Halliburton Energy Services, Inc.

David Kulakofsky

Krishna M Ravi

Michael J Szymanski

Pedro Pulido

Raul Bonifacio

Octavio Araujo Morales

Ashok K Santra

Anthony M Badalamenti

Ronald Earl Sweatman

Richard F Vargo, Jr

William John Hunter

Alvaro Escorcia

Ronnie Faul

Steven C Owens

The invention provides a carbon dioxide-resistant hydraulic cement composition. The inventive composition comprises a Portland cement, Class C fly ash and water. The Class C fly ash is present in the composition in an amount in the range of from about 5% to less than about 30% by weight based on the total weight of the cementitious components in the composition. In another aspect, the invention provides a method of cementing in a carbon dioxide environment. In yet another aspect, the invention provides a method of enhancing the recovery of a hydrocarbon fluid from a subterranean formation.

Carbon dioxide-resistant Portland based cement composition

A method of cementing involves introducing a pipe string into a well bore such that an annulus is defined between the pipe string and a wall of the well bore, and introducing a cement composition into the annulus. The cement composition includes cement, water, and an auto-sealing component. An annular structure, coupled to the pipe string, comprises an expandable material.

Methods of integrating analysis, auto-sealing, and swellable-packer elements for a reliable annular seal

Foamed cement compositions comprising density reducing additives and methods of making and using the same are disclosed. In one embodiment, a method of cementing is disclosed. The method of cementing comprises preparing a base cement composition comprising a cement, a water, and a density reducing additive, wherein the base cement composition comprises a base density. The method further comprises introducing a gas to the base cement composition to provide a cement composition having a density less than the base density and allowing the cement composition to set.

Methods of cementing with lightweight cement composition

Methods for performing cementing operations in a subterranean zone under high temperature conditions include forming a cementing composition having a density of less than about 10.5 pounds per gallon, pumping the cementing composition into the subterranean zone by way of the well bore and allowing the cementing composition to set therein. The cementing composition includes calcium aluminate, water, and a lightweight additive having a specific gravity of less than about 0.70.

Methods for high temperature lightweight cementing

Compositions for performing cementing operations in a subterranean zone under high temperature conditions have a density of less than about 10.5 pounds per gallon, and include calcium aluminate, water, and a lightweight additive having a specific gravity of less than about 0.70.

Compositions for high temperature lightweight cementing

Methods of cementing with lightweight cement compositions

In accordance with a method of this invention, formation integrity problems are discovered, diagnosed and corrected in successively drilled subterranean well bore intervals. If one or more of well bore fluid outflows, formation fluid inflows or inadequate well bore pressure containment integrity are discovered in a drilled well bore interval, well logs are run and other relevant well bore data is collected in the drilled well bore interval and analyzed to provide a specific treatment using a specific pumpable sealing composition for sealing and increasing the pressure containment integrity of the well bore. Thereafter, the sealing composition is pumped into the drilled well bore interval whereby the well bore interval is sealed or the pressure containment integrity is increased, or both.

Methods of discovering and correcting subterranean formation integrity problems during drilling

A method is provided which, in an embodiment described herein, permits a location and/or displacement of a cementing plug to be determined during a cementing operation. In this embodiment, one or more pressure pulses are transmitted through displacement fluid being used to pump the plug through the casing string. The pressure pulses are reflected off of the plug and received by a pressure sensor. Information regarding the timing of the reflected pressure pulses may be used to determine the location and/or displacement of the plug.

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Katy, TX, United States of America

David Kulakofsky