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Title: Multi-gradient drilling method and system

Patent ·
OSTI ID:875097

A multi-gradient system for drilling a well bore from a surface location into a seabed includes an injector for injecting buoyant substantially incompressible articles into a column of drilling fluid associated with the well bore. Preferably, the substantially incompressible articles comprises hollow substantially spherical bodies.

Research Organization:
MAURER ENGINEERING INC
DOE Contract Number:
AC21-94MC31197
Assignee:
Maurer Technology Incorporated (Sugar Land, TX)
Patent Number(s):
US 6530437
OSTI ID:
875097
Country of Publication:
United States
Language:
English

References (2)

Application of Aerated-Fluid Drilling in Deepwater conference April 2013
Use of Hollow Glass Spheres for Underbalanced Drilling Fluids conference April 2013