Geoservices Consulting - Dr John Holroyd

Geological Consulting Services for Gas, Oil & Petroleum Industries

I offer direct, specialised Geological Consulting Services drawn from a wide range of experience in the gas, oil & petroleum industries

Geological Consulting Services for Gas, Oil & Petroleum Industries

I offer direct, specialised Geological Consulting Services drawn from a wide range of experience in the gas, oil & petroleum industries

  Connect with Dr John Holroyd

Geological Consulting Services for Gas, Oil & Petroleum Industries

Key Areas of Geoscience Expertise

I offer direct, specialised Geological Consulting Services drawn from a wide range of experience in the gas, oil & petroleum industries.

  • Over 35 years focused experience in development, production and exploration geology.
  • Wide range of geographic and basin exposure to clastic (deltaic/turbidite) and carbonate areas.
  • Experienced in exploration, risking, equity, asset and audit evaluation, licence rounds & prospect inventory.
  • Proven hydrocarbon finder with economic focus achieving discoveries & reserves enhancements of over 500 mmbbls valued at circa $13bn, including cost huge savings.
  • Confident and consistent long term interactivity with associated subsurface and surface disciplines.
  • Strong and integrated team player with recognised mentoring and leadership skills.
  • Mixed language & cultural familiarity.

Geoscience Background

  • Enterprise Oil Plc, Senior Development Geologist.
  • Britoil plc, Development Geologist.
  • Occidental Petroleum, Exploration Geologist.
  • Libyan Secretariat of Land Development, Wellsite/Project Geologist.
  • Powys County Council, Field Geologist.

Summary of Geoscience Project Experience

  • Actively engaged on numerous technical farm-in/farm-out projects, covering wide range of petroleum systems, basins and geographic locations within the UK, India, Europe, Africa, Asia and the USSR/FSU.
  • Technical auditor of international company oil and gas fields (Nigeria) to SPE standards, as part of a multi-disciplinary team, achieving multi-million $ savings for NNPC.
  • Interfaced extensively with geoscience and reservoir engineer disciplines in all client offices, to support decisive technical application to practical field & operational decisions involving individual development and appraisal wells, workovers, sidetracks and broad/specialised field projects.
  • Completed clastic and carbonate sedimentological projects, involving combinations of basin exploration, evaluation, structural, stratigraphic, statistics, sequence stratigraphy, facies interpretation & log analysis in most areas worked.
  • Monitored/supervised field development internal and outsourced projects, i.e. palaeontology, petrology evaluation, specialised petrophysical studies, core and FMS dipmeter interpretation, to enhance field production and models.
  • Active in 2D/3D seismic & structural interpretation in most technical projects, independently or in tandem with geophysicist, in event-to-well tie evaluation, structural style, seismic facies identification and seismic stratigraphy.
35+
Years Experience
155+
Projects
£28Bn+
Asset Value Found
898K+
Metres Mapped
Geological Consulting Services for Gas, Oil & Petroleum Industries
Geological Consulting Services for Gas, Oil & Petroleum Industries