Fast drilling technology of three dimensional horizontal wells in Fuling Jiangdong block

Abstract:

In the secondstage of Fuling gas field development, the geological structure is more complex than that in the firststage, with the deep buried depth of the target layer and the varying dip angle over the horizontal section. These objective factors make drilling difficult and the drilling duration is generally extended. Jiaoye 91 platform is located in the southwest edge of Jiangdong Block, where the geological conditions are complex, and drilling is difficult. In this paper, the complex situation encountered in the drilling process of the first well JY912HF in the platform is analyzed, and the main reasons for the long drilling duration are analyzed. During the construction of the following two wells, technical measures, such as improving leak plugging measures, optimizing bits and PDM, optimizing the borehole trajectory, matching downhole tools, improving drilling fluid performances and using rotary steering tools, were adopted. Fine construction has been carried out to solve the problems of the first well, and good results have been achieved. The bit run and ROP have been greatly improved, and the drilling duration has been greatly shortened, providing the construction experience for drilling in the area.