Wellbore tripping advisor

A system for tripping a tool string in a wellbore;

• the system comprising:
• a tool string deployed in a wellbore;
• a processor configured to:
• receive contextual data including wellbore data, tool string data, and drilling fluid data;
• compute downhole drilling fluid pressures at multiple tool string velocities and accelerations using the received contextual data and a wellbore hydraulics model;
• generate an equivalent circulation density (ECD) contour along a two-dimensional acceleration and velocity parameter space from the computed downhole drilling fluid pressures;
• and
• evaluate the ECD contour with a formation fracture pressure to generate a maximum velocity for tripping the tool string, wherein the evaluate the ECD contour further comprises:
• obtain the formation fracture pressure;
• apply a safety buffer to the obtained formation fracture pressure to obtain upper and lower fracture pressures;
• determine upper and lower fracture pressure contours;
• and
• determine a maximum tripping in velocity and a minimum tripping in velocity from the upper and lower fracture pressure contours;
• and
• a trip advisor board display configured to display the maximum tripping velocity;
• wherein
• the system trips the tool string in the wellbore at a velocity based on the determined maximum tripping in velocity.

A method for tripping a tool string in a wellbore, the method comprising:

• obtaining contextual data including wellbore data, tool string data, and drilling fluid data;
• computing downhole drilling fluid pressures at multiple tool string velocities and accelerations using the obtained contextual data and a wellbore hydraulics model;
• generating an equivalent circulation density (ECD) contour along a two-dimensional acceleration and velocity parameter space from the computed downhole drilling fluid pressures;
• evaluating the ECD contour with a formation fracture pressure to generate a maximum tripping velocity and a minimum tripping velocity, wherein the evaluating the ECD contour further comprises:
• obtaining the formation fracture pressure;
• applying a safety buffer to the obtained formation fracture pressure to obtain upper and lower fracture pressures;
• determining upper and lower fracture pressure contours;
• and
• determining a maximum tripping in velocity and a minimum tripping in velocity from the upper and lower fracture pressure contours;
• and
• tripping the tool string in the wellbore at a velocity between the determined minimum tripping in velocity and the determined maximum tripping in velocity.