Washing Mode Selection And Optimization Of Hainan-3 Fault Block

Crude oil for Hainan 3 fault blocks in thin oil,a land bank and three beach platform of 126 wells in Guan Qu deployment,oil wells within the block diagonally large oil properties of the block with two low-high three characteristics,namely low density,low viscosity,high wax content,gum,high asphaltene content and high freezing point,pumping wells require regular wax job,using the drainage problems and pollution formation of long conventional method of hot wax cleared.In theory,the formation damage is infinite,however,the measures to increase production is limited,to the economic development of efficient,low-permeability oil field,the implementation of anti-wax method is very important,according to our oil production capacity,water cut,water sensitivity and formation leakage characteristics such as production capacity,due to the well-specific,refined oil paraffin management of different wells develop different wax removal program,developed for the prevention of chemical anti-wax,wash well with the self-energy hot wash cycle mainly to conventional water flushing,high temperature wash,wash temporary plugging wells,foam wash well supplemented by a variety of ways simultaneously paraffin measures.The whole block paraffin management with pertinence,adaptability good,and to meet the needs of all Wax wells.Classification from the well washing point of view,as long as the liquid in contact with the reservoir into the well,even if its better compatibility with the formation,but also inevitably produce a certain degree of oil contamination.In order to reduce damage to the reservoir,to achieve the best heat cleaning effect,the Hainan 3 fault block oil wells divided into normal,low stripper wells,severe leakage wells,water relations sensitive wells,wells containing high,the scene through the washing method of exploration wells and optimization,in order to the average oil flushing cycle extended 23d,wash drain the fluid shortening of 1.2d,greatly improving the efficiency of oil well washing and achieved good economic benefit.