Patent ID: 7810574

Claim:
An apparatus for raising and lowering a submersible pump in a well where the pump is run on a length of flexible tubing, the apparatus comprising: a portable base frame transportable from one well location to another, the portable base frame being supported in a horizontal plane with respect to a surrounding support surface; a pivot frame mounted on the portable base frame for pivoting movement in a plane generally parallel to the plane of the base frame; a pair of oppositely arranged support arms, each of which is pivotally mounted at an inner extent at a pivot point on the pivot frame and having an opposite outer extent, and wherein each support arm has an extension portion which is telescopically mounted with respect to the outer extent of each of the support arms for extension and retraction with respect to the support arms; a cylindrical take up reel having opposing sides separated by a central region for accumulating the flexible tubing, each of the opposing sides of the cylindrical take up reel being supported on the portable base frame by connection to the extension portion of each of the respective support arms; a primary pivot mechanism having a first extent pivotally attached to the pivot frame and having a second extent pivotally attached to a respective one of the support arms whereby actuation of the primary pivot mechanism serves to pivot the support arm and, in turn, the cylindrical take up reel between a collapsed position on the base frame and an extended, upright position; a secondary pivot mechanism having a first extent pivotally attached to the base frame and a second extent attached to the pivot frame for pivoting the pivot frame in an arcuate path in a plane generally parallel to the horizontal plane of the pivot frame, whereby the position of the cylindrical drum can be accurately centered with respect to a vertical axis of a well bore to be accessed for raising and lowering the submersible pump into the well bore.