Research and Application of Key Technologies for Complex Formation Drilling in Shengli Beach Shallow Sea
The beach shallow sea area of Shengli oilfield is rich in oil and gas resources,but the production declines fast in the old area,the exploration and development are gradually shifted to marginal and deep layers,and the problems such as great difficulty in preventing collision of dense well pattern,slow rate of penetration in deep hard formation,frequent occurrence of complex situations,easy collapse of oil shale formation,and high re-quirements for fractured reservoir protection and cementing quality are confronted in the course of drilling.In order to effectively solve these problems,a combination of theoretical research,specialized research and integrated appli-cation was used to form key technologies such as magnetic ranging active anti-collision technology for dense well groups,fast penetration technology for complex buried-hill formations,multiple plugging drilling fluid technology for oil shale and high strength constant low density cement slurry technology.These technologies were applied in more than 200 wells,forming a standard excellent and fast drilling and completion operation mode in key areas,ef-fectively ensuring the operation safety of dense well groups,improving the rate of penetration in buried-hill forma-tions,and reducing complex limitation period.The conclusions provide technical support for the efficient explora-tion and development of oil and gas resources in beach shallow sea.
beach shallow seadense well groupburied-hill formationoil shalecementing requirements
NETL
NSTL
万方数据
维普
