CN201679496U - Underground liquid level monitor for gas storage well - Google Patents
Underground liquid level monitor for gas storage well Download PDFInfo
- Publication number
- CN201679496U CN201679496U CN2009202294998U CN200920229499U CN201679496U CN 201679496 U CN201679496 U CN 201679496U CN 2009202294998 U CN2009202294998 U CN 2009202294998U CN 200920229499 U CN200920229499 U CN 200920229499U CN 201679496 U CN201679496 U CN 201679496U
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- cable
- liquid level
- electrode
- gas storage
- storage well
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Abstract
The utility model provides an underground liquid level monitor for a gas storage well, which has long service life and convenience. The underground liquid level monitor is characterized by comprising a shell structure and a circuit structure, wherein the shell structure, in a cylindrical shape as a whole, consists of a cable fixed joint, a cable head protective barrel, a cable head socket joint, an insulating barrel, an electrode and a tail pipe which are sequentially connected; and the circuit structure comprises a cable and a detection circuit, the cable is fixed in the cable fixed joint and connected with the detection circuit, and the detection circuit is arranged in the insulating barrel and connected with the electrode. The working principle of the underground liquid level monitor is based on the conductive difference of saline water and diesel oil (or nitrogen gas), and the electrodeplate of the immersed saline water can be determined according to a current value output by the underground liquid level monitor, i.e. the one-to-one corresponding relation of the current value and the depth of an oil-water interface can be established, thereby the height value of the oil-water interface is determined. The underground liquid level monitor has higher bearing capacity without special molds, convenience for processing and manufacturing, long service life and lower cost.
Description
Technical field
The utility model relates to oil-water interfaces testing tool under the natural gas well.
Background technology
Domesticly starting late aspect the gas storage well monitoring, have only several family units to carry out correlative study at present, aspect liquid level monitoring, retrieve 3 patent CN200620118212.0 (a kind of oil-water interfaces detecting sensor) about this type of technology by Chinese patent database; CN200720088374.9 (power factor interface monitor); CN87214002 (fluid density interface monitor).But be used at present on-the-spot only (ZL200620118212.0) by " a kind of oil-water interfaces detecting sensor " of the development of drilling engineering institute of PetroChina Company Limited..
This technology can satisfy the needs of gas storage liquid level monitoring at present basically, but has following defective: the instrument profile is flat, and adding needs the die sinking tool man-hour, and crimping forms, and cost is higher.The electrode of instrument partly uses solid seal glue bonding, wears out easily, comes off.Electrode apparatus directly is bonded on the insulating slab, if measure wider oil-water interfaces height, needs die sinking tool again, adds more electrode hole.What instrument was taked is single adhering and sealing mode, and the maximum temperature that can bear is 80 ℃, and maximum pressure is 30MPa, is unfavorable in the down-hole long-term work.
The utility model content
The technical problems to be solved in the utility model is: a kind of long service life, gas storage well down-hole liquid level monitoring instrument easily are provided.
The utility model is to solve the problems of the technologies described above the technical scheme of being taked to be:
A kind of gas storage well down-hole liquid level monitoring instrument, it is characterized in that: it comprises shell mechanism and circuit structure; Wherein shell mechanism is connected in turn by cable anchor tip, cable head protection tube, cable head receptacle terminal, insulating cylinder, electrode and tail pipe and forms whole one-tenth cylindrical shape; Circuit structure comprises cable and testing circuit, and cable is fixed in the cable anchor tip and links with testing circuit, and testing circuit is arranged in the insulating cylinder and links with electrode.Tail pipe plays fixation.
Press such scheme, described cable is pressed on the copper core, and external packets is wrapped with insulation sleeve, is plugged on single core seal nipple, and links with described cable head receptacle terminal.
Press such scheme, between described cable anchor tip and the cable head protection tube, between cable head protection tube and the cable head receptacle terminal, between cable head receptacle terminal and the insulating cylinder, be pair " O " type circles and thread connection between single core seal nipple and the cable head receptacle terminal.Two " O " type encloses sealing function.
Press such scheme, described insulating cylinder is arranged between described electrode and the electrode, and each electrode is furnished with a described testing circuit.In the liquid level monitoring instrument of the gas storage well down-hole of multi-stage cascade, adopt the insulating cylinder of high temperature high voltage resistant insulation materials processing to connect between each electrode, distance between electrodes requires to determine that the monitor total length is determined according to number of electrodes according to certainty of measurement.During multi-stage cascade, for keeping the insulation between at different levels, electrode interior has cable-through hole, is provided with fairlead in the insulating cylinder.
Press such scheme, the clearance spaces between described shell mechanism and the circuit structure is filled with dielectric.
Press such scheme, described dielectric is a silicone grease.
Operating principle of the present utility model is to be based upon on the conduction otherness of salt solution and diesel oil (or nitrogen), and salt solution is conductor and diesel oil (or nitrogen) is non-conductor.Output signal of the present utility model is an electric current.In the time of in oil-water interfaces are in measurement category of the present utility model, described electrode will immerse in the salt solution, salt solution can make between electrode and the earth (steel pipe) and form electric loop and conducting this moment, the circuit of each electrode interior produces the electric current of about 5mA, will obtain the electric current sum in each conducting loop on cable.Current signal passes to ground by cable, and the total current value of ground instrument display instrument according to the number of electrodes that current value just can determine to immerse salt solution, can be set up the one-to-one relationship of the current value and the oil-water interfaces degree of depth, thereby determines the height value of oil-water interfaces.
The beneficial effects of the utility model are: 1, have higher bearing capacity; 2, need not special mould, be convenient to processing and manufacturing; 3, long service life; 4, cost is lower.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the utility model
The specific embodiment
Fig. 1 is the structure chart of an embodiment of the utility model, and a kind of gas storage well down-hole liquid level monitoring instrument comprises shell mechanism and circuit structure; Wherein shell mechanism is connected in turn by cable anchor tip 2, cable head protection tube 3, cable head receptacle terminal 5, insulating cylinder 7, electrode 8 and the tail pipe 9 that plays fixation and forms integral body one-tenth cylindrical shape; Circuit structure comprises cable 1 and testing circuit 6, and cable 1 is fixed in the cable anchor tip 2 and links with testing circuit 6, and testing circuit 6 is arranged in the insulating cylinder 7 and links with electrode 8.Described cable 1 is pressed on the copper core, and external packets is wrapped with insulation sleeve, is plugged on single core seal nipple 4, and links with described cable head receptacle terminal 5.Be two " O " type circles and thread connection between each parts on the shell mechanism, seal.Tail pipe 9 is provided with circular hole, uses for fixing.Inner clearance spaces is all filled silicone grease, makes the instrument outside liquid can't leak into instrument internal and goes, and the protection electronic circuit is not corroded and short circuit.
The utility model can also adopt the mode of multi-stage cascade, and each electrode 8 connects a cover testing circuit 6, is connected by insulating cylinder 7 between each electrode 8, and the distance between the electrode 8 requires to determine that the monitor total length is determined according to number of electrodes according to certainty of measurement.During multi-stage cascade, for keeping the insulation between at different levels, there is cable-through hole electrode 8 inside, are provided with fairlead in the insulating cylinder 7.
Claims (6)
1. gas storage well down-hole liquid level monitoring instrument, it is characterized in that: it comprises shell mechanism and circuit structure; Wherein shell mechanism is connected in turn by cable anchor tip, cable head protection tube, cable head receptacle terminal, insulating cylinder, electrode and tail pipe and forms whole one-tenth cylindrical shape; Circuit structure comprises cable and testing circuit, and cable is fixed in the cable anchor tip and links with testing circuit, and testing circuit is arranged in the insulating cylinder and links with electrode.
2. gas storage well according to claim 1 down-hole liquid level monitoring instrument, it is characterized in that: described cable is pressed on the copper core, and external packets is wrapped with insulation sleeve, is plugged on single core seal nipple, and links with described cable head receptacle terminal.
3. gas storage well according to claim 1 down-hole liquid level monitoring instrument is characterized in that: between described cable anchor tip and the cable head protection tube, between cable head protection tube and the cable head receptacle terminal, between cable head receptacle terminal and the insulating cylinder, be pair " O " type circles and thread connection between single core seal nipple and the cable head receptacle terminal.
4. gas storage well according to claim 1 down-hole liquid level monitoring instrument is characterized in that: described insulating cylinder is arranged between described electrode and the electrode, and each electrode is furnished with a described testing circuit.
5. according to any described gas storage well down-hole liquid level monitoring instrument in the claim 1 to 4, it is characterized in that: the clearance spaces between described shell mechanism and the circuit structure is filled with dielectric.
6. gas storage well according to claim 5 down-hole liquid level monitoring instrument is characterized in that: described dielectric is a silicone grease.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202294998U CN201679496U (en) | 2009-11-06 | 2009-11-06 | Underground liquid level monitor for gas storage well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202294998U CN201679496U (en) | 2009-11-06 | 2009-11-06 | Underground liquid level monitor for gas storage well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201679496U true CN201679496U (en) | 2010-12-22 |
Family
ID=43344544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202294998U Expired - Lifetime CN201679496U (en) | 2009-11-06 | 2009-11-06 | Underground liquid level monitor for gas storage well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201679496U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191179A (en) * | 2016-03-15 | 2017-09-22 | 中国石油化工股份有限公司 | A kind of Oil/gas Well hydrodynamic face method of testing |
| CN109577953A (en) * | 2018-12-29 | 2019-04-05 | 青海岩土工程勘察咨询有限公司 | A kind of drilling liquid monitoring device |
| CN112780270A (en) * | 2020-12-11 | 2021-05-11 | 中国石油天然气股份有限公司 | Underground sampling test device and test method |
| CN113738344A (en) * | 2020-05-29 | 2021-12-03 | 中国石油化工股份有限公司 | Oil-water interface depth determination method and early warning method for preventing water channeling of production well |
| CN113803055A (en) * | 2020-06-11 | 2021-12-17 | 中国石油化工股份有限公司 | Oil-water interface depth determination method and early warning method for preventing water channeling of production well |
-
2009
- 2009-11-06 CN CN2009202294998U patent/CN201679496U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191179A (en) * | 2016-03-15 | 2017-09-22 | 中国石油化工股份有限公司 | A kind of Oil/gas Well hydrodynamic face method of testing |
| CN109577953A (en) * | 2018-12-29 | 2019-04-05 | 青海岩土工程勘察咨询有限公司 | A kind of drilling liquid monitoring device |
| CN109577953B (en) * | 2018-12-29 | 2023-12-22 | 青海岩土工程勘察咨询有限公司 | Drilling fluid liquid level monitoring device |
| CN113738344A (en) * | 2020-05-29 | 2021-12-03 | 中国石油化工股份有限公司 | Oil-water interface depth determination method and early warning method for preventing water channeling of production well |
| CN113803055A (en) * | 2020-06-11 | 2021-12-17 | 中国石油化工股份有限公司 | Oil-water interface depth determination method and early warning method for preventing water channeling of production well |
| CN112780270A (en) * | 2020-12-11 | 2021-05-11 | 中国石油天然气股份有限公司 | Underground sampling test device and test method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101222 |
|
| CX01 | Expiry of patent term |