Abstract: A system for chemical treatment of producing oil wells has automatically actuated valves operated by a control circuit. The control circuit causes the system to automatically switch the well from production to treatment status without shutting down. After a predetermined treatment period, wherein well fluids mixed with treatment chemical are recirculated throughout the well, the control circuit causes the system to change state and switch to production status. One embodiment of a means for pumping the treatment chemical into the well includes a continuous pump actuated by the mechanism of the well pump, and which includes two electrically actuated valves. The control circuit automatically operates the valves to cause treatment chemical to be injected into the well when desired, then changes the position of the valves so that the chemical which is continuously being pumped will return to the storage tank in a continuous stream.

Abstract: Apparatus and a method are disclosed for dispensing a plurality of articles, one at a time, at a filling zone into a plurality of containers so that when one of a series of containers is filled, the filling operation is automatically interrupted, the filled container is automatically moved from the filling zone, and an empty container positioned in the filling zone to be filled. The present invention employs a controllable gate for interrupting the dispensing of articles from a dispensing machine, a counter mechanism for counting the articles dispensed, a rotary table for carrying a plurality of containers past a dispensing chute on the dispensing machine, an apparatus for indexing the rotary table in response to the counting mechanism, and a second counting mechanism for counting the number of containers filled.