GB1382971A - Controlled buoyancy system for seismic streamers - Google Patents

Controlled buoyancy system for seismic streamers

Info

Publication number
GB1382971A
GB1382971A GB1605973A GB1605973A GB1382971A GB 1382971 A GB1382971 A GB 1382971A GB 1605973 A GB1605973 A GB 1605973A GB 1605973 A GB1605973 A GB 1605973A GB 1382971 A GB1382971 A GB 1382971A
Authority
GB
United Kingdom
Prior art keywords
cable
depth
oil
predetermined depth
bellows
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
GB1605973A
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.)
WHITEHALL ELECTRONICS CORP
Original Assignee
WHITEHALL ELECTRONICS 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 WHITEHALL ELECTRONICS CORP filed Critical WHITEHALL ELECTRONICS CORP
Publication of GB1382971A publication Critical patent/GB1382971A/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
    • G01V1/3817—Positioning of seismic devices
    • G01V1/3826—Positioning of seismic devices dynamic steering, e.g. by paravanes or birds

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Geology (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Environmental & Geological Engineering (AREA)
  • Oceanography (AREA)
  • Remote Sensing (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

1382971 Automatic depth control WHITEHALL ELECTRONICS CORP 4 April 1973 [16 Feb 1973] 16059/73 Heading G3R A flexible, liquid filled marine seismic detector cable has a depth control system including a pressure sensing device in the cable which, according to whether the cable is below or above a predetermined depth, closes an appropriate contact to open an electrically operated inlet or outlet valve respectively allowing liquid to flow into or out of the cable, thus regulating the buoyancy of the cable to maintain it at the predetermined depth. In the embodiment, each section of the cable, which includes hydrophones and is filled with oil, has bellows 27 in contact with the water via aperture 26B and responsive to the water pressure, closing contacts 29A or 29B if the cable moves below or above the predetermined depth. When closed, contacts 29A or 29B energize inlet or outlet valves (32, 33) Figs. 4 to 6 (not shown) allowing pressurized oil, from a supply in the vessel towing the cable, to flow via pipe 23 into or out of cable sections 31 to regulate the cable depth. The bellows, which can be replaced for example by a diaphragm, may be adjustable by signals from the vessel to set the required depth. The control system may be switched off when storing the cable to avoid loss of oil.
GB1605973A 1973-02-16 1973-04-04 Controlled buoyancy system for seismic streamers Expired GB1382971A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US33281673A 1973-02-16 1973-02-16

Publications (1)

Publication Number Publication Date
GB1382971A true GB1382971A (en) 1975-02-05

Family

ID=23299968

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1605973A Expired GB1382971A (en) 1973-02-16 1973-04-04 Controlled buoyancy system for seismic streamers

Country Status (6)

Country Link
CA (1) CA976652A (en)
DE (1) DE2332495A1 (en)
FR (1) FR2218572B1 (en)
GB (1) GB1382971A (en)
IT (1) IT985062B (en)
NL (1) NL7310375A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4135141A (en) * 1977-03-01 1979-01-16 Whitehall Corporation Marine seismic streamer with depth sensor calibrating means
FR2798198B1 (en) * 1999-09-07 2001-10-26 Sercel Rech Const Elect CABLE, ESPECIALLY SEISMIC FLUTE, COMPRISING SEVERAL CHAMBERS FORMING A FLOAT IN A STRAP AND TOOLS FOR FILLING, DEGASSING OR COMMUNICATING THE CHAMBERS OF SAID CABLE

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3112724A (en) * 1961-02-08 1963-12-03 Anelex Corp Deep diving submarine
US3371739A (en) * 1966-05-23 1968-03-05 Whitehall Electronics Corp Of Means for variably controlling the buoyancy of a seismic detection streamer

Also Published As

Publication number Publication date
IT985062B (en) 1974-11-30
NL7310375A (en) 1974-08-20
CA976652A (en) 1975-10-21
FR2218572A1 (en) 1974-09-13
DE2332495A1 (en) 1974-08-22
FR2218572B1 (en) 1977-05-13

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Legal Events

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