An experimental evaluation method of drilling fluid lost control efficiency considering loss types

There are serious drilling fluid loss problems in fractured reservoirs during and completion. Indoor evaluation of the lost control effect is an important basis for on-site plugging formula design, but there some evaluation, such as inability to evaluate specific types. Therefore, based on classification causes, this paper defines main factors efficiency different types puts forward a method recognizing The influence fracture module experimental steps was evaluated through laboratory experiments. Based analysis indoor field efficiency, best conditions were recommended, then, considering various established. This can comprehensively grade ability formula. Through verification Block K Tarim Basin, test results closer results, better, which guide leakage evaluation.