Schlumberger Technology Corporation

Elena Pershikova

Olivier Porcherie

Hafida Achtal

Yamina Boubeguira

Slaheddine Kefi

Alexander Alexandrovich Burukhin

Zinaida Usova

Anatoly Matveev

Joseph Eamonn O'Neill

Nigel Evans

Eamonn O'Neill

Benedicte Ayache-Zusatz

Jose Rafael Silva Ferrero

Gaetan Rimmele

Organic compounds containing at least one nitrogen atom are particularly suitable as retarders for geopolymeric systems employed as well cements. Preferred compounds include aminated polymers, amine phosphonates, quaternary ammonium compounds and tertiary amines. The geopolymeric compositions are suitable for primary cementing and remedial cementing operations. The preferred temperature range within which the retarders operate is between about 20&#xb0; C. and 120&#xb0; C.

Compositions and methods for well cementing

The invention concerns the use of a carbohydrate-based compound as a mixing aid and dispersing agent in a pumpable geopolymeric suspension for oil and/or gas industry applications, said suspension further comprising an aluminosilicate source, a carrier fluid, and an activator, and method for placing such a suspension in a borehole. In particular, the suspension according to the invention is used for well primary cementing operations and/or remedial applications.

Pumpable geopolymers comprising a mixing aid and dispersing agent

A carbohydrate-based compound is used as a setting accelerator in a pumpable geopolymeric suspension for oil and/or gas industry applications. The suspension further comprises an aluminosilicate source, a carrier fluid, and an activator. The suspensions may be placed in a subterranean well and used for well primary cementing operations and/or remedial applications.

Pumpable geopolymers comprising a setting accelerator

This invention relates to the oil and gas industry and can be used to prevent fracture closure by pumping special particulates (proppant) into the fracture after reservoir hydraulic fracturing. According to the invention, the proppant is particulates of sintered ceramic material which are shaped ideal spheres. The use of this type of proppant may increase the well production by 25%.

Proppant and method for higher production of a well

The invention relates to the area of oil and gas production (especially, to the production in which the propping technique is used for the stimulation of a well) and can be used in the development of a composition and a method of production of propping agents (proppant), as well as a method of application of these propping agents. A new type of proppant, proppant production method and use of the proppant are based on allowing the production of proppant having an apparent density of 2.5 to 4.0 g/cm, as well as a high mechanical strength and a high chemical durability. A proppant contains granules made of the sintered feedstock, wherein the charge mixture containing at least one of the following materials&#x2014;silicon carbide, boron carbide, titanium carbide, silicon nitride, titanium nitride, boron nitride, silicon oxynitrides, SIALON-type compounds, was used as the feedstock.

Proppant, proppant production method and use of proppant

The invention concerns the use of a fluid loss control additive in a pumpable geopolymeric suspension for oil and/or gas industry applications, said suspension further comprising an aluminosilicate source, a carrier fluid, and an activator, and method of providing such a suspension in a borehole. In particular, the suspension according to the invention is used for well primary cementing operations and/or remedial applications.

Pumpable geopolymers comprising a fluid-loss agent

This invention refers to the oil and gas production industry and can be employed to enhance the productivity of wells by preventing the closure of fractures through application of proppant granular material during the formation fracturing operation.

Proppant, a method for production thereof and formation hydraulic fracturing method using the produced proppant

A low-density ceramic proppant is formed from a light aggregate of a natural mineral and a ceramic binding material in the form of a proppant granule. The light aggregate expands in volume when burnt so that the density of the aggregate is changed. A method of preparing a proppant material is carried out by pre-crushing and pre-mixing of raw components. This is followed by their granulation into proppant granules, drying and screening of the granules to a selected size. The raw components include at least a ceramic binding material and a light aggregate of a natural mineral that, when burnt, expands in volume so that the specific volume of the aggregate is changed. The burning of the light aggregate may be accomplished before or after the aggregate is mixed with the binding material.

Low-density ceramic proppant and its production method

Elimination of sand entrainment and a significant increase in hydrodynamic permeability of the sand pack in an area near the wellbore are achieved through the use of a sand and/or proppant, and proppant material mixture at the final stage of the fracture filling process, where individual particles of the proppant material have at least one shape of plates, lattices, hollow bars, inside-hollow tubes with a closed impermeable cavity or cavities, toroidal particles, elongated particles in the form of ovals, pellets or plates, cylinders with a closed impermeable cavity or cavities, or blocks with a comb multi-channel structure with throughout channels of the ellipse or polygon cross-section.

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Moscow, Russia

Elena Pershikova