test the dry humidity in the pit, rectifies gas flow test value according to the dry humidity test result, realizes gas flow's accurate test.
The utility model aims at realizing the purpose, and provides a gas injection well flow testing instrument, which comprises a vacuum heat insulation bottle capable of isolating high temperature, wherein a battery bin and an instrument control circuit part are arranged in the vacuum heat insulation bottle; one end of the vacuum insulation bottle is connected with a test short section, a pressure test hole is formed between the test short section and the vacuum insulation bottle, and a pressure sensor is arranged in the pressure test hole; the testing short section comprises a thermal mass flow testing part and a humidity testing part, wherein the thermal mass flow testing part comprises a temperature measuring platinum resistor for detecting the gas temperature and a heating platinum resistor for heating and improving the gas temperature; the humidity testing part comprises a humidity sensor for testing the humidity of the gas; the pressure sensor, the temperature measuring platinum resistor, the heating platinum resistor and the humidity sensor are all electrically connected with the instrument control circuit part.
The utility model discloses an in a preferred embodiment, still be provided with the magnetism that is used for instrument magnetism location test in the vacuum insulation bottle and decide the nipple joint, the magnetism decide the nipple joint with instrument control circuit portion electricity is connected.
The utility model discloses an in the preferred embodiment, the one end that is close to the test nipple joint in the vacuum insulation bottle still is provided with the heat absorption nipple joint, the heat absorption nipple joint is used for absorbing the heat of hookup location between test nipple joint and the vacuum insulation bottle.
The utility model discloses an in a preferred embodiment, the test nipple joint includes fretwork formula casing, the one end of fretwork formula casing through first connector connect in the one end of vacuum insulation bottle, the pressure test hole set up in on the lateral wall of first connector.
The utility model discloses an in a preferred embodiment, first fretwork portion and second fretwork portion are connected by near and far-end order on the first connector, temperature measurement platinum resistance with heating platinum resistance set up in the first fretwork portion, dry humidity transducer set up in the second fretwork portion.
In a preferred embodiment of the present invention, the hollow-out housing includes a second connector and a guiding head, the first connector and the second connector are connected by a plurality of first external ridges circumferentially spaced from each other, and the plurality of first external ridges form a first hollow portion; the second connector with lead to between the head through a plurality of along the circumference interval second outer arriss connect, it is a plurality of the second outer arris constitutes second fretwork portion.
In a preferred embodiment of the present invention, the free end of the guiding head is tapered.
In a preferred embodiment of the present invention, the first connector, the second connector and the guide head have the same outer diameter.
In a preferred embodiment of the present invention, the first connector and the second connector have an outer diameter smaller than the outer diameter of the first outer edge; the outer diameter of the second connector and the outer diameter of the guide head are smaller than the outer diameter of the second outer edge.
In a preferred embodiment of the present invention, the other end of the vacuum insulation bottle is provided with a rope cap structure.
From top to bottom, the utility model provides a gas injection well flow test instrument has following beneficial effect:
the utility model provides a gas injection well flow test instrument adopts hot type mass flow principle to carry out the flow test of injected gas, increases the humidity sensor on conventional hot type mass flow meter's basis, and the humidity sensor tests the humidity in the shaft bottom, can realize the measurement of gas humidity in the gas injection well, according to the functional relation of humidity to the flow influence, calibrates each layer gas injection flow according to the humidity test result, realizes the accurate test of gas flow; meanwhile, the water content of the underground liquid level can be judged through the measurement of the dryness and the humidity.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:
FIG. 1: do the utility model discloses a gas injection well flow test instrument's schematic diagram.
FIG. 2: do the utility model discloses a schematic diagram of fretwork formula casing of test nipple joint.
FIG. 3: is a right side view of fig. 2.
In the figure:
100. a gas injection well flow test instrument;
1. a vacuum insulation bottle; 11. a rope cap head structure;
2. a battery compartment;
3. an instrument control circuit section;
4. testing the short section;
41. measuring the temperature of a platinum resistor; 42. heating a platinum resistor; 43. a dry-to-wet sensor; 44. a first connector; 45. a first hollow-out section; 46. a second hollowed-out portion; 47. a second connector; 48. a guide head;
5. a pressure test hole;
6. magnetically fixing the short section;
7. and the heat absorption short section.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.
The specific embodiments of the present invention described herein are for the purpose of explanation only and should not be construed as limiting the invention in any way. Given the teachings of the present invention, the skilled person can conceive of any possible variants based on the invention, which should all be considered as belonging to the scope of the invention. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, indirect connections through intermediaries, and the like. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 3, the present invention provides a gas injection well flow rate measuring instrument 100, which includes a vacuum heat insulation bottle 1 capable of isolating high temperature (generally in a high temperature state in the well, prior art), a battery chamber 2 and an instrument control circuit portion 3 are disposed in the vacuum heat insulation bottle 1, the vacuum heat insulation bottle 1 isolates high temperature in the well, so that the gas injection well flow rate measuring instrument can work for a certain time at a higher temperature, and damage to electrical components is avoided; the battery compartment 2 is a power supply of the instrument, and the instrument control circuit part 3 is electrically connected with all electric devices underground, records detection data and controls the working states of all electric devices; one end of the vacuum insulation bottle 1 is connected with a test nipple 4, a pressure test hole 5 is arranged between the test nipple 4 and the vacuum insulation bottle 1, and a pressure sensor is arranged in the pressure test hole to realize pressure measurement of a test position; the test nipple 4 comprises a thermal mass flow testing part and a humidity testing part, wherein the thermal mass flow testing part comprises a temperature measurement platinum resistor 41 for detecting the gas temperature and a heating platinum resistor 42 for heating and increasing the gas temperature; the humidity and dryness testing part comprises a humidity and dryness sensor 43 for testing the humidity and dryness of the gas, and the humidity and dryness sensor 43 can adopt a common resistance type humidity and dryness sensor; the pressure sensor, the temperature measuring platinum resistor 41, the heating platinum resistor 42 and the dry-humidity sensor 43 are all electrically connected with the instrument control circuit part 3.
The basic principle of the Thermal Mass flow measuring part is to measure the gas flow by measuring the cooling effect when the gas flows through the heating element (the principle is the Thermal Mass Flowmeters, abbreviated as TMF), and two Thermal resistance elements are arranged in the Thermal Mass flow measuring part through which the gas passes, wherein one Thermal resistance element is used as a temperature measuring platinum resistor 41 for detecting the temperature, and the other Thermal resistance element is used as a heating platinum resistor 42 for a heater. The temperature sensing element, namely the platinum temperature measuring resistor 41 is used for detecting the temperature of the gas, and the heater, namely the platinum heating resistor 42, keeps a constant temperature difference between the temperature of the platinum heating resistor and the temperature of the gas to be detected by changing the current. The greater the cooling effect when the gas flow rate is increased, the greater the current that is required to maintain a constant temperature between the thermal resistors. The heat transfer is proportional to the gas mass flow rate, i.e., the supply current and the gas mass flow rate have a corresponding functional relationship to reflect the gas flow rate. This function relation is confirmed through calculation and experiment before the detection to input the total control portion (prior art) of well head, the utility model discloses an instrument control circuit portion 3 is connected with total control portion electricity, with the real-time control of the timely transmission of realization data and instrument action in the pit.
Since the gas flow test size is related to the humidity of the injected gas, which is embodied by the same medium and flow, the higher the humidity is, the larger the flow indication value is. The measured values (absolute values) of the gas flow rates injected at the downhole layers are calibrated by the dry humidity values of the downhole gas measured by the dry humidity sensor 43, and the calibration standards are calculated and determined by experiments before the measurement.
The utility model provides a gas injection well flow test instrument adopts hot type mass flow principle to carry out the flow test of injected gas, increases the humidity sensor on conventional hot type mass flow meter's basis, and the humidity sensor tests the humidity in the shaft bottom, can realize the measurement of gas humidity in the gas injection well, according to the functional relation of humidity to the flow influence, calibrates each layer gas injection flow according to the humidity test result, realizes the accurate test of gas flow; meanwhile, the water content of the underground liquid level can be judged through the measurement of the dryness and the humidity.
Further, as shown in fig. 1, a magnetic positioning short section 6 (prior art) is further arranged at one end, close to the test short section 4, in the vacuum insulation bottle 1, the magnetic positioning short section 6 is used for magnetic positioning test of an instrument, and the magnetic positioning short section 6 is electrically connected with the instrument control circuit part 3.
Further, as shown in fig. 1, a heat absorption nipple 7 (prior art) is further arranged in the vacuum insulation bottle 1, and the heat absorption nipple 7 is used for absorbing heat at a connection position between the test nipple 4 and the vacuum insulation bottle 1, so that the instrument can work for a long time at a high temperature.
Further, as shown in fig. 1, the testing nipple 4 includes a hollow casing, one end of the hollow casing is connected to one end of the vacuum insulation bottle 1 through a first connector 44, and the pressure testing hole 5 is formed in a side wall of the first connector 44. In the present embodiment, the first connector 44 is connected to the vacuum insulation bottle 1 by screw sealing. Cables of the temperature measuring platinum resistor 41, the heating platinum resistor 42 and the humidity sensor 43 are electrically connected to the instrument control circuit unit 3 through a first connector 44.
Further, as shown in fig. 1 and fig. 2, the first connection head 44 is connected to the first hollow portion 45 and the second hollow portion 46 sequentially from near to far, the temperature measuring platinum resistor 41 and the heating platinum resistor 42 are disposed in the first hollow portion 45, and the humidity sensor 43 is disposed in the second hollow portion 46. The casing of the test nipple 4 is designed in a hollow mode, so that injected gas can be in full contact with the temperature measurement platinum resistor 41, the heating platinum resistor 42 and the dry humidity sensor 43, and measurement data are more real and accurate.
In the present embodiment, as shown in fig. 1, 2 and 3, the hollow-out housing includes a second connector 47 and a guide head 48, the first connector 44 and the second connector 47 are connected by a plurality of first outer edges spaced along the circumferential direction, and the plurality of first outer edges form a first hollow-out portion 45; the second connecting head 47 and the guide head 48 are connected by a plurality of second outer edges spaced in the circumferential direction, and the plurality of second outer edges form a second hollow portion 46. In a specific embodiment of the present invention, the number of the first outer ribs and the second outer ribs is 6, which are evenly spaced around the circumference.
Furthermore, the free end of the guide head 48 is arranged in a conical shape, so that the instrument is more smooth in the well descending process, and a good guide effect is achieved.
Further, for convenience of manufacturing, the first connector 44, the second connector 47 and the guide head 48 are generally arranged in the same outer diameter.
In the present embodiment, the outer diameter of the first connector 44 and the second connector 47 is smaller than the outer diameter of the first outer edge, and the first outer edge can effectively protect the temperature measuring platinum resistor 41 and the heating platinum resistor 42 inside the first outer edge from collision and damage; the outer diameter of the second connector 47 and the outer diameter of the guide head 48 are smaller than those of the second outer edge, and the second outer edge can effectively protect the dry-humidity sensor 43 on the inner side of the second outer edge from collision and damage.
Further, as shown in fig. 1, the other end of the vacuum insulation bottle 1 is provided with a cap head structure 11 to facilitate the connection of the instrument to the upper equipment.
From top to bottom, the utility model provides a gas injection well flow test instrument has following beneficial effect:
the utility model provides a gas injection well flow test instrument adopts hot type mass flow principle to carry out the flow test of injected gas, increases the humidity sensor on conventional hot type mass flow meter's basis, and the humidity sensor tests the humidity in the shaft bottom, can realize the measurement of gas humidity in the gas injection well, according to the functional relation of humidity to the flow influence, calibrates each layer gas injection flow according to the humidity test result, realizes the accurate test of gas flow; meanwhile, the water content of the underground liquid level can be judged through the measurement of the dryness and the humidity.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.
Claims (10)
1. A gas injection well flow test instrument is characterized by comprising a vacuum heat insulation bottle capable of isolating high temperature, wherein a battery bin and an instrument control circuit part are arranged in the vacuum heat insulation bottle; one end of the vacuum insulation bottle is connected with a test short section, a pressure test hole is formed between the test short section and the vacuum insulation bottle, and a pressure sensor is arranged in the pressure test hole; the testing short section comprises a thermal mass flow testing part and a humidity testing part, wherein the thermal mass flow testing part comprises a temperature measuring platinum resistor for detecting the gas temperature and a heating platinum resistor for heating and improving the gas temperature; the humidity testing part comprises a humidity sensor for testing the humidity of the gas; the pressure sensor, the temperature measuring platinum resistor, the heating platinum resistor and the humidity sensor are all electrically connected with the instrument control circuit part.
2. The gas injection well flow test instrument of claim 1, wherein a magnetic short for magnetic positioning test of the instrument is further disposed in the vacuum insulation bottle, and the magnetic short is electrically connected to the instrument control circuit.
3. The gas injection well flow tester of claim 2, wherein a heat absorbing nipple is further provided at an end of the vacuum insulation bottle adjacent to the test nipple, the heat absorbing nipple being adapted to absorb heat from a connection location between the test nipple and the vacuum insulation bottle.
4. The gas injection well flow test instrument of claim 3, wherein the test nipple comprises a hollowed-out housing, one end of the hollowed-out housing is connected to one end of the vacuum insulation bottle through a first connector, and the pressure test hole is disposed on a side wall of the first connector.
5. The gas injection well flow test instrument of claim 4, wherein the first connector is connected to a first hollow-out portion and a second hollow-out portion in a proximal-to-distal sequence, the temperature platinum resistor and the heating platinum resistor are disposed in the first hollow-out portion, and the humidity sensor is disposed in the second hollow-out portion.
6. The gas injection well flow test instrument of claim 5, wherein the hollowed-out housing comprises a second connector and a guide head, the first connector and the second connector are connected by a plurality of circumferentially spaced first external edges, and the plurality of first external edges form a first hollowed-out portion; the second connector with lead to between the head through a plurality of along the circumference interval second outer arriss connect, it is a plurality of the second outer arris constitutes second fretwork portion.
7. The gas injection well flow test instrument of claim 6, wherein the free end of the guide head is tapered.
8. The gas injection well flow test instrument of claim 6, wherein the outer diameters of the first connector, the second connector, and the guide head are the same.
9. The gas injection well flow test instrument of claim 6 or 8, wherein the first connector and the second connector have outer diameter dimensions that are less than the outer diameter dimensions of the first outer ridge; the outer diameter of the second connector and the outer diameter of the guide head are smaller than the outer diameter of the second outer edge.
10. The gas injection well flow test instrument of claim 4, wherein the other end of the vacuum insulation bottle is provided with a rope cap structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922451813.3U CN211851816U (en) | 2019-12-30 | 2019-12-30 | Gas injection well flow test instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922451813.3U CN211851816U (en) | 2019-12-30 | 2019-12-30 | Gas injection well flow test instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211851816U true CN211851816U (en) | 2020-11-03 |
Family
ID=73208368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922451813.3U Active CN211851816U (en) | 2019-12-30 | 2019-12-30 | Gas injection well flow test instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211851816U (en) |
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2019
- 2019-12-30 CN CN201922451813.3U patent/CN211851816U/en active Active
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