CN112696172A - Electro-hydraulic compound control underground decoding device and decoding method thereof - Google Patents
Electro-hydraulic compound control underground decoding device and decoding method thereof Download PDFInfo
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- CN112696172A CN112696172A CN202011211592.3A CN202011211592A CN112696172A CN 112696172 A CN112696172 A CN 112696172A CN 202011211592 A CN202011211592 A CN 202011211592A CN 112696172 A CN112696172 A CN 112696172A
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- 239000002131 composite material Substances 0.000 claims description 7
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- 239000010410 layer Substances 0.000 description 9
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
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- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/16—Control means therefor being outside the borehole
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Abstract
The invention provides an electro-hydraulic compound control underground decoding device and a decoding method thereof. The circuit system is used for realizing the layer position identification, so that the action of the two-position three-way electromagnetic valve is realized, the pressure liquid is guided, the layer position identification efficiency is improved, the delay problem of the hydraulic decoding system is solved, and the identification precision is improved; the driving of the hydraulic control sliding sleeve is realized by utilizing 2 hydraulic control pipelines, and compared with a full-electric control mode, the driving device reduces the existence of a motor and an electronic component, improves the driving torque and further improves the reliability of the whole process.
Description
Technical Field
The invention relates to the technical field of oil and gas exploration and development, in particular to an electro-hydraulic compound control underground decoding device and a decoding method thereof.
Background
In order to develop and exploit the oil field with high efficiency, at present, a multilayer oil extraction and water injection mode is adopted, along with the deep development, the number of layers of an oil well is large, the pressure difference between layers is large, the contradiction between layers is prominent, and the edge bottom water of certain layers is caused to intrude seriously, so that the water content of the whole well is increased. Therefore, in order to achieve the purposes of stabilizing oil, controlling water and increasing yield and efficiency, the development horizon of the oil well needs to be effectively controlled, and the interlayer pressure is adjusted through the throttling device, so that the integral injection and production is realized.
A large amount of relevant researches are made on the aspect of oil-water well layered control at home and abroad, a mechanical sliding sleeve opening and closing mode is adopted at the initial stage, a mechanical sliding sleeve is opened and closed through a steel wire operation, and the opening and closing of the underground position are realized. In order to solve the problem of regulation and control of a highly deviated well, a hydraulic control sliding sleeve well completion mode is adopted, the ground hydraulic control system is used for outputting control pressure, the control pressure is transmitted to the underground hydraulic control sliding sleeve through a hydraulic control pipeline, and the opening degree of the hydraulic control sliding sleeve is adjusted. The method can carry out switch control on the underground position on the premise of not influencing normal production, compared with the operation of a steel wire cable, the regulation efficiency is greatly improved, when the number of layers of an oil-water well is large, the number of hydraulic control pipelines is large, so that the usability of the whole process is limited, although an intelligent underground position selection hydraulic decoding method and device (patent number: 2010105826522) appear in the later period, the decoding efficiency is low by adopting a hydraulic decoding mode, and meanwhile, due to the fact that the transmission of hydraulic control liquid has a delay problem, the decoding failure rate is high, and the underground control precision is influenced; with the gradual maturity of electronic technology, an electronic control intelligent well completion testing and adjusting system and method (patent number: 2010105826522) gradually appear, the system utilizes a cable to realize the adjustment of an underground electronic control sliding sleeve, the operation is simple, the adjusting and controlling efficiency is high, but the problem that the reliability of electronic components is limited under the underground high-temperature and high-pressure environment, so that the reliability of the whole process is poor is caused.
Disclosure of Invention
The invention overcomes the defects in the prior art, the hydraulic decoding mode has low decoding efficiency and high decoding failure rate, further influences the underground control precision, the electric control sliding sleeve has simple operation and high regulation efficiency, but the reliability of electronic components is limited due to high temperature and high pressure of the underground environment, so that the whole process has poor reliability, and the invention provides the electro-hydraulic composite control underground decoding device and the decoding method thereof.
The purpose of the invention is realized by the following technical scheme.
An electro-hydraulic compound control underground decoding device comprises a first hydraulic control pipeline, a second hydraulic control pipeline, an electro-hydraulic compound control device, a signal control cable and a lower electro-hydraulic compound control system,
the electro-hydraulic compound control device comprises an electro-hydraulic compound control decoder and a hydraulic control sliding sleeve, wherein the electro-hydraulic compound control decoder comprises a decoder shell, a first electro-hydraulic compound control pipeline, an electro-hydraulic compound control circuit system, a second electro-hydraulic compound control pipeline, a two-position three-way electromagnetic valve and an internal signal control cable,
when the electro-hydraulic compound control decoder is in a closed state, the first hydraulic control pipeline is connected with the hole a on the decoder shell, the hole a on the decoder shell is respectively communicated with the hole D of the two-position three-way electromagnetic valve and the hole D on the decoder shell through the first electro-hydraulic compound control pipeline, the hole D on the decoder shell is communicated with the lower liquid inlet hole of the hydraulic control sliding sleeve, the hole D of the two-position three-way electromagnetic valve is communicated with the hole E of the two-position three-way electromagnetic valve, the hole E of the two-position three-way electromagnetic valve is communicated with the hole E on the decoder shell, the hole E on the decoder shell is communicated with the liquid lifting inlet hole of the hydraulic control sliding sleeve, the second hydraulic control pipeline is connected with a hole b on the decoder shell, and the hole b on the decoder shell is communicated with a hole F of the two-position three-way electromagnetic valve through the second electro-hydraulic compound control pipeline;
when the electro-hydraulic compound control decoder is in an opening state, the first hydraulic control pipeline is connected with the hole a on the decoder shell, the hole a on the decoder shell is respectively communicated with the hole A of the two-position three-way electromagnetic valve and the hole d on the decoder shell through the first electro-hydraulic compound control pipeline, the hole d on the decoder shell is communicated with the liquid inlet hole which is arranged below the hydraulic control sliding sleeve, the second hydraulic control pipeline is connected with the hole b on the decoder shell, the hole B on the decoder shell is communicated with the hole B of the two-position three-way electromagnetic valve through the second electro-hydraulic compound control pipeline, the hole B of the two-position three-way electromagnetic valve is communicated with the hole C of the two-position three-way electromagnetic valve, the hole C of the two-position three-way electromagnetic valve is communicated with the hole e on the decoder shell, and the hole e on the decoder shell is communicated with the liquid lifting inlet hole of the hydraulic control sliding sleeve;
the signal control cable is connected with a hole c on the decoder shell, and the hole c on the decoder shell is connected with a signal receiving port of the two-position three-way electromagnetic valve through the internal signal control cable and the electro-hydraulic compound control circuit system;
the lower electro-hydraulic compound control system is arranged below the electro-hydraulic compound control device positioned at the bottommost end in the well.
The hydraulic control sliding sleeve comprises an upper lifting liquid inlet hole, a lower placing liquid inlet hole, a piston, a shell, a central tube and a liquid outlet hole, wherein a liquid guide hole penetrating through the side wall of the shell is formed in the side wall of the shell, the central tube is sleeved in the shell, the liquid outlet hole penetrating through the side wall of the central tube is uniformly formed in the position, opposite to the liquid guide hole, of the lower side wall of the central tube, an upper lifting liquid inlet hole and a lower placing liquid inlet hole penetrating through the side wall of the shell are respectively formed in the head end of the shell, and the upper lifting liquid inlet hole and the lower placing liquid inlet hole are controlled to lift and place the central tube through hydraulic pressure and the piston so as to.
And the adjacent electro-hydraulic compound control devices are separated, sealed and layered by using a packer.
The number of the electro-hydraulic compound control devices is 2-12.
And in the initial state, the electro-hydraulic compound control decoder is in a closed state.
The signal control cable is connected with ground control equipment to realize the purpose of controlling the underground electro-hydraulic composite decoder by utilizing the ground control equipment.
A decoding method of an electro-hydraulic compound control underground decoding device,
when the electro-hydraulic compound control decoder is in an initial state (namely a closed state), a first hydraulic pipeline is pressurized, pressure liquid enters a hole a on a decoder shell along the first hydraulic pipeline, respectively enters a hole D on the decoder shell and a hole D of a two-position three-way electromagnetic valve through the first electro-hydraulic compound control pipeline, the hole D of the two-position three-way electromagnetic valve is communicated with a hole E of the two-position three-way electromagnetic valve through the two-position three-way electromagnetic valve, and the pressure liquid flows to a hole E on the decoder shell, so that the pressure at the hole E on the decoder shell is the same as that at the hole D on the decoder shell, the pressure at a liquid lifting hole and a liquid lowering hole of a hydraulic control sliding sleeve is the same, namely the pressure at two ends of a piston is the same, a central pipe does not transversely move, and when the second hydraulic pipeline is pressurized, the, the F hole of the two-position three-way electromagnetic valve is in a closed state, namely, pressurization has no effect, so no matter pressure is applied to the first hydraulic pipeline and the second hydraulic pipeline, the hydraulic control sliding sleeve does not act, namely, the original state is kept;
the ground control equipment sends an opening signal to the electro-hydraulic compound control decoder, at the moment, when the electro-hydraulic compound control decoder is in an opening state, the first hydraulic pipeline is pressurized, pressure liquid enters the hole a on the decoder shell along the first hydraulic pipeline and respectively enters the hole d on the decoder shell and the hole A of the two-position three-way electromagnetic valve through the first electro-hydraulic compound control pipeline, namely, the pressure of the hole d on the decoder shell is the pressure of the first hydraulic pipeline, the second hydraulic pipeline is connected with the hole B on the decoder shell and is connected with the hole B of the two-position three-way electromagnetic valve, the hole B of the two-position three-way electromagnetic valve is communicated with the hole C of the two-position three-way electromagnetic valve through the two-position three-way valve, and the pressure liquid flows to the hole e on the decoder shell, so that the pressure of the hole e on the decoder shell is, when the second hydraulic pipeline applies pressure and the first hydraulic pipeline does not act, the pressure of the lifting liquid inlet hole rises, the piston is pushed to move rightwards, the central pipe is driven to move rightwards, and therefore the valve is adjusted.
The invention has the beneficial effects that: by utilizing an electro-hydraulic composite control decoding mode, rapid selection of a plurality of underground positions can be realized, the problem that the existing hydraulic control decoding can only realize control of 6 layers is solved, and the identification positions can be infinitely increased in the control mode theoretically; the circuit system is used for realizing the layer position identification, so that the action of the two-position three-way electromagnetic valve is realized, the pressure liquid is guided, the layer position identification efficiency is improved, the delay problem of the hydraulic decoding system is solved, and the identification precision is improved; the driving of the hydraulic control sliding sleeve is realized by utilizing 2 hydraulic control pipelines, and compared with a full-electric control mode, the driving device reduces the existence of a motor and an electronic component, improves the driving torque and further improves the reliability of the whole process.
Drawings
FIG. 1 is a schematic view of the overall downhole configuration of the present invention; (a) is in an initial state, and (b) is in a sliding sleeve state when the first layer is electrified;
FIG. 2 is a schematic diagram of the overall structure of the closing state of the electro-hydraulic compound control device in the invention;
FIG. 3 is a schematic diagram of the overall structure of the opening state of the electro-hydraulic compound control device in the invention;
FIG. 4 is a schematic diagram of the closed state structure of the electro-hydraulic compound control decoder in the present invention;
FIG. 5 is a structural diagram of the open state of the electrohydraulic composite control decoder of the present invention;
FIG. 6 is a schematic structural diagram of a closed state of the two-position three-way solenoid valve according to the present invention;
FIG. 7 is a structural diagram illustrating an open state of the two-position three-way solenoid valve according to the present invention;
in the figure: the hydraulic control system comprises a first hydraulic control pipeline 1, a second hydraulic control pipeline 2, a first electro-hydraulic compound control decoder 3, a first hydraulic control sliding sleeve 4, a second electro-hydraulic compound control decoder 5, a second electro-hydraulic sliding sleeve 6, a signal control cable 7, a lower electro-hydraulic compound control system 8, a decoder shell 9, a liquid inlet hole 10 for lifting, a liquid inlet hole 11 for lowering, a piston 12 for lowering, a shell 13 for shell, a central pipe 14 for discharging, a liquid outlet hole 15 for discharging, a first electro-hydraulic compound control pipeline 16, an electro-hydraulic compound control circuit system 17, a second electro-hydraulic compound control pipeline 18, a two-position three-way electromagnetic valve 19 and an internal signal control cable 20.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
The technical solution of the present invention is further illustrated by the following specific examples.
Example one
An electro-hydraulic compound control underground decoding device comprises a first hydraulic control pipeline 1, a second hydraulic control pipeline 2, an electro-hydraulic compound control device, a signal control cable 7 and a lower electro-hydraulic compound control system 8,
the electro-hydraulic compound control device comprises an electro-hydraulic compound control decoder and a hydraulic control sliding sleeve, the electro-hydraulic compound control decoder comprises a decoder shell 9, a first electro-hydraulic compound control pipeline 16, an electro-hydraulic compound control circuit system 17, a second electro-hydraulic compound control pipeline 18, a two-position three-way electromagnetic valve 19 and an internal signal control cable 20,
when the electro-hydraulic compound control decoder is in a closed state, the first hydraulic control pipeline 1 is connected with a hole a on the decoder shell 9, the hole a on the decoder shell 9 is respectively communicated with a hole D of the two-position three-way electromagnetic valve 19 and a hole D on the decoder shell 9 through the first electro-hydraulic compound control pipeline 16, the hole D on the decoder shell 9 is communicated with a lower liquid inlet hole 11 of the hydraulic control sliding sleeve, the hole D of the two-position three-way electromagnetic valve 19 is communicated with a hole E of the two-position three-way electromagnetic valve 19, the hole E of the two-position three-way electromagnetic valve 19 is communicated with a hole E on the decoder shell 9, the hole E on the decoder shell 9 is communicated with an upper liquid inlet hole 10 of the hydraulic control sliding sleeve, the second hydraulic control pipeline 2 is connected with a hole b on the decoder shell 9, and the hole b on the decoder;
when the electro-hydraulic compound control decoder is in an opening state, a first hydraulic control pipeline 1 is connected with a hole a on a decoder shell 9, the hole a on the decoder shell 9 is respectively communicated with a hole A of a two-position three-way electromagnetic valve 19 and a hole d on the decoder shell 9 through a first electro-hydraulic compound control pipeline 16, the hole d on the decoder shell 9 is communicated with a downward liquid inlet hole 11 of a hydraulic control sliding sleeve, a second hydraulic control pipeline 2 is connected with a hole B on the decoder shell 9, the hole B on the decoder shell 9 is communicated with a hole B of the two-position three-way electromagnetic valve 19 through a second electro-hydraulic compound control pipeline 18, the hole B of the two-position three-way electromagnetic valve 19 is communicated with the hole C of the two-position three-way electromagnetic valve 19, the hole C of the two-position three-way electromagnetic valve 19 is communicated with a hole e on;
the signal control cable 7 is connected with a hole c on the decoder shell 9, and the hole c on the decoder shell 9 is connected with a signal receiving port of the two-position three-way electromagnetic valve 19 through an internal signal control cable 20 and the electro-hydraulic compound control circuit system 17;
and the lower electro-hydraulic compound control system 8 is arranged below the electro-hydraulic compound control device positioned at the bottommost end in the well.
Example two
On the basis of embodiment one, the hydraulic control sliding sleeve is including lifting feed liquor hole 10, lower feed liquor hole 11, piston 12, shell 13, center tube 14 and play liquid hole 15, set up the drain hole that runs through the lateral wall of shell 13 on the lateral wall of shell 13, cup joint center tube 14 in shell 13, evenly set up the play liquid hole 15 that runs through the lateral wall of center tube 14 in the lower part lateral wall of center tube 14 and drain hole opposite department, set up respectively at the head end of shell 13 and run through shell 13 lateral wall lift feed liquor hole 10 and lower feed liquor hole 11, lift feed liquor hole 10 and lower feed liquor hole 11 and all control lifting and transferring of center tube 14 through hydraulic pressure and piston 12 to realize the adjustment of level.
EXAMPLE III
On the basis of the second embodiment, the adjacent electro-hydraulic compound control devices are separated and sealed for layering by using packers.
The number of the electro-hydraulic compound control devices is 2-12.
In the initial state, the electro-hydraulic compound control decoder is in a closed state.
The signal control cable 7 is connected with ground control equipment to realize the purpose of controlling the underground electro-hydraulic composite decoder by utilizing the ground control equipment.
Example four
A decoding method of an electro-hydraulic compound control underground decoding device,
when the electro-hydraulic compound control decoder is in an initial state (namely a closed state), a first hydraulic pipeline is pressurized, pressure liquid enters a hole a on a decoder shell along the first hydraulic pipeline, respectively enters a hole D on the decoder shell and a hole D of a two-position three-way electromagnetic valve through the first electro-hydraulic compound control pipeline, the hole D of the two-position three-way electromagnetic valve is communicated with a hole E of the two-position three-way electromagnetic valve through the two-position three-way electromagnetic valve, and the pressure liquid flows to a hole E on the decoder shell, so that the pressure at the hole E on the decoder shell is the same as that at the hole D on the decoder shell, the pressure at a liquid lifting hole and a liquid lowering hole of a hydraulic control sliding sleeve is the same, namely the pressure at two ends of a piston is the same, a central pipe does not transversely move, and when the second hydraulic pipeline is pressurized, the, the F hole of the two-position three-way electromagnetic valve is in a closed state, namely, pressurization has no effect, so no matter pressure is applied to the first hydraulic pipeline and the second hydraulic pipeline, the hydraulic control sliding sleeve does not act, namely, the original state is kept;
the ground control equipment sends an opening signal to the electro-hydraulic compound control decoder, at the moment, when the electro-hydraulic compound control decoder is in an opening state, the first hydraulic pipeline is pressurized, pressure liquid enters the hole a on the decoder shell along the first hydraulic pipeline and respectively enters the hole d on the decoder shell and the hole A of the two-position three-way electromagnetic valve through the first electro-hydraulic compound control pipeline, namely, the pressure of the hole d on the decoder shell is the pressure of the first hydraulic pipeline, the second hydraulic pipeline is connected with the hole B on the decoder shell and is connected with the hole B of the two-position three-way electromagnetic valve, the hole B of the two-position three-way electromagnetic valve is communicated with the hole C of the two-position three-way electromagnetic valve through the two-position three-way valve, and the pressure liquid flows to the hole e on the decoder shell, so that the pressure of the hole e on the decoder shell is, when the second hydraulic pipeline applies pressure and the first hydraulic pipeline does not act, the pressure of the lifting liquid inlet hole rises, the piston is pushed to move rightwards, the central pipe is driven to move rightwards, and therefore the valve is adjusted.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The present invention has been described in detail, but the above description is only a preferred embodiment of the present invention, and is not to be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (7)
1. The utility model provides an electricity liquid composite control is decoding device in pit which characterized in that: comprises a first hydraulic control pipeline, a second hydraulic control pipeline, an electro-hydraulic compound control device, a signal control cable and a lower electro-hydraulic compound control system,
the electro-hydraulic compound control device comprises an electro-hydraulic compound control decoder and a hydraulic control sliding sleeve, wherein the electro-hydraulic compound control decoder comprises a decoder shell, a first electro-hydraulic compound control pipeline, an electro-hydraulic compound control circuit system, a second electro-hydraulic compound control pipeline, a two-position three-way electromagnetic valve and an internal signal control cable,
when the electro-hydraulic compound control decoder is in a closed state, the first hydraulic control pipeline is connected with the hole a on the decoder shell, the hole a on the decoder shell is respectively communicated with the hole D of the two-position three-way electromagnetic valve and the hole D on the decoder shell through the first electro-hydraulic compound control pipeline, the hole D on the decoder shell is communicated with the lower liquid inlet hole of the hydraulic control sliding sleeve, the hole D of the two-position three-way electromagnetic valve is communicated with the hole E of the two-position three-way electromagnetic valve, the hole E of the two-position three-way electromagnetic valve is communicated with the hole E on the decoder shell, the hole E on the decoder shell is communicated with the liquid lifting inlet hole of the hydraulic control sliding sleeve, the second hydraulic control pipeline is connected with a hole b on the decoder shell, and the hole b on the decoder shell is communicated with a hole F of the two-position three-way electromagnetic valve through the second electro-hydraulic compound control pipeline;
when the electro-hydraulic compound control decoder is in an opening state, the first hydraulic control pipeline is connected with the hole a on the decoder shell, the hole a on the decoder shell is respectively communicated with the hole A of the two-position three-way electromagnetic valve and the hole d on the decoder shell through the first electro-hydraulic compound control pipeline, the hole d on the decoder shell is communicated with the liquid inlet hole which is arranged below the hydraulic control sliding sleeve, the second hydraulic control pipeline is connected with the hole b on the decoder shell, the hole B on the decoder shell is communicated with the hole B of the two-position three-way electromagnetic valve through the second electro-hydraulic compound control pipeline, the hole B of the two-position three-way electromagnetic valve is communicated with the hole C of the two-position three-way electromagnetic valve, the hole C of the two-position three-way electromagnetic valve is communicated with the hole e on the decoder shell, and the hole e on the decoder shell is communicated with the liquid lifting inlet hole of the hydraulic control sliding sleeve;
the signal control cable is connected with a hole c on the decoder shell, and the hole c on the decoder shell is connected with a signal receiving port of the two-position three-way electromagnetic valve through the internal signal control cable and the electro-hydraulic compound control circuit system;
the lower electro-hydraulic compound control system is arranged below the electro-hydraulic compound control device positioned at the bottommost end in the well.
2. The electro-hydraulic compound control downhole decoding device of claim 1, wherein: the hydraulic control sliding sleeve comprises an upper lifting liquid inlet hole, a lower placing liquid inlet hole, a piston, a shell, a central tube and a liquid outlet hole, wherein a liquid guide hole penetrating through the side wall of the shell is formed in the side wall of the shell, the central tube is sleeved in the shell, the liquid outlet hole penetrating through the side wall of the central tube is uniformly formed in the position, opposite to the liquid guide hole, of the lower side wall of the central tube, an upper lifting liquid inlet hole and a lower placing liquid inlet hole penetrating through the side wall of the shell are respectively formed in the head end of the shell, and the upper lifting liquid inlet hole and the lower placing liquid inlet hole are controlled to lift and place the central tube through hydraulic pressure and the piston so as to.
3. The electro-hydraulic compound control downhole decoding device of claim 1, wherein: and the adjacent electro-hydraulic compound control devices are separated, sealed and layered by using a packer.
4. The electro-hydraulic compound control downhole decoding device of claim 1, wherein: the number of the electro-hydraulic compound control devices is 2-12.
5. The electro-hydraulic compound control downhole decoding device of claim 1, wherein: and in the initial state, the electro-hydraulic compound control decoder is in a closed state.
6. The electro-hydraulic compound control downhole decoding device of claim 1, wherein: the signal control cable is connected with ground control equipment to realize the purpose of controlling the underground electro-hydraulic composite decoder by utilizing the ground control equipment.
7. The decoding method of the electro-hydraulic compound control downhole decoding device according to any one of claims 1 to 6, wherein:
when the electro-hydraulic compound control decoder is in an initial state (namely a closed state), a first hydraulic pipeline is pressurized, pressure liquid enters a hole a on a decoder shell along the first hydraulic pipeline, respectively enters a hole D on the decoder shell and a hole D of a two-position three-way electromagnetic valve through the first electro-hydraulic compound control pipeline, the hole D of the two-position three-way electromagnetic valve is communicated with a hole E of the two-position three-way electromagnetic valve through the two-position three-way electromagnetic valve, and the pressure liquid flows to a hole E on the decoder shell, so that the pressure at the hole E on the decoder shell is the same as that at the hole D on the decoder shell, the pressure at a liquid lifting hole and a liquid lowering hole of a hydraulic control sliding sleeve is the same, namely the pressure at two ends of a piston is the same, a central pipe does not transversely move, and when the second hydraulic pipeline is pressurized, the, the F hole of the two-position three-way electromagnetic valve is in a closed state, namely, pressurization has no effect, so no matter pressure is applied to the first hydraulic pipeline and the second hydraulic pipeline, the hydraulic control sliding sleeve does not act, namely, the original state is kept;
the ground control equipment sends an opening signal to the electro-hydraulic compound control decoder, at the moment, when the electro-hydraulic compound control decoder is in an opening state, the first hydraulic pipeline is pressurized, pressure liquid enters the hole a on the decoder shell along the first hydraulic pipeline and respectively enters the hole d on the decoder shell and the hole A of the two-position three-way electromagnetic valve through the first electro-hydraulic compound control pipeline, namely, the pressure of the hole d on the decoder shell is the pressure of the first hydraulic pipeline, the second hydraulic pipeline is connected with the hole B on the decoder shell and is connected with the hole B of the two-position three-way electromagnetic valve, the hole B of the two-position three-way electromagnetic valve is communicated with the hole C of the two-position three-way electromagnetic valve through the two-position three-way valve, and the pressure liquid flows to the hole e on the decoder shell, so that the pressure of the hole e on the decoder shell is, when the second hydraulic pipeline applies pressure and the first hydraulic pipeline does not act, the pressure of the lifting liquid inlet hole rises, the piston is pushed to move rightwards, the central pipe is driven to move rightwards, and therefore the valve is adjusted.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2598031B (en) * | 2020-06-23 | 2023-06-07 | Onesubsea Ip Uk Ltd | Distributed control system for a well string |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GB0624399D0 (en) * | 2006-01-13 | 2007-01-17 | Schlumberger Holdings | Flow control system for use in a well |
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