method for determining an absolute uncertainty of at least one location in a well path, method for determining an absolute uncertainty in a second well path, and method for determining an absolute uncertainty of at least one location in a well path

摘要

method for determining an absolute uncertainty of at least one location in a well, method for determining an absolute uncertainty in a second well path, and method for determining an absolute uncertainty of at least one location in a well path a relative error model is used to calculate a relative uncertainty in the position of a first well in relation to a second well. this relative uncertainty can be calculated in real time during drilling and can be used to make subsequent directional decisions during drilling. in addition, an absolute uncertainty in the position of a first well can be obtained by combining an absolute uncertainty in the position of a second well with the relative uncertainty in the position of the first well in relation to the second well.