Apparatus for drilling and completion of inaccessible wells

Claim 1

COMPLETION APPARATUS FOR WELLS LOCATED IN RELATIVELY INACCESSIBLE LOCATIONS, SUCH AS BENEATH THE SURFACE OF A BODY OF WATER, COMPRISING TUBULAR BODY MEANS AT THE UPPER END OF THE WELL HAVING PLURAL VERTICALLY SPACED HANGER SUPPORT MEANS THEREWITHIN, PLURAL PIPE HANGER MEANS EACH SUPPORTED WITHIN SAID TUBULAR BODY MEANS AT ONE OF SAID HANGER SUPPORT MEANS OF SAID BODY MEANS AND EACH SUPPORTING ONE OF PLURAL WELL PIPES EXTENDING CONCENTRICALLY BELOW SAID TUBULAR BODY MEANS INTO THE WELL, FIRST AND SECOND UPWARDLY EXTENDING CONCENTRIC TUBULAR ELEMENTS ABOVE SAID BODY MEANS, THE UPPERMOST OF SAID PLURAL PIPE HANGER MEANS INCLUDING ADDITIONAL HANGER SUPPORT MEANS, ADDITIONAL HANGER MEANS SUPPORTED AT SAID ADDITIONAL HANGER SUPPORT MEANS AND SUPPORTING AN ADDITIONAL WELL PIPE EXTENDING CONCENTRICALLY BELOW SAID TUBULAR BODY MEANS INTO THE WELL, SAID ADDITIONAL HANGER MEANS ALSO HAVING FIRST RELEASABLE CONNECTION MEANS CONNECTING SAID FIRST UPWARDLY EXTENDING TUBULAR ELEMENT THERETO, SECOND RELEASABLE CONNECTION MEANS MOUNTED ATOP SAID TUBULAR BODY MEANS AND CONNECTING SAID SECOND UPWARDLY EXTENDING TUBULAR ELEMENT THERETO, SAID FIRST AND SECOND TUBULAR ELEMENTS ALSO BEING RELEASABLE AT THEIR RESPECTIVE DESCRIBED CONNECTIONS, AND RESILIENT MEANS BIASING SAID SECOND TUBULAR ELEMENT DOWNWARD WITH RESPECT TO SAID FIRST TUBULAR ELEMENT WHILE THEIR RESPECTIVE CONNECTIONS ARE DISCONNECTED WHEREBY SAID SECOND CONNECTION MEANS CONNECTS WITH SAID SECOND TUBULAR ELEMENT BEFORE SAID FIRST CONNECTION MEANS CONNECTS WITH SAID FIRST TUBULAR ELEMENT WHEN SAME ARE BROUGHT TOGETHER FOR CONNECTION.