The Research Of Long Horizontal Section Horizontal Well Drilling Technology In Fan116 Block

The low permeability reservoir storage capacity in Shengli Oilfield has 10×108 tons, in which specifically permeability reservoir storage capacity occupies more than 1/3. Because the physical properties and dividing of the low permeability reservoir are not high, and the uniformity is very poor, therefore reservoir exploitation becomes a major technical problems.In order to explore development of effective means of such low permeability reservoir, this article selects the long horizontal wells in Shengli Oilfield segment eastern oilfields Daluhu Fan116 block and researches its drilling technology.Firstly, the paper describes the location and reservoir characteristics of Fan116 block,analyses the mechanism of oil accumulation and geological reservoir lithology of the block,and optimizes the deployment of horizontal wells. Secondly, Based on the principle of long horizontal section of the horizontal well design and drilling conditions of different difficulty analysis, and use a soft friction torque rod model mathematical model of the drill string, After modeling, to solve the axial force and the torque load of the drill string, Simulated orbital analysis before making the slope and the impact on the target displacement of the drill string friction torque. And optimize the design of the application Fan116-3HF well. For trajectory Fan116 block of horizontal well control technology research, Proposed horizontal wells in the block section vertical wells, horizontal trajectory by oblique segments and segment control points as well as some key control computing, Using FEWD geosteering drilling technology to improve the ability to control the trajectory, Preferably a PDC bit in the block, And describes techniques for the maintenance treatment of drilling mud of the block, The application of the technology over to the construction site of the Fan116-3HF, achieved good results.