Patent ID: 8893777

Claim:
A chemical deployment plunger for use in an oil or gas well, the chemical deployment plunger comprising: a reservoir body having a top and a bottom, wherein the reservoir body comprises: includes an internal chemical reservoir; and a plurality of ejection ports extending through the reservoir body through the bottom of the reservoir body; a neck attached to the top of the reservoir body; and a plunger movably connected to the bottom of the reservoir body, wherein the plunger includes: a base that is external to the reservoir body; a stem connected to the base; wherein the stem passes through the bottom of the reservoir body; a piston connected to the stem, wherein the piston is internal to the reservoir body; and a ball stop positioned within the stem, wherein the ball stop includes: a spring channel extending through the stem in a transverse direction; a spring located within the spring channel; a ball secured to a first end of the spring, wherein the ball extends from the spring channel beyond the outer surface of the stem; and a set screw connected to the second end of the spring, wherein the manipulation of the set screw adjusts the extent of force exerted by the spring onto the ball.