Research On The Excellent And Fast Drilling Technology Of Long-extended Reach Well Of The Peripheral Oil-fields Of Daqing

The long-extended reach well generally means that the ratio of measuring depth to vertical depth(and the ratio of useful horizontal displacement to vertical depth)is greater than or equal to 2.The long-extended reach well synthesizes the most advanced drilling technology,which is of great economic value to the exploitation of the remaining oil in old oil fields,the development of beach and shallow oil fields.With the development of Daqing oilfield,the drilling market comes out more and more difficult well types,long-extended reach well,large slope wells will be more and more,drilling speed up,excellent drilling,is a prerequisite for the market.The research results of this paper have been applied in Taiping 34 block and Portugal331-1 block area of oil recovery plant.The drilling speed has been raised effectively.Because of the long horizontal displacement and the long length of the naked hole,a series of engineering problems will be brought about in construction.This paper mainly studies drilling fluid system,hole cleaning,excellent and fast drilling,and obtains some achievements.