WO2004070167A1 - Procede et systeme pour se servir d'un systeme a temperatures distribuees dans un puits sous-marin - Google Patents
Procede et systeme pour se servir d'un systeme a temperatures distribuees dans un puits sous-marin Download PDFInfo
- Publication number
- WO2004070167A1 WO2004070167A1 PCT/GB2003/005515 GB0305515W WO2004070167A1 WO 2004070167 A1 WO2004070167 A1 WO 2004070167A1 GB 0305515 W GB0305515 W GB 0305515W WO 2004070167 A1 WO2004070167 A1 WO 2004070167A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical fiber
- rov
- optical
- information
- subsea well
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000013307 optical fiber Substances 0.000 claims abstract description 62
- 230000003287 optical effect Effects 0.000 claims description 30
- 238000004891 communication Methods 0.000 claims description 20
- 238000000253 optical time-domain reflectometry Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 238000002168 optical frequency-domain reflectometry Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 238000001237 Raman spectrum Methods 0.000 description 3
- 238000009529 body temperature measurement Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000005693 optoelectronics Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000005055 memory storage Effects 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/13—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. radio frequency
- E21B47/135—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. radio frequency using light waves, e.g. infrared or ultraviolet waves
Definitions
- the invention generally relates to oil and gas wells. More particularly, the invention relates to a system and method used to provide selective optical communication between a remote location, such as a vessel at the ocean surface, and a subsea well.
- the optical communication can be used to enable the operation of a distributed temperature system in the subsea well.
- Subsea wells provide unique challenges to the oil and gas industry. They are located in extremely harsh environments and, being a substantial distance from the ocean surface, are hard to reach. Nevertheless, despite the environment and location, operators must still obtain as much information from the subsea well as possible (such as temperature, pressure, and chemical properties) in order to monitor the well and take corrective action if necessary. Obtaining this information, however, should be done with as little intervention as possible so as to not disrupt the production of the well.
- a system and method transmit information to or from a subsea well, comprising: deploying an ROV towards the subsea well, optically connecting a first optical fiber that is carried by the RON with a second optical fiber that is located along a section of the subsea well, and transmitting information along the optical fibers to or from a remote location.
- the information may comprise a temperature profile along the section, data from sensors functionally connected to the second optical fiber, or a command.
- FIG. 1 is a schematic of a subsea well including one embodiment of this invention.
- Fig. 2 is a schematic of an RON in optical communication with a subsea well through a connector subassembly on the subsea tree.
- FIG. 1 shows a component of the present invention.
- Tubing 10 is deployed within a subsea well 12 that may include a casing 15.
- Subsea well 12 extends from the ocean floor 14 below the ocean surface 16.
- Tubing 10 is typically suspended from a wellhead 18 by a tubing hanger 20 and may terminate at a subsea tree 22.
- a pipeline 24 is in fluid communication with the tubing 10 and provides fluid communication between the tubing 10 and a remote location (such as the ocean surface 16 or land) so as to enable the transportation of hydrocarbons from the well 12.
- the well 12 intersects at least one formation 26. Hydrocarbons flow from the formation 26 into the tubing 10.
- Casing 15 includes perforations 28 to allow such flow.
- a conduit 30 may be disposed along or within the tubing 10 and may be attached to tubing 10 such as by clamps. Alternatively, conduit 30 may be deployed within or behind casing 15. Conduit 30 is in fluid communication with a passageway 32 in the tubing hanger 20 and then a passageway 34 in the wellhead 22. Conduit 30 and passageways 32 and 34 provide a continuous channel that houses at least one optical fiber 36. Optical fiber 36 exits subsea tree 22 at an outlet 38. The position of the outlet 38 is dependent on the subsea tree vendor and type of subsea tree, be it a horizontal or vertical subsea tree.
- optical fiber 36 may actually be formed from a plurality of components.
- optical fiber 36 herein refers to all of such components that are in optical communication.
- a subsea tree connector subassembly 40 is associated with and may be connected to the subsea tree 22.
- the optical fiber 36 (or a component thereof) extends from the outlet 38 to the subassembly 40 and may be housed between such two points by a tube 42.
- Subassembly 40 includes connectors 44 that are mateable with corresponding connectors to be deployed on a remotely operated vehicle (RON), as will be disclosed.
- Optical fiber 36 can carry optical signals indicative of data or commands. Such optical signals can thus extend to and from the bottom of the optical fiber 36 to the subassembly 40, at which point they may be passed on to the RON via the connectors 44, as will be disclosed.
- passageways and outlets similar to passageway 34 and outlet 38 may be used to house the optical fiber 36, or the optical fiber 36 may be housed in an additional passageway 34 and outlet 38.
- FIG. 2 shows the deployment of an ROV 60 from a remote location, such as a vessel 62 (a ship).
- ROV 60 is connected to the vessel 62 by way of cable 64.
- Cable 64 includes at least one optical fiber 66 that extends from the ROV 60 to an opto-electronic unit 68 that may be located on the vessel 62 (or another remote location). Cable 64 may also provide power to ROV 60.
- ROV 60 includes thrusters 70 that enable its maneuverability and control from a remote location, such as vessel 62.
- ROV 60 includes an ROV connector subassembly 72 that includes connectors 74 that are selectively mateable with the connectors 44 on the tree connector subassembly 40.
- the tree connectors 44 may be the male connectors and the ROV connectors 74 may be the female connectors, or vice versa.
- ROV 60 also provides optical communication, by way of additional or the same optical fiber, from optical fiber 66 through ROV 60 and to ROV connectors 74.
- optical communication exists from the bottom of the optical fiber 36 housed in the conduit 30 to the unit 68.
- optical communication from the subsea well 12 to the unit 68 via the ROV 60 is to enable the selective transmission of information to and from the subsea well 12 without requiring a permanent optical communication cable or subsea opto-electronics unit.
- Optical communication to and from the subsea well 12 can provide a large number of benefits to an operator.
- the optical fibers 36, 66 and unit 68 may comprise a distributed temperature sensor (DTS)-based temperature measurement system that can provide temperature data that is spatially distributed over many thousands of individual measurement points inside the well.
- Optical fiber 36 can be deployed downhole so that the optical fiber 36 extends into the region where temperature measurements are to be made (within the subsea well 12).
- An optical time domain reflectometry (OTDR) technique may be used to detect the spatial distribution of temperature along the length of the optical fiber 36.
- OTDR techniques used to measure a temperature profile along a location, such as a well, are known.
- optical energy is introduced by the unit 68 into optical fiber 66, through ROV 60, through mated connectors 74 and 44, and into optical fiber 36 in the subsea well 12.
- the optical energy that is introduced into the optical fiber 36 produces backscattered light.
- the phrase "backscattered light” refers to the optical energy that returns at various points along the optical fiber 36 back to the unit 68.
- a pulse of optical energy typically is introduced into optical fiber 66, through ROV 60, through mated connectors 74 and 44, and into optical fiber 36, and the resultant backscattered optical energy that returns from the optical fiber 36 to the unit 68 is observed as a function of time.
- the time at which the backscattered light propagates from the various points along the optical fiber 36 to the unit 68 is proportional to the distance along the optical fiber 36 from which the backscattered light is received.
- the intensity of the backscattered light as observed from the unit 68 exhibits an exponential decay with time. Therefore, knowing the speed of light in the optical fiber 36 yields the distances that the light has traveled along the optical fiber 36. Variations in the temperature show up as variations from a perfect exponential decay of intensity with distance. Thus, these variations are used to derive the distribution of temperature along the optical fiber 36.
- the backscattered light includes the Rayleigh spectrum, the Brillouin spectrum and the Raman spectrum.
- the Raman spectrum is the most temperature sensitive with the intensity of the spectrum varying with temperature, although all three spectrums of the backscattered light contain temperature information.
- the Raman spectrum typically is observed to obtain a temperature distribution from the backscattered light.
- a temperature profile along the subsea well 12 may be beneficial for a variety of reasons, as known in the art. For instance, a temperature profile along the formation 26 may be used to determine where and whether hydrocarbons are flowing from the formation 26 into the well 12.
- optical fiber 66 and unit 68 may be configured so that backscattered light from the optical fiber 66 is also analyzed at the unit 68, as previously disclosed.
- OFDR optical frequency domain reflectometry
- Optical fiber 36 may also be in functional communication with other types of sensors (not shown), such pressure sensors, acoustic sensors, resistivity arrays, flow sensors, chemical property sensors, optical fluid analyzers, water detection sensors, gas detection sensors, oil detection sensors, differential pressure sensors, relative bearing sensors, strain sensors, distributed strain sensors, distributed pressure sensors, accelerometers, or induction sensors.
- sensors may be electrical or optical.
- data from such sensors may be transferred optically to the unit 68.
- Status data of any downhole tool or sensors may also be sent via the optical pathway.
- Optical communication between unit 68 and subsea well 12 may also be used to send commands to and from the unit 68.
- an optical command may be sent to a downhole tool, such as a packer 80, which is received and interpreted by a module in the packer 80 to take a certain action, such as setting the packer 80.
- Other downhole tools that may be optically activated may include pumps, valves, separators, anchors, and chokes, to name a few.
- an ROV 60 is launched from the vessel 62 and is maneuvered to mate with tree subassembly 40 so that optical communication is established through mated tree connectors 44 and ROV connectors 74.
- optical communication takes place through the optical fibers 36 and 66, as previously disclosed.
- a temperature profile along optical fiber 36 (and/or optical fiber 66) or data from another sensor/tool may be obtained at the unit 68 and vessel 62.
- commands may be sent from the unit 68 to downhole or from downhole to the unit 68.
- the ROV 60 is disengaged from the tree subassembly 40 and is maneuvered back to the vessel 62 or the subsea tree of another nearby subsea well to repeat the procedure at such well.
- ROV 60 essentially collects the relevant information from the subsea well 12 on a real-time (or near real-time) basis whenever the ROV 60 and ROV connectors 74 is/are engaged.
- the selective engagement and transmission of information using ROV 60 benefits an operator since the operator does not have to include additional, costly, and power-consuming subsea infrastructure (such as a subsea opto-electronic unit or an additional subsea power and communication module) to enable the functionality of the system.
- any subsea tree can be retrofitted to be used with the ROV 60 and the invention disclosed herein.
- a memory module (not shown) is provided adjacent or in the subsea tree 12 in order to capture data at various points in the life of the well. In this embodiment, the ROV 60 downloads such data from the module when engaged.
- optical fiber 36 and 66 may be deployed in the subsea well 12 and a plurality of optical fibers 66 may be contained in the cable 64.
- the invention can be used with any subsea well (such as injector and/or water wells) and not just those wells that carry hydrocarbons or produce fluids. It is intended that the appended claims cover all such modifications and variations as fall within the true spirit and scope of the invention.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Geology (AREA)
- Electromagnetism (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR0318072-7A BR0318072A (pt) | 2003-02-04 | 2003-12-18 | Método e sistema para transmissão de informações para ou de um poço submarino |
MXPA05008055A MXPA05008055A (es) | 2003-02-04 | 2003-12-18 | Metodo y sistema para el uso de un sistema de temperatura distribuida en un pozo submarino. |
AU2003295127A AU2003295127A1 (en) | 2003-02-04 | 2003-12-18 | Method and system for the use of a distributed temperature system in a subsea well |
NO20053950A NO339526B1 (no) | 2003-02-04 | 2005-08-24 | Fremgangsmåte og system for bruken av et distribuert temperatursystem i en undervannsbrønn. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0302499.9 | 2003-02-04 | ||
GB0302499A GB2398444B (en) | 2003-02-04 | 2003-02-04 | Method and system for the use of a distributed temperature system in a subsea well |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004070167A1 true WO2004070167A1 (fr) | 2004-08-19 |
Family
ID=9952377
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2003/005515 WO2004070167A1 (fr) | 2003-02-04 | 2003-12-18 | Procede et systeme pour se servir d'un systeme a temperatures distribuees dans un puits sous-marin |
Country Status (6)
Country | Link |
---|---|
AU (1) | AU2003295127A1 (fr) |
BR (1) | BR0318072A (fr) |
GB (1) | GB2398444B (fr) |
MX (1) | MXPA05008055A (fr) |
NO (1) | NO339526B1 (fr) |
WO (1) | WO2004070167A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104487828A (zh) * | 2012-07-27 | 2015-04-01 | 诺蒂勒斯矿物太平洋有限公司 | 使用远程操作运载工具进行海底测试的方法 |
CN109283359A (zh) * | 2018-11-09 | 2019-01-29 | 美钻深海能源科技研发(上海)有限公司 | 一种水下装备环境流速数据探测装置 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2443559B (en) * | 2006-11-06 | 2011-10-05 | Weatherford Lamb | Distributed temperature sensing in a remotely operated vehicle umbilical fiber optic cable |
US7967066B2 (en) | 2008-05-09 | 2011-06-28 | Fmc Technologies, Inc. | Method and apparatus for Christmas tree condition monitoring |
US7845404B2 (en) | 2008-09-04 | 2010-12-07 | Fmc Technologies, Inc. | Optical sensing system for wellhead equipment |
GB2477714A (en) * | 2010-01-15 | 2011-08-17 | Subsea Controls Ltd | Retrievable instrumentation module for connection to a subsea installation |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1988003596A1 (fr) * | 1986-11-11 | 1988-05-19 | Myrmidon Subsea Controls Ltd | Systemes et dispositifs sous-marins |
US6223675B1 (en) * | 1999-09-20 | 2001-05-01 | Coflexip, S.A. | Underwater power and data relay |
US6257162B1 (en) * | 1999-09-20 | 2001-07-10 | Coflexip, S.A. | Underwater latch and power supply |
US6281489B1 (en) * | 1997-05-02 | 2001-08-28 | Baker Hughes Incorporated | Monitoring of downhole parameters and tools utilizing fiber optics |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1007227A5 (nl) * | 1993-06-18 | 1995-04-25 | Allseas Eng Bv | Werkwijze en inrichting voor communicatie onder water. |
WO2000008297A1 (fr) * | 1998-08-06 | 2000-02-17 | Dtc International, Inc. | Module de commande sous-marin |
GB0216259D0 (en) * | 2002-07-12 | 2002-08-21 | Sensor Highway Ltd | Subsea and landing string distributed sensor system |
-
2003
- 2003-02-04 GB GB0302499A patent/GB2398444B/en not_active Expired - Lifetime
- 2003-12-18 AU AU2003295127A patent/AU2003295127A1/en not_active Abandoned
- 2003-12-18 WO PCT/GB2003/005515 patent/WO2004070167A1/fr not_active Application Discontinuation
- 2003-12-18 MX MXPA05008055A patent/MXPA05008055A/es active IP Right Grant
- 2003-12-18 BR BR0318072-7A patent/BR0318072A/pt not_active Application Discontinuation
-
2005
- 2005-08-24 NO NO20053950A patent/NO339526B1/no not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1988003596A1 (fr) * | 1986-11-11 | 1988-05-19 | Myrmidon Subsea Controls Ltd | Systemes et dispositifs sous-marins |
US6281489B1 (en) * | 1997-05-02 | 2001-08-28 | Baker Hughes Incorporated | Monitoring of downhole parameters and tools utilizing fiber optics |
US6223675B1 (en) * | 1999-09-20 | 2001-05-01 | Coflexip, S.A. | Underwater power and data relay |
US6257162B1 (en) * | 1999-09-20 | 2001-07-10 | Coflexip, S.A. | Underwater latch and power supply |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104487828A (zh) * | 2012-07-27 | 2015-04-01 | 诺蒂勒斯矿物太平洋有限公司 | 使用远程操作运载工具进行海底测试的方法 |
CN109283359A (zh) * | 2018-11-09 | 2019-01-29 | 美钻深海能源科技研发(上海)有限公司 | 一种水下装备环境流速数据探测装置 |
Also Published As
Publication number | Publication date |
---|---|
GB0302499D0 (en) | 2003-03-05 |
NO339526B1 (no) | 2016-12-27 |
GB2398444A (en) | 2004-08-18 |
GB2398444B (en) | 2005-08-17 |
BR0318072A (pt) | 2005-12-20 |
MXPA05008055A (es) | 2006-03-17 |
NO20053950D0 (no) | 2005-08-24 |
NO20053950L (no) | 2005-11-02 |
AU2003295127A1 (en) | 2004-08-30 |
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