The Application of FLO-PRO Solids-free Drilling Fluid in Horizontal Wells in Jidong Oilfield.

A solids-free drilling fluid,FLO-PRO,was used in drilling the horizontal reservoir section in Jidong Oilfield in an effort to protect the reservoir from being damaged.FLO-PRO is a weak-gel drilling fluid specially designed for reservoir drilling in horizontal wells.This paper discusses the technological features and field application of this fluid.FLO-PRO has been used in four onshore blocks in Jidong and the application showed that this fluid had stable performance and rheology.Good cutting carrying made it suitable for horizontal well drilling.Furthermore,FLO-PRO is environmentally friendly.