The Nonreleasing Spear is used to retrieve elements of arrangements during repairing and emergency operations in the well using coiled tubing units.
The Nonreleasing Spear consists of body, guide, collet sleeve and spring. There is fishing thread with thrust profile at the external surface of collet sleeve. Connection thread is made at the top of guide.
The body is attached to guide by pipe thread. The Nonreleasing Spear does not have a watercourse, to provide connection with annular space there is an aperture in the upper sub.
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