GB1281470A - Improvements in seismic impulse transmitting apparatus - Google Patents

Improvements in seismic impulse transmitting apparatus

Info

Publication number
GB1281470A
GB1281470A GB6124970A GB6124970A GB1281470A GB 1281470 A GB1281470 A GB 1281470A GB 6124970 A GB6124970 A GB 6124970A GB 6124970 A GB6124970 A GB 6124970A GB 1281470 A GB1281470 A GB 1281470A
Authority
GB
United Kingdom
Prior art keywords
tank
diaphragm
generator
seismic energy
polyurethane
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
GB6124970A
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.)
Bolt Associates Inc
Original Assignee
Bolt Associates 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
Application filed by Bolt Associates Inc filed Critical Bolt Associates Inc
Publication of GB1281470A publication Critical patent/GB1281470A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/38Seismology; Seismic or acoustic prospecting or detecting specially adapted for water-covered areas
    • G01V1/387Reducing secondary bubble pulse, i.e. reducing the detected signals resulting from the generation and release of gas bubbles after the primary explosion

Abstract

1281470 Seismic energy generators BOLT ASSOCIATES Inc 23 Dec 1970 [29 Dec 1969] 61249/70 Heading H4D A seismic energy generator for use on hard, soft or marshy ground or on water-covered areas comprises a liquid-containing tank 12 including one or more devices 18 for abruptly releasing pressurized gas (e.g. air) into the liquid, the tank having as its base a displaceable diaphragm structure comprising a diaphragm and cylindrical member 38. This structure allows the tank to move upwards as the seismic energy is transmitted downwards. The diaphragm is of metal. A seal which allows relative movement between tank 12 and member 38 is provided by annular, sliding, plastics (e.g. polyurethane) seal 42 or (Fig. 4, not shown) by a second, polyurethane diaphragm clamped at 47 to the rim of the wall of tank 12 so that the second diaphragm overlies the one shown. A stop-ring 56 and shock-absorbing polyurethane ring 58 limit the relative movement of tank 12 and member 38 so that the upward movement of tank 12 lifts the metal diaphragm after initial downward motion of the diaphragm. A support for the generator " catches " the generator and retards its subsequent fall. Rubber boot 62 excludes dirt from the generator. Released gas is vented from the generator via a gas-liquid separator.
GB6124970A 1969-12-29 1970-12-23 Improvements in seismic impulse transmitting apparatus Expired GB1281470A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US88875969A 1969-12-29 1969-12-29

Publications (1)

Publication Number Publication Date
GB1281470A true GB1281470A (en) 1972-07-12

Family

ID=25393828

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6124970A Expired GB1281470A (en) 1969-12-29 1970-12-23 Improvements in seismic impulse transmitting apparatus

Country Status (7)

Country Link
JP (1) JPS5017161B1 (en)
BE (1) BE760981A (en)
CA (1) CA934052A (en)
DE (1) DE2063380C3 (en)
FR (1) FR2074299A5 (en)
GB (1) GB1281470A (en)
NL (1) NL7018679A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2230859A (en) * 1989-04-21 1990-10-31 British Gas Plc Seismic pulse generation
US5145371A (en) * 1989-09-15 1992-09-08 Nobelpharma Ab Distance member
US5270985A (en) * 1989-04-21 1993-12-14 British Gas Plc Seismic pulse generation

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2230859A (en) * 1989-04-21 1990-10-31 British Gas Plc Seismic pulse generation
GB2230859B (en) * 1989-04-21 1993-02-10 British Gas Plc Seismic pulse generation
US5270985A (en) * 1989-04-21 1993-12-14 British Gas Plc Seismic pulse generation
US5145371A (en) * 1989-09-15 1992-09-08 Nobelpharma Ab Distance member

Also Published As

Publication number Publication date
FR2074299A5 (en) 1971-10-01
DE2063380A1 (en) 1971-07-15
BE760981A (en) 1971-05-27
NL7018679A (en) 1971-07-01
DE2063380B2 (en) 1980-01-17
JPS5017161B1 (en) 1975-06-19
CA934052A (en) 1973-09-18
DE2063380C3 (en) 1980-09-18

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Legal Events

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