Development technologies and practice of undeveloped reserves in Shengli Oilfield

Shengli Oilfield has a large scale of undeveloped reserves， which is an important backup for the sustainable production of the oilfield. However， many years of development practice show that there are lots of problems in the overall development of these reserves， which restricts the economic development and production of the reservoir. In view of the characteristics of some reservoirs with low grade， difficult production， and poor development effect， the types and distribution characteristics of undeveloped reserves in Shengli Oilfield were systematically sorted out， and the main types of undeveloped reserves and key research objectives were defined. Based on the development practice in recent years in the reservoirs such as glutenites， beach bar sands， and deep low-permeability heavy oil， the paper analyzed three main technologies for undeveloped reserves， including large-scale fracturing of wells with high inclination in glutenite reservoirs， pressure flooding in low-permeability beach bar sand reservoirs，