GB1114286A - Method and means for submarine prospection - Google Patents

Method and means for submarine prospection

Info

Publication number
GB1114286A
GB1114286A GB3946965A GB3946965A GB1114286A GB 1114286 A GB1114286 A GB 1114286A GB 3946965 A GB3946965 A GB 3946965A GB 3946965 A GB3946965 A GB 3946965A GB 1114286 A GB1114286 A GB 1114286A
Authority
GB
United Kingdom
Prior art keywords
sea
bed
transmitter
receiver
ship
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
GB3946965A
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.)
Compteurs Schlumberger SA
Original Assignee
Compteurs Schlumberger SA
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
Priority claimed from FR988316A external-priority patent/FR1417192A/en
Priority claimed from FR23727A external-priority patent/FR88374E/en
Application filed by Compteurs Schlumberger SA filed Critical Compteurs Schlumberger SA
Publication of GB1114286A publication Critical patent/GB1114286A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/87—Combinations of sonar systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • 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
    • G01V1/3808—Seismic data acquisition, e.g. survey design

Abstract

1,114,286. Geophysical prospecting. COMPAGNIE DES COMPTEURS. 1 5 Sept., 1965 [16 Sept., 1964; 7 July, 1965], No. 39469/65. Heading H4D. In a system for examining the geological structure of the sea-bed, the attenuation of lowfrequency (0À1 c/s. to 1000 c/s.) acoustic waves reflected from the sea-bed and received by a receiver maintained at a constant distance above the sea-bed is measured. Continuous wave signals of substantially constant amplitude and of fixed or varying frequency are emitted by a towed transmitter 12 which may be maintained at a constant depth, below sea-level. One or more receivers 22 are carried by diving vanes 24 which continuously transmit measurements of their distances from the sea-bed to a ship-borne system 21. System 21 controls the length of a cable 25 between the ship and a float 23 so as to maintain constant the distances of a receiver 22 from the sea-bed and from the transmitter 12. Received signals are recorded, together with the geographical location of the ship, by ship-borne equipment 31 and their attenuation, after taking into account parameters such as the frequency of the transmitted waves, the immersion depth of the transmitter 12, and the distance between transmitter 12 and receiver 22, provides an indication of the geological nature of the sea-bed. The distance of a receiver 22 from the sea-bed may also be recorded and taken into account in interpreting the attenuation of the received signals. To aid in interpretation of the recorded signals, a plurality of records may be made for a region of the sea-bed with different transmission frequencies or with various distances between the transmitter 12 and receivers 22. The distance of a receiver 22 from the sea-bed may be varied according to the water depth if variations in the water depth are significant.
GB3946965A 1964-09-16 1965-09-15 Method and means for submarine prospection Expired GB1114286A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR988316A FR1417192A (en) 1964-09-16 1964-09-16 Acoustic method and device for underwater prospecting
FR23727A FR88374E (en) 1965-07-07 1965-07-07 Acoustic method and device for underwater prospecting

Publications (1)

Publication Number Publication Date
GB1114286A true GB1114286A (en) 1968-05-22

Family

ID=26164600

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3946965A Expired GB1114286A (en) 1964-09-16 1965-09-15 Method and means for submarine prospection

Country Status (2)

Country Link
DE (1) DE1473930A1 (en)
GB (1) GB1114286A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2481809A1 (en) * 1980-04-30 1981-11-06 France Etat Sonar for classification of submerged objects - has receiving transducer in same vertical plane as lowered transmitting hydrophones
GB2248949A (en) * 1990-07-12 1992-04-22 Geco As Stabilizing seismic energy sources
CN107390293A (en) * 2017-07-05 2017-11-24 国家海洋局第二海洋研究所 A kind of marine exploration system and control method for shallow water islands and reefs area

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2481809A1 (en) * 1980-04-30 1981-11-06 France Etat Sonar for classification of submerged objects - has receiving transducer in same vertical plane as lowered transmitting hydrophones
GB2248949A (en) * 1990-07-12 1992-04-22 Geco As Stabilizing seismic energy sources
GB2248949B (en) * 1990-07-12 1993-09-08 Geco As Method of and apparatus for stabilizing sources of seismic energy
CN107390293A (en) * 2017-07-05 2017-11-24 国家海洋局第二海洋研究所 A kind of marine exploration system and control method for shallow water islands and reefs area

Also Published As

Publication number Publication date
DE1473930A1 (en) 1969-02-06

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