Neck clamp for electrical submersible pump and method of installation

A well pump assembly, comprising:

• a plurality of modules, including a pump and a motor, secured together, each of the modules having a housing, at least one of the modules having a neck of reduced diameter relative to the housing of said at least one of the modules;
• a clamp secured around the neck, the clamp having an axis and an outer surface surrounding the axis;
• a recess on the outer surface;
• at least one accessory member secured into the recess and protruding radially outward from the clamp;
• wherein
• the recess defines a plurality of selective angular position in a plane perpendicular to the axis for securing the accessory member;
• the neck protrudes from a first one of the modules and extends to a second one of the modules, and the assembly further comprises:
• a collar carried and retained on the neck and in threaded engagement with the second one of the modules, thereby securing the first one of the modules to the second one of the modules, the collar having an axial dimension less than a length of the neck;
• and
• the clamp is secured around the neck, filling a space between the collar and the first one of the modules when the collar is in threaded engagement with the second one of the modules, thereby preventing the collar from disengaging from the second one of the modules.

A well pump assembly, comprising:

• a plurality of modules, including a pump and a motor, secured together, each of the modules having a housing, at least one of the modules having a neck of reduced diameter relative to the housing of said at least one of the modules;
• a clamp secured around the neck, the clamp having an axis and an outer surface surrounding the axis;
• a dovetail groove extending around and within the outer surface of the clamp;
• an accessory member protruding radially outward from the outer surface of the clamp and having an inner portion located in the groove;
• a threaded fastener that secures the accessory member to the clamp;
• and
• wherein the accessory member is slidable along the groove to a selected orientation prior to tightening the fastener.

A method of installing a submersible pump assembly in a well, the pump assembly having a plurality of modules, including a pump and a motor, secured together, each of the modules having a housing, at least one of the modules having a neck of reduced diameter relative to the housing of said at least one of the modules, the method comprising:

• providing a clamp with an axis, an outer surface surrounding the axis, and an elongated recess extending a selected circumferential distance around the outer surface;
• positioning at least one accessory member on the outer surface, the accessory member having a circumferential extent less than 360 degrees, inserting an inner portion of the accessory member inward into the recess, and sliding the accessory member along the recess to a selected angular position relative to the axis;
• securing the accessory member in the recess at the selected angular position;
• and
• securing the clamp around the neck.