GB9720024D0 - Improvements in or relating to downhole tools - Google Patents

Improvements in or relating to downhole tools

Info

Publication number
GB9720024D0
GB9720024D0 GBGB9720024.0A GB9720024A GB9720024D0 GB 9720024 D0 GB9720024 D0 GB 9720024D0 GB 9720024 A GB9720024 A GB 9720024A GB 9720024 D0 GB9720024 D0 GB 9720024D0
Authority
GB
United Kingdom
Prior art keywords
relating
downhole tools
downhole
tools
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.)
Ceased
Application number
GBGB9720024.0A
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.)
SYMONS DOWNHOLE TOOLING LIMITE
Original Assignee
SYMONS DOWNHOLE TOOLING LIMITE
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 SYMONS DOWNHOLE TOOLING LIMITE filed Critical SYMONS DOWNHOLE TOOLING LIMITE
Priority to GBGB9720024.0A priority Critical patent/GB9720024D0/en
Publication of GB9720024D0 publication Critical patent/GB9720024D0/en
Priority to GB9820078A priority patent/GB2334732A/en
Ceased 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
    • 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
    • E21B47/14—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 using acoustic waves
    • E21B47/18—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 using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
    • 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
    • E21B47/14—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 using acoustic waves
    • E21B47/18—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 using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
    • E21B47/20—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 using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry by modulation of mud waves, e.g. by continuous modulation
    • 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
    • E21B47/14—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 using acoustic waves
    • E21B47/18—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 using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
    • E21B47/24—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 using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry by positive mud pulses using a flow restricting valve within the drill pipe

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Geophysics (AREA)
  • Acoustics & Sound (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geophysics And Detection Of Objects (AREA)
GBGB9720024.0A 1997-09-19 1997-09-19 Improvements in or relating to downhole tools Ceased GB9720024D0 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GBGB9720024.0A GB9720024D0 (en) 1997-09-19 1997-09-19 Improvements in or relating to downhole tools
GB9820078A GB2334732A (en) 1997-09-19 1998-09-16 Downhole telemetry system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9720024.0A GB9720024D0 (en) 1997-09-19 1997-09-19 Improvements in or relating to downhole tools

Publications (1)

Publication Number Publication Date
GB9720024D0 true GB9720024D0 (en) 1997-11-19

Family

ID=10819389

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB9720024.0A Ceased GB9720024D0 (en) 1997-09-19 1997-09-19 Improvements in or relating to downhole tools
GB9820078A Withdrawn GB2334732A (en) 1997-09-19 1998-09-16 Downhole telemetry system

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB9820078A Withdrawn GB2334732A (en) 1997-09-19 1998-09-16 Downhole telemetry system

Country Status (1)

Country Link
GB (2) GB9720024D0 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4550392A (en) * 1982-03-08 1985-10-29 Exploration Logging, Inc. Apparatus for well logging telemetry
US4953595A (en) * 1987-07-29 1990-09-04 Eastman Christensen Company Mud pulse valve and method of valving in a mud flow for sharper rise and fall times, faster data pulse rates, and longer lifetime of the mud pulse valve
US4847815A (en) * 1987-09-22 1989-07-11 Anadrill, Inc. Sinusoidal pressure pulse generator for measurement while drilling tool
US5357483A (en) * 1992-10-14 1994-10-18 Halliburton Logging Services, Inc. Downhole tool
GB9408823D0 (en) * 1994-05-04 1994-06-22 Pilot Drilling Control Ltd Telemetry

Also Published As

Publication number Publication date
GB9820078D0 (en) 1998-11-11
GB2334732A (en) 1999-09-01

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Legal Events

Date Code Title Description
AT Applications terminated before publication under section 16(1)