Home  >  Operations  >  Overview


Primary Area of Operation

Northwest Shelf of the Permian Basin

Riley Exploration - Permian, Inc. (NYSE American: REPX) primary operations are in the Northwest Shelf of the Permian Basin, in the prolific Wasson Field complex in southern Yoakum County, Texas. The Wasson field complex has produced over 2.1 billion bbls oil over the past century from primary depletion, infield drilling, waterflooding and tertiary CO2 injection. REPX produces in what is called the Champions project which is located on the west flank of the Wasson anticline. REPX produces primarily from horizontal wells in the Permian age San Andres formation at approximately 5,200’. REPX began horizontal drilling operations in Champions project in 2015 drilling its first well here while drawing on its extensive experience in horizontal drilling, particularly in the Eagle Ford Shale play in South Central Texas.

The San Andres formation in the Wasson field Complex has several distinct advantages in both reservoir quality and economics over shale plays and provides very attractive production rates, ultimate recovery (EUR) and strong rates of return with some of the lowest finding and development costs in the industry. This is due to several factors:

Reservoir Quality:

  • Massive continuous carbonate reef complex with structural and stratigraphic closure (oil trapping)
  • Moderate depth (5,200’ average compared to most shales at 8,000-12,000’)
  • Thick productive intervals (>200’)
  • Greater porosity than shales (more oil in place)
  • Much higher permeability (ability to produce the oil from the rock at higher rates); also results in much shallower declines vs shales
  • High EUR’s (several wells over 1 mmbo EUR)


  • Oil dominated revenues
  • Lower drilling costs
  • Lower frac and completion costs
  • Contiguous acreage position allows for efficient infrastructure for operations
  • Attractive production rates and low decline production