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Well avoidance with vibration analysis

Well avoidance with vibration analysis. March 2010. Today presentation. Background Basic Concept Equipment used Test results Going Forward. Background. Increasing number of congested platforms Increasing number of HSE issues Increasing number of well shut-ins

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Well avoidance with vibration analysis

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  1. Well avoidance with vibration analysis March 2010

  2. Today presentation • Background • Basic Concept • Equipment used • Test results • Going Forward

  3. Background • Increasing number of congested platforms • Increasing number of HSE issues • Increasing number of well shut-ins • An anti-collision wellhead monitoring system • SPE 22123BP

  4. Basic concept • Vibration sensors on offset wells • Establish baseline “drilling” vibration • Drill ahead, measuring offset well vibration • Log changes in vibration relative to subject well • Calculate “movement” away/towards offset wells • Generate actual distance to generate RT TC plot

  5. Equipment used

  6. Test results • Limited physical separation • GWD main survey reference • Conductor hammered to refusal • Baseline vibration taken with pumps on Slot to be drilled

  7. Conductor driving • Measured whilst driving conductor • Note Drivevs refusal response • Can refusal be predicted?

  8. Close Approach • Baseline Measurement • Remove Pump noise • Normalize power at set frequency band Close approach time Pumps only

  9. Going forward • More tests • Multiple sensors • Reduce signal to noise ratio • Off line analysis of multiple sensors • RT application tested

  10. Questions? March 2010

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