초록 ▼

A seismic data acquisition system is featured that utilizes a series of nearly identical seismic shots (SISS) to synchronize and to communicate with novel data acquisition units (NDAU) located in the field. Each SISS seismic shot is carefully timed to provide synchronization to each NDAU, and to all

A seismic data acquisition system is featured that utilizes a series of nearly identical seismic shots (SISS) to synchronize and to communicate with novel data acquisition units (NDAU) located in the field. Each SISS seismic shot is carefully timed to provide synchronization to each NDAU, and to allow the NDAU to correct for the time drift of its internal clock. Further, each NDAU is programmed with a number of menus, which are used to interpret the seismic shots received from a seismic source. Thus, communication from a central or headquarter site to each NDAU is facilitated, allowing for a change in production schedule and other variables. In addition, the disclosed seismic data acquisition system features movable SISS source sites and overlapping production and SISS shots.

대표청구항 ▼

[ What is claimed is:] [1.] A method of field seismic data acquisition, comprising:(a) providing a series of nearly identical seismic shots from a fixed site, said series having at least first and second seismic shots;(b) receiving said first and second seismic shots signal trains at a seismic recei

[ What is claimed is:] [1.] A method of field seismic data acquisition, comprising:(a) providing a series of nearly identical seismic shots from a fixed site, said series having at least first and second seismic shots;(b) receiving said first and second seismic shots signal trains at a seismic receiver remote from said fixed site; and(c) measuring the difference in arrival times between signal trains from said first and second seismic shots.