Halliburton Energy Services, Inc.

Shell International Exploration & Production B.v.

Jip Van Eijden

Diederik W Van Batenburg

Larry Steven Eoff

Eldon Dwyann Dalrymple

Jan Gonsveld

Fred Arkestiejn

A sealant composition for servicing a wellbore comprising at least one gel system, a leak off prevention material and water.

Sealant composition comprising a gel system and a reduced amount of cement for a permeable zone downhole

A method of servicing a wellbore, comprising preparing a sealant composition comprising a crosslinkable material, a crosslinking agent, a fluid loss control additive, and water, placing the sealant composition in a permeable zone in the wellbore, and allowing the sealant composition to set. A method of servicing a wellbore, comprising preparing a sealant composition by combining a crosslinkable material, a crosslinking agent, a fluid loss control additive, water, and a cement, wherein an amount of the cement is reduced to an effective amount to increase a gel time of the sealant composition to greater than or equal to about 4 hours when the sealant composition is exposed to ambient temperatures in the wellbore, placing the sealant composition in a permeable zone in the wellbore, and allowing the sealant composition to gel.

Methods of plugging a permeable zone downhole using a sealant composition comprising a crosslinkable material and a reduced amount of cement

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Rijswijk, Netherlands

Jip Van Eijden