Saudi Arabian Oil Company

Newpark Drilling Fluids LLC

Arthur Herman Hale

Ashok K Santra

Ahmed Said Abdelaziz Amer

Graham Hitchcock

Peter James Boul

Christelle Y Mbuncha

A method for remediating fractures in a cement structure including heating the cement structure to a temperature at or above the melting temperature of the eutectic metal alloy particles to allow the particles to flow in liquid state into the fractures in the cement structure until the heat source is discontinued, allowing the particles to cool and solidify.

Eutectic metal alloy-containing cement and methods of use thereof

A fluid composition including a mixed metal oxide viscosifier, a clay viscosifier, and solid eutectic metal alloy particles. A method including pumping a drilling fluid downhole in a wellbore. The drilling fluid including water, a mixed metal oxide viscosifier, a clay viscosifier, and solid eutectic metal alloy particles. The method further including allowing the drilling fluid to reach a target zone with elevated permeability and forming a filter cake containing solid eutectic metal alloy particles in the target zone. The method including heating the filter cake to a temperature greater than the melting temperature of the eutectic metal alloy particles, allowing the particles to melt and become liquid eutectic metal alloy particles. The method including discontinuing heating and allowing the filter cake to cool to a temperature lower than the melting temperature of the solid eutectic metal alloy particles to produce a strengthened filter cake.

Eutectic metal alloy in drilling fluids and methods of use thereof

A downhole operation in a wellbore having a lost circulation zone that includes plugging the lost circulation zone with a material that solidifies, and extracting a core from the solidified material to form a bore through the solidified material. The core is extracted with a monolithic coring bit, which retains the core within for removing the core from the wellbore. An example of a material that solidifies are eutectic alloys, such as an alloy of bismuth and tin. Such eutectic alloys have two properties that make them attractive for use in downhole applications. Namely, these alloys expand upon solidifying (rather than shrinking like other metals), and they have relatively low melting temperatures (138° C. to 170° C.).

Wellbore operations system and method

A method repairing lost circulation conditions during drilling operations, including deploying a deployment tool to a lost circulation zone, charging the deployment tool with eutectic metal alloy pellets, activating a heater to melt the pellets through the deployment tool and out of the crucible onto the targeted zone to form a patch, removing the deployment tool, and milling away excess cooled and cured eutectic metal alloy.

Lost circulation eutectoid alloy downhole deployment tool

A self-healing cement structure may be used for repairing defects. An example method of using such a cement structure includes: providing a cement structure in a wellbore, wherein the cement structure includes: a cement and elastomer particles at 1% by weight of the cement (bwoc) to 25% bwoc; applying heat to the cement structure to heat at least a portion of the elastomer particles above a melting point of an elastomer of the elastomer particles to cause at least a portion of the elastomer to melt and infiltrate into a defect in the cement structure; and allowing the elastomer to cool below the melting point of the elastomer to yield a repaired cement structure.

Repairing wellbore cement structures and related compositions

A eutectic composite may be utilized in oil and gas servicing. For example, a method of making such a composite may include: crosslinking a mixture including a polymer, a metaphosphate salt, and a plurality of eutectic alloy particles to yield a eutectic composite; and producing a plurality of eutectic composite particles from the eutectic composite. Furthermore, an example composition may include: a cement; water; and a plurality of eutectic composite particles including eutectic alloy particles dispersed in a polymer crosslinked with a metaphosphate salt.

Methods and compositions of low specific gravity eutectic composite particles

A eutectic metal alloy is placed through a coiled tubing into a wellbore formed in a subterranean formation. The eutectic metal alloy includes a mixture of multiple metals. The eutectic metal alloy has a melting temperature that is less than a melting temperature of each individual metal of the multiple metals making up the eutectic metal alloy. The eutectic metal alloy is heated to a temperature equal to or greater than the melting temperature of the eutectic metal alloy to liquefy the eutectic metal alloy. The liquefied eutectic metal alloy is flowed from the wellbore and into the subterranean formation, thereby exposing the liquefied eutectic metal alloy to a specified downhole temperature within the subterranean formation and causing the liquefied eutectic metal alloy to solidify to form a seal. The seal prevents fluid from flowing from the wellbore and into the subterranean formation.

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Houston, TX, United States of America

Arthur Herman Hale