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Fullbore Flapper Lock Open

IP.com Disclosure Number: IPCOM000237976D
Publication Date: 2014-Jul-23
Document File: 2 page(s) / 280K

Publishing Venue

The IP.com Prior Art Database

Abstract

Described below in Figure 1 is a tool that will allow the deposit of a can style lock extending the entire length of flow tube and flapper house to prevent flapper from closing after an unsuccessful attempt to close an immovable flowtube or partially open flapper. The tool would work in the same matter as any existing flapper lock open tool unit, but would release a longer locking ring that would have the ability to extend from the bottom of the flapper housing to the top of the flowtube. It would be held in place by the upsets by the bottom sub and nipple adapter. The advantage of having a lock ring covering the flapper and flowtube is an ability to assist in keeping a permanet lock open, during which the flowtube could not be retracted with the assist of a closure assist tool. This feature would allow a lock ring to be deployed with ability to keep the flapper locked open even if the flowtube retracts randomly in the future. It would also assist in locking open a partially open flapper with the flowtube partially retracted exposing part of the flapper that would hinder any future wireline work or ability to deposit a lock ring with current flapper lock open tools.

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Fullbore Flapper Lock Open

Described below in Figure 1 is a tool that will allow the deposit of a can style lock extending the entire length of flow tube and flapper house to prevent flapper from closing after an unsuccessful attempt to close an immovable flowtube or partially open flapper.

The tool would work in the same matter as any existing flapper lock open tool unit, but would release a longer locking ring that would have the ability to extend from the bottom of the flapper housing to the top of the flowtube. It would be held in place by the upsets by the bottom sub and nipple adapter. The advantage of having a lock ring covering the flapper and flowtube is an ability to assist in keeping a permanet lock open, during which the flowtube could not be retracted with the assist of a closure assist tool. This feature would allow a lock ring to be deployed with ability to keep the flapper locked open even if the flowtube retracts randomly in the future.

It would also assist in locking open a partially open flapper with the flowtube partially retracted exposing part of the flapper that would hinder any future wireline work or ability to deposit a lock ring with current flapper lock open tools.

Figure 1.