Conductor casing for offshore drilling and well completion

Claim 1

A CONDUCTOR CASING FOR CONNECTING A WELLHEAD ON THE OCEAN BOTTOM TO A VESSEL FLOATING ON THE OCEAN SURFACE SUBSTANTIALLY VERTICALLY ABOVE THE WELLHEAD COMPRISING: AN ELONGATED TUBULAR MEMBER CONTAINING A DRILLING FLUID DENSER THAN WATER, SAID MEMBER HAVING ITS LOWER END CONNECTED TO A FIXED WELLHEAD ADJACENT THE OCEAN FLOOR AND IS UPPER END CONNECTED TOA FLOATING VESSEL, MEANS NEAR THE LOWER END OF SAID MEMBER FOR PERMITTING UNIVERSAL ANGULAR MOVEMENT OF THE AXIS OF SAID MEMBER RELATIVE TO SAID WELLHEAD, MEANS NEAR THE UPPER END OF SAID MEMBER FOR PERMITTING UNIVERSAL ANGULAR MOVEMENT OF THE AXIS OF SAID MEMBER RELATIVE TO SAID FLOATING VESSEL, MEANS IN THE UPPER PORTION OF SAID MEMBER PERMITTING AXIAL ELONGATION AND CONTRACTION OF SAID MEMBER, MEANS FOR EXERTING AN UPWARD FORCE ON SAID MEMBER, A MASS OPERATIVELY CONNECTED TO SAID MEMBER ADJACENT ITS LOWER END FOR RESISTING SAID UPWARD FORCE, SAID MASS AND SAID UPWARD FORCE EXERTING MEANS BEING PROPORTIONED WITH RESPECT TO EACH OTHER AND SAID MEMBER SO THAT THE LONGITU-