Top entry sub arrangement
OwnerCharles M. Helms, Charles W. Bleifeldinventors
Life of this patent
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Abstract
A top entry sub (ES) includes a tubular member (TM) with a main body section (8) and an enlarged external diameter upper end portion (11). A single passage (15) extends through the main body section (8) and terminates in a pair of spaced passages (14) and (14a) that extend through the enlarged external diameter end portion (11), which passages terminate in a common upper surface on the top entry sub (ES) for receiving a well string and providing an entry into the top entry sub for members such as coiled tubing, snubbing members and cable.
Claims17
A top entry sub including:
- a tubular member;
- said tubular member having a main body section with a lower end and an enlarged external diameter upper end portion;
- an upper surface on said enlarged external diameter upper end portion;
- a lower surface on said lower end;
- a single longitudinal passage in said main body section extending through said tubular member lower end;
- and
- said single longitudinal passage terminating at its upper end in two spaced passages extending through said enlarged external diameter upper end portion and upper surface thereon.
A top entry sub including:
- a tubular member;
- said tubular member having an upper end;
- said tubular member having a lower end;
- a longitudinal passage extending in said tubular member and through said tubular member lower end;
- and
- said longitudinal passage terminating at two spaced inclined passages which extend through the upper end of said tubular member.
A method of inserting coiled tubing in a tubular well string through a top entry sub that has a longitudinal passage that extends through the the lower end of the top entry sub, which passage communicates at its upper end with at least two inclined passages that extend through the upper end of the top entry sub including the steps of:
- securing the top entry sub to connect its longitudinal passage with the tubular well string;
- and
- inserting the coiled tubing in one of the inclined passages in the upper end of the top entry sub and through the longitudinal passage into the well string.
Dependencies are inferred from the claim text.