Data determine the optimal drawdown for woodford and mayes in theanadarko basin

Ahmed Alzahabi, A. Alexandre Trindade, Ahmed Kamel, Abdallah Harouaka, Wade Baustian, Catherine Campbell

Research output: Contribution to conferencePaperpeer-review


One of the continuing puzzle pieces for all unconventional plays is drawdown (DD) technique for optimalReturn on Investment (ROI). A solid approach to determine this valuable piece of information has yet tobe found, as many operators are reluctant to reveal the production, pressure, and completion data required.Among multiple parameters, various completion and spacing parameters add to the complexity of theproblem. This paper aims to determine which drawdown strategy leads to the highest return in the AnadarkoBasin,, specifically evaluating the Woodford and Mayes formation. Several drawdown techniques wereused within the Anadarko Basin in conjunction with different completion techniques. Private productionand completion data were analyzed and combined with well log analysis in conjunction with data analyticstools. This case study explores a new strategy to drawdown producing wells within the Anadarko basin toachieve ultimate ROI. We perform data analytics utilizing analytics (scatterplot smoothing) to develop arelationship between two dependent variables Estimated Ultimate Recovery (EUR) and Initial Production(IP) for 180 days of Oil vs. drawdown. We present a model that evaluates horizontal well production basedon drawdown parameters. Key data were estimated using reservoir and production parameters. The dataled to determination of the most optimal drawdown technique for different reservoirs within the AnadarkoBasin. This result may help professionals fully understand the Anadarko Basin. By use of these optimalparameters, we hope to completely understand the best way to drawdown wells when they are drilledsimultaneously. Our findings and workflow within the Woodford and Mayes formations may be applied tovarious plays and formations across the unconventional play spectrum. Optimal drawdown techniques inunconventional reservoirs could add billions of dollars in revenue to a company's portfolio and increase rateof return dramatically, as well as offer a new understanding of the reservoirs in which we are dealing with.

Original languageEnglish
StatePublished - 2020
EventSPE Annual Technical Conference and Exhibition 2020, ATCE 2020 - Virtual, Online
Duration: Oct 26 2020Oct 29 2020


ConferenceSPE Annual Technical Conference and Exhibition 2020, ATCE 2020
CityVirtual, Online


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