In addition, while DAS arrays offer a low-cost way to collect dense acoustic data passively or actively, data quality is lower than from conventional geophones, Biondi says. Instead, some amount of real-time processing will be needed near the source.” “It is unlikely that all of the data can move in bulk across the network. “A simple DAS fiber creates terabytes of data every day,” he explains. When and how to process those data are also subjects of study. “Others are working with both active and passive DAS data.” “One Stanford student is experimenting with rotational sensors that record six or seven components,” says Biondi.

This is putting a strain on computational capability, but it does open the possibility of a lot of integration of geophysical and other data.”ĭata sources are evolving rapidly, becoming less expensive and providing denser data. “Beyond seismic, there are streams of data from sensors measuring temperature, pressure, flow, and other physical information. “The big change taking place is in the breadth of data we can get with different kinds of sensors,” he states. These are just two examples of how dramatically the volume of technical data is rising, says Biondo Biondi, professor of geophysics at Stanford University. Distributed acoustic sensors (DAS) record continuous seismic data very cheaply, taking another quantum step in the amount of data coming from the reservoir during exploration, development and production.

Permanent sensors both on land and on the seafloor are collecting a new stream of seismic data that can be used for repeated active seismic, microseismic analysis, and continuous passive monitoring.

Hampson russell cgg