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Passive frac sleeve selection and operation by pressure signals

IP.com Disclosure Number: IPCOM000248442D
Publication Date: 2016-Nov-29
Document File: 1 page(s) / 8K

Publishing Venue

The IP.com Prior Art Database

Abstract

This system is an on-the-fly frac sleeve selection and operation by vaying high/low pressure signals. After the frac operation is completed a final pressure signal will open a second sleeve per tool that allows production through bead screen cartridges.

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Passive frac sleeve selection and operation by pressure signals

    This system is an on-the-fly frac sleeve selection and operation by vaying high/low pressure signals. After the frac operation is completed a final pressure signal will open a second sleeve per tool that allows production through bead screen cartridges.

    Think of it as a combination lock. This system uses varying high/low (binary) pressure signals to selectively open a frac sleeve with j-slots. Each tool uses j-slots as mechanical counters and combinations of high/low pressure j-slots will allow the certain sleeve to open and operate. Each sleeve also contains a screen sleeve using bead screen cartridges that is the last to open. The frac operation is completed and each sleeve then closes and locks against a ratchet. Once all zones are fraced a final pressure signal is used to open all screen sleeves with the differential pressure of the formation and port/atmospheric combination to open. The screen sleeve will also lock against a ratchet. Can be used with packers to create a complete system that just requires a separate initial signal to set all packers.