Slimhole Conglomerate Horizontal Drilling Accelerate Technology Research

Over the past decade,with increasing costs of oil and gas production,and oil field project continued to expand and improve the level of drilling technology in remote areas,? 152mm slim hole drilling oil and gas exploration more obvious advantages,namely changing the well structure,narrow drill size and improve the efficiency of broken rock drill in deep gas reservoirs implementation conglomerate slimhole combines horizontal wells drilled exploratory wells,deep wells,slim hole wells,horizontal wells and difficulties related to technical characteristics.According to the geological characteristics Xujiaweizi,considering the cost of drilling,the drilling cycle,depth,position whipstocking naked eye length,completions,formation pore pressure gradient formation fracture pressure gradient drilling rock formations and other characteristics of each segment factors,according to the level of the casing,casing under deep borehole to determine the best ?152mm body structure ?342.9mm drill/?273.1mm casing + ?215.9mm drill/?177.8mm casing +?152.4mm drill/?114.3mm.? 152mm slimhole bit selection rely mainly on geological data related to forecasting and analysis,formation depth,lithology,rock drillability correspond and contrast ?118mm sidetrack drill using the law,the establishment of statistics,has been drilling with drill practical effect to measure,such as drill footage,bit life,average ROP units footage cost basis as the drilling bit selection.Comprehensive data through on-site and formed a contrast to the degree of wear Baisite M1365D PDC drill bit cone bit + Jianghan MD637HDY+Hughes MXDS55DX cone bit series.Selection and matching screw drill borehole major consideration size,design build slope size,media type drilling applications,application bottomhole formation temperature,the size of the displacement while drilling.Through the horizontal well trajectory described slimhole conglomerate established?152mm horizontal well drill string mechanics model,application gap element method friction torque of the drill string is analyzed to determine cp 152mm slimhole construction conglomerate horizontal well drilling assembly,application landmark software,based on the actual drilling BHA conducted friction/torque forecasts.By contrast can be described using the landmark calculated by the software and the measured friction friction comparison error is less than 10%,to meet the construction requirements.Meanwhile cp 152mm slimhole deep horizontal wells conglomerate threat analysis,and proposed technical measures related...