| 摘要 |
CASING WINDOW ASSEMBLY A casing window assembly (500) comprises: a tubular casing sleeve (502) having an inside diameter, an outside diameter and an opening between the inside diameter (504) and the outside diameter (506) forming a casing window; a mandrel (508) having an upper end and a lower end, at least one of the upper end of the mandrel and the lower end of the mandrel including an expandable stop and orienting-key (512); and an orienting member (514) secured within the casing sleeve below the casing window, the orienting member including a plurality of guiding elements (516) separated by a plurality of slots (518), the plurality of slots including an orienting slot that directs the mandrel to a lateral position that is substantially the same as a lateral position of the casing window and that permits the mandrel to be lowered to a depth that is substantially the same as a depth of the casing window. |
