PRODUCTION OPTIMIZATION OF FLUMPING AND SANDY WELL USING TUNGSTEN MATERIAL IN BALL & SEAT OF SUCKER ROD PUMP IN WELL P-335 PERTAMINA EP ASSET 1 RANTAU FIELD

Abstrak

Rantau Field has applied full scale waterflood on the Z-600 layer since 2011. Over time the VRR (Voidage Replacement Ratio) for the Z600 layer especially for D1 block has reached the value of ± 2. This causes the monitor wells experiencing sand problem and flumping condition (there is a flow through the annulus when it is produced by artificial lift). At the time of flumping, standing valve or traveling valve cannot close properly as it gets large enough pressure. Whereas when the well experiences sand problem, the ball on the standing or traveling valve is easily eroded and blocked by the produced sand. This paper presents ball and seat material replacement for standing valve (STV) and traveling valve (TV) by using a material that is heavier and harder than stainless stee that is commonly used. The replacement of ball and seat material on the standing valve and traveling valve expected to overcome both of these problems and could optimize the lifetime of the well and also the production.