CN212837778U - Impedance type over-annulus water detector - Google Patents
Impedance type over-annulus water detector Download PDFInfo
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- CN212837778U CN212837778U CN202020911071.8U CN202020911071U CN212837778U CN 212837778 U CN212837778 U CN 212837778U CN 202020911071 U CN202020911071 U CN 202020911071U CN 212837778 U CN212837778 U CN 212837778U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 claims abstract description 21
- 239000012530 fluid Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 5
- 238000005070 sampling Methods 0.000 claims description 2
- 241000921268 Selago corymbosa Species 0.000 claims 3
- 239000004576 sand Substances 0.000 abstract description 13
- 238000013461 design Methods 0.000 abstract description 2
- 230000000149 penetrating effect Effects 0.000 abstract 2
- 238000005259 measurement Methods 0.000 description 7
- 235000019198 oils Nutrition 0.000 description 7
- 239000003129 oil well Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 238000001595 flow curve Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000019476 oil-water mixture Nutrition 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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Abstract
The utility model relates to an impedance type water-finding instrument passing through the annulus, which comprises an instrument shell, wherein the bottom of the instrument shell is communicated with a current collector, the lower part of the instrument shell is provided with a turbine flowmeter, a liquid production channel is formed between a turbine of the turbine flowmeter and the inner wall of the instrument shell, and the radial spacing width between the turbine and the inner wall of the instrument shell is larger than the grain diameter setting of gravel in liquid production in a well; a sampler is arranged above the turbine flowmeter, an impedance type water content meter is arranged above the sampler, and the sampler can be communicated with the impedance type water content meter and can plug the impedance type water content meter from the bottom; a circuit cylinder is arranged above the impedance type moisture content meter, a first liquid outlet is arranged on the side wall of the instrument shell and above the impedance type moisture content meter in a radially penetrating mode, and a second liquid outlet is arranged on the side wall of the instrument shell and in a radially penetrating mode at a position corresponding to the upper portion of the sampler. The utility model discloses an adopt the turbine flowmeter of improved design, avoid the turbine to be blocked by sand grain in the pit, reduce the flow calculation error, improve logging efficiency.
Description
Technical Field
The utility model relates to an oil test technical field especially relates to an empty water detector of impedance formula ring.
Background
The impedance type over-annular water detector is mainly applied to output profile logging in a high water-containing period of an oil field, is an advanced technology in the current oil well layered test, can overcome the influence of fluctuation of liquid production in the well on water content, quantitatively reflects the real conditions of the layered liquid production and the layered water content of the oil well, and provides a reliable basis for layered dynamic analysis and research, layered water injection adjustment and measure excavation of the oil field. However, in the region with complex reservoir structure and more downhole sand, the impedance turbine flowmeter is often interfered by downhole sand particles, and logging data is affected. In order to better improve the logging data recording quality and the logging efficiency, the turbine needs to be improved.
Therefore, the inventor provides an impedance type annular water detector with an improved structure 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 an annular space water exploration appearance is crossed to impedance formula adopts the turbine flowmeter of improved design, avoids the turbine to be blocked by sand grain in the pit, reduces flow calculation error, improves logging efficiency.
The utility model aims at realizing the impedance type annular space water exploration instrument, which comprises an instrument shell which is arranged in a tubular structure, wherein the bottom of the instrument shell is communicated with a current collector which is used for leading the produced fluid in the well into the instrument shell; a turbine flowmeter is arranged at the lower part in the instrument shell, a turbine of the turbine flowmeter and the inner wall of the instrument shell are arranged at a radial interval to form a liquid production channel, and the radial interval width between the turbine of the turbine flowmeter and the inner wall of the instrument shell is larger than the grain size of gravel in liquid production in the well; a sampler is arranged above the turbine flowmeter, the side wall of the sampler and the inner wall of the instrument shell are arranged at intervals, an impedance type water content meter for measuring water content is arranged above the sampler, and the sampler can be communicated with the impedance type water content meter and can plug the impedance type water content meter from the bottom; a circuit cylinder which is hermetically wrapped with a constant current source is arranged above the impedance type moisture content meter, and the sampler and the impedance type moisture content meter are both electrically connected with the constant current source; the device comprises an instrument shell, a sampler, an impedance type moisture content meter, a sampler, a sampling device and a controller, wherein the side wall of the instrument shell is located above the impedance type moisture content meter and is radially communicated with a first liquid outlet, and the side wall of the instrument shell is located at a position corresponding to the upper part of the sampler and is radially communicated with a second liquid outlet.
In a preferred embodiment of the present invention, the turbine of the turbine flowmeter is provided with 3 turbine blades which are circumferentially rotated.
In a preferred embodiment of the present invention, the average diameter of the gravel in the well fluid is between 0.1 and 1mm, and the width of the radial gap between the turbine of the turbine flowmeter and the inner wall of the instrument housing is greater than 1 mm.
In a preferred embodiment of the present invention, a section of the instrument housing located above the sampler is insulated to form a moisture content meter housing, the inner wall of the moisture content meter housing is provided with a plurality of electrode rings along the axial direction at intervals, two electrode rings located at the top end and the bottom end are power supply electrodes, one power supply electrode is electrically connected with a constant current source in the circuit cylinder, and the other power supply electrode is grounded; the electrode ring in the middle is a measuring electrode which is electrically connected to a circuit amplifier in the circuit cylinder, and the circuit amplifier is electrically connected with a ground instrument.
In a preferred embodiment of the present invention, an insulating lining is disposed on the inner wall of the section of the instrument housing located above the sampler.
In a preferred embodiment of the present invention, the top of the instrument housing is provided with a hanging ring.
In a preferred embodiment of the present invention, a section of the instrument housing located above the sampler is insulated to form a moisture content meter housing, the inner wall of the moisture content meter housing is provided with a plurality of electrode rings along the axial direction at intervals, two electrode rings located at the top end and the bottom end are power supply electrodes, one power supply electrode is electrically connected with a constant current source in the circuit cylinder, and the other power supply electrode is grounded; the electrode ring in the middle is a measuring electrode which is electrically connected to a circuit amplifier in the circuit cylinder, and the circuit amplifier is electrically connected with a ground instrument.
In a preferred embodiment of the present invention, an insulating lining is disposed on the inner wall of the section of the instrument housing located above the sampler.
In a preferred embodiment of the present invention, the top of the instrument housing is provided with a hanging ring.
In a preferred embodiment of the present invention, the current collector is an umbrella type current collector or a rubber ball type current collector.
From above, the utility model provides a pair of annular space water detector is crossed to impedance formula has following beneficial effect:
the utility model provides a pair of among annular space water exploration appearance is crossed to impedance formula, be radial interval between the inner wall of turbine flowmeter and instrument shell and set up the constitution and produce the liquid passageway, and radial interval width between the turbine of turbine flowmeter and the inner wall of instrument shell is greater than the particle diameter setting of gravel in the liquid of producing in the well, avoid the turbine to be blocked by sand grain in the well, can stop the influence of oil well sand production to the logging from a certain extent, reduce the flow calculation error, and the continuity of overflowing has been guaranteed, overcome the influence of fluctuation in the well, the real-time supervision to the moisture content has been realized, make measuring result more accurate, reliable, precision to the production profile logging has had further promotion, all there is very big help to improving logging quality and promotion logging efficiency.
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 an impedance formula crosses annular space water detector's schematic structure.
FIG. 2: is the structure schematic diagram of the turbine of the utility model.
In the figure:
100. an impedance through-annulus water detector;
1. an instrument housing; 10. a fluid producing channel; 11. a first liquid outlet; 12. a second liquid outlet; 13. hanging a ring;
2. a current collector;
3. a turbine; 31. a turbine blade;
4. a sampler;
5. impedance type water content meter; 51. a power supply electrode; 52. a measuring electrode;
6. a circuit tube.
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, the present invention provides an impedance type water detector 100 through annulus, which comprises an instrument housing 1 arranged in a tubular structure, wherein a current collector 2 (prior art) is arranged at the bottom of the instrument housing 1 in a communicating manner, and the current collector 2 is used for guiding the collected flow of the produced fluid in the well into the instrument housing 1; a turbine flowmeter is arranged at the lower part in the instrument shell 1, a turbine 3 of the turbine flowmeter and the inner wall of the instrument shell 1 are arranged at radial intervals to form a liquid production channel 10, and the radial interval width A between the turbine of the turbine flowmeter and the inner wall of the instrument shell is larger than the grain size of gravel in liquid production in a well; a sampler 4 (prior art) is arranged above the turbine flowmeter, the side wall of the sampler 4 and the inner wall of the instrument shell 1 are arranged at intervals, an impedance type water content meter 5 (prior art) for measuring water content is arranged above the sampler 4, and the sampler 4 can be communicated with the impedance type water content meter 5 and can block the impedance type water content meter 5 from the bottom; a circuit cylinder 6 (prior art) which is hermetically wrapped with a constant current source is arranged above the impedance type water content meter 5, and the sampler 4 and the impedance type water content meter 5 are both electrically connected with the constant current source; a first liquid outlet 11 is arranged on the side wall of the instrument shell 1 above the impedance type moisture content meter 5 in a radial through mode, and a second liquid outlet 12 is arranged on the side wall of the instrument shell in a radial through mode corresponding to the upper portion of the sampler.
The utility model provides a pair of among annular space water exploration appearance is crossed to impedance formula, be radial interval between the inner wall of turbine flowmeter and instrument shell and set up the constitution and produce the liquid passageway, and radial interval width between the turbine of turbine flowmeter and the inner wall of instrument shell is greater than the particle diameter setting of gravel in the liquid of producing in the well, avoid the turbine to be blocked by sand grain in the well, can stop the influence of oil well sand production to the logging from a certain extent, reduce the flow calculation error, and the continuity of overflowing has been guaranteed, overcome the influence of fluctuation in the well, the real-time supervision to the moisture content has been realized, make measuring result more accurate, reliable, precision to the production profile logging has had further promotion, all there is very big help to improving logging quality and promotion logging efficiency.
Further, as shown in fig. 2, the number of turbine blades 31 on the turbine flowmeter is reduced, so that the blockage of the produced liquid is reduced, and 3 turbine blades 31 which are arranged in a circumferential rotating manner are arranged on a turbine 3 of the turbine flowmeter.
Further, oil field development must deal with the problem of well sand production, which is mainly caused by the fact that reservoir reservoirs are loosely cemented sandstones and gravel is stuck between the turbine and the instrument housing. The average grain diameter of gravel in the well production fluid is between 0.1 mm and 1mm, and in order to avoid gravel clamping stagnation, the radial spacing width A between the turbine of the turbine flowmeter and the inner wall of the instrument shell is set to be larger than 1 mm. In a specific embodiment of the utility model, radial interval width A adopts 1.5mm, and this radial interval width A is confirmed according to the actual production condition.
Further, as shown in fig. 1, a section of the instrument housing located above the sampler 4 is insulated to form a moisture content meter housing, a plurality of electrode rings are axially arranged on the inner wall of the moisture content meter housing at intervals, two electrode rings located at the top end and the bottom end are power supply electrodes 51, one power supply electrode 51 is electrically connected with a constant current source in the circuit cylinder 6, the other power supply electrode 51 is grounded, and the constant current source provides alternating current with constant amplitude for the power supply electrode 51; the centrally located electrode ring is a measuring electrode 52, the measuring electrode 52 being electrically connected to a circuit amplifier in the circuit drum 6, the circuit amplifier being electrically connected to a surface meter (prior art, for receiving measurement signals). The fluid between the two power supply electrodes 51 is used as a load of a constant current source, the voltage generated between the measuring electrodes 52 is subjected to differential amplification, AC/DC conversion, V/F conversion and power amplification and penetrates into a ground instrument, the frequency is finally output, and the moisture content can be further calculated through the output frequency.
In order to ensure the insulation property of the impedance type moisture content meter 5, an insulation lining is arranged on the inner wall of one section of instrument shell positioned above the sampler.
Further, as shown in fig. 1, a hanging ring 13 is provided on the top of the instrument case 1 for easy lifting.
Further, the current collector 2 is an umbrella type current collector or a rubber ball type current collector, and the umbrella type current collector or the rubber ball type current collector can be obtained by adopting the prior art.
When logging, after the impedance type annular water detector 100 is placed at a measuring point, the sampler 4 is electrified to work to seal the second liquid outlet 12, the current collector 2 enables the well produced liquid to flow into the instrument shell 1, the well produced liquid flows upwards through the turbine 3 of the turbine flowmeter, the well produced liquid flows to the impedance type water content meter 5 through the sampler 4, the impedance type water content meter 5 measures the overflowing well produced liquid (oil-water mixture), and the measuring result is fed back to the ground instrument. After the measurement is finished, the produced liquid in the well flows out through the first liquid outlet 11 and the second liquid outlet 12.
The utility model discloses an in an embodiment, adopt the utility model discloses an impedance formula crosses empty appearance of looking for water of ring uses 12 well times in certain oil field, and the logging success rate reaches 100%. The 4 sand wells searched in the prior test are all subjected to a turbine blockage phenomenon by adopting an old impedance type over-annulus water detector (namely the water detector with the turbine in an unmodified state), after the turbine is blocked, the flow curve is in a linear state, and at the moment of releasing the turbine, the flow curve is suddenly increased, so that the flow calculation is not accurate. Change the utility model discloses an after impedance formula crosses the ring empty water detector, do not have the card pause phenomenon completely and take place, the flow curve that surveys demonstrates steady state, the flow reading is accurate. The specific implementation is as follows:
1. the technical parameters are as follows: flow measurement range: 5 to 100m3D, measurement accuracy: plus or minus 5 percent;
measuring range of water content: 50-100%, measurement accuracy: plus or minus 3 percent;
the instrument is temperature resistant: 125 ℃;
pressure resistance of the instrument: 30 MPa.
2. Technical characteristics
(1) The water content is monitored in real time, and the measurement result is more accurate and reliable;
(2) the consistency and the repeatability are better;
(3) the influence of the flow state is small;
(4) the water content measurement range is wide from 50% to 100%;
(5) the test time is short.
3. Application scope
(1) The well head of the pumping well is an eccentric well head which can flexibly rotate, and can also be a self-blowing well.
(2) The daily liquid production of the oil well is more than 5t, and the water content is more than 50%.
(3) There are no falling object and sand surface above the bottom boundary of oil layer, and the downhole pipe column has no tools which can affect the test instrument to go into the well bottom from the annular space of oil jacket.
From above, the utility model provides a pair of annular space water detector is crossed to impedance formula has following beneficial effect:
the utility model provides a pair of among annular space water exploration appearance is crossed to impedance formula, be radial interval between the inner wall of turbine flowmeter and instrument shell and set up the constitution and produce the liquid passageway, and radial interval width between the turbine of turbine flowmeter and the inner wall of instrument shell is greater than the particle diameter setting of gravel in the liquid of producing in the well, avoid the turbine to be blocked by sand grain in the well, can stop the influence of oil well sand production to the logging from a certain extent, reduce the flow calculation error, and the continuity of overflowing has been guaranteed, overcome the influence of fluctuation in the well, the real-time supervision to the moisture content has been realized, make measuring result more accurate, reliable, precision to the production profile logging has had further promotion, all there is very big help to improving logging quality and promotion logging efficiency.
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. An impedance type over-annular water finder is characterized by comprising an instrument shell which is arranged in a cylindrical structure, wherein the bottom of the instrument shell is communicated with a current collector, and the current collector is used for leading the collected current of produced fluid in a well into the instrument shell; a turbine flowmeter is arranged at the lower part in the instrument shell, a turbine of the turbine flowmeter and the inner wall of the instrument shell are arranged at a radial interval to form a liquid production channel, and the radial interval width between the turbine of the turbine flowmeter and the inner wall of the instrument shell is larger than the grain size of gravel in liquid production in the well; a sampler is arranged above the turbine flowmeter, the side wall of the sampler and the inner wall of the instrument shell are arranged at intervals, an impedance type water content meter for measuring water content is arranged above the sampler, and the sampler can be communicated with the impedance type water content meter and can plug the impedance type water content meter from the bottom; a circuit cylinder which is hermetically wrapped with a constant current source is arranged above the impedance type moisture content meter, and the sampler and the impedance type moisture content meter are both electrically connected with the constant current source; the device comprises an instrument shell, a sampler, an impedance type moisture content meter, a sampler, a sampling device and a controller, wherein the side wall of the instrument shell is located above the impedance type moisture content meter and is radially communicated with a first liquid outlet, and the side wall of the instrument shell is located at a position corresponding to the upper part of the sampler and is radially communicated with a second liquid outlet.
2. An impedance through-annulus water finder according to claim 1 wherein 3 turbine blades are provided on the turbine of the turbine flowmeter in a circumferentially rotating arrangement.
3. An impedance through-annulus water exploration instrument according to claim 2 wherein the average particle size of the gravel in the well production fluid is between 0.1 and 1mm and the turbine of said turbine meter is spaced radially from the inner wall of the instrument housing by a width greater than 1 mm.
4. The impedance type through-annulus water detector according to claim 2, wherein a section of the instrument shell positioned above the sampler is insulated to form a moisture meter shell, a plurality of electrode rings are axially arranged on the inner wall of the moisture meter shell at intervals, two electrode rings positioned at the top end and the bottom end are power supply electrodes, one power supply electrode is electrically connected with a constant current source in the circuit cylinder, and the other power supply electrode is grounded; the electrode ring in the middle is a measuring electrode which is electrically connected to a circuit amplifier in the circuit cylinder, and the circuit amplifier is electrically connected with a ground instrument.
5. An impedance through-annulus water exploration instrument according to claim 4 wherein an insulating lining is provided on the inner wall of the section of the instrument housing above the sampler.
6. The impedance type through-annulus water exploration instrument of claim 4, wherein a hanging ring is arranged at the top of the instrument shell.
7. An impedance type through-annulus water exploration instrument according to claim 3, wherein a section of instrument shell positioned above the sampler is arranged in an insulating way to form a moisture meter shell, a plurality of electrode rings are arranged on the inner wall of the moisture meter shell at intervals along the axial direction, two electrode rings positioned at the top end and the bottom end are power supply electrodes, one power supply electrode is electrically connected with a constant current source in the circuit cylinder, and the other power supply electrode is arranged in a grounding way; the electrode ring in the middle is a measuring electrode which is electrically connected to a circuit amplifier in the circuit cylinder, and the circuit amplifier is electrically connected with a ground instrument.
8. The impedance type water finder through annulus as claimed in claim 7, wherein an insulating lining is provided on the inner wall of a section of the instrument housing located above the sampler.
9. The impedance type through-annulus water exploration instrument of claim 8, wherein a hanging ring is arranged at the top of the instrument shell.
10. The impedance through-annulus water detector according to claim 2, wherein said collector is an umbrella collector or a ball collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020911071.8U CN212837778U (en) | 2020-05-26 | 2020-05-26 | Impedance type over-annulus water detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020911071.8U CN212837778U (en) | 2020-05-26 | 2020-05-26 | Impedance type over-annulus water detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212837778U true CN212837778U (en) | 2021-03-30 |
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ID=75167889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020911071.8U Active CN212837778U (en) | 2020-05-26 | 2020-05-26 | Impedance type over-annulus water detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212837778U (en) |
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2020
- 2020-05-26 CN CN202020911071.8U patent/CN212837778U/en active Active
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