CN106812498A - A kind of intelligent well completion downhole flow valve hydraulic control system - Google Patents
A kind of intelligent well completion downhole flow valve hydraulic control system Download PDFInfo
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- CN106812498A CN106812498A CN201510865107.7A CN201510865107A CN106812498A CN 106812498 A CN106812498 A CN 106812498A CN 201510865107 A CN201510865107 A CN 201510865107A CN 106812498 A CN106812498 A CN 106812498A
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- 239000010720 hydraulic oil Substances 0.000 claims abstract description 8
- 239000012530 fluid Substances 0.000 claims description 9
- 108010076504 Protein Sorting Signals Proteins 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000003921 oil Substances 0.000 abstract description 9
- 239000007788 liquid Substances 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000005183 dynamical system Methods 0.000 description 2
- 210000003722 extracellular fluid Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002547 anomalous effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
- E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Pipeline Systems (AREA)
Abstract
A kind of intelligent well completion downhole flow valve hydraulic control system, is made up of hydraulic oil source, power set and overflow valve group.2 standardized nominal pressures, threshold pressure, high pressure can be provided to underground, and be prevented from interference of the invalid signals to underground working.The control system can realize 2~6 controls of production layer, the need for disclosure satisfy that current oil field produces.Be conducive to the standardization of intelligent well completion kit (for example passing through the design of packer) simultaneously.
Description
Technical field
The present invention relates to a kind of intelligent well completion downhole flow valve hydraulic control system, it is adaptable to mechanical field.
Background technology
Intelligent completion system is monitored to oil reservoir in real time by the monitoring (pressure, temperature, flow etc.) to downhole production layer fluid parameter and control in the way of remote control, meets oil well production requirement.Intelligent completion system is divided into 2 parts of underground condition monitoring system and downhole flow tele-control system.Underground condition monitoring system mainly using the sensor and instrument for being installed on underground, ground is transferred to by communication system, monitors downhole fluid dynamic parameter；Downhole flow tele-control system is main to be realized adjusting the switch of downhole flow control valve by hydraulic pressure or power system, to realize the control to production status.Downhole flow tele-control system is the intelligent well completion difference maximum with conventional completed well, and it can realize producing the remote control and regulation of layer downhole tool, without being the adjustment for being capable of achieving Anomalous character by steel wire operation, so as to farthest ensure the normal production of oil well.
The content of the invention
The present invention proposes a kind of intelligent well completion downhole flow valve hydraulic control system, and the control system can realize 2~6 controls of production layer, the need for disclosure satisfy that current oil field produces.Be conducive to the standardization of intelligent well completion kit (for example passing through the design of packer) simultaneously.
The technical solution adopted in the present invention is：The wellhead hydraulic power and signal generating system provide hydraulic power and hydraulic pressure signal simultaneously.Signal is made up of invalid signals and useful signal.System sets a threshold pressure, and less than this threshold pressure, system regards as invalid signals, or is spurious signal, and downhole system is not worked.When useful signal refers to that system pressure reaches certain value, this pressure is regarded as useful signal by downhole system.Useful signal represents threshold pressure signal, high-voltage signal according to pressure size respectively.So system can recognize that 0 pressure signal, threshold pressure signal, 3 pressure signals of high-voltage signal.
The hydraulic power and signal generating system provide the power that underground performs original paper on ground, while providing the hydraulic pressure signal of down well placement control.System is made up of hydraulic oil source, power set and overflow valve group.The system can provide 2 standardized nominal pressures, threshold pressure, high pressure to underground, and be prevented from interference of the invalid signals to underground working.
The hydraulic pressure signal is made up of invalid signals and useful signal.System pressure is zero to regard as invalid signals, and downhole system is not worked.When useful signal refers to that system pressure reaches certain value (pressure with underground hydraulic pressure decoder design is relevant), this pressure is regarded as effective hydraulic pressure signal by downhole system.It is as shown in the table for hydraulic pressure signal instruction design, by taking the control instruction of target zone 1 as an example, apply hydraulic pressure command using control line 1 and 2 pairs of target zones 1, control line 3 is reflux pipeline, effective hydraulic pressure signal first is applied to control line 1, this pressure signal is kept, effective hydraulic pressure signal then is applied to control line 2 again, realize the selection control instruction of target zone 1.
The underground hydraulic pressure decoder includes hydraulic control lines, hydraulic pressure decoder, pressure instruction.Hydraulic control lines mainly transmit hydraulic power and pressure instruction, hydraulic pressure decoder is using 2 two position two-way valve compositions of hydraulic control, it can recognize different pressure instruction sequences, purpose of horizon into is guided power fluid according to different instructions, design of the pressure instruction according to hydraulic pressure decoder, preset pressure signal, different pressure signal sequence pair answers the operation of different layers position.Each layer participates in decoding only with 2 hydraulic lines, and each layer of position is controlled by 2 hydraulic lines.By different control pipelines combine 12 (1 and 2 hydraulic control lines), 23,13 can 6 production layers be divided into 3 layer groups：1st layer and z layers, the 3rd layer and the 4th layer, the 5th layer and the 6th layer, each layer of group are controlled by 2 circuits of identical.For example, the 1st, 2 target zones are controlled by line combination 12, the 3rd, 4 target zones be controlled by line combination 23, the 5th, 6 target zones are controlled by line combination 13.2 target zones therein are distinguished, only need to apply different pressure sequence signals.The sequence that the hydraulic control line and pressure instruction of 6 purpose of horizon uses apply is as shown in Figure 2.If to be controlled to the 1st target zone, digital pressure signal first can be applied to pipeline 1, digital pressure signal then is applied to pipeline 2 again；, whereas if to be controlled to the 2nd target zone, digital pressure signal first can be applied to pipeline 2, digital pressure signal then is applied to pipeline 1 again；Other layer positions will not act.
Different pressure sequences are sent by different hydraulic lines, by underground liquid laminate layer position selection decoder pressure sequence instruction of the identification from different pipelines, according to the corresponding instruction in layer position for pre-setting, power fluid is guided into the control valve pocket for needing to be operated, the selection and control of destination layer position is realized.
The beneficial effects of the invention are as follows：Control system can realize 2~6 controls of production layer, the need for disclosure satisfy that current oil field produces.Be conducive to the standardization of intelligent well completion kit (for example passing through the design of packer) simultaneously.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is that wellhead hydraulic signal of the invention occurs system principle.
Fig. 2 is layer position of the invention control principle.
Fig. 3 is Intelligent well underground decoding layer position of the invention choosing principles figure.
Fig. 4 is the target zone decoding principle figure of Intelligent well underground of the invention 1st.
Fig. 5 is the target zone decoding principle figure of Intelligent well underground of the invention 2nd.
In figure：1. fuel tank oil filter；2. tank temperature sensor；3. oil tank liquid level sensor；4th, 6,8. variable-frequency motor；5th, 7,9. hydraulic pump；10th, 20,27. loine pressure table；11st, 21,28. line-pressure sensor；12nd, 13,14. check valve；15th, 22,29. two-position two-way electromagnetic directional valve；16th, 23,30. pilot operated compound relief valve；17th, 24,31. two-position four-way solenoid directional control valve；18th, 25,32. overflow valve；19th, 26,33. overflow valve；34th, 35,36. pipeline oil filter；37,38,39. line shut-off valves；40. hydraulic control lines 1；41. hydraulic control lines 2；42. hydraulic control lines 3；43rd, 46. hydraulic control two position two-way valve open in usual；44th, 47 normally closed type hydraulic control two position two-way valve；45th, 48. hydraulic pressure outlet line.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Such as Fig. 1, wellhead hydraulic power and signal generating system provide hydraulic power and hydraulic pressure signal simultaneously.Signal is made up of invalid signals and useful signal.System sets a threshold pressure.Less than this threshold pressure, system regards as invalid signals, or is spurious signal, and downhole system is not worked.When useful signal refers to that system pressure reaches certain value, this pressure is regarded as useful signal by downhole system.Useful signal represents threshold pressure signal, high-voltage signal according to pressure size respectively.So system can recognize that 0 pressure signal, threshold pressure signal, 3 pressure signals of high-voltage signal.
Hydraulic power and signal generating system provide the power that underground performs original paper on ground, while providing the hydraulic pressure signal of down well placement control.System is made up of hydraulic oil source, power set and overflow valve group.The system can provide 2 standardized nominal pressures to underground：Threshold pressure, high pressure, and it is prevented from interference of the invalid signals to underground working.
Such as Fig. 2, hydraulic pressure signal is made up of invalid signals and useful signal.System pressure is zero to regard as invalid signals, and downhole system is not worked.When useful signal refers to that system pressure reaches certain value (pressure with underground hydraulic pressure decoder design is relevant), this pressure is regarded as effective hydraulic pressure signal by downhole system.It is as shown in the table for hydraulic pressure signal instruction design, by taking the control instruction of target zone 1 as an example, apply hydraulic pressure command using control line 1 and 2 pairs of target zones 1, control line 3 is reflux pipeline, effective hydraulic pressure signal first is applied to control line 1, this pressure signal is kept, effective hydraulic pressure signal then is applied to control line 2 again, realize the selection control instruction of target zone 1.
Such as Fig. 3, underground hydraulic pressure decoder includes hydraulic control lines, hydraulic pressure decoder, pressure instruction.Hydraulic control lines mainly transmit hydraulic power and pressure instruction, hydraulic pressure decoder is using 2 two position two-way valve compositions of hydraulic control, it can recognize different pressure instruction sequences, purpose of horizon into is guided power fluid according to different instructions, design of the pressure instruction according to hydraulic pressure decoder, preset pressure signal, different pressure signal sequence pair answers the operation of different layers position.
As Fig. 4, Fig. 5, each layer participate in decoding only with 2 hydraulic lines, each layer of position is controlled by 2 hydraulic lines.By different control pipelines combine 12 (1 and 2 hydraulic control lines), 23,13 can 6 production layers be divided into 3 layer groups：1st layer and z layers, the 3rd layer and the 4th layer, the 5th layer and the 6th layer, each layer of group are controlled by 2 circuits of identical.For example, the 1st, 2 target zones are controlled by line combination 12, the 3rd, 4 target zones be controlled by line combination 23, the 5th, 6 target zones are controlled by line combination 13.2 target zones therein are distinguished, only need to apply different pressure sequence signals.The sequence that the hydraulic control line and pressure instruction of 6 purpose of horizon uses apply is as shown in Figure 2.If to be controlled to the 1st target zone, digital pressure signal first can be applied to pipeline 1, digital pressure signal then is applied to pipeline 2 again；, whereas if to be controlled to the 2nd target zone, digital pressure signal first can be applied to pipeline 2, digital pressure signal then is applied to pipeline 1 again；Other layer positions will not act.
Different pressure sequences are sent by different hydraulic lines, by underground liquid laminate layer position selection decoder pressure sequence instruction of the identification from different pipelines, according to the corresponding instruction in layer position for pre-setting, power fluid is guided into the control valve pocket for needing to be operated, the selection and control of destination layer position is realized.
By taking 3 pipeline line groups 12 therein (1 and 2 hydraulic control lines) as an example, hydraulic line 1 and 2 is realized as follows to the selection control process of the 1st target zone and the 2nd target zone：If flow operation is carried out to l target zones,Apply high-voltage signal on hydraulic control lines 1 first using ground hydraulic dynamical system,High-voltage signal flows to the control chamber of normally closed type two position two-way valve 5# by two position two-way valve 4# open in usual,Turn on two position two-way valve 5#,Now again to applying high-voltage signal on hydraulic control lines 2#,Hydraulic control signal controls oil pocket by two position two-way valve 4# right-hand members open in usual,Disconnect two position two-way valve 4# open in usual,Due to continuing to high pressure on hydraulic control lines 1,Two position two-way valve 4# open in usual cannot pressure release,Control pipeline interstitial fluid force feed between two position two-way valve open in usual 4 and normally closed type two position two-way valve 5# will not flow back,Normally closed type two position two-way valve 5 keeps it turned on,Hydraulic oil in hydraulic control lines 2 flows to decoding control pipeline 6# by two position two-way valve 5# open in usual,Realize the decoding and manipulation of this layer.After completing decoding, hydraulic control lines l, 2 hydraulic fluid pressure zero, it is 0 that two position two-way valve open in usual 4 controls cavity pressure, two position two-way valve 4# open in usual resets, two position two-way valve 4# open in usual is in opening, the hydraulic oil of normally closed type two position two-way valve 5# control chambers flows back to hydraulic control lines l by two position two-way valve 4# open in usual, and normally closed type two position two-way valve 5# is closed, and simultaneously closes off target zone.If flow operation is carried out to the 2nd target zone, high-voltage signal is applied on hydraulic control lines 2 first using ground hydraulic dynamical system.High-voltage signal flows to the control chamber of normally closed type two position two-way valve 8# by two position two-way valve 7# open in usual, turn on two position two-way valve 8#, now again to applying high-voltage signal on hydraulic control lines 1, hydraulic control signal controls oil pocket by two position two-way valve 7# right-hand members open in usual, disconnect two position two-way valve open in usual 7, due to continuing to high pressure on hydraulic control lines 2, two position two-way valve 7# open in usual cannot pressure release, control pipeline interstitial fluid force feed between two position two-way valve 7# open in usual and normally closed type two position two-way valve 8# will not flow back, normally closed type two position two-way valve 8# keeps it turned on, hydraulic oil in hydraulic control lines 1 flows to decoding control pipeline 9# by two position two-way valve 8# open in usual, complete the decoding and manipulation of this layer.After completing decoding, hydraulic control lines l, 2 hydraulic fluid pressure zero, it is 0 that two position two-way valve 7# open in usual controls cavity pressure, two position two-way valve open in usual 7 resets, two position two-way valve 7# open in usual is in opening, the hydraulic oil of normally closed type two position two-way valve 8# control chambers flows back to hydraulic control lines 1 by two position two-way valve 7# open in usual, and normally closed type two position two-way valve 8# is closed, and simultaneously closes off target zone.Other line groups 23 and line group 13 pairs the 3rd, 4 target zones and the 5th, decoding of 6 target zones and manipulation process are identical with the control mechanism of above-mentioned line group 12 pairs the 1st, 2 target zones.
Claims (7)
1. a kind of intelligent well completion downhole flow valve hydraulic control system, it is characterized in that：The wellhead hydraulic power and signal generating system provide hydraulic power and hydraulic pressure signal simultaneously, and signal is made up of invalid signals and useful signal.
2. a kind of intelligent well completion downhole flow valve hydraulic control system according to claim 1, it is characterized in that：One threshold pressure of the set-up of control system, less than this threshold pressure, system regards as invalid signals, or be spurious signal, downhole system is not worked, when useful signal refers to that system pressure reaches certain value, this pressure is regarded as useful signal by downhole system.
3. a kind of intelligent well completion downhole flow valve hydraulic control system according to claim 1, it is characterized in that：The hydraulic power and signal generating system provide the power that underground performs original paper on ground, while providing the hydraulic pressure signal of down well placement control.
4. a kind of intelligent well completion downhole flow valve hydraulic control system according to claim 1, it is characterized in that：The control system is made up of hydraulic oil source, power set and overflow valve group, and the system can provide 2 standardized nominal pressures, threshold pressure, high pressure to underground, and be prevented from interference of the invalid signals to underground working.
5. a kind of intelligent well completion downhole flow valve hydraulic control system according to claim 1, it is characterized in that：The hydraulic pressure signal is made up of invalid signals and useful signal；System pressure is zero to regard as invalid signals, and downhole system is not worked, and when useful signal refers to that system pressure reaches certain value (pressure with underground hydraulic pressure decoder design is relevant), this pressure is regarded as effective hydraulic pressure signal by downhole system.
6. a kind of intelligent well completion downhole flow valve hydraulic control system according to claim 1, it is characterized in that：The underground hydraulic pressure decoder includes hydraulic control lines, hydraulic pressure decoder, pressure instruction.
7. a kind of intelligent well completion downhole flow valve hydraulic control system according to claim 1, it is characterized in that：The hydraulic control lines mainly transmit hydraulic power and pressure instruction, hydraulic pressure decoder is using 2 two position two-way valve compositions of hydraulic control, it can recognize different pressure instruction sequences, purpose of horizon into is guided power fluid according to different instructions, design of the pressure instruction according to hydraulic pressure decoder, preset pressure signal, different pressure signal sequence pair answers the operation of different layers position.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510865107.7A CN106812498A (en) | 2015-12-01 | 2015-12-01 | A kind of intelligent well completion downhole flow valve hydraulic control system |
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| CN201510865107.7A CN106812498A (en) | 2015-12-01 | 2015-12-01 | A kind of intelligent well completion downhole flow valve hydraulic control system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356899A (en) * | 2018-11-06 | 2019-02-19 | 中国石油大学(华东) | A kind of three pipeline controls the underground hydraulic pressure system of six layers of position sliding sleeve |
| CN111608607A (en) * | 2020-05-25 | 2020-09-01 | 中国海洋石油集团有限公司 | Intelligent well isolation device and use method thereof |
| CN111663922A (en) * | 2020-04-23 | 2020-09-15 | 中国海洋石油集团有限公司 | Underground decoder system |
| CN111663921A (en) * | 2020-04-23 | 2020-09-15 | 中国海洋石油集团有限公司 | Underground hydraulic system with three pipelines controlling six-layer sliding sleeve |
| CN114109308A (en) * | 2021-11-26 | 2022-03-01 | 西南石油大学 | Intelligent well sliding sleeve target horizon selection hydraulic control system and method |
| CN115898344A (en) * | 2023-02-21 | 2023-04-04 | 西南石油大学 | Flow control system and method for underground stroke control |
-
2015
- 2015-12-01 CN CN201510865107.7A patent/CN106812498A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356899A (en) * | 2018-11-06 | 2019-02-19 | 中国石油大学(华东) | A kind of three pipeline controls the underground hydraulic pressure system of six layers of position sliding sleeve |
| CN111663922A (en) * | 2020-04-23 | 2020-09-15 | 中国海洋石油集团有限公司 | Underground decoder system |
| CN111663921A (en) * | 2020-04-23 | 2020-09-15 | 中国海洋石油集团有限公司 | Underground hydraulic system with three pipelines controlling six-layer sliding sleeve |
| CN111663922B (en) * | 2020-04-23 | 2022-07-01 | 中国海洋石油集团有限公司 | Underground decoder system |
| CN111608607A (en) * | 2020-05-25 | 2020-09-01 | 中国海洋石油集团有限公司 | Intelligent well isolation device and use method thereof |
| CN114109308A (en) * | 2021-11-26 | 2022-03-01 | 西南石油大学 | Intelligent well sliding sleeve target horizon selection hydraulic control system and method |
| CN114109308B (en) * | 2021-11-26 | 2023-06-16 | 西南石油大学 | Intelligent well sliding sleeve target horizon selection hydraulic control system and method |
| CN115898344A (en) * | 2023-02-21 | 2023-04-04 | 西南石油大学 | Flow control system and method for underground stroke control |
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Application publication date: 20170609 |
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