Method and device for selecting and maintaining hydrodynamically connected wells

A method for restoring, maintaining, or increasing oil or gas productivity of a geological formation via locating maximum hydrodynamic connectivity between wells located in said geological formation, comprising:

• positioning a first acoustic/ultrasonic device in a first well located within the geological formation,
• positioning one or more additional acoustic/ultrasonic devices in one or more additional wells located within the geological formation,
• emitting one or more signals in one or more ranges, said emitting being performed by said first device, said one or more signals comprising both ultrasonic and acoustic signals,
• wherein the one or more signals comprises a Fourier transformation of a periodic function,
• receiving of said one or more signals, said receiving being performed by a receiver located on the one or more additional devices,
• standardizing said one or more signals received, said standardizing being based at least in part on a distance between said one or more additional wells and said first well, thus forming one or more standardized figures representing each signal received, and
• determining a value representing a likelihood of hydrodynamic connectivity between said first well and said second well, said value being based on a comparison of signals,
• wherein the determining step accounts for an absorption of ultrasound or an absorption of an acoustic signal.

A system for restoring, maintaining, or increasing oil or gas productivity of a geological formation via determining hydrodynamic connectivity values between wells located in said geological formation, comprising:

• a first acoustic/ultrasonic device positioned in a first well located within said geological formation,
• one or more additional acoustic/ultrasonic devices positioned in one or more additional wells located within said geological formation,
• wherein said first acoustic/ultrasonic device emits one or more signals in one or more ranges, said one or more signals including both ultrasonic and acoustic signals,
• wherein said one or more signals including a Fourier transformation of a periodic function,
• a receiver for receiving said one or more signals, said receiver being located on said one or more additional acoustic/ultrasonic devices,
• a processor for standardizing said one or more signals received, said processing being based at least in part on a distance between said one or more additional wells and said first well, said processor forming one or more standardized figures representing each signal received, said processor controlling an acoustic/ultrasonic processing of said first well and any additional wells determined to be hydrodynamically connected to said first well to increase productivity of an entire system of oil field, and
• a calculator, said calculator determining a value representing a likelihood of hydrodynamic connectivity between said first well and said one or more additional wells, said value being based on a comparison of signals.