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Lightning protection of Seismic sensor network by means of copper wire

IP.com Disclosure Number: IPCOM000245576D
Publication Date: 2016-Mar-18
Document File: 3 page(s) / 288K

Publishing Venue

The IP.com Prior Art Database

Abstract

The present application disclose a design for a seismic sensor spread that incorporates equipment that reduces the damage that occurs as a result of a lighting strike. According to an embodiment, sensor base plates are interconnected with a copper cable to provide a better path for currents caused by ground potential lift from lightning strokes.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 54% of the total text.

Page 01 of 3

Page 1 of 3

Title: Lightning protection of Seismic sensor network by means of copper wire

BACKGROUND

Land seismic systems include a number of components. One component is the sensor unit, which can include a seismic sensor as well as other electronic components such as compasses, clocks, memory devices and communication devices. Seismic sources, such as vibrators, generate impulses that travel into the earth and reflect of subterranean formations. The reflections are sensed by the sensors and data is generated that, when processed, can show subterranean features such as mineral deposits, oil, or gas. In some seismic spreads the sensor units are connected together with cables that can transmit power and data, both seismic as well as other data such as quality control related data. If a lighting strike occurs directly to a component of the spread, or in close proximity, damage can happen not only to the strike location of the spread, but also other components connected in the spread by way of the cable that are not proximate to the strike. It is therefore beneficial to limit the damage that lighting will create when striking a spread or striking near a spread.

SUMMARY

The present application disclose a design for a seismic sensor spread that incorporates equipment that reduces the damage that occurs as a result of a lighting strike. According to an embodiment, sensor base plates are interconnected with a copper cable to provide a better path for currents caused by ground potential lift from lightning strokes.

The following model can be used to describe the resistance along the cable:


Page 02 of 3

Page 2 of 3

The Sensor Units (SUs) can be buried about 25 cm below the surface at regular distances. The SU has a metal base plate that gives some resistance to the Remote Earth (RE).

RE is the actual body that is able to assimilate the lighting charge. RE is so...