GB2271178B - Nuclear logging apparatus - Google Patents

Nuclear logging apparatus

Info

Publication number
GB2271178B
GB2271178B GB9324858A GB9324858A GB2271178B GB 2271178 B GB2271178 B GB 2271178B GB 9324858 A GB9324858 A GB 9324858A GB 9324858 A GB9324858 A GB 9324858A GB 2271178 B GB2271178 B GB 2271178B
Authority
GB
United Kingdom
Prior art keywords
logging apparatus
nuclear logging
nuclear
logging
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.)
Expired - Fee Related
Application number
GB9324858A
Other versions
GB9324858D0 (en
GB2271178A (en
Inventor
Roy Nordstrom
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.)
Teleco Oilfield Services Inc
Original Assignee
Teleco Oilfield Services Inc
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
Priority claimed from US07/511,538 external-priority patent/US5083124A/en
Application filed by Teleco Oilfield Services Inc filed Critical Teleco Oilfield Services Inc
Publication of GB9324858D0 publication Critical patent/GB9324858D0/en
Publication of GB2271178A publication Critical patent/GB2271178A/en
Application granted granted Critical
Publication of GB2271178B publication Critical patent/GB2271178B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/153—Arrangements in which a pulse is delivered at the instant when a predetermined characteristic of an input signal is present or at a fixed time interval after this instant
    • H03K5/1532—Peak detectors
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
    • E21B47/017—Protecting measuring instruments
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/04—Measuring peak values or amplitude or envelope of ac or of pulses
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V5/00—Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity
    • G01V5/04—Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity specially adapted for well-logging
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V5/00—Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity
    • G01V5/04—Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity specially adapted for well-logging
    • G01V5/08—Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity specially adapted for well-logging using primary nuclear radiation sources or X-rays
    • G01V5/10—Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity specially adapted for well-logging using primary nuclear radiation sources or X-rays using neutron sources
    • G01V5/104—Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity specially adapted for well-logging using primary nuclear radiation sources or X-rays using neutron sources and detecting secondary Y-rays as well as reflected or back-scattered neutrons
GB9324858A 1990-04-17 1993-12-03 Nuclear logging apparatus Expired - Fee Related GB2271178B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/511,538 US5083124A (en) 1990-04-17 1990-04-17 Nuclear logging tool electronics including programmable gain amplifier and peak detection circuits
GB9108258A GB2243443B (en) 1990-04-17 1991-04-17 Nuclear logging apparatus

Publications (3)

Publication Number Publication Date
GB9324858D0 GB9324858D0 (en) 1994-01-19
GB2271178A GB2271178A (en) 1994-04-06
GB2271178B true GB2271178B (en) 1994-08-10

Family

ID=26298746

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9324858A Expired - Fee Related GB2271178B (en) 1990-04-17 1993-12-03 Nuclear logging apparatus
GB9324859A Expired - Fee Related GB2271233B (en) 1990-04-17 1993-12-03 Nuclear logging apparatus

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB9324859A Expired - Fee Related GB2271233B (en) 1990-04-17 1993-12-03 Nuclear logging apparatus

Country Status (1)

Country Link
GB (2) GB2271178B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200032648A1 (en) * 2017-03-23 2020-01-30 General Electric Company Sensing systems and methods for detecting changes in downhole hydrocarbon and gas species

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4918314A (en) * 1989-01-06 1990-04-17 Halliburton Logging Services, Inc. Gain stabilization circuit for photomultiplier tubes

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4445093A (en) * 1979-09-26 1984-04-24 Toledo Transducers, Inc. Press cycle monitor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4918314A (en) * 1989-01-06 1990-04-17 Halliburton Logging Services, Inc. Gain stabilization circuit for photomultiplier tubes

Also Published As

Publication number Publication date
GB2271233A (en) 1994-04-06
GB9324859D0 (en) 1994-01-19
GB9324858D0 (en) 1994-01-19
GB2271233B (en) 1994-08-10
GB2271178A (en) 1994-04-06

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Legal Events

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

Effective date: 19970417