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Methods and systems of treating a wellbore

A wellbore and wellbore technology, applied in earthwork drilling, wellbore flushing, wellbore/well components, etc., can solve problems such as hydrocarbon production obstruction

Inactive Publication Date: 2011-02-09
M I DRILLING FLUIDS U K LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, although filter cake formation and the use of fluid loss balls are necessary for drilling and completion operations, if the rock formation remains clogged with obstructions, the obstructions will be hydrocarbon production or other sources from Significant obstruction of fluids within the well

Method used

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  • Methods and systems of treating a wellbore
  • Methods and systems of treating a wellbore
  • Methods and systems of treating a wellbore

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Embodiment Construction

[0018] Generally, the disclosed embodiments of the invention relate to the use of electrolytic tools downhole. In one aspect, the disclosed embodiments relate to methods of treating a wellbore comprising: disposing at least one electrolysis tool in a desired portion of the wellbore, applying an electric charge to the existing wellbore fluid, and in situ by electrolyzing the wellbore fluid components Produces oxidants. In another aspect, the presently disclosed embodiments relate to methods of decomposing a filter cake formed in a wellbore, the method comprising generating an oxidizing agent in situ by electrolysis of wellbore fluid components present in the wellbore, and allowing the oxidizing agent to degrade the filter cake composition point. In yet another aspect, the disclosed embodiments relate to systems for decomposing a filter cake formed on the surface of a wellbore, the system comprising a wellbore with the filter cake formed thereon, a fluid supply for supplying an...

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PUM

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Abstract

Embodiments disclosed herein relate to methods of treating a wellbore (101) including emplacing at least one electrolytic tool (50) in a desired section of the wellbore, applying an electric charge to wellbore fluids present in the desired section of the wellbore, and generating oxidants in situ by electrolyzing components of the wellbore fluids.

Description

technical field [0001] The disclosed embodiments of the present invention generally relate to methods and systems for treating a wellbore, and more particularly to methods and systems for removing filtercakes formed in a wellbore. Background technique [0002] Various hydrocarbons (oil, natural gas, etc.) are typically obtained from subsurface geological formations (ie, "reservoirs") by drilling wells that penetrate oil and gas reservoirs. In order to "produce" hydrocarbons, that is to say move hydrocarbons from the formation to the wellbore (and eventually to the surface), there must be a sufficient unimpeded flow path from the formation to the wellbore. A key factor affecting production efficiency is the permeability of the geological formation along the flow path that the hydrocarbons must travel to reach the wellbore. Sometimes, geological formation rock has a naturally low permeability; sometimes, the permeability is reduced during operation, for example, during drilli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B21/00E21B37/00
CPCE21B37/00E21B21/00E21B21/08
Inventor 大卫·安东尼·巴拉德安迪·波普尔斯通
Owner M I DRILLING FLUIDS U K LTD