System and method for performing an adaptive drilling operation

A method for performing an adaptive drilling operation at a wellsite, comprising:

• providing an integrated well optimization unit, comprising:
• a transceiver operatively connected to a controller for communication therewith;
• a base model unit for generating a base model from pre-drilling data;
• an overburden model unit for generating an overburden posterior model based on the base model and wellsite data received during overburden drilling;
• and
• a reservoir model unit for generating a reservoir posterior model based on the base model, the overburden posterior model and wellsite data received during reservoir drilling;
• constructing the base model;
• constructing the overburden posterior model during overburden drilling;
• constructing the reservoir posterior model during reservoir drilling;
• integrating the base model, the overburden posterior model and the reservoir posterior model by passing data therebetween;
• and
• modifying a well plan based on the integrated models.

A method for performing an adaptive drilling operation at a wellsite, comprising:

• obtaining data prior to drilling;
• constructing a base model with a base model unit from data obtained prior to drilling;
• constructing an overburden posterior model with an overburden model unit using the base model and wellsite data received during overburden drilling;
• constructing a reservoir posterior model with a reservoir model unit using the overburden posterior model and the data obtained from reservoir drilling;
• and
• updating drilling operation based on the models.

A system for performing an adaptive drilling operation at a wellsite, comprising:

• an oil rig having a downhole drilling tool for advancing into the Earth to form a wellbore;
• at least one monitoring tool for obtaining data regarding the wellsite;
• a well optimization unit comprising:
• a base model unit for constructing a base model prior to drilling;
• an overburden model unit for constructing an overburden posterior model using the base model and data obtained while drilling in an overburden;
• a reservoir model unit for constructing a reservoir posterior model using the base model, the overburden posterior model and data obtained while drilling in a reservoir;
• and
• a drilling trajectory unit for determining an initial trajectory based on the base model and modifying the drilling trajectory by integrating information from the overburden posterior model with data from the base model.