Title:
【発明の名称】削井内に吊下した一連のセンサからの信号を収集処理記録するシステム
Document Type and Number:
Japanese Patent JP2782514
Kind Code:
B2
Abstract:
System for acquiring and recording signals furnished by a set of sensors fitted in one or more probes lowered into a well on the end of a multi-purpose cable.
Various signals to be transmitted are multiplexed before being applied to an acquisition chain (15-19) adapted for amplifying them, digitising them and coding them before applying them to a transmission channel (L) in the form of blocks of digitised words. The multiplexing means can comprise several multiplexing units. The sampling frequency for each signal and the make-up of the blocks of words are adapted to the number of units actually used. Inside the surface rig, the blocks of words are split up and arranged inside a memory in a single mode suitable for all the blocks whatever their make-up.
Application to seismic prospecting in drilling operations for example.
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Inventors:
JATSUKU KURETAN
JANNFURANSOWA TERON
JANNFURANSOWA TERON
Application Number:
JP13718388A
Publication Date:
August 06, 1998
Filing Date:
June 03, 1988
Export Citation:
Assignee:
ANSUCHI* FURANSE DEYU PETOROORU
International Classes:
G01V1/40; E21B47/12; G01V1/22; G01V1/44; (IPC1-7): G01V1/40; G01V1/22
Attorney, Agent or Firm:
Shuta Sekine