| In this paper, a comprehensive study about the key technologies of extended reachwells. Its main contents include:1. Well suited for reservoir engineering studies to thedevelopment of extended reach wells. Conducted research to develop suited forextended reach wells of reservoir types discovery and development programs.2. Studyon the technology of extended reach wells drilling fluid. By using logging data,according to the different stratum selection design of drilling fluid system, adjustingdrilling fluid performance.3. Study on extended reach wells trajectory, according tothe site conditions and calculation of the wells trajectory of research and design, thewell trajectory design and meet a variety of field conditions.4. Hole cleaningtechnology: A Study on the influence factors of borehole cleaning, is developed tocalculate calculate model borehole cleaning minimum annular return velocity. Studyon cementing and completion technology: research and completion fluid system forreservoir protection in Cuba, Guanabo block seventh oil fields in the west.Through the above research and integrated technology in Guanabo block of largedisplacement horizontal well practice, formed a set of extended reach drilling system.Integrated extended reach wells drilling technology there search and summary,asChina’s onshore oil fields successful application of extended reach drilling technologyto provide the necessary basis and reference. |