FREMGANGSMAATE OG INNRETNING FOR OVERVAAKNING AV BOREOPERASJONER

摘要

Monitoring equipment for ensuring a well being drilled (18) does not go close to existing production wells (12) comprises transducers coupled to the well being drilled and to the production wells and processing means for determining the attenuation or transfer function between the monitored vibrations from the transducers. Analogue processing circuitry is provided where attenuation is to be determined. Digital processing circuitry is provided where transfer function is to be determined.