Published August 2012
Free piston installation development engineering
V.J. AbdullayevIn structures currently in use we observe frequent piston trapping within tubing, bumper sub and piston breakage, early retreat of the piston from lower bumper sub, high number of cycles, gas losses, acceleration of piston rise depending on gas ratio, formation of impacts and other complications. In consideration of shortcomings of free piston operation a new free piston design was developed, which has a number of technological advantages with regard to stimulation of various layer-well system parameters for operating in flush, uninterrupted gaslift and gaslift wells, lifting automatically at the expense of produced oil flow energy and descending under its own weight, effectively preventing paraffin deposits on pipe walls, also all technical documentation have been prepared.
