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Rotationally Aligning Sleeve

IP.com Disclosure Number: IPCOM000247328D
Publication Date: 2016-Aug-24
Document File: 1 page(s) / 121K

Publishing Venue

The IP.com Prior Art Database

Abstract

By utilizing a rotating sleeve compared to a conventional sliding sleeve a frac valve is able to gain cross section and pressure ratings. This valve uses a rotational sliding sleeve to isolate windows on a housing. As the drawings show, a shifting tool engages a latch and is able to manipulate the valve into an open or closed state like conventional sliding sleeves. The difference being that the shifting latch has lugs that engage a cam profile that is integral to the rotational sleeve. As the shifting sleeve is pulled upwards the sleeve can orient from an open state to a closed state. A secondary sleeve prevent the shifting sleeve from rotating as it is shifted up. If desired the closed sleeve can be opened by passing a shifting tool through the valve which interfaces with the latch and cams the sleeve back open. As it is drawn, the rotational sleeve has bonded rubber surrounding the windows of the rotational sliding sleeve. Once the valve has been rotated closed the bonded rubber will isolate any communication between the tubing and formation.

The cam profile that is currently drawn as being integral to the rotational sleeve could be placed on the shifting latch. Also a shifting tool is not necessarily required to shifting the valve from a closed to open state or vise versa. A ball could land on the sleeve and shift it between states. Alternately one or several balls could be dropped and cause the valve to actuate open and closed as desired. That being said a shifting latch is not require for the valve, a ball seat of one or varying sizes could be used to actuate the sleeve open and closed. As drawn helical profiles are included on the shifting latch to orient a rental tool to the sliding sleeve. Depending on the orientation of the completion, no orientation grooves are require, or they could be drawn similar to that of an auto-entry shoe consisting of one large helical boss. As the model is drawn there are 6 windows, this could vary down to 1 or more windows. As the model is drawn this valve permits or blocks flow in a radial path. It could be configured to block flow in a annular path. The anti-rotation sleeve does not necessarily need to be part of the tool. The housing could have internal milled grooves that would key in directly to the shifting latch. Also as it is drawn the shifting latch has dogs or keys that can be placed on the OD to interface with the anti-rotation sleeve and rotational sleeve. These could be milled directly onto the sleeve. The valve could be rotated by a work string to an open and closed state. The rotational sleeve does not necessarily have to have a bonded or molded seal. An o-ring or something that is able to restrict flow could be used in its place.

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Rotationally Aligning Sleeve

Abstract of the Invention:

By utilizing a rotating sleeve compared to a conventional sliding sleeve a frac valve is able to gain cross section and pressure ratings.

This valve uses a rotational sliding sleeve to isolate windows on a housing. As the drawings show, a shifting tool engages a latch and is able to manipulate the valve into an open or closed state like conventional sliding sleeves. The difference being that the shifting latch has lugs that engage a cam profile that is integral to the rotational sleeve. As the shifting sleeve is pulled upwards the sleeve can orient from an open state to a closed state. A secondary sleeve prevent the shifting sleeve from rotating as it is shifted up. If desired the closed sleeve can be opened by passing a shifting tool through the valve which interfaces with the latch and cams the sleeve back open. As it is drawn, the rotational sleeve has bonded rubber surrounding the windows of the rotational sliding sleeve. Once the valve has been rotated closed the bonded rubber will isolate any communication between the tubing and formation.

The cam profile that is currently drawn as being integral to the rotational sleeve could be placed on the shifting latch. Also a shifting tool is not necessarily required to shifting the valve from a closed to open state or vise versa. A ball could land on the sleeve and shift it between states. Alternately one or several balls could be dropped and cause the valve to actuate ope...