MATRIX DRILL BITS WITH BACK RAKED CUTTING ELEMENTS
摘要
A matrix drill bit and method of manufacturing a matrix bit having back raked cutting elements is disclosed. In one aspect, a matrix drill bit for well drilling includes a matrix bit body that has a front area in a direction of drilling and two or more diamond impregnated cutting blades protruding from the front area of the matrix bit body. The cutting blades each have a front external surface protruding from the front area of the matrix bit body and present a plurality of back raked downhole interface surfaces in the direction of drilling. The downhole interface surfaces span a leading face and a trailing face where the leading face extends to a first height and the trailing face extends to a second height and the first height is greater than the second height.
申请公布号
WO2007107181(A2)
申请公布日期
2007.09.27
申请号
WO2006EP60834
申请日期
2006.03.17
申请人
HALLIBURTON ENERGY SERVICES, INC.;DA SILVA, NUNO;SILLEN, VALERIE;LUYCKX, NICOLAS