| 摘要 |
A wellbore tool for adapted for insertion into a wellbore extending into a hydrocarbon-containing formation, for fracturing said formation, comprising an elongate, substantially cylindrical tubular member. The tubular member has at a first end external thread means adapted for threadable connection to internal thread means disposed on an end of a wellbore piping member, and at an opposite end having internal thread means. At least a pair of longitudinally-spaced apart radially-outwardly protruding annular rib members are located on an exterior periphery of said tubular member, each of an outer diameter greater than an outer diameter of said wellbore piping member to which said tool is adapted to be threadably coupled. A method for fracturing a hydrocarbon formation using such wellbore tool is further disclosed. |
