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December 1, 1960Transactions of the AIME

Oil Recovery in Five-Spot Pilot Floods

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Authors

BCB.H. CaudleILI.G. Locaric

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Overview

Fluid-flow simulation reveals significant boundary fluid cross-flow in five-spot pilot floods, highlighting the necessity of correcting sweep patterns before full-scale reservoir extrapolation.

Key Points

  • Quantify fluid migration across unconfined boundaries and evaluate sweep-out behavior in five-spot pilot floods to improve extrapolation to full-scale secondary recovery projects.
  • Conducted fluid-flow model experiments simulating an unconfined five-spot pilot waterflood.
  • Evaluated mobility ratios ranging from 0.1 to 10.
  • Analyzed the operational effects of varying the ratio of fluid injection rates to withdrawal rates.
  • Demonstrated that unconfined pilot boundaries permit uninhibited cross-flow, resulting in displaced oil escaping the pilot area while external fluids enter it.
  • Showed that sweep-out patterns and oil recovery rates in five-spot pilot floods deviate systematically from equivalent confined areas in full-scale floods across all tested mobility ratios.

Cite This Study

Caudle et al. (1960) studied this question.

synapsesocial.com/papers/6a88335ddea5055e4b608d94https://doi.org/10.2118/1396-g
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