CN203531870U - Downhole operation tubular column capable of realizing ground control - Google Patents
Downhole operation tubular column capable of realizing ground control Download PDFInfo
- Publication number
- CN203531870U CN203531870U CN201320745792.6U CN201320745792U CN203531870U CN 203531870 U CN203531870 U CN 203531870U CN 201320745792 U CN201320745792 U CN 201320745792U CN 203531870 U CN203531870 U CN 203531870U
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- hole
- fixed
- water injection
- control switch
- downhole
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Abstract
The utility model discloses a downhole operation tubular column capable of realizing ground control and mainly aims to solve the problem that an existing water nozzle for separated layer water injection of oil fields cannot be adjusted on the ground as required. The downhole operation tubular column is characterized in that a plurality of water injection layer packers and a plurality of downhole pressure-controlled switches are sequentially fixed on a downhole, and the water injection layer packers are tensioned in an annular cavity; a plurality of water injection liquid discharge holes are formed in the outer wall of each downhole pressure-controlled switch, an ultrasonic sensor is fixed on a central liquid flow channel of each downhole pressure-controlled switch, an ultrasonic receiving circuit consisting of noninverting amplifiers is fixed on a control circuit board, and a signal output end of the ultrasonic receiving circuit is connected to a signal input end of an analog to digital converter on the control circuit board; a water injection pipe is fixed at a water injection layer, a cable conduit is arranged in the water injection pipe, and an ultrasonic signal generator is fixed at one end of the cable conduit. According to the downhole operation tubular column, the water injection quantity of each downhole layer can be adjusted dynamically on the ground according to requirements for separated layer water injection of the oil fields.
Description
Technical field
The utility model relates to a kind of device being applied in oil-gas field development field.
Background technology
Along with the exploitation for many years in oil field, the moisture content of producing oil reservoir increases gradually, and this is because in the past in the oil recovery process of many years, for guaranteeing that strata pressure is constant, needs the water that adapt toward injection in stratum in extraction crude oil.The mode that water filling at present generally adopts is that the water injection rate of definite each water filling interval, regulates afterwards down-hole and inject water nozzle on the ground, connects into water injection string G.I.H.But the defect that this water injection string exists is, once waterflooding requirement changes, can not at well head place, regulate the aperture of injecting water nozzle, can only water injection string be brought up and be adjusted from down-hole by underground work, task difficulty and cost are all higher.
Summary of the invention
In order to solve the technical problem of mentioning in background technology, the utility model provides a kind of ground control underground work pipe column of realizing, this kind of underground work pipe column is simple in structure, can adjust dynamically on the ground the injected water volume of each layer of down-hole according to the needs of separated-zone water infection oil field.
The technical solution of the utility model is: this kind can be realized ground control underground work pipe column, comprise down-hole casing, in down-hole casing, be fixed with shaft bottom, its unique distinction is: in down-hole casing, on shaft bottom, be fixed with successively some water filling interval packers and some down-holes votage control switch device, between the votage control switch device of some down-holes, by connected pipes, connect.The structure that water filling interval packer is ring seal, is fixed on the two ends of down-hole votage control switch device, in the toroidal cavity that water filling interval packer tensioner forms between the inwall of down-hole casing and the outer wall of down-hole votage control switch device; On the outer wall of down-hole votage control switch device, have some water filling fluid holes, on the central liquid circulation road of down-hole votage control switch device, be fixed with ultrasonic sensor, on the control circuit board of down-hole votage control switch device, be fixed with the ultrasonic wave receiving circuit that adopts in-phase amplifier to form, the ultrasonic signal of being exported by described ultrasonic sensor is sent to the ultrasonic signal input of described ultrasonic wave receiving circuit through signal cable, the signal output part of described ultrasonic wave receiving circuit is connected to the input end of analog signal of the analog-digital converter on described control circuit board.
By well head to the water filling interval place in down-hole casing, be fixed with a water injection pipe, have a cable conduit that is built-in with the sealed insulation of cable in described water injection pipe, a ultrasonic signal generator is fixed in the end of described cable conduit; In the lower end of water injection pipe, approach water filling port place and be fixed with packer, to realize, the annular space between down-hole casing and water injection pipe is sealed.
The utlity model has following beneficial effect: utilize this kind of underground work pipe column to carry out oil-field flooding operation, when needs are adjusted the water injection rate of different intervals, on ground, directly by cable, send control signal control ultrasonic signal generator and send the ultrasonic wave that is loaded with different injection interval switching signal or aperture adjustment signal, these ultrasonic wave will be at water transmission, owing to being fixed with ultrasonic sensor on the central liquid circulation road at down-hole votage control switch device, these ultrasonic signals pass to the control circuit board of down-hole votage control switch device after will being received by sensor.Single-chip microcomputer on control circuit board has been identified the control information being loaded with in these ultrasonic signals, just can adjust according to the requirement on ground the aperture of the dial switch valve of down-hole votage control switch device, open or close the dial switch valve of a certain interval, thereby realize and can adjust dynamically on the ground the injected water volume of each layer of down-hole according to the needs of separated-zone water infection oil field, and carry out Job Operations without again proposing again water injection string, saved a large amount of manpower and operating cost.
Accompanying drawing explanation:
Fig. 1 is structural representation of the present utility model.
1-shaft bottom in figure, 2-down-hole casing, 3-control circuit board, 4-ultrasonic sensor, 5-dial switch valve, 6-down-hole votage control switch device, 7-ultrasonic signal generator, 8-water filling interval packer, 9-cable conduit, 10-water injection pipe, 11-packer, 12-motor driving circuit board, 13-water filling fluid hole, 14-dial switch electrohydraulic valve actuator machine.
The specific embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, this kind can be realized ground control underground work pipe column, comprise down-hole casing 2, in down-hole casing 2, be fixed with shaft bottom 1, except these common structures, the unique distinction of the technical program is: in down-hole casing 2, be fixed with successively some water filling interval packers 8 and some down-holes votage control switch device 6 on shaft bottom 1.Down-hole votage control switch device described here is exactly the downhole on-off actuator for water detection water-blocking operation, there is dial switch valve 5, dial switch electrohydraulic valve actuator machine 14, motor driving circuit board 12 and control circuit board 3, but, what this downhole on-off actuator adopted is that pressure sensor is experienced fluid pressure at inner chamber, this structure is inapplicable in the technical program, therefore, to this existing structure this programme, when applying, need to make modification.
As shown in the figure, between some down-holes votage control switch device 6, by connected pipes, connect; Water filling interval packer 8 is the structure of ring seal, is fixed on the two ends of down-hole votage control switch device 6, in the toroidal cavity that water filling interval packer 8 tensioners form between the inwall of down-hole casing 2 and the outer wall of down-hole votage control switch device 6.On the outer wall of down-hole votage control switch device 6, have some water filling fluid holes 13, on the central liquid circulation road of down-hole votage control switch device 6, be fixed with ultrasonic sensor 4, on the control circuit board 3 of down-hole votage control switch device 6, be fixed with the ultrasonic wave receiving circuit that adopts in-phase amplifier to form, ultrasonic signal by described ultrasonic sensor 4 outputs is sent to the ultrasonic signal input of described ultrasonic wave receiving circuit through signal cable, the signal output part of described ultrasonic wave receiving circuit is connected to the input end of analog signal of the analog-digital converter on described control circuit board 3.
By well head to the water filling interval place in down-hole casing 2, be fixed with a water injection pipe 10, have a cable conduit 9 that is built-in with the sealed insulation of cable in described water injection pipe 10, a ultrasonic signal generator 7 is fixed in the end of described cable conduit 9; In the lower end of water injection pipe 10, approach water filling port place and be fixed with packer 11, to realize, the annular space between down-hole casing 2 and water injection pipe 10 is sealed.
During use, on ground, directly by cable, send control signal control ultrasonic signal generator and send the ultrasonic wave that is loaded with different injection interval switching signal or aperture adjustment signal, these ultrasonic wave will be at water transmission, owing to being fixed with ultrasonic sensor on the central liquid circulation road at down-hole votage control switch device, these ultrasonic signals pass to the control circuit board of down-hole votage control switch device after will being received by sensor.Single-chip microcomputer on control circuit board has been identified the control information being loaded with in these ultrasonic signals, just can according to the requirement on ground, adjust the aperture of the dial switch valve of down-hole votage control switch device, opens or closes the dial switch valve of a certain interval.
Claims (1)
1. can realize ground control underground work pipe column for one kind, comprise down-hole casing (2), in down-hole casing (2), be fixed with shaft bottom (1), it is characterized in that: in down-hole casing (2), on shaft bottom (1), be fixed with successively some water filling interval packers (8) and some down-hole votage control switch devices (6), between some down-hole votage control switch devices (6), by connected pipes, connect, water filling interval packer (8) is the structure of ring seal, be fixed on the two ends of down-hole votage control switch device (6), in the toroidal cavity that water filling interval packer (8) tensioner forms between the inwall of down-hole casing (2) and the outer wall of down-hole votage control switch device (6), on the outer wall of down-hole votage control switch device (6), have some water filling fluid holes (13), on the central liquid circulation road of down-hole votage control switch device (6), be fixed with ultrasonic sensor (4), on the control circuit board (3) of down-hole votage control switch device (6), be fixed with the ultrasonic wave receiving circuit that adopts in-phase amplifier to form, ultrasonic signal by described ultrasonic sensor (4) output is sent to the ultrasonic signal input of described ultrasonic wave receiving circuit through signal cable, the signal output part of described ultrasonic wave receiving circuit is connected to the input end of analog signal of the analog-digital converter on described control circuit board (3),
By well head to the water filling interval place in down-hole casing (2), be fixed with a water injection pipe (10), in described water injection pipe (10), have a cable conduit (9) that is built-in with the sealed insulation of cable, a ultrasonic signal generator (7) is fixed in the end of described cable conduit (9); In the lower end of water injection pipe (10), approach water filling port place and be fixed with packer (11), to realize, the annular space between down-hole casing (2) and water injection pipe (10) is sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320745792.6U CN203531870U (en) | 2013-11-25 | 2013-11-25 | Downhole operation tubular column capable of realizing ground control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320745792.6U CN203531870U (en) | 2013-11-25 | 2013-11-25 | Downhole operation tubular column capable of realizing ground control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203531870U true CN203531870U (en) | 2014-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320745792.6U Expired - Fee Related CN203531870U (en) | 2013-11-25 | 2013-11-25 | Downhole operation tubular column capable of realizing ground control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203531870U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832165A (en) * | 2015-05-06 | 2015-08-12 | 中国石油集团渤海钻探工程有限公司 | Wellhead sound wave emission device |
-
2013
- 2013-11-25 CN CN201320745792.6U patent/CN203531870U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832165A (en) * | 2015-05-06 | 2015-08-12 | 中国石油集团渤海钻探工程有限公司 | Wellhead sound wave emission device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20141125 |
|
| EXPY | Termination of patent right or utility model |