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1.发明授权Signal correction system for well logging instrument having short and long-spaced radioactivity detectors and a bore hole caliper 失效具有短距离和长距离放射性检测器和井孔卡尺的井下记录仪的信号校正系统
公开(公告)号：US3538329A
公开(公告)日：1970-11-03
申请号：US3538329D
申请日：1967-11-21
Applicant: DRESSER IND
Inventor： NIVEN FRANCIS J JR
CPC classification number: G01V5/125
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公开(公告)号：US3534401A
公开(公告)日：1970-10-13
申请号：US3534401D
申请日：1966-04-20
Applicant: DRESSER IND
Inventor： KARVELLAS PAUL H , HOPKINSON ERIC C , NIVEN FRANCIS J JR
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