then discharges the combination into the well application_number US 62068200 A description with reference to fig1 3 the preferred method and apparatus of the present invention will be described fig1 schematically represents the method of the present invention well 10 produces fluid oil gas water or mixture thereof through production line 12 flush pump 14 has suction end 16 in communication with production line 12 such that a portion of the production fluid or flush is siphoned off into pump 14 chemical pump 18 injects treatment chemicals into suction end 16 to mix with the flush the combination of the treatment chemicals and the flush are then discharged through discharge end 20 of pump 14 which is in communication with well 10 due to the additional volume of the flush siphoned from production line 12 the treatment chemicals will be able to reach the bottom of well 10 to treat downhole equipment and formation fig2 shows flush pump 14 installed on pump jack 22 flush pump 14 is preferably a type of rod pump which is known in the art flush pump 14 has rod 24 that is attached to walking beam 26 of pump jack 22 at top mount 27 as walking beam 26 travels the other end of rod 24 is reciprocated within pump housing 28 which is mounted to base 30 of pump jack 22 with reference to fig3 rod 24 terminates inside housing 28 with plunger 32 with mixing head 34 as plunger 32 reciprocates flush from production line 12 is drawn through inlet ball valve 36 and into suction end 16 also treatment chemicals from chemical pump 18 are drawn through valve 38 into suction end 16 the.