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dissolvable bridge plug

A technology of bridge plugs and components, applied in the field of dissolvable bridge plugs, can solve the problems of time-consuming and labor-intensive drilling of bridge plugs

Inactive Publication Date: 2016-06-08
PRAD RES & DEV LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, to avoid such risks, conventional bridge plugs often still require time-consuming and labor-intensive drilling for removal, especially in the case of horizontally positioned plugs

Method used

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Embodiment Construction

[0018] Embodiments are described with reference to specific downhole operations using bridge plugs for well isolation. For example, embodiments herein focus on perforation and fracturing applications. However, various applications can be used that utilize embodiments of dissolvable bridge plugs as detailed herein. For example, any number of temporary isolations (eg, for isolation clearance or other applications) may utilize the bridging plug implementations described below. Regardless, embodiments described herein include bridge plugs configured to be fixedly anchored in cased wells for high pressure applications. This may be followed by substantial dissolution of the metal-based disc of the plug to allow its more efficient removal.

[0019] now refer to figure 1 , which shows a side, partial cross-sectional view of an embodiment of a dissolvable bridge plug 100 . As described in further detail below, the bridge plug 100 is referred to as "dissolvable" in the sense that ce...

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Abstract

A dissolvable bridge plug configured with components for maintaining anchoring and structural integrity for high pressure applications. These components may substantially dissolve to allow for ease of plug removal following such applications. The plug may effectively provide isolation in a cased well for applications generating over about 8,000-10,000 psi. At the same time, by employment of a dissolve period for the noted components, such a plug may be drilled-out in less than about 30 minutes, even where disposed in a lateral leg of the well.

Description

[0001] Cross References to Related Applications [0002] This document claims priority to U.S. Patent Application Serial No. 12 / 855,503, filed August 12, 2010 and titled "Dissolvable Bridge Plug," which is claimed under 35 U.S.C. §120 and filed June 28, 2006 and titled A continuation-in-part of claim to US Patent Application Serial No. 11 / 427,233 for "Degradable Compositions, Apparatus Comprising Same, and Method of Use." US Patent Application Serial No. 11 / 427,233 follows on from US Provisional Patent Application Serial Nos. 60 / 771,627 and 60 / 746,097, filed February 9, 2006 and May 1, 2006, respectively. The disclosure of each of these applications is incorporated herein by reference in its entirety. technical field [0003] The described embodiments relate to a bridge plug configured for use in cased hole operations. More specifically, plug embodiments are described in which the metal-based anchoring and support components are soluble in the well environment, especially af...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/12
CPCE21B33/134
Inventor 杰克·斯坦弗里德比利·詹森约翰·弗莱明曼纽尔·P·玛雅
Owner PRAD RES & DEV LTD