Development Geologist: Horizontal Wells & Reservoir Insight

Riley Permian; Oklahoma City (OK); On-site; USD 110,000 - 170,000; Full time

Job summary

Riley Permian in Oklahoma City is seeking a Development Geologist to support operated asset development through integrated subsurface interpretation and drilling execution.

You will focus on horizontal well planning, reservoir characterization, and landing zones, closely coordinating with drilling, completions, reservoir engineering, land, and operations teams to ensure accurate wellbore placement and optimized field development.

Qualifications

• Bachelor’s degree in Geology, Geoscience, or Earth Science required; Master’s degree preferred.
• Experience with horizontal well planning and operations geology workflows.

Responsibilities

• Perform integrated geological interpretation using well logs, cuttings, core, drilling data, and production results to characterize reservoir quality.
• Build and maintain maps, cross-sections to support horizontal well planning and field development decisions.
• Identify optimal landing zones and lateral targets through analysis of offset wells and subsurface trends.
• Develop pre-spud geological prognoses, targets, and hazard assessments to support drilling execution.
• Provide operations geology support, including coordination with geosteering vendors and real-time interpretation to ensure accurate wellbore placement.
• Integrate mud log data, LWD/MWD responses, and drilling observations to refine interpretations during drilling.
• Conduct post-well evaluations and lookbacks to incorporate results into future development plans.
• Support spacing, stacking, and sequencing decisions through reservoir performance analysis and offset well interference.

Skills

Horizontal wells planning

Geographix

StarSteer

LWD/MWD interpretation

Team collaboration

Education

Bachelor’s degree in Geology or Geoscience

Master’s degree preferred

Tools

Geographix

StarSteer

Job description

Riley Permian in Oklahoma City is seeking a Development Geologist to support operated asset development through integrated subsurface interpretation and drilling execution.

You will focus on horizontal well planning, reservoir characterization, and landing zones, closely coordinating with drilling, completions, reservoir engineering, land, and operations teams to ensure accurate wellbore placement and optimized field development.