Avalon Sciences Ltd products

Geochain is established as the complete VSP digital seismic system, operating with up to 62 satellites for maximum logging and recording efficiency and is the result of over five years of research and development. The system is made up of individual satellites of our tried and tested ASR-1 borehole geophone, of which over 1000 are now in use worldwide. The Geochain system has been widely used by major players in the North Sea, North Africa, Gulf of Mexico, Canada and China with outstanding success.

The GeochainSlim is the next development of the field proven VSP and hydraulic fracture monitoring. This system has been designed for use in open or cased holes with all locking arms opening simultaneously to reduce survey time. A maximum bandwidth of 1600Hz, very low electronic noise levels and slim size make the system ideal for hydraulic fracture surveys. The established extra high sensitivity Geochain Quad geophone sensor pack has now been integrated into the GSR design and is now available as a standard configuration. The GeochainSlim system also benefits from the new gapless recording functionality* which is ideal for the continuous requirements of passive monitoring.

Geochain EHP is one of the latest evolutionary branches of the established Geochain VSP digital seismic system.  It is capable of operating with up to 62 satellites for maximum logging and recording efficiency within the most hostile of high pressure environments. The Geochain EHP system is fully compatible with all standard Geochain electronics and sensor modules in addition to all standard surface control panels.

The Geochain System Panel, GSP, has been designed as both the surface recording panel for the new digital Geochain system and as a replacement for our highly successful PDAQ analogue recorder. Over 300 GSP systems are in use today. The panel can have a maximum of sixteen analogue seismic channels along with the standard digital input section. The panel can therefore be used with any analogue borehole seismic tools or with our latest Geochain digital string.

The digital Geochain product ranges are all supplied operating current at surface via a Geochain Power Panel (GPP).  GPP features a Wireline Interface Box (WIB), which enables both DC power and AC data to be transmitted over the same wireline cable. The GPP has inbuilt safety features to maximise user protection during Geochain operation.