Polymer Plugs For Well Control

摘要

Systems, apparatus, and methods for controlling a well blowout comprising: a flow control device such as a blowout preventer on a wellbore; a control fluid aperture fluidly connected with the wellbore for introducing a control fluid and/or a plug-forming agent such as a polymer, monomer, resinous, and/or crosslinkable material, through a control fluid aperture and into the primary throughbore while wellbore blowout fluid flows through the wellbore; and optionally, a weighted fluid aperture positioned in the wellbore conduit below the control fluid aperture for introducing a weighted fluid or another fluid or plug-forming agent into the wellbore.

主权项

1. A method of performing a wellbore intervention operation to reduce an uncontrolled flow of wellbore blowout fluid from a subterranean wellbore, the method comprising:
providing a flow control device, the flow control device engaged proximate a top end of a wellbore conduit that includes a wellbore throughbore, the flow control device including a primary throughbore coaxially aligned with and comprising a portion of the wellbore throughbore; providing a control fluid aperture proximate the top end of the wellbore conduit, the control fluid aperture being fluidly connected with the primary throughbore; providing a weighted fluid aperture in the wellbore throughbore at an upstream location in the wellbore throughbore with respect to the control fluid aperture and with respect to the direction of wellbore blowout fluid flow through the wellbore throughbore; introducing a control fluid through the control fluid aperture and into the wellbore throughbore while the wellbore blowout fluid flows from the subterranean formation through the wellbore throughbore at a wellbore blowout fluid flow rate, whereby the control fluid comprises a plug-forming agent comprising at least one of a polymerizable monomer and a polymer; and at least one of polymerizing and crosslinking the plug-forming agent within the wellbore throughbore to create a barrier to flow of the wellbore blowout fluid through the wellbore throughbore.