Abstract: Rock strength is estimated during drilling using a rate of penetration model or a modified mechanical specific energy models. The rock strength estimate can be used in conducting further drilling, for example by a drilling system. Drilling parameters may be altered as a result of determining rock strength, for example to avoid undesirable trending fractures, such as extensive vertical fractures.
Type:
Grant
Filed:
October 1, 2013
Date of Patent:
October 9, 2018
Assignee:
Rocsol Technologies Inc.
Inventors:
Geir Hareland, Mauricio Jose Farinas Moya, Prasad Baloo Kerkar, Ernesto Rafael Fonseca Ocampos