GB1330810A - Method of and system for reducing secondary pressure pulses in operation of pneumatic sound source in water - Google Patents

Method of and system for reducing secondary pressure pulses in operation of pneumatic sound source in water

Info

Publication number
GB1330810A
GB1330810A GB2498372A GB1330810DA GB1330810A GB 1330810 A GB1330810 A GB 1330810A GB 2498372 A GB2498372 A GB 2498372A GB 1330810D A GB1330810D A GB 1330810DA GB 1330810 A GB1330810 A GB 1330810A
Authority
GB
United Kingdom
Prior art keywords
valve
water
outlet port
bubble
secondary pressure
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
GB2498372A
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.)
ExxonMobil Oil Corp
Original Assignee
Mobil Oil Corp
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 Mobil Oil Corp filed Critical Mobil Oil Corp
Publication of GB1330810A publication Critical patent/GB1330810A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/38—Seismology; Seismic or acoustic prospecting or detecting specially adapted for water-covered areas
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/02—Generating seismic energy
    • G01V1/133—Generating seismic energy using fluidic driving means, e.g. highly pressurised fluids; using implosion
    • G01V1/137—Generating seismic energy using fluidic driving means, e.g. highly pressurised fluids; using implosion which fluid escapes from the generator in a pulsating manner, e.g. for generating bursts, airguns
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/38—Seismology; Seismic or acoustic prospecting or detecting specially adapted for water-covered areas
    • G01V1/387—Reducing secondary bubble pulse, i.e. reducing the detected signals resulting from the generation and release of gas bubbles after the primary explosion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/30—Assessment of water resources

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Acoustics & Sound (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Oceanography (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

1330810 Seismic energy generators MOBIL OIL CORP 26 May 1972 24983/72 Heading H4D A marine seismic source, of the type in which compressed gas is released abruptly into the water through an outlet port when a valve normally closing the port is opened, is provided with a member attached to the valve and adapted to pass through the outlet port when the valve is opened, whereby following the formation of a gas bubble in the water, additional gas flows into the bubble to prevent bubble oscillations and so suppress undesired secondary pressure pulses. In the Fig. 2 embodiment the member, 50, is attached to a valve 27 which is released by deenergizing a solenoid 29 to fire the source. As member 50 moves to the right, the initially large annular space between it and the rounded edge of the outlet port 26 first decreases and then increases again. The valve motion is guided by a cylinder 119 moving in a sleeve 120, and is braked as the valve enters a cylindrical member 123. A spring 28 returns the valve to its closed position. Four such sources may be fired simultaneously in a seismic survey.
GB2498372A 1972-05-26 1972-05-26 Method of and system for reducing secondary pressure pulses in operation of pneumatic sound source in water Expired GB1330810A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2498372 1972-05-26

Publications (1)

Publication Number Publication Date
GB1330810A true GB1330810A (en) 1973-09-19

Family

ID=10220328

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2498372A Expired GB1330810A (en) 1972-05-26 1972-05-26 Method of and system for reducing secondary pressure pulses in operation of pneumatic sound source in water

Country Status (1)

Country Link
GB (1) GB1330810A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0196754A2 (en) * 1985-02-20 1986-10-08 Adrien P. Pascouet Internal secondary bubble pulse suppression

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0196754A2 (en) * 1985-02-20 1986-10-08 Adrien P. Pascouet Internal secondary bubble pulse suppression
EP0196754A3 (en) * 1985-02-20 1988-07-27 Adrien P. Pascouet Internal secondary bubble pulse suppression

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Legal Events

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