CEMENTATION PRODUCT AND USE FOR CEMENTING OIL WELLS OR THE LIKE

摘要

The invention concerns a cementation composition for oil wells or the like whereof the porosity is less than 50 and whereof the solid phase consists fo r 35 to 65 % (by volume) of hollow microspheres, for 20 to 45 % of Class G Portland cement and for 5 to 25 % of Class G Portland micro-cement. The invention is particularly useful for cementing conduit tubes in arctic regio ns or drill holes in deep water.