FR2235376A1 - Seismic testing shock generator - compressed gas release controlled to prevent secondary shocks - Google Patents

Seismic testing shock generator - compressed gas release controlled to prevent secondary shocks

Info

Publication number
FR2235376A1
FR2235376A1 FR7323969A FR7323969A FR2235376A1 FR 2235376 A1 FR2235376 A1 FR 2235376A1 FR 7323969 A FR7323969 A FR 7323969A FR 7323969 A FR7323969 A FR 7323969A FR 2235376 A1 FR2235376 A1 FR 2235376A1
Authority
FR
France
Prior art keywords
compressed gas
chamber
gas release
prevent secondary
seismic testing
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.)
Granted
Application number
FR7323969A
Other languages
French (fr)
Other versions
FR2235376B1 (en
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.)
Texaco Development Corp
Original Assignee
Texaco Development 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 Texaco Development Corp filed Critical Texaco Development Corp
Priority to FR7323969A priority Critical patent/FR2235376A1/en
Publication of FR2235376A1 publication Critical patent/FR2235376A1/en
Application granted granted Critical
Publication of FR2235376B1 publication Critical patent/FR2235376B1/fr
Granted 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
    • G01V1/02—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

Abstract

A seismic testing power of compressed gas type with a high pressure chamber to hold a charge, a piston closing one end of the chamber, which is held in position by high pressure gas in a chamber on its opposite side, and means to release the charge without the generation of secondary bubble impulses. This may be effected by control of the outlet aperture dimensions with a large ratio of width to length, and the provision of an auxiliary piston. Outlet chamber is equal to auxiliary chamber volume.
FR7323969A 1973-06-29 1973-06-29 Seismic testing shock generator - compressed gas release controlled to prevent secondary shocks Granted FR2235376A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7323969A FR2235376A1 (en) 1973-06-29 1973-06-29 Seismic testing shock generator - compressed gas release controlled to prevent secondary shocks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7323969A FR2235376A1 (en) 1973-06-29 1973-06-29 Seismic testing shock generator - compressed gas release controlled to prevent secondary shocks

Publications (2)

Publication Number Publication Date
FR2235376A1 true FR2235376A1 (en) 1975-01-24
FR2235376B1 FR2235376B1 (en) 1977-05-13

Family

ID=9121807

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7323969A Granted FR2235376A1 (en) 1973-06-29 1973-06-29 Seismic testing shock generator - compressed gas release controlled to prevent secondary shocks

Country Status (1)

Country Link
FR (1) FR2235376A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996020414A1 (en) * 1994-12-23 1996-07-04 British Gas Plc Seismic pulse generator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996020414A1 (en) * 1994-12-23 1996-07-04 British Gas Plc Seismic pulse generator
US6260657B1 (en) * 1994-12-23 2001-07-17 Bg Plc Seismic pulse generator

Also Published As

Publication number Publication date
FR2235376B1 (en) 1977-05-13

Similar Documents

Publication Publication Date Title
SE7314083L (en)
SE7704922L (en) PYROTECHNICAL DEVICE FOR CLOSING A PIPELINE
GB1242207A (en) Improvements in gas igniters
GB1135524A (en) Improvements in or relating to vacuum motors
GB1208183A (en) Improvements in or relating to pneumatic seismic sources
IL30608A0 (en) Open chamber breech mechanism with propellant gas actuated cylinder
FR2235376A1 (en) Seismic testing shock generator - compressed gas release controlled to prevent secondary shocks
ES388116A1 (en) Pressure equalization means between compartments in a puffer circuit interrupter
NL7308780A (en) Seismic testing shock generator - compressed gas release controlled to prevent secondary shocks
GB1149556A (en) Reserve power supply unit
GB1108255A (en) Hydraulic accumulators
ES258369A1 (en) Multi-position power cylinder and control means therefor
GB1381217A (en) Explosive primer with actuating means
GB861805A (en) Deferred action electric battery
CA614772A (en) Impelled charge gas explosion turbine with constant volume, pressure raising combustion chambers
GB1248432A (en) Improvements in or relating to seismic charge assemblies for marine exploration purposes
SU361353A1 (en) HYDRAULIC DAMPER
ES302666A1 (en) Improvements in the closure systems of the electrical accumulators (Machine-translation by Google Translate, not legally binding)
JPS5258327A (en) Semiconductor memory unit
GB1016585A (en) Improvements in projectiles for practice ammunition
ES407352A2 (en) Fluid logic elements
FR2109068A5 (en) Self-ejecting buckshot cartridge case
SU531415A1 (en) GAS PRESSURE REGULATOR
ES353982A1 (en) Relay switch with diaphragm operated by explosive gas mixture
JPS56124677A (en) Ignition timing controlling apparatus for engine

Legal Events

Date Code Title Description
ST Notification of lapse