Method and system for statistical pressure gradient and fluid contact analysis

A method of evaluating a pressure gradient test comprising:

• performing a pressure gradient test to measure a set of pressure data for a set of depth positions;
• determining the measured pressure gradient for at least one fluid in a formation;
• selecting a confidence level for at least one of a depth and a pressure measurement for each fluid;
• performing a measured pressure gradient error analysis for each fluid;
• plotting a confidence level boundary plot displaying the set of measured pressure data, the measured pressure gradient, and the outer boundaries of the measured pressure gradient error for each fluid.

A computer system comprising:

• a processor;
• and
• a non-volatile memory coupled to the processor and storing a program;
• wherein the processor executes the program stored on the non-volatile memory to:
• determine the measured pressure gradient for at least one fluid in a formation from a set of measured pressure data for a set of depth positions;
• perform a measured pressure gradient error analysis for each fluid using a selected confidence level for at least one of a depth and a pressure measurement for each fluid;
• and
• plot a confidence level boundary plot displaying the set of measured pressure data, the measured pressure gradient, and the outer boundaries of the measured pressure gradient error for each fluid.

A computer readable media storing instructions executable by a computer system, and, when executed, the instructions implement a method comprising:

• determining the measured pressure gradient for at least one fluid in a formation from a set of measured pressure data for a set of depth positions;
• performing a measured pressure gradient error analysis for each fluid using a selected confidence level for at least one of a depth and a pressure measurement for each fluid;
• and
• plotting a confidence level boundary plot displaying the set of measured pressure data, the measured pressure gradient, and the outer boundaries of the measured pressure gradient error for each fluid.