Drilling Technolog Study On Horizontal Wells In Sulige Oilfield

Now, the investment in oil and gas exploration and development is increasing around the world, Horizontal wells has become the important technology support for efficiently developing oil and gas field, and the number of horizontal Wells is also rapidly increased. Now in china, we have perfect system of horizontal well drilling and wide application. Based on the analysis of domestic horizontal wells techniques, the bottleneck for horizontal wells technology development are discussed, the paper can provide basis for scientific decision, and help formulating the horizontal well techniques developmental strategies.Sulige gas field is a typical low pressure, low permeability, low abundance, low production, large-sized lithologic gas field with strong heterogeneity, poor economic benefits of vertical development. To improve the development effect, in Sulige gas field the horizontal well technology overall development by The Great Wall drilling company, rely on special skill to implement brand engineering, realize the goal of less wells and more profits, increase effects, increase the single well recovery. The results show that, the horizontal well techniques provide favorable reference for the development mode conversion of low permeable lithologic reservoir.The article through the research on the technique of horizontal drilling In Sulige Oilfield, The optimizing well trajectory and drill string assembly have achieved and PDC bit personalized design and applications have increased. And the research has strengthened the engineering accident and complex situations effectively prevention, expanded steering drilling technology of horizontal wells.The research of the horizontal well technology for the formation development of technical difficulties, improving the speed and shortening the drilling cycle, reducing drilling costs and speeding up the process of exploration and development of oil and gas resources, It is of great significant with the theoretical and practical values and with wide application prospect.