Research Progress on Reservoir Protection Technology of Water Based Drilling Fluid
The performance of drilling fluid reservoir protection is crucial to the subsequent productivity of oil and gas resources.This paper summarized the main types of reservoir damage and the key functions of reservoir protection drilling fluid.The main damage of drilling fluid to the reservoir is divided into solid phase pollution,polymer adsorption and blocking,hydration expansion of reservoir clay,which may be dispersed or transported due to the components in the drilling fluid,and compatibility damage of drilling fluid filtrate and formation water.Reservoir protection drilling fluid is roughly divided into strong plugging low filtration drilling fluid,strong inhibition low damage water-based drilling fluid,low solid/no solid polymer drilling fluid system,and biodegradable no solid drilling fluid developed on the no solid polymer drilling fluid system.It has achieved good reservoir protection effect in field application and provided technical support for field reservoir protection.
water-based drilling fluidplugging and loss reduction performanceinhibition performanceno solid phasedegradable
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NSTL
万方数据
维普
