Techlog Formation Pressure | SLB

Techlog Formation Pressure

Analyze your formation pressure data. The graphical tools in the pretest interpretation phase enable easy quality control of the raw pressure versus time data to generate a single dataset. You can use the dataset generated from pretest interpretation phase in the gradient analysis phase (in single- and multiwell environments) to get fluid typing from determination of densities, hydraulic zones, and contacts.


Multiwell environments

The FP° module can be used in single- or multiwell mode. It is possible to work by group (for example using hydraulically connected units) or use multi-well data to define common fluid gradients and free fluid levels between the wells.

Module connections

FP° results can be combined with other Techlog modules, such as the Saturation-Height Modeling and Fluid Contact modules. This allows the user to display, cross-check, and validate contacts derived from other physical measurements. It is also possible to create and use temporary fluid contacts.

Pretest interpretation

Within an interactive environment and with graphical tools, the Formation Pressure (FP°) module enables analysts to:

  • Start analysis using raw data.
  • Display and review the quality of the pressure picks, adjusting final build up pressure, pressure drawdown, and before-and-after pressure.
  • Use QC formula to help pick automatically the best pressure from the multiple pretests for each station.

Gradient analysis

Benefits of the Techlog FP° module include:

  • The ability to perform multi-well and pressure data analysis to get fluid typing from determination of densities, hydraulic zones, and free fluid levels.
  • A graphical interface for faster and intuitive analysis.
  • Integration of the fluid connectivity concept: hydraulic zones defining potential reservoir regions.
  • A quality control input, which can be used as a weighting factor for gradient and density calculation.
  • Defining of free fluid levels and hydraulic barriers.
Techlog Formation Pressure
Pressure-depth plot displaying contact uncertainties and gradient analysis.

Investigating uncertainties

The FP° module also allows analysts to investigate the uncertainties. This includes the ability to:

  • Input uncertainty ranges for depth and pressure measurements.
  • Estimate ranges of gradients consistent with the uncertainty model.
  • Quantify the impact on fluid levels or connectivity of data uncertainty.
  • Perform known gradient comparison.
  • Conduct excess pressure analysis.
A group sitting in an auditorium watching a presenter speak on a characterization model image

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