EX-6 Distributed Exploration Seismograph

APPLICATIONS

Oil & Gas Exploration Mineral exploration Geotechnical surveys Engineering geology VSP and tomography

Depth-to-rock Fault location Site remediation Surface wave analysis Teaching and Research

The EX-6 Explorer is a versatile, cost-effective tool for collecting quality 24-bit seismic data for both refraction and reflection surveys. Using a laptop computer as the system controller, an innovation pioneered by Seistronix, the EX-6 can be easily configured for small refraction surveys or large oil and gas surveys at a very affordable price.

SYSTEM SOFTWARE

The EX-6 Explorer system software runs on any Windows laptop or desktop system and controls the configuration and management of the spread. In single line operation, line geometry is graphically displayed showing the shot point, roll direction, total number of channels on line, and the active channels in the spread. After each shot, the box serial numbers, location and status, and GPS position of the sources are recorded with the data for future reference.

In multiline operation, the spread configuration and acquisition parameters are controlled by script files which may be created and viewed using the EX-6 software. Up to 64 seismic lines may be deployed, with each line having an arbitrary number of boxes. Line Tap Units (LTU) are used to connect individual lines to the trunk line. Boxes can be distributed arbitrarily on either side of each LTU.

The EX-6 provides a broad range of intuitive display options which allows you to view the data the way you prefer. With a single click you may expand or contract the display in the time or channel direction, display all the even or all the odd traces, or zoom in on an individual channel. Data may be previewed, filtered, AGCed, stacked or unstacked as desired. 

The EX-6 System Software is continuously evolving and updates are regularly provided by Seistronix at no cost via the web. Since the EX-6 Acquisition units employ the latest in flash memory technology, firmware updates and enhancements may be applied right in the field with the boxes connected to the line.

ACQUISITION UNIT
    

The six channel Acquisition Unit (AU) is housed in a heavy duty, waterproof, cast aluminum case with hermetically sealed, stainless steel connectors, and is built to stand up to rough use in the field. The internal electronics are shock mounted, yet are readily accessible for servicing. The EX-6 is also electrically rugged, with all analog signal inputs and digital I/O lines protected with gas discharge tubes. The front end features 24-bit A/D conversion, four remotely selectable preamp gains, and ¼, ½, 1, 2 and 4 ms sample rates. 

To ensure that data is accurately recorded, the EX-6 provides an extensive array of instrument tests, that include amplifier noise, dynamic range, A/D offsets, amplifier pulse, amplifier CMR, timing accuracy, channel to channel crosstalk, phase similarity and gain similarity. Tests can be performed individually or a complete system test can be performed automatically with the test results logged to disk. To locate geophone and cable problems before they affect your data, the EX-6 offers geophone resistance, geophone pulse, geophone similarity, and cable leakage tests.

LINE TAP UNITS

The EX-6 utilizes two different types of line tap units, LTU-S for single line mode and LTU-M for multiline line operation. LTU-S allows offend or split spread shooting for single line surveys. LTU-M provides crosspoint switching and also acts as a repeater in 3D surveys.

6 Line 198 Channel Spread