Wellbore pipe trip guidance and statistical information processing method
AssigneeSchlumberger Technology Corporation
InventorsGinger Hildebrand, Chunling Gu Coffman, John Christian Luppens
Life of this patent
Estimating the term…
Abstract
A method for optimizing wellbore pipe tripping operation includes entering into a computer parameters related to a maximum safe pipe movement speed within the wellbore along at least one selected depth interval along the wellbore. A maximum safe pipe movement speed is calculated. An actual pipe movement speed is measured along the at least one selected depth interval. In the computer, a display is generated of the measured pipe movement speed along with the maximum safe pipe movement speed over the at least one selected depth interval.
Claims34
A method for wellbore pipe tripping, comprising:
- calculating a first pipe movement speed at which a predetermined level of swab and surge conditions is predicted to occur in a wellbore based on a set of entered parameters;
- calculating a second pipe movement speed at which a predetermined level of shock and vibration is predicted to occur in the wellbore based on the set of parameters, wherein the first and second pipe movement speeds are linear speeds;
- calculating a maximum safe pipe movement speed along at least one selected depth interval in the wellbore, wherein the maximum safe pipe movement speed is a lesser of the first pipe movement speed and the second pipe movement speed;
- determining a safe pipe movement speed range having an upper end speed and a lower end speed based at least partially on the maximum safe pipe movement speed, wherein the upper end speed is less than or equal to the maximum safe pipe movement speed;
- measuring an actual pipe movement speed along the at least one selected depth interval;
- determining whether the actual pipe movement speed is within the safe pipe movement speed range over the at least one selected depth interval;
- and
- generating a display of the actual pipe movement speed along with the safe pipe movement speed range over the at least one selected depth interval.
A system for wellbore pipe tripping, comprising:
- a computer configured to:
- calculate a first pipe movement speed at which a predetermined level of swab and surge conditions is predicted to occur in a wellbore based on a set of entered parameters;
- calculate a second pipe movement speed at which a predetermined level of shock and vibration is predicted to occur in the wellbore based on the set of parameters, wherein the first and second pipe movement speeds are linear speeds;
- calculate a maximum safe pipe movement speed along at least one selected depth interval in the wellbore, wherein the maximum safe pipe movement speed is a lesser of the first pipe movement speed and the second pipe movement speed;
- determine a safe pipe movement speed range having an upper end speed and a lower end speed based at least partially on the maximum safe pipe movement speed, wherein the upper end speed is less than or equal to the maximum safe pipe movement speed;
- and
- a sensor for measuring an actual pipe movement speed in the wellbore, wherein the computer is configured to determine whether the actual pipe movement speed is within the safe pipe movement range over the at least one selected depth interval and to generate a display of the actual pipe movement speed along with the safe pipe movement speed range over the at least one selected depth interval.
Dependencies are inferred from the claim text.