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GB2376965A - 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

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Publication number
GB2376965A
GB2376965A GB0218181A GB0218181A GB2376965A GB 2376965 A GB2376965 A GB 2376965A GB 0218181 A GB0218181 A GB 0218181A GB 0218181 A GB0218181 A GB 0218181A GB 2376965 A GB2376965 A GB 2376965A
Authority
GB
United Kingdom
Prior art keywords
location
predistortion
communicating
piping structure
input signal
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
GB0218181A
Other versions
GB0218181D0 (en
GB2376965B (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 Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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 Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Publication of GB0218181D0 publication Critical patent/GB0218181D0/en
Publication of GB2376965A publication Critical patent/GB2376965A/en
Application granted granted Critical
Publication of GB2376965B publication Critical patent/GB2376965B/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)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Remote Sensing (AREA)
  • Geophysics (AREA)
  • Electromagnetism (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 transmined 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.

Description

(57) 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 transmined 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.
GB0218181A 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 GB2376965B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US18132200P 2000-02-09 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 (3)

Publication Number Publication Date
GB0218181D0 GB0218181D0 (en) 2002-09-11
GB2376965A true GB2376965A (en) 2002-12-31
GB2376965B GB2376965B (en) 2004-02-18

Family

ID=22663794

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0218181A Expired - Fee Related GB2376965B (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
US7327780B2 (en) 2001-03-14 2008-02-05 Mercury Computer Systems, Inc. Wireless communications systems and methods for multiple operating system 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

Citations (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
EP0295178A2 (en) * 1987-06-10 1988-12-14 Schlumberger Limited System and method for communicating signals in a cased borehole having tubing
EP0492856A2 (en) * 1990-12-20 1992-07-01 AT&T Corp. Predistortion technique for communications systems
US5160925A (en) * 1991-04-17 1992-11-03 Smith International, Inc. 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

Patent Citations (6)

* 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
EP0295178A2 (en) * 1987-06-10 1988-12-14 Schlumberger Limited System and method for communicating signals in a cased borehole having tubing
EP0492856A2 (en) * 1990-12-20 1992-07-01 AT&T Corp. Predistortion technique for communications systems
US5160925A (en) * 1991-04-17 1992-11-03 Smith International, Inc. Short hop communication link for downhole mwd system
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
AU2001237374A1 (en) 2001-08-20
GB0218181D0 (en) 2002-09-11
WO2001059258A1 (en) 2001-08-16
GB2376965B (en) 2004-02-18
CA2399130A1 (en) 2001-08-16

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20160209