发明名称 |
System for acquiring and recording signals from a group of sensors situated in sounding wells. |
摘要 |
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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申请公布号 |
EP0294284(A1) |
申请公布日期 |
1988.12.07 |
申请号 |
EP19880401317 |
申请日期 |
1988.05.31 |
申请人 |
INSTITUT FRANCAIS DU PETROLE |
发明人 |
CRETIN, JACQUES;THEROND, JEAN-FRANCOIS |
分类号 |
G01V1/40;E21B47/12;G01V1/22;G01V1/44 |
主分类号 |
G01V1/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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