Stuffing box isolation apparatus and methods of using

Abstract

A stuffing box isolation apparatus and method for use with a stuffing box at a wellhead. The stuffing apparatus includes an anchor component that secures the apparatus within the stuffing box, when inserted into an open bore of a stuffing box. The apparatus further includes a sealing element that is expandable to sealingly engage an inner surface of the stuffing box. The expansion of the sealing element effectively seals the open bore of the stuffing box, preventing release of wellbore fluids and / or back-flow of the produced fluids.

Description

FIELD OF THE INVENTION[0001]One or more embodiments relate to, for example, an isolation apparatus and for insertion into a stuffing box and a method of installing the isolation apparatus into the stuffing box.BACKGROUND[0002]A stuffing box is an assembly used to house a gland seal, which prevents release of fluids between sliding or turning parts of machine elements. For example, a stuffing box and polish rod (or sucker rod) combination may be used to maintain an adequate liquid seal at the surface of a reciprocating piston pumping unit installed in an oil well.[0003]If the polish rod of a pumping unit fails (breaks), the stuffing box is left open possibly creating a situation where wellbore fluids may be released and / or back flow of the produced fluids from the flow line and gathering lines may occur. Oftentimes, individuals may use wooden handles or pipe pieces to close off the open stuffing box. Otherwise, wellbore fluid release or backflow may occur unless a flow line valve is ...

AI Technical Summary

Benefits of technology

This patent describes an isolation apparatus that can be inserted into the open bore of a stuffing box at a well head. The apparatus includes a central rod with an anchor component to secure it in place and a sealing element that expands when compressed to seal the open diameter of the stuffing box. The sealing element is designed to seal the open bore of the stuffing box while still allowing for movement of the apparatus within the stuffing box. This invention provides an effective and reliable way to isolate the stuffing box while still allowing for operational flexibility.

Problems solved by technology

If the polish rod of a pumping unit fails (breaks), the stuffing box is left open possibly creating a situation where wellbore fluids may be released and / or back flow of the produced fluids from the flow line and gathering lines may occur.

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