Petrophysics · Rock physics · Reservoir evaluation

A deeper understanding
of your reservoir.

Specialist petrophysics and rock physics for exploration and field development, from well-log interpretation to integrated reservoir studies.

Based in
New Delhi, India
Experience across
India · Middle East · Singapore
Co-author
Elsevier handbook, 2018
Papers at
SPWLA · IMAGE · SCA

01 Services

From formation evaluation
to reservoir decisions.

Technical support for complex carbonate and clastic reservoirs, bringing together log measurements, rock physics and reservoir modelling.

Petrophysical evaluation

Deterministic and probabilistic interpretation of carbonate and clastic formations, supported by advanced logging measurements.

  • NMR, elemental spectroscopy and dielectric logs
  • Dipole acoustic interpretation
  • Facies and uncertainty analysis

Rock physics & acoustics

Workflows that connect elastic rock properties with reservoir characteristics and the interpretation of acoustic data.

  • Rock physics templates
  • Effective medium modelling
  • Fluid substitution and velocity inversion

Integrated reservoir studies

Petrophysical inputs for field development, linking formation evaluation with static and dynamic reservoir models.

  • Saturation-height modelling
  • Reservoir facies characterisation
  • Petrophysical support for model integration

Exploration & well support

Specialist advice for early asset evaluation and operational petrophysics throughout well placement and drilling.

  • Pre-bid petrophysics and rock physics advice
  • Geosteering and horizontal well support
  • Logging-while-drilling evaluation

02 Leadership

Founder & Head, RockLog Consultancy

Vimal Saxena

Vimal Saxena founded and leads RockLog Consultancy. His work spans petrophysics, borehole acoustics and rock physics, with industry experience in India, the Middle East and Singapore.

His technical publications explore the relationship between acoustic measurements, pore structure and reservoir properties. He is co-author of Elsevier’s Handbook of Borehole Acoustics and Rock Physics for Reservoir Characterization.

Education

M.Tech., Solid State Materials
IIT Delhi · 1978–1980

View LinkedIn profile

Selected experience

2012–2015
Salamander EnergyPetrophysics Advisor & Head · Singapore
2006–2012
Petroleum Development OmanLead Petrophysicist; Exploration Team Lead (Petrophysics) · Oman
1985–2006
ONGCPetrophysics and research, including the ONGC–Schlumberger Joint Research Center · India
Author biography at Elsevier

03 Featured publication

Elsevier · 2018

Handbook of Borehole Acoustics and Rock Physics for Reservoir Characterization

Vimal Saxena · Michel Krief · Ludmila Adam

ISBN 978-0-12-812204-4

From acoustic theory
to field application.

A practical reference connecting borehole acoustic measurements with the physics of reservoir rocks. The book explains how wave propagation, logging and waveform interpretation can inform reservoir evaluation, using core studies and field examples.

Written for geoscientists, petroleum professionals and students, it combines the underlying models with workflows for exploration, development and drilling support.

Explore the book’s topics
  • Wave propagation and borehole acoustic logging
  • Rock physics models and sonic porosity
  • Permeability, saturation and anisotropy
  • Rock strength, stress and core elasticity
  • Cased-hole acoustics and practical workflows

04 Research

Selected papers.

Research by Vimal Saxena on formation evaluation, pore structure and acoustic rock properties.

05 Contact RockLog

Let’s discuss your
reservoir challenges.

Tell us about your project, the technical challenge and the support you need.