[go: up one dir, main page]

CA2399130A1 - A method and apparatus for the optimal predistortion of an electromagnetic signal in a downhole communication system - Google Patents

A method and apparatus for the optimal predistortion of an electromagnetic signal in a downhole communication system Download PDF

Info

Publication number
CA2399130A1
CA2399130A1 CA002399130A CA2399130A CA2399130A1 CA 2399130 A1 CA2399130 A1 CA 2399130A1 CA 002399130 A CA002399130 A CA 002399130A CA 2399130 A CA2399130 A CA 2399130A CA 2399130 A1 CA2399130 A1 CA 2399130A1
Authority
CA
Canada
Prior art keywords
location
predistortion
communicating
communication system
piping structure
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.)
Granted
Application number
CA002399130A
Other languages
French (fr)
Other versions
CA2399130C (en
Inventor
Mark Christopher Haase
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shell Canada Ltd
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2399130A1 publication Critical patent/CA2399130A1/en
Application granted granted Critical
Publication of CA2399130C publication Critical patent/CA2399130C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
    • E21B43/121—Lifting well fluids
    • E21B43/122—Gas lift
    • E21B43/123—Gas lift valves
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/003—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings with electrically conducting or insulating means
    • 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
    • E21B34/066—Valve arrangements for boreholes or wells in wells electrically actuated
    • 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
    • E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
    • 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
    • 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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/14—Obtaining from a multiple-zone well
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Geophysics (AREA)
  • Mechanical Engineering (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

A method and apparatus for communicating a desired target signal along a piping structure is provided. Because of the lossy communication path presented by the piping structure, an input signal, which is transmitted from a first location on the piping structure, is consciously predistorted prior to transmission. The amount and nature of the predistortion applied to the input signal is determined by mathematically modeling the communication path between the first location and a second location. Predistortion of the input signal results in reception of an output signal at the second location that closely approximates the desired target signal. Application of this predistortion method of communicating is described in the context of communicating in the borehole of a petroleum well.
CA002399130A 2000-02-09 2001-02-09 A method and apparatus for the optimal predistortion of an electromagnetic signal in a downhole communication system Expired - Fee Related CA2399130C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US18132200P 2000-02-09 2000-02-09
US60/181,322 2000-02-09
PCT/EP2001/001512 WO2001059258A1 (en) 2000-02-09 2001-02-09 A method and apparatus for the optimal predistortion of an electromagnetic signal in a downhole communication system

Publications (2)

Publication Number Publication Date
CA2399130A1 true CA2399130A1 (en) 2001-08-16
CA2399130C CA2399130C (en) 2009-06-02

Family

ID=22663794

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002399130A Expired - Fee Related CA2399130C (en) 2000-02-09 2001-02-09 A method and apparatus for the optimal predistortion of an electromagnetic signal in a downhole communication system

Country Status (4)

Country Link
AU (1) AU2001237374A1 (en)
CA (1) CA2399130C (en)
GB (1) GB2376965B (en)
WO (1) WO2001059258A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7110437B2 (en) 2001-03-14 2006-09-19 Mercury Computer Systems, Inc. Wireless communications systems and methods for direct memory access and buffering of digital signals for multiple user detection
US7376175B2 (en) 2001-03-14 2008-05-20 Mercury Computer Systems, Inc. Wireless communications systems and methods for cache enabled multiple processor based multiple user detection
US9303507B2 (en) 2013-01-31 2016-04-05 Saudi Arabian Oil Company Down hole wireless data and power transmission system
CN117052380B (en) * 2023-10-10 2024-01-02 四川宏大安全技术服务有限公司 Wireless pressure measurement device and method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4648471A (en) * 1983-11-02 1987-03-10 Schlumberger Technology Corporation Control system for borehole tools
US4839644A (en) * 1987-06-10 1989-06-13 Schlumberger Technology Corp. System and method for communicating signals in a cased borehole having tubing
US5251328A (en) * 1990-12-20 1993-10-05 At&T Bell Laboratories Predistortion technique for communications systems
US5160925C1 (en) * 1991-04-17 2001-03-06 Halliburton Co Short hop communication link for downhole mwd system
US5959499A (en) * 1997-09-30 1999-09-28 Motorola, Inc. Predistortion system and method using analog feedback loop for look-up table training

Also Published As

Publication number Publication date
CA2399130C (en) 2009-06-02
GB0218181D0 (en) 2002-09-11
GB2376965B (en) 2004-02-18
AU2001237374A1 (en) 2001-08-20
WO2001059258A1 (en) 2001-08-16
GB2376965A (en) 2002-12-31

Similar Documents

Publication Publication Date Title
TWI228355B (en) Fast adaptive power control for a variable multirate communications system
WO2002025893A3 (en) A business to business engine and system for facilitating information interexchange using realtime data
EP0919696A3 (en) Electromagnetic and acoustic repeater and method for use of same
EP1233508A3 (en) Intermediate frequency planning in radio transmitters and receivers
WO2004051054A3 (en) Coiled tubing acoustic telemetry system and method
EP2315379A3 (en) System and method for data transmission and reception
WO2003013045A3 (en) System and method for processing product orders placed through a network
WO2004054279A3 (en) System and method for handshaking between wireless devices and servers
WO2006102745A8 (en) Method and system for combining ofdm and transformed ofdm
TW200637190A (en) Contactless connector systems
WO2007070313A3 (en) Multiple input, multiple output wireless communication system, associated methods and data structures
WO2002042870A3 (en) Electronic systems and methods for dispute management
WO2005015807A3 (en) Realtime electronic communications system and method
EP0858201A3 (en) Method and apparatus for allowing secure transactions through a firewall
EP0969633A3 (en) Differential line driver
EP1223677A3 (en) Data compression and related control method
CA2399130A1 (en) A method and apparatus for the optimal predistortion of an electromagnetic signal in a downhole communication system
EP1383249A3 (en) Information transmission system and method of data transmission for adding new devices to an existing airframe bus
AU2001295636A1 (en) Method of implementing a repeater, and a transceiver unit
WO2002065662A3 (en) Line interface a matching impedance coupled ro a feedback path
WO2001042946A3 (en) Method and device for the transfer of electronic data volumes
EP1249971A3 (en) Network Interface Using Programmable Delay and Frequency Doubler
WO2003025744A3 (en) Method for transmission of a process value and control system
ATE400123T1 (en) PROCESSING OF AN OFDM SIGNAL
WO2000052596A3 (en) Automated form generation into an advanced page layout format with embedded field definitions

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20170209