Abstract: A downhole retrieving tool, in which a tubular member has a tubing string connector end and a conical retrieving dish on the tubular member spaced from and opening towards the tubing string connector end. Stabilizers are spaced around the tubular member at the tubing string connector end. A retrievable whipstock comprises a concave, with a recess formed in the concave between upper and lower conical walls. The upper side wall intersects the face of the concave to form an anchor point. A method for retrieving a downhole tool, such as a whipstock, in a well, in which a retrieving tool having a retrieving dish is lowered into a well, inserted into the recess to engage an anchor point, and removed from the well. Fluid may be injected through circumferentially spaced fluid passageways communicating with the bore of the tubular member to remove unwanted material from the recess.

Abstract: A through tubing gravel pack assembly which is capable of being run on a coiled tubing string inside existing tubing for repairing a preexisting gravel pack. The through tubing gravel pack system comprises a hydraulically releasable running tool and service assembly, a hydraulically set through tubing packer assembly and a crossover sleeve and sliding sleeve valve assembly. The gravel pack assembly is adapted to be shiftable between a circulating mode and a squeeze mode for conducting a circulating gravel pack and/or a squeeze gravel pack without the necessity of having to trip the assembly out of the borehole.

Abstract: A fluid nozzle for threaded insertion into a drill bit. The nozzle is equipped with a drive head that receives a socket-type torquing tool. The torque forces exerted by the tool compress the drive head, permitting larger torque forces to be exerted on the nozzle without breakage of the drive head that occurs where a tension force is produced in the drive area by the torquing tool. Use of a compressive drive structure permits the use of less material, which in turn permits a larger flow passage to be formed through the nozzle for a given nozzle size. The facets of the drive area may be inclined relative to the nozzle axis to limit the torque force applied by a drive tool. When the torque force exceeds a limit determined by the configuration and inclination of the facets, the tool is forced axially off of the drive area. This feature controls the amount of torque applied to the nozzle and prevents nozzle damage.

Abstract: An alternate-path, well screen made-up of joints and having a sleeve positioned between the ends of adjacent joints which acts as a manifold for fluidly-connecting the alternate-paths on one joint with the alternate-paths on an adjacent joint.