Formation Pressure

Control the pressure

Quality control

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

• start analysis using raw data
• concatenate all pressure readings into a pressure-time array by depth format
• display and review the quality of the pressure picks, adjusting final build up pressure, pressure drawdown, and before-and-after pressure.

Analysis

Benefits of the Techlog FP° module include

• the ability to perform multiwell and pretest data analysis for contacts and fluid typing by determination of densities
• a graphical interface for faster and intuitive analysis
• integration of the fluid connectivity concept: groups defining potential reservoir regions
• a quality control output, which can be used as a weighting factor for gradient and density calculation
• the defining of free fluid levels and hydraulic barriers.

Investigate 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 residuals analysis.

Multiwell

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 multiwell 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 Saturation-Height Modeling and Fluid Contact. 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.