| 摘要 |
CEMENTING METHOD AND ARRANGEMENT An operating string (O) is provided for conducting cementing operations in a well bore. The operating string (O) is shown sealably and releasably connected with a liner (L) and extends through upper liner wiper means (45) and terminates in overlapping relationship to lower liner wiper means (26), both of which wiper means (26 and 45) are releasably secured to the operating string (O) with the lower liner wiper means (26) releasably secured below the upper liner wiper means (45) so that its bore (28a) originates adjacent and extends away from the lower end of the upper liner wiper means (45). The operating string (O) includes positioning means (H) to hang the liner (L) on the well bore casing (C), and means (145, 146 and 148) to rotate and reciprocate the liner (L) before hanging it and/or to rotate the liner (L) during and after cementing. The hanger means (H) includes rows (90a, 91a') of cone segments (16a, 17a) and rows (18, 19) of slip segments (18a, 19a) with sleeve (S') supporting the cone segments (16a, 17a) with sleeve (S") supporting the slip segments (18a, 19a) with at least one sleeve movable longitudinally for simultaneously setting all hangers on the casing (C). |
