Research on Drilling and Completion Fluid Technology for Protection of Oil-Gas Formations in Fushan Oilfield

Abstract:

Fushan oilfield is a typical condensate reservoir. The reservoir porosity is 10%～20%.The average reservoir permeability is 35×10-3μm2. It belongs to medium porosity and low permeability reservoir, and part being with low porosity and extra-low permeability. It is water sensitive and easy to collapse. By the test, XZD-Ⅱtemporary plugging agent was selected as shielding temporary plugging drilling and completion fluid to protect oil-gas formation with good effects.