This course provides participants with some experience in qualitative log interpretation.
Geoscientists and technicians having an experience in qualitative log interpretation and willing to perform quantitative reservoir evaluation.
Degree in G&G.
Participants should know the principles and applications of common wireline logging tools and should know how to perform a quick look (lithology, porosity, Rw, Sw).
PREPARATION FOR QUANTITATIVE LOG ANALYSIS
Petrophysical concepts and relationships.
Quality control of the data.
Determination of geological formations and reservoirs - Zonations.
Environmental corrections of logs. Determination of Rt, Rxo, Di.
Case studies (water and oil based muds).
INTERPRETATION OF CLEAN FORMATIONS
Determination of fluid contacts (WOC, GOC).
Determination of matrix and fluid parameters, Rw (SP, Ratio, Rwa).
Determination of lithology, porosity, fluid type, water and hydrocarbon saturations.
Cross plots techniques: N-D-S, Pe-RHOB, K-Th, etc.
QUANTITATIVE LOG INTERPRETATION OF SHALY FORMATIONS (deterministic approach)
Influence of shale on logging tool response. Introduction to complex lithology - D-N cross-plot.
Determination of shale parameters, shale content Vsh and effective porosity.
Hydrocarbon effects on logs and hydrocarbon correction.
Determination of water and hydrocarbon saturations (various equations).
Comparison of porosity and permeability results to core data (PHI-K relationship and SCAL).
Determination of net sand, net reservoir and net pay thicknesses and associated characteristics (Vsh, H, Phie, So).
Case studies: integration & interpretation of pressure tests and NMR data, if available.
Cross-section between wells and comparison of interpretation results.
OTHER INTERPRETATION METHODS
Introduction to the multi-mineral model and general optimization method.
Upon completion of the course, participants will be able to:
perform sound quality-control and environmental correction of logs, determine Rt, Rxo, Di,
evaluate shale content of reservoirs, apply shale and hydrocarbon corrections,
perform quantitative log interpretation in case of water and oil based mud, determine porosity, permeability, net sand, net reservoir and net pay characteristics.
Ways & Means
Hand computations followed by petrophysical software sessions.
Software used during workshops: with courtesy of Senergy.
To French entities : IFP Training is referenced to DataDock ; you may contact your OPCO about potential funding.
Please contact our disabled persons referent to check the accessibility of this training program : firstname.lastname@example.org