Optimal spacing for the wolfcamp in the Delaware basin using data analytics: A case study

Ahmed Alzahabi, Ahmed Kamel, A. Alexandre Trindade, Wade Baustian

Research output: Contribution to conferencePaperpeer-review

1 Scopus citations


One of the remaining puzzle pieces for the Delaware Basin in the Wolfcamp formation is optimal spacing for horizontal wells. Spacing varies with formation characteristics across the Delaware Basin. A solid approach to determining optimal spacing has yet to be found as many operators are unwilling to reveal pertinent information. Among various parameters, numerous completion techniques change the drainage area of wells and may in turn affect optimal spacing. The regression model is expected to add new knowledge and technology to improve recovery efficiency and minimize environmental implications of unconventional resource development. Several spacing tests were implemented in various areas of the Delaware Basin with multiple completion strategies. Public production rates and spacing data were analyzed and combined with well log analysis in conjunction with data analytics. This step led to a newly developed workflow to discover the optimal spacing according to the area. Reservoir parameters such as permeability, fracture width and height, drainage area, reserves, and recovery factors were estimated according to patterns discovered by data analytics. These parameters may lead to determination of the most optimal spacing for different reservoirs within the Delaware Basin, and contribute to a more complete understanding of the area. With these relationships, we hope to fully understand the best way to complete wells drilled in conjunction with one another. Our findings and workflow within the Wolfcamp will be applied to various plays and formations across the unconventional play spectrum. Current workflows and spacing advisors require use of numerical reservoir simulation and fracture simulation. Drainage area, reserves, recovery factors, and fracture height and width are the main unknowns in unconventional plays, and application of data analytics with production, spacing, life of the well on production, and log data is anticipated to solve some of these issues.

Original languageEnglish
StatePublished - 2020
Event54th U.S. Rock Mechanics/Geomechanics Symposium - Virtual, Online
Duration: Jun 28 2020Jul 1 2020


Conference54th U.S. Rock Mechanics/Geomechanics Symposium
CityVirtual, Online


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