Insert SRPs are lowered inside the tubing as an assembled unit with sucker rods. They are anchored in mechanical, cup or friction type seating nipples. Depending on the barrel type (thin/heavy wall, travelling/non-travelling) and seating nipple placement (top/bottom) these pumps have special designations: according to Russian standard GOST: NB1B and NB2B , according to API 11-AX: RHAM, RHBM, RWAF, RWBF, RHTFS, RHAC, RHBC. Insert pumps manufactured by ELKAM have nominal size from 1 1/16” up to 2 1/4” and can be customized according to the customer’s requirements.
Insert sucker rod pump is set in borehole on sucker rod string and fixed in tubing string with the help of seating assembly, which ensures leak-tightness.