GB1546232A - Method and apparatus of investigating an earth formation - Google Patents

Method and apparatus of investigating an earth formation

Info

Publication number
GB1546232A
GB1546232A GB1252776A GB1252776A GB1546232A GB 1546232 A GB1546232 A GB 1546232A GB 1252776 A GB1252776 A GB 1252776A GB 1252776 A GB1252776 A GB 1252776A GB 1546232 A GB1546232 A GB 1546232A
Authority
GB
United Kingdom
Prior art keywords
investigating
earth formation
earth
formation
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
Application number
GB1252776A
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.)
Schlumberger NV
Original Assignee
Schlumberger NV
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 Schlumberger NV filed Critical Schlumberger NV
Publication of GB1546232A publication Critical patent/GB1546232A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01V5/101—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 the secondary Y-rays produced in the surrounding layers of the bore hole
    • G01V5/102—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 the secondary Y-rays produced in the surrounding layers of the bore hole the neutron source being of the pulsed type
GB1252776A 1975-03-31 1976-03-29 Method and apparatus of investigating an earth formation Expired GB1546232A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US56335975A 1975-03-31 1975-03-31

Publications (1)

Publication Number Publication Date
GB1546232A true GB1546232A (en) 1979-05-23

Family

ID=24250191

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1252776A Expired GB1546232A (en) 1975-03-31 1976-03-29 Method and apparatus of investigating an earth formation

Country Status (3)

Country Link
CA (1) CA1052477A (en)
GB (1) GB1546232A (en)
SU (1) SU1207405A3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2173591A (en) * 1985-04-01 1986-10-15 S I E Inc Pulsed neutron well-logging method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2173591A (en) * 1985-04-01 1986-10-15 S I E Inc Pulsed neutron well-logging method

Also Published As

Publication number Publication date
SU1207405A3 (en) 1986-01-23
CA1052477A (en) 1979-04-10

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19960328