CA2233480A1 - Electrical/hydraulic controller for downhole tools - Google Patents
Electrical/hydraulic controller for downhole tools Download PDFInfo
- Publication number
- CA2233480A1 CA2233480A1 CA 2233480 CA2233480A CA2233480A1 CA 2233480 A1 CA2233480 A1 CA 2233480A1 CA 2233480 CA2233480 CA 2233480 CA 2233480 A CA2233480 A CA 2233480A CA 2233480 A1 CA2233480 A1 CA 2233480A1
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- Canada
- Prior art keywords
- downhole
- downhole tools
- line
- electrical
- tool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000000034 method Methods 0.000 claims abstract description 7
- 230000003213 activating effect Effects 0.000 claims abstract 3
- 239000012530 fluid Substances 0.000 claims description 11
- 230000000903 blocking effect Effects 0.000 claims 1
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
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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)
- Earth Drilling (AREA)
- Auxiliary Devices For Machine Tools (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention is a method and apparatus for selectively activating and deactivating multiple, hydraulically-driven downhole tools (12, 14) with a system containing a single electrical line (30) and a single hydraulic line (28) which are connected in parallel to individual controllers (20, 22) associated with each down hole tool.
Description
W O 98/0905S PCT~US97/15445 TITLE: ELECTRUCA~L~HYD~L~ULIC C O NTR OLLER FO ~ D O W~H O LE T O OLS
FTFT,n O F T H~ n~F,~TIO N
This invention relates generally to the delivery of electrical signals and hydraulic pressure to downhole tools and~or completion equipment and more particularly to the selective operation of multiple downhole tools by l~ti~i7ing single electrical and hydraulic lines.
BACKGROUND OF T~ ïlwENTIQN
During the drilling, completion and production phases required to produce hydrocarbons (oil and gas) from earth formations, several different downhole tools and completion equipment are used. The wellbore, which is typically between nine and twelve inches in ~ metf~r, provides limited capacity for running electrical and hydraulic lines to such downhole tools. Branch or lateral wellbores often are drilled from a trunk or main wellbore to form deviated and/or horizontal wellbores for improving production of hydrocarbons from the subsurface formations.
It is expensive and time consuming to run a single tool downhole, use it and then retrieve it before pursuing other operations. In some operations, such as completions, the tool cannot be retrieved. Therefore, a tool string containing multiple tools is formed at the SU~;~ 111 UTE SHEET (RULE 26) W O 981'~5~55 PCT~US97/15445 surface and run in hole to perform a number of operations. In conventional operations, a separate hydraulic line is connected to each tool before running in hole. The other end of each hydraulic line is connected to an isolation valve which in tum is connected to a hydraulic pump located at the surface. To operate a specific tool in the string, the isolation valve that connects the specific hydraulic line to the hydraulic pump is opened. Pressure is applied and the isolation valve is closed to trap the hydraulic ~les~7ule. Thus, during downhole operations, each tool in the string can be operated independently of the other tools by lltili7ing such tool's independent hydraulic line.
Due to the small space available to run hydraulic lines downhole, some operations run more than one tool on the same hydraulic lines. The drawback of this system, however, is that the tools are either all activated or all deactivated simultaneously. They are not independently operable.
It is desirable to run multiple tools from a single hydraulic line but it would be additionally advantageous if the multiple tools could be controlled independently of each other.
The present invention addresses this deficiency of the prior art and provides a system that delivers hydraulic pressure and electrical signals independently to multiple downhole tools lltili7ing a single hydraulic line and a single electrical line. The system is applicable to hydrological ~environmental ground water) testing as well as to hydrocarbon operations.
SUBSTITUTE SHEET (RULE 26) W O 9~ 0S5 PCTrUS97/15445 SUMM~RY OF TI~, IlWENTION
This invention provides an apparatus and a method for delivery of hydraulic fluid/pressure and electrical signals to multiple downhole tools via a single hydraulic line and a single electrical line by connecting the lines in parallel to each of the downhole tool controllers and sending signals to the downhole tool controllers for operating controls within the controllers to allow the passage of hydraulic iluid/pressure to activate/deactivate the associated tools.
B~T~F D~,~:CRTPIION OF T~T~ DI~W~T~GS
For a detailed underet~n~ing of the present invention, references should be made to the following detailed description of the p~ -ed embodiment, taken in conjunction with the accompanying drawings, in which like elements have been given like numerals, and wherein:
FIG. 1 shows a schematic diagram of a typical wellsite wherein a completion string utilizes~hé~ appara-tus of the present invention to operate multiple downhole tools from single hydraulic and electrical lines.
FIG. 2A is a partial cross-sectional view of a downhole controller of the prcsent invention.
SUBSTITUTE SHEET ~RULE 26) W O 98~ 0S5 PCTAUS97/15445 FIG. 2B shows the top view of the downhole controller of the present invention.
FIG. 2C is a cross-sectional view of FIG. 2A showing the hydraulic connection to the downhole tool.
FIG. 2D shows the bottom view of the downhole controller of the present invention.
FIG. 3 is an illustration of a typical downhole tool string co"l;.i.,il-g multiple tools and incorporating the apparatus of the present invention.
DFT~T~,~D DF'~SCRTPTION OF T~F PR13FF'RRl~,D F'MRODIMI~NT
FIG. 1 shows a schematic of a controller systern 10, in operation at a typical wellsite, for the delivery of hydraulic ~ iUl~ to completion equipment or downhole tools, such as a packer 12 and a sliding sleeve 14, and for tl~l~lniLlillg electrical signals between a control unit 16, located on the surface 18, and controllers 20 and 22 associated with the packer 12 and the sliding sleeve 14, respectively.
Every hydraulically-operated tool needs a controller which can be either integral to the tool or a separate device. For ease of unde~et~n(ling and without any intent to limit the scope of thc invention, FIGs. 1-3 depict the controllers as separate dcvices.
S~J~;~ 111 LJTE SHEET (RULE 26) =
W 0~ 30S5 PCTrUS97115445 As~shown in FIG. 1, hydraulic fluid (not shown) from a supply source 24 is pumped by a hydraulic pump 26 through a single hydraulic line 28 downhole to a completion or tool string 29. ~imi1~rly, electrical signals are communicated between the control unit 16 and the completion of tool string 29, which contains downhole tool controllers 20 and 22, over a single electrical line 30. The hydraulic line 28 and the electrical line 30 can be contained within a single tube (not shown) or run downhole as individual lines as sho~Am in FIG. 1. A
typical configuration for completion operations, as shown in FIG. 1, would run the lines 28 and 30 between an outer surface 32 of a completion string 29 and the inner surface of the casing 34 and the wall 36 of the open hole 38. The placement of the lines 28 and 30 is meant by way of exarnple and is not meant to limit the scope of the invention.
FIG. 2A shows a partial cross-sectional view of a downhole tool controller 40, such as the controllers 20 and 22 shown in FIG. 1. The electrical line 30 enters the controller 40 through an electrical inlet port 42 and is connected in parallel to an electronic circuit board 44 before exiting the controller 40 through an electrical outlet port 46 (shown in FIG. 2D). A
solenoid valve 48 is connected to the electronic circuit board 44 via an electrical line 50.
The hydraulic line 28 enters the controller 40 through an hydraulic inlet port 52 (shown in FIG. 2B) and is connected in parallel through a hydraulic tool line ~3 (shown in FIG. 2C) to the downhole tool, such as the packer 12 or the sliding sleeve 14 shown in FIG.
SIJ~ JTE SHEET (RULE 26) W O 98/09~3~ PCTr~S97tl5445 1. As shown in FIG. 2D, the hydraulic line 28 then exits the controller 40 through a hydraulic outlet port 54 and the hydraulic tool line 53 exits the controller 40 through a hydraulic tool outlet port S~.
An electrical signal (not shown~ is sent from the control unit 16, shown in FIG. 1, down the electrical line 30 to the first controller 20 in the downlhole string 29. The electronics (electronic circuit board 44 as shown in FIG. 2A) within the controller 20 ~letennine if the signal is addressing the first controller 20. If the first controller 20 is being addressed, the electronics in the controller 20 direct the power from the electrical signal to move the solenoid valve 48 (FIG. 2A) to allow the hydraulic fluid/pressure in the hydraulic line 28 to pass through the controller 20 to the first tool, the packer 12, which is associated with the controller 20. The hydraulic l)ressw~/fluid is then available to operate the connected tool, the packer 12.
If the f1rst controller 20 is not being addressed, then the solenoid valve 48 (FIG. 2A) remains in its closed position and the associated tool, the packer 12, is not activated.
The electrical signal continues through the electrical line 30 to the next controller 22, as shown in FIG. 1. Regardless of the action of the previous controller 20, the second controller 22 goes through the same sequence of operations to deterrnine if it should activate the second tool, the sliding sleeve 14, by moving the solenoid valve 48 ~FIG. 2A~ in the SUBSTITUTE ~l l__ l (RULE 26) W O 98/09055 PCTrUS97/15445 controller 22 to allow the hydraulic fluid/ples~ul~ to pass through the solenoid valve 48 to the sliding sleeve 14.
In similar fashion, the electrical signal and the hydraulic fluid/pl~s~ continue downhole to each of the controllers 40 in the completion or tool string 29. Because the individual tool controllers 40 are connected in parallel to the hydraulic line 28 and the electrical line 30, multiple tools/equipment in a tooVcompletion string 29 can be operated selectively and individually.
FIG. 3 illustrates a typical tool string 29 cont:3ining a first controller 60, a sliding sleeve 62, a second controller 64, a packer 6~, a third controller 68 and a sliding sleeve/choke 70 which can all be selectively operated via a single hydraulic line 72 and a single electrical line 74.
Various telemetry methods can be used to send comm~nfl~ to the downhole tool controllers 40 such as mud pulse, electromagnetic pulse, acoustic pulse, electrical pulse and others. The electrical signal described in the preferred embodiment is meant by way of example and is not meant to limit the scope of the i~vention.
Likewise, the valve shown in FIG. 2A is a solenoid valve 48, which is well known in the industry, is meant by way of example without limiting the invention.
SlJ~ 111 IJTE SHEET (RULE 26) W O 98~ 0S5 PCTAUS97/15445 While the foregoing disclosure is directed to the preferred embodiments of the invention, various modifications will be apparent to those skilled in the art. It is intended that all variations within the scope and spirit of the appended claims be embraced by the foregoing disclosure.
SUII~S 111 IJTE SHEE~ (RULE 26)
FTFT,n O F T H~ n~F,~TIO N
This invention relates generally to the delivery of electrical signals and hydraulic pressure to downhole tools and~or completion equipment and more particularly to the selective operation of multiple downhole tools by l~ti~i7ing single electrical and hydraulic lines.
BACKGROUND OF T~ ïlwENTIQN
During the drilling, completion and production phases required to produce hydrocarbons (oil and gas) from earth formations, several different downhole tools and completion equipment are used. The wellbore, which is typically between nine and twelve inches in ~ metf~r, provides limited capacity for running electrical and hydraulic lines to such downhole tools. Branch or lateral wellbores often are drilled from a trunk or main wellbore to form deviated and/or horizontal wellbores for improving production of hydrocarbons from the subsurface formations.
It is expensive and time consuming to run a single tool downhole, use it and then retrieve it before pursuing other operations. In some operations, such as completions, the tool cannot be retrieved. Therefore, a tool string containing multiple tools is formed at the SU~;~ 111 UTE SHEET (RULE 26) W O 981'~5~55 PCT~US97/15445 surface and run in hole to perform a number of operations. In conventional operations, a separate hydraulic line is connected to each tool before running in hole. The other end of each hydraulic line is connected to an isolation valve which in tum is connected to a hydraulic pump located at the surface. To operate a specific tool in the string, the isolation valve that connects the specific hydraulic line to the hydraulic pump is opened. Pressure is applied and the isolation valve is closed to trap the hydraulic ~les~7ule. Thus, during downhole operations, each tool in the string can be operated independently of the other tools by lltili7ing such tool's independent hydraulic line.
Due to the small space available to run hydraulic lines downhole, some operations run more than one tool on the same hydraulic lines. The drawback of this system, however, is that the tools are either all activated or all deactivated simultaneously. They are not independently operable.
It is desirable to run multiple tools from a single hydraulic line but it would be additionally advantageous if the multiple tools could be controlled independently of each other.
The present invention addresses this deficiency of the prior art and provides a system that delivers hydraulic pressure and electrical signals independently to multiple downhole tools lltili7ing a single hydraulic line and a single electrical line. The system is applicable to hydrological ~environmental ground water) testing as well as to hydrocarbon operations.
SUBSTITUTE SHEET (RULE 26) W O 9~ 0S5 PCTrUS97/15445 SUMM~RY OF TI~, IlWENTION
This invention provides an apparatus and a method for delivery of hydraulic fluid/pressure and electrical signals to multiple downhole tools via a single hydraulic line and a single electrical line by connecting the lines in parallel to each of the downhole tool controllers and sending signals to the downhole tool controllers for operating controls within the controllers to allow the passage of hydraulic iluid/pressure to activate/deactivate the associated tools.
B~T~F D~,~:CRTPIION OF T~T~ DI~W~T~GS
For a detailed underet~n~ing of the present invention, references should be made to the following detailed description of the p~ -ed embodiment, taken in conjunction with the accompanying drawings, in which like elements have been given like numerals, and wherein:
FIG. 1 shows a schematic diagram of a typical wellsite wherein a completion string utilizes~hé~ appara-tus of the present invention to operate multiple downhole tools from single hydraulic and electrical lines.
FIG. 2A is a partial cross-sectional view of a downhole controller of the prcsent invention.
SUBSTITUTE SHEET ~RULE 26) W O 98~ 0S5 PCTAUS97/15445 FIG. 2B shows the top view of the downhole controller of the present invention.
FIG. 2C is a cross-sectional view of FIG. 2A showing the hydraulic connection to the downhole tool.
FIG. 2D shows the bottom view of the downhole controller of the present invention.
FIG. 3 is an illustration of a typical downhole tool string co"l;.i.,il-g multiple tools and incorporating the apparatus of the present invention.
DFT~T~,~D DF'~SCRTPTION OF T~F PR13FF'RRl~,D F'MRODIMI~NT
FIG. 1 shows a schematic of a controller systern 10, in operation at a typical wellsite, for the delivery of hydraulic ~ iUl~ to completion equipment or downhole tools, such as a packer 12 and a sliding sleeve 14, and for tl~l~lniLlillg electrical signals between a control unit 16, located on the surface 18, and controllers 20 and 22 associated with the packer 12 and the sliding sleeve 14, respectively.
Every hydraulically-operated tool needs a controller which can be either integral to the tool or a separate device. For ease of unde~et~n(ling and without any intent to limit the scope of thc invention, FIGs. 1-3 depict the controllers as separate dcvices.
S~J~;~ 111 LJTE SHEET (RULE 26) =
W 0~ 30S5 PCTrUS97115445 As~shown in FIG. 1, hydraulic fluid (not shown) from a supply source 24 is pumped by a hydraulic pump 26 through a single hydraulic line 28 downhole to a completion or tool string 29. ~imi1~rly, electrical signals are communicated between the control unit 16 and the completion of tool string 29, which contains downhole tool controllers 20 and 22, over a single electrical line 30. The hydraulic line 28 and the electrical line 30 can be contained within a single tube (not shown) or run downhole as individual lines as sho~Am in FIG. 1. A
typical configuration for completion operations, as shown in FIG. 1, would run the lines 28 and 30 between an outer surface 32 of a completion string 29 and the inner surface of the casing 34 and the wall 36 of the open hole 38. The placement of the lines 28 and 30 is meant by way of exarnple and is not meant to limit the scope of the invention.
FIG. 2A shows a partial cross-sectional view of a downhole tool controller 40, such as the controllers 20 and 22 shown in FIG. 1. The electrical line 30 enters the controller 40 through an electrical inlet port 42 and is connected in parallel to an electronic circuit board 44 before exiting the controller 40 through an electrical outlet port 46 (shown in FIG. 2D). A
solenoid valve 48 is connected to the electronic circuit board 44 via an electrical line 50.
The hydraulic line 28 enters the controller 40 through an hydraulic inlet port 52 (shown in FIG. 2B) and is connected in parallel through a hydraulic tool line ~3 (shown in FIG. 2C) to the downhole tool, such as the packer 12 or the sliding sleeve 14 shown in FIG.
SIJ~ JTE SHEET (RULE 26) W O 98/09~3~ PCTr~S97tl5445 1. As shown in FIG. 2D, the hydraulic line 28 then exits the controller 40 through a hydraulic outlet port 54 and the hydraulic tool line 53 exits the controller 40 through a hydraulic tool outlet port S~.
An electrical signal (not shown~ is sent from the control unit 16, shown in FIG. 1, down the electrical line 30 to the first controller 20 in the downlhole string 29. The electronics (electronic circuit board 44 as shown in FIG. 2A) within the controller 20 ~letennine if the signal is addressing the first controller 20. If the first controller 20 is being addressed, the electronics in the controller 20 direct the power from the electrical signal to move the solenoid valve 48 (FIG. 2A) to allow the hydraulic fluid/pressure in the hydraulic line 28 to pass through the controller 20 to the first tool, the packer 12, which is associated with the controller 20. The hydraulic l)ressw~/fluid is then available to operate the connected tool, the packer 12.
If the f1rst controller 20 is not being addressed, then the solenoid valve 48 (FIG. 2A) remains in its closed position and the associated tool, the packer 12, is not activated.
The electrical signal continues through the electrical line 30 to the next controller 22, as shown in FIG. 1. Regardless of the action of the previous controller 20, the second controller 22 goes through the same sequence of operations to deterrnine if it should activate the second tool, the sliding sleeve 14, by moving the solenoid valve 48 ~FIG. 2A~ in the SUBSTITUTE ~l l__ l (RULE 26) W O 98/09055 PCTrUS97/15445 controller 22 to allow the hydraulic fluid/ples~ul~ to pass through the solenoid valve 48 to the sliding sleeve 14.
In similar fashion, the electrical signal and the hydraulic fluid/pl~s~ continue downhole to each of the controllers 40 in the completion or tool string 29. Because the individual tool controllers 40 are connected in parallel to the hydraulic line 28 and the electrical line 30, multiple tools/equipment in a tooVcompletion string 29 can be operated selectively and individually.
FIG. 3 illustrates a typical tool string 29 cont:3ining a first controller 60, a sliding sleeve 62, a second controller 64, a packer 6~, a third controller 68 and a sliding sleeve/choke 70 which can all be selectively operated via a single hydraulic line 72 and a single electrical line 74.
Various telemetry methods can be used to send comm~nfl~ to the downhole tool controllers 40 such as mud pulse, electromagnetic pulse, acoustic pulse, electrical pulse and others. The electrical signal described in the preferred embodiment is meant by way of example and is not meant to limit the scope of the i~vention.
Likewise, the valve shown in FIG. 2A is a solenoid valve 48, which is well known in the industry, is meant by way of example without limiting the invention.
SlJ~ 111 IJTE SHEET (RULE 26) W O 98~ 0S5 PCTAUS97/15445 While the foregoing disclosure is directed to the preferred embodiments of the invention, various modifications will be apparent to those skilled in the art. It is intended that all variations within the scope and spirit of the appended claims be embraced by the foregoing disclosure.
SUII~S 111 IJTE SHEE~ (RULE 26)
Claims (7)
1. A system for providing hydraulic fluid and electrical signals to multiple hydraulically-driven downhole tools deployed in a wellbore, comprising:
(a) a single hydraulic line for supplying hydraulic fluid to each of the downhole tools;
(b) a single electrical line for supplying electrical power and signals to each of the downhole tools; and plurality of downhole controllers, wherein the controllers are connected in parallel to the single hydraulic line and to the single electrical line and wherein a separate controller is connected to a separate downhole tool.
(a) a single hydraulic line for supplying hydraulic fluid to each of the downhole tools;
(b) a single electrical line for supplying electrical power and signals to each of the downhole tools; and plurality of downhole controllers, wherein the controllers are connected in parallel to the single hydraulic line and to the single electrical line and wherein a separate controller is connected to a separate downhole tool.
2. The system of claim 1, wherein each said controller further comprises:
(a) a valve operable in an open mode for allowing the flow of the hydraulic fluid from the hydraulic line into the downhole tool connected to the controller and in a closed mode for blocking the flow of hydraulic fluid; and (b) A circuit for transmitting a command signal from a remote control unit via the electrical line to operate the valve between the desired open and closed modes to activate and deactivate the tool, respectively.
(a) a valve operable in an open mode for allowing the flow of the hydraulic fluid from the hydraulic line into the downhole tool connected to the controller and in a closed mode for blocking the flow of hydraulic fluid; and (b) A circuit for transmitting a command signal from a remote control unit via the electrical line to operate the valve between the desired open and closed modes to activate and deactivate the tool, respectively.
3. The system of claim 2, further comprising a two-way communication system between the downhole tools and the remote control unit for sending over the electrical line control information to the downhole tools and for receiving status information from the downhole tools.
4. A method for selectively activating a plurality of hydraulically-operated downhole tools via a single hydraulic line and a single electrical line, comprising:
connecting the hydraulic line in parallel to each of the downhole tools;
connecting the electrical line in parallel to each of the downhole tools; sending an activate command via an electrical signal through the electrical line, wherein the activate command is received by each downhole tool and decoded to determine whether the activate command is for this downhole tool; and positioning the valve in the commanded position for the relevant downhole tools, wherein hydraulic fluid flows through the open valve thereby activating the downhole tool.
connecting the hydraulic line in parallel to each of the downhole tools;
connecting the electrical line in parallel to each of the downhole tools; sending an activate command via an electrical signal through the electrical line, wherein the activate command is received by each downhole tool and decoded to determine whether the activate command is for this downhole tool; and positioning the valve in the commanded position for the relevant downhole tools, wherein hydraulic fluid flows through the open valve thereby activating the downhole tool.
5. The method of claim 4, further comprising initializing the valves in the downhole tools to known starting positions.
6. The method of claim 4, further comprising periodically sending a signal from the downhole tool indicating the position of the valve.
7. The method of claim 4, further comprising sending a deactivate command to individual downhole tools, wherein the command is received and decoded by each downhole tool and valves are moved accordingly.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US2466896P | 1996-08-30 | 1996-08-30 | |
| US60/024,668 | 1996-08-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2233480A1 true CA2233480A1 (en) | 1998-03-05 |
Family
ID=21821776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2233480 Abandoned CA2233480A1 (en) | 1996-08-30 | 1997-09-02 | Electrical/hydraulic controller for downhole tools |
Country Status (5)
| Country | Link |
|---|---|
| AU (1) | AU4177197A (en) |
| CA (1) | CA2233480A1 (en) |
| GB (1) | GB2321076A (en) |
| NO (1) | NO981935D0 (en) |
| WO (1) | WO1998009055A1 (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6109357A (en) * | 1997-12-12 | 2000-08-29 | Baker Hughes Incorporated | Control line actuation of multiple downhole components |
| GB2333785B (en) * | 1998-01-28 | 2002-07-31 | Baker Hughes Inc | Remote actuation of downhole tools using vibration |
| GB2335215B (en) * | 1998-03-13 | 2002-07-24 | Abb Seatec Ltd | Extraction of fluids from wells |
| NO306033B1 (en) | 1998-06-05 | 1999-09-06 | Ziebel As | Device and method for independently controlling control devices for regulating fluid flow between a hydrocarbon reservoir and a well |
| AU5601999A (en) * | 1998-11-02 | 2000-05-04 | Halliburton Energy Services, Inc. | Downhole hydraulic power source |
| WO2000029715A1 (en) * | 1998-11-18 | 2000-05-25 | Schlumberger Technology Corporation | Flow control and isolation in a wellbore |
| US6298919B1 (en) * | 1999-03-02 | 2001-10-09 | Halliburton Energy Services, Inc. | Downhole hydraulic path selection |
| US6349770B1 (en) | 2000-01-14 | 2002-02-26 | Weatherford/Lamb, Inc. | Telescoping tool |
| GB2359833B (en) * | 2000-03-04 | 2004-02-18 | Abb Offshore Systems Ltd | Packer system |
| US6668936B2 (en) | 2000-09-07 | 2003-12-30 | Halliburton Energy Services, Inc. | Hydraulic control system for downhole tools |
| WO2002020942A1 (en) * | 2000-09-07 | 2002-03-14 | Halliburton Energy Services, Inc. | Hydraulic control system for downhole tools |
| WO2002029205A1 (en) * | 2000-10-03 | 2002-04-11 | Halliburton Energy Services, Inc. | Hydraulic control system for downhole tools |
| GB2387863B (en) * | 2002-04-17 | 2004-08-18 | Schlumberger Holdings | Inflatable packer and method |
| GB2407595B8 (en) | 2003-10-24 | 2017-04-12 | Schlumberger Holdings | System and method to control multiple tools |
| US9228423B2 (en) | 2010-09-21 | 2016-01-05 | Schlumberger Technology Corporation | System and method for controlling flow in a wellbore |
| US10745998B2 (en) | 2015-04-21 | 2020-08-18 | Schlumberger Technology Corporation | Multi-mode control module |
| CN106593351B (en) * | 2016-12-13 | 2023-04-07 | 中国石油天然气股份有限公司 | Well cementation sliding sleeve |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4636934A (en) * | 1984-05-21 | 1987-01-13 | Otis Engineering Corporation | Well valve control system |
| NO180463C (en) * | 1988-01-29 | 1997-04-23 | Inst Francais Du Petrole | Apparatus and method for controlling at least two flow valves |
| GB9025230D0 (en) * | 1990-11-20 | 1991-01-02 | Framo Dev Ltd | Well completion system |
| US5547029A (en) * | 1994-09-27 | 1996-08-20 | Rubbo; Richard P. | Surface controlled reservoir analysis and management system |
| NO325157B1 (en) * | 1995-02-09 | 2008-02-11 | Baker Hughes Inc | Device for downhole control of well tools in a production well |
-
1997
- 1997-09-02 GB GB9806774A patent/GB2321076A/en not_active Withdrawn
- 1997-09-02 CA CA 2233480 patent/CA2233480A1/en not_active Abandoned
- 1997-09-02 AU AU41771/97A patent/AU4177197A/en not_active Abandoned
- 1997-09-02 WO PCT/US1997/015445 patent/WO1998009055A1/en unknown
-
1998
- 1998-04-29 NO NO981935A patent/NO981935D0/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| AU4177197A (en) | 1998-03-19 |
| GB2321076A8 (en) | 1998-08-10 |
| NO981935L (en) | 1998-04-29 |
| NO981935D0 (en) | 1998-04-29 |
| WO1998009055A1 (en) | 1998-03-05 |
| GB9806774D0 (en) | 1998-05-27 |
| GB2321076A (en) | 1998-07-15 |
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