Horizontal Well Drilling Technology Around Narrow Density Safely And Quickly In Shenmu Area

Shenmu-shuangshan block is one of the mainly produced block in Changqing gas field,now the current level of well casing structure of this block is four open well structure,and for this reason,leading to ROP low,long drilling cycle,serious impact of the horizontal drilling speed ect.The project for the construction of the existing problems,such as the extension mudstone easily necking,Liujiagou Formation and the lower part of the upper strata easy to leakage Shiqianfeng group,the purpose of the horizontal section drilling mud containing layer sandwich and other technical problems,carried out a cross-sectional wellbore optimization research,PDC drill bit preferably research,sloughing vertical well section,discourage drilling technology research and Liujiagou,Shiqianfeng leak technology research group,the level of anti-sloughing drilling fluid technology research section.Simplified structure through the wellbore to optimize the pressure plugging technology research,the formation of some of the blocks fast horizontal well drilling technology security,completed the well structure optimized design,Liujiagou,leakproof Shiqianfeng group sloughing drilling horizontal section liquid and other research techniques.Form for some fast drilling technology.