公开(公告)号：US3601790A

公开(公告)日：1971-08-24

申请号：US3601790D

申请日：1969-09-03

Applicant: EXXON PRODUCTION RESEARCH CO

Inventor： SASSEEN JOHN H

IPC: G01V1/00 ,  G01V1/16

CPC classification number: G01V1/003

Abstract: Common depth point seismic prospecting is accomplished by sequentially producing seismic waves at transmitting locations spaced apart the distance A, and detecting resulting seismic waves at a first plurality of detecting locations along the traverse spaced apart a distance A from the transmitting location corresponding thereto and a second plurality of transmitting locations spaced apart a distance 2A, the second plurality of detecting locations beginning at the end of the first plurality.

公开(公告)号：US3275981A

公开(公告)日：1966-09-27

申请号：US30374663

申请日：1963-08-22

Applicant: EXXON PRODUCTION RESEARCH CO

Inventor： SASSEEN JOHN H ,  MACPHAIL MALCOLM R ,  WISCHMEYER CARL R

IPC: E21B47/026 ,  G11B5/004 ,  G11B5/55

CPC classification number: G11B5/5591 ,  E21B47/026 ,  G11B5/004

公开(公告)号：US3664610A

公开(公告)日：1972-05-23

申请号：US3664610D

申请日：1970-07-06

Applicant: EXXON PRODUCTION RESEARCH CO

Inventor： SASSEEN JOHN H

IPC: G11B15/58 ,  G11B15/60 ,  B65H75/34 ,  G03B1/04

CPC classification number: G11B15/58 ,  G11B15/60

Abstract: MAGNETIC TAPE TRANSPORT APPARATUS FOR USE WITH DIGITAL COMPUTERS AND RECORDERS USE TAPE TENSION CONTROL DEVICES IN CONJUCTION WITH THE SPEED CONTROL MECHANISM CONTROLLING SPEED AND DDIRECTION OF THE TAPE TRANSFER BETWEEN A STORAGE REEL AND A "TAKE-UP" REEL. THE WEAR RATE OF THE MAGNETIC HEAD USED FOR RECORDING AND/OR REPRODUCING DATA SIGNALS IS MINIMIZED BY DIRECTING A STREAM OF COMPRESSED AIR BETWEEN THE HEAD AND THE TAPE.

公开(公告)号：US3275757A

公开(公告)日：1966-09-27

申请号：US26836963

申请日：1963-03-27

Applicant: EXXON PRODUCTION RESEARCH CO

Inventor： SASSEEN JOHN H

IPC: G11B5/02

CPC classification number: G11B5/02