Development Theories and Methods of Fracture-Vug Carbonate Reservoirs

Fracture -Vug carbonate reservoirs are difficult to characterize and develop due to their complex storage mechanisms and fluid flow patterns of hydrocarbons. Problems such as a rapid decline in production rates, low recovery factors, and poor sweeping efficiency arise for such reservoirs around the world. As a result, few fracture-Vug carbonate reservoirs have been developed successfully in the world. The Ordovician reservoir in the Ta he oilfield of China is the largest fracture-Vug reservoir in the world, and has an estimated oil reserves of up to 3 billion tons. Development Theories and Methods of Fracture-Vug Carbonate Reservoirs explores the theories and methods for successful development of a fracture-Vug reservoir by presenting the developmental strategies used in the Tahe oilfield. Some of the theories and methods of developing the fracture-Vug reservoirs have been inspired by two national research projects in China:"Basic research on development of fracture-vug carbonate reservoirs" (2006-10) and "Basic research on production mechanism and oil recovery enhancement of fracture-vugcarbonate reservoirs• (2011-15) supported by the National Basic Research Program of China. These theories and methods have facilitated the successful development of the fracture-Vug reservoir in the Tahe oilfield, providing effective technologies and inspirations to developing similar reservoirs everywhere