THE APPLICATION OF SLOTTED LINER AND ECP SPECIAL COMPLETION TECHNOLOGY AT BOHAI BAY

This paper summarizes the successful application of slotted liner and ECP (external casing packer) special completion technology firstly used in the Well BZ26-2-2D at Bohai Bay. Two packers were used in the completion. No.1 packer was expanded by the completion fluid, whereas No.2 packer was expanded by the slurry. It’s first time to apply the slurry to expand the packer. The key characteristics of this technology are formation protection, operation safety, construction plan well-conceived and reasonable simple tool structure. The application of the technology provides a well completion method for the development of buried hill reservoir in Bobal Bay region, and gropes for and sum up the certain valuable experience for cementing and completion mechanism in the buried hill formation at Bobal Bay.