The Study on Sand Consolidation Agent Formula System of H Block

Abstract

The cemented type between particles in H block is mainly pore-contact, which belongs to medium porosity, medium or low permeability reservoir, and the quality of oil belongs to thin oil. Since H block was put into production in 1988, the changes of formation pressure, erosion of water on formation and other reasons had caused sand production problem in H block. In order to reduce the disadvantages of sand production in oil and gas well and according to the analysis of sand production reasons in H block, this paper puts forward a kind of sand consolidating system that is suitable for H block. By indoor experiment, this paper optimizes the curing agent amount, thinner agent content, softener dosage, coupling agent and glass fiber content, also sand consolidating agent content. In addition, considering the two indicators of compressive strength and water permeability, this paper optimizes the composition of this sand consolidating agent, namely using epoxy resin as main agent; curing agent amount is 6.4%; softener dosage is 15%; thinner content is 22%; content of coupling agent is 2%; fiber dosage is 10%; appropriate injecting amount of sand consolidating agent is 1 pv.