APPLICATION OF HIGH QUALITY AND SPEEDINESS DRILLING TECHNOLOGY IN ANPENG ALKALI BEARING OILFIELD

Anpeng high alkali bearing oilfield has complex geologic structure and reservoir type,lesser drillability of rock.High alkali bearing formation influence badly drilling fluid and cement slurry,and lead to drilling speed lower the area,downhole complex instances are more and wellhole quality and cementing quality are cheesy.So match drilling technologies were developed,and form 5 match technologies,application of stratum nature build inclined law,drillability of stratum evaluating and bit optimizing design,drilling and waterpower parameters optimizing,anti-alkali drilling fluid system study,and anti-alkali cementing technologies study.Field operations show that the match technology can increase penetration rate by 70.98%,build well period reduce by 65.21%,downhole complexity and accident time reduce by 78.80%,cementing quality measure up rate increase by 124.47%,and gain better economic benefit.