FIELD: well drilling. SUBSTANCE: above-bit shock absorber has body with connection threads. Body is made in form of convex shell of rotation of flexible material. EFFECT: damping of vibrations excited by force interaction of cone bit teeth with bottom hole in course of well drilling to protect the drill string from vibrations. 1 dwg
申请公布号
RU94037849(A)
申请公布日期
1996.09.10
申请号
RU19940037849
申请日期
1994.10.10
申请人
AKTSIONERNOE OBSHCHESTVO OTKRYTOGO TIPA "SARATOVNEFTEGAZ"
