| 摘要 |
PCT No. PCT/AU96/00227 Sec. 371 Date Dec. 2, 1996 Sec. 102(e) Date Dec. 2, 1996 PCT Filed Apr. 19, 1996A stabilizer tool (15) for a drill string (10) has a circular body (16) with recesses (17) containing projecting pad assemblies (18) arranged in a spaced helical configuration, each pad assembly (18) having at least one projecting wear block (20) maintained in abutment with an undercut recess surface by a wedge block (21) the outer wear surface (30) being of harder material than the remainder of the blocks (20, 21).
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