Wellhead for providing structure when utilizing a well pumping system

A wellhead for use with a surface mounted pumping unit operating a rod string extending to a downhole pump in a well comprising:

• a wellhead body having a first upper body portion and a second lower body portion, the body having a vertical bore extending the length of the body for a rod string operating through the body, the body having a first securing means at the upper end thereof for connection of a rod string operator to the body and a second securing means at a lower end thereof for securing the body to a casing flange of a well;
• means defining a blind bore formed in the upper body section extending transverse to and intersecting the bore through the body;
• a rod string support rod in the blind bore of the upper body section moveable between a rod string hanger and lock position and a release position in the blind bore, the support rod having an open ended recess shaped to allow the support rod to move around the rod string the recess having a lower recess portion sized to fit around the rod string below a coupling flange and a larger upper recess portion sized to fit around the rod string coupling flange, the support rod having a flange support surface between a first recess portion and a second recess portion for engagement by a flange surface on the coupling flange of the rod string whereby the support rod functions as a hanger for the rod string when the support rod is coupled with the rod string, the support rod further having vertical flange surfaces on opposite sides of the upper recess portion extending from the end of the support rod to the recess portion side, locking flanges being spaced apart less than the diameter of the coupling flange on the rod string so that when the rod string coupling flange is lowered into the upper recess portion of the support rod the support rod is not disengageable from the rod string when moved transverse to the rod string;
• an operating screw secured in the upper body section coupled with the support rod for moving the support rod between a rod string hanger and lock position and a release position;
• a tubular hydraulically operable seal in the upper body section around the bore below the support rod to seal with a rod string through the body in the bore and a port in the upper body section leading to the hydraulic seal for hydraulic operation of the seal;
• blowout preventer ram assemblies in the lower body section for closing off flow through the bore;
• and
• means defining a flow outlet from the bore through the lower body section above the blowout preventer.