Optimal-fast batch-drilling technology in Nanpu 1-5 templet

In order to speed up the development of Nanpu 1st structure, batch-drilling technology has been used in Nanpu 1-5 templet of Jidong oilfield. In the light of characteristics that the well-head spacing of Nanpu 1-5 templet is very small, an in-depth research and demonstration on arrangement and site selection of the well-head as well as the trajectory design were done which provided a guarantee to drilling. As a result, drilling speed had been increased. The average drilling cycle of the 1-5 well group was 16.72 days per well, which was reduced by 30% compared with single well drilling which provided a solution to the lack of offshore drilling platforms, furthermore, this technology provided a proposal for the efficient use of module rig on artificial island.