METHOD FOR CHEMICAL TREATMENT OF A SUBSURFACE WELLBORE

摘要

A method for injecting treatment chemical into a well includes selecting times at which to operate a chemical dispenser to inject a selected amount of treatment chemical into a well. At each selected time whether a wellbore pump is operating is determined. If the pump is operating the selected amount of treatment chemical is dispensed into the well. If the pump is not operating, no chemical is dispensed and a counter is incremented. At each subsequent selected time, the determining whether the well pump is operating is repeated. When a subsequent selected time coincides with a time at which the well pump is determined to be operating, the chemical dispenser is operated to inject a product of the number in the counter plus one, and the selected amount of treatment chemical into the well.

主权项

1. A method for injecting treatment chemical into a well, comprising:
selecting times at which to operate a chemical dispenser to inject a selected amount of treatment chemical into a well; at each selected time, determining whether a wellbore pump is operating; if the pump is operating, dispensing the selected amount of treatment chemical into the well if the pump is not operating, no treatment chemical is dispensed and a counter is incremented; at each subsequent selected time, repeating the determining whether the well pump is operating; and when a subsequent selected time coincides with a time at which the well pump is determined to be operating, operating the chemical dispenser to inject a product of the number in the counter plus one, and the selected amount of treatment chemical into the well.