GB2147700A - Seismic pulse generator for a borehole - Google Patents

Seismic pulse generator for a borehole

Info

Publication number
GB2147700A
GB2147700A GB08430281A GB8430281A GB2147700A GB 2147700 A GB2147700 A GB 2147700A GB 08430281 A GB08430281 A GB 08430281A GB 8430281 A GB8430281 A GB 8430281A GB 2147700 A GB2147700 A GB 2147700A
Authority
GB
United Kingdom
Prior art keywords
hammer
borehole
piston
seismic pulse
pulse generator
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
GB08430281A
Other versions
GB8430281D0 (en
GB2147700B (en
Inventor
Calin Cosma
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.)
GEOTEK Oy
Original Assignee
GEOTEK Oy
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 FI823803A external-priority patent/FI823803L/en
Priority claimed from FI834052A external-priority patent/FI834052A/en
Application filed by GEOTEK Oy filed Critical GEOTEK Oy
Publication of GB8430281D0 publication Critical patent/GB8430281D0/en
Publication of GB2147700A publication Critical patent/GB2147700A/en
Application granted granted Critical
Publication of GB2147700B publication Critical patent/GB2147700B/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
    • G01V1/02—Generating seismic energy
    • G01V1/143—Generating seismic energy using mechanical driving means, e.g. motor driven shaft
    • G01V1/147—Generating seismic energy using mechanical driving means, e.g. motor driven shaft using impact of dropping masses
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V11/00—Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
    • G01V11/002—Details, e.g. power supply systems for logging instruments, transmitting or recording data, specially adapted for well logging, also if the prospecting method is irrelevant
    • G01V11/005—Devices for positioning logging sondes with respect to the borehole wall
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/40—Seismology; Seismic or acoustic prospecting or detecting specially adapted for well-logging
    • G01V1/52—Structural details

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Remote Sensing (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Clamps And Clips (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

A signal device for the generation of a seismic pulse, comprising an elongated tubular unit to be fitted in a borehole and consisting of a hammer part (27) and a clamping part (16), said hammer part (27) comprising a hammer (29) for hitting a striking head (28) and said clamping part (16) comprising at least on expander plate (19) extending hydraulically from the wall of said device and serving to lock the device in a borehole at a desired level. Said hammer part (27) is provided with a double-action hydraulic piston (47) whose rod (46) has mounted on its free end a locking bell (37, 38), which during the stroke of piston (47) engages with the hammer pin (32) of said spring-loaded hammer (29) and towards the end of the piston return movement disengages from said hammer pin.
GB08430281A 1982-11-08 1983-11-07 Seismic pulse generator for a borehole Expired GB2147700B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI823803A FI823803L (en) 1982-11-08 1982-11-08 EN SEISMISK PULS AOSTADKOMMANDE SIGNALANORDNING
FI834052A FI834052A (en) 1983-11-04 1983-11-04 SEISMISK PULSGENERATOR FOER BORRHAOL.
PCT/FI1983/000068 WO1984001834A1 (en) 1982-11-08 1983-11-07 Seismic pulse generator for a borehole

Publications (3)

Publication Number Publication Date
GB8430281D0 GB8430281D0 (en) 1985-01-09
GB2147700A true GB2147700A (en) 1985-05-15
GB2147700B GB2147700B (en) 1986-04-23

Family

ID=26157391

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08430281A Expired GB2147700B (en) 1982-11-08 1983-11-07 Seismic pulse generator for a borehole

Country Status (6)

Country Link
CA (1) CA1211551A (en)
DE (1) DE3390274T1 (en)
GB (1) GB2147700B (en)
NO (1) NO842724L (en)
SE (1) SE440959B (en)
WO (1) WO1984001834A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4928783A (en) * 1989-05-22 1990-05-29 Exxon Production Research Company Well borehole sound source

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4805726A (en) * 1985-11-12 1989-02-21 Schlumberger Technology Corporation Controlled implosive downhole seismic source
CN1022139C (en) * 1986-03-18 1993-09-15 切夫伦研究公司 Nondestructive seismic vibrator source and processes of utilizing vibrator to obtain information about geologic formations
FR2678073B1 (en) * 1991-06-24 1993-09-03 Inst Francais Du Petrole PERCUSSION ELASTIC WAVE SOURCE FOR WELLS.
US6394221B2 (en) * 2000-03-03 2002-05-28 Calin Cosma Swept impact seismic technique and apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2102754A (en) * 1936-07-13 1937-12-21 Baker L Shannon Jar
US3193046A (en) * 1963-07-12 1965-07-06 Imp Ind Inc Release mechanism for impact seismic impulse generating apparatus
US3718205A (en) * 1970-06-22 1973-02-27 D Fair Bore hole seismic transducer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU890323A1 (en) * 1980-04-24 1981-12-15 Институт Горного Дела Со Ан Ссср Oscillation source for well-logging

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2102754A (en) * 1936-07-13 1937-12-21 Baker L Shannon Jar
US3193046A (en) * 1963-07-12 1965-07-06 Imp Ind Inc Release mechanism for impact seismic impulse generating apparatus
US3718205A (en) * 1970-06-22 1973-02-27 D Fair Bore hole seismic transducer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DERWENT'S ABSTRACT NO A1618 J/47 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4928783A (en) * 1989-05-22 1990-05-29 Exxon Production Research Company Well borehole sound source

Also Published As

Publication number Publication date
SE440959B (en) 1985-08-26
NO842724L (en) 1984-07-05
CA1211551A (en) 1986-09-16
DE3390274T1 (en) 1985-07-11
SE8406228D0 (en) 1984-12-07
GB8430281D0 (en) 1985-01-09
WO1984001834A1 (en) 1984-05-10
GB2147700B (en) 1986-04-23
SE8406228L (en) 1984-12-07

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Legal Events

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