GB9820078D0 - Improvements in or relating to downhole tools - Google Patents
Improvements in or relating to downhole toolsInfo
- Publication number
- GB9820078D0 GB9820078D0 GBGB9820078.5A GB9820078A GB9820078D0 GB 9820078 D0 GB9820078 D0 GB 9820078D0 GB 9820078 A GB9820078 A GB 9820078A GB 9820078 D0 GB9820078 D0 GB 9820078D0
- 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.)
- Withdrawn
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)
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 (2)
Publication Number | Publication Date |
---|---|
GB9820078D0 true GB9820078D0 (en) | 1998-11-11 |
GB2334732A GB2334732A (en) | 1999-09-01 |
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 Before (1)
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 |
Country Status (1)
Country | Link |
---|---|
GB (2) | GB9720024D0 (en) |
Family Cites Families (5)
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 |
-
1997
- 1997-09-19 GB GBGB9720024.0A patent/GB9720024D0/en not_active Ceased
-
1998
- 1998-09-16 GB GB9820078A patent/GB2334732A/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
GB2334732A (en) | 1999-09-01 |
GB9720024D0 (en) | 1997-11-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |