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Dissolvable downhole frac tool having a single slip

Inactive Publication Date: 2018-12-20
MAGNUM OIL TOOLS INT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a type of plug used in wells that can be left in the well after use, without needing to be milled or drilled out. These plugs are designed to degrade naturally in the well fluid, without causing any issues with fluid flow. The plugs are made of a combination of degradable polymer and metallic elements, which work together to speed up the degradation process. This design can save time and money in well completion and workover processes.

Problems solved by technology

Interventionless downhole plugs may save time and expense in well completion and workover processes, including fracing and / or acid completions.

Method used

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  • Dissolvable downhole frac tool having a single slip
  • Dissolvable downhole frac tool having a single slip
  • Dissolvable downhole frac tool having a single slip

Examples

Experimental program
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Embodiment Construction

[0019]FIG. 1 illustrates one embodiment of Applicant's downhole tool 10 with a number of novel features and functional advantages. Downhole tool 10 is intended to be used in completion of oil and gas wells and, in some embodiments, for isolating a zone to be fraced. Downhole tool 10 comprises a cylindrical, thin walled and short mandrel 12 that has a bore 32 therethrough for selectively allowing the passage, when in a set position of a fluid therethrough, as set forth in more detail below. Coupled to mandrel 12 is seen bottom shoe 14, which may be engaged, as by threads or other means, to the lower end of mandrel 12 and includes a bottom shoe bore 38 therethrough, bottom shoe bore 38 being in fluid communication with mandrel bore 32. Bottom shoe 14 may include walls defining bottom shoe seat 40 for receiving a spherical ball 30 (may be dropped in or run in with the tool), such as a frac ball, thereon. In an alternate embodiment, the mandrel 12 may include a ball seat 42 for receivin...

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PUM

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Abstract

A downhole plug for use in completion operations within the casing of an oil well is disclosed. The settable downhole tool has a mandrel, a wedge, a seal, load ring, ratchet ring, a bottom shoe, and a ball seat. In addition, the downhole tool contains only a single slip engaging the mandrel, the slip comprised of numerous panels with multiple buttons thereon. During setting of the downhole tool, the single slip engages the wedge and is forced outward to engage the casing so as to hold the downhole tool in place during subsequent operations, including, for example, fracing.

Description

[0001]This is a utility application that elms priority and the benefit of U.S. Provisional Application 62 / 519,350, filed Jun. 14, 2017.FIELD OF THE INVENTION[0002]Downhole tools, more specifically, downhole tools that are dissolvable in a downhole fluid, and / or are shorter in overall length than typical, and / or may have only a single slip of novel construction and dimensions.BACKGROUND OF THE INVENTION[0003]Downhole tools may be used in completion of oil and gas wells, in one example, for fracing operations by isolating the formations downhole to be treated as, for example, by fracing. These downhole tools may be interventionless, meaning they may be dissolvable in downhole fluids. Downhole fluids may be naturally occurring, or may be fluids added at the wellhead during completion, or fluids modified by adding chemicals at the wellhead to the natural downhole fluids or introduced fluids.[0004]Dimensionally, most downhole tools have an overall length of about 13″ to 32″ long and weig...

Claims

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Application Information

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IPC IPC(8): E21B33/128E21B33/129E21B29/02
CPCE21B33/1285E21B33/1292E21B29/02E21B33/128E21B33/134
Inventor FRAZIER, W. LYNN
Owner MAGNUM OIL TOOLS INT