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1. WO1996038394 - CURABLE GYPSUM-CONTAINING COMPOSITION AND METHOD FOR STABILIZATION OF UNCONSOLIDATED CORE SAMPLES

Publication Number WO/1996/038394
Publication Date 05.12.1996
International Application No. PCT/NO1996/000116
International Filing Date 14.05.1996
Chapter 2 Demand Filed 09.12.1996
IPC
C04B 28/14 2006.01
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
28Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
14containing calcium sulfate cements
C04B 40/06 2006.01
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
40Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
06Inhibiting the setting, e.g. mortars of the deferred action type containing water in breakable containers
C09K 8/46 2006.01
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
8Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
42Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
46containing inorganic binders, e.g. Portland cement
E21B 25/08 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
25Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors
08Coating, freezing, consolidating cores; Recovering uncontaminated cores or cores at formation pressure
CPC
C04B 28/14
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
28Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
14containing calcium sulfate cements
C04B 40/0658
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
40Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
06Inhibiting the setting, e.g. mortars of the deferred action type containing water in breakable containers ; ; Inhibiting the action of active ingredients
0658Retarder inhibited mortars activated by the addition of accelerators or retarder-neutralising agents
C09K 8/46
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
8Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
42Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
46containing inorganic binders, e.g. Portland cement
E21B 25/08
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
25Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors
08Coating, freezing, consolidating cores
Applicants
  • RESLAB A/S [NO]/[NO] (AllExceptUS)
  • HJELMELAND, Odd [NO]/[NO] (UsOnly)
  • ARDÖ, Björn, Arild [NO]/[NO] (UsOnly)
Inventors
  • HJELMELAND, Odd
  • ARDÖ, Björn, Arild
Agents
  • CURO A/S
Priority Data
95212430.05.1995NO
Publication Language English (EN)
Filing Language Norvegian (NO)
Designated States
Title
(EN) CURABLE GYPSUM-CONTAINING COMPOSITION AND METHOD FOR STABILIZATION OF UNCONSOLIDATED CORE SAMPLES
(FR) COMPOSITION DURCISSABLE CONTENANT DU PLATRE ET PROCEDE DE STABILISATION DE CAROTTES-ECHANTILLONS NON CONSOLIDEES
Abstract
(EN)
A curable gypsum-based composition for the production of cured gypsum matrix, the composition comprising a two-component composition comprising: (a) a first component comprising calcined gypsum suspended in water, and a set retarding substance comprising (i) an organic acid containing at least two acid groups selected from the group consisting of carboxyl, sulphate, sulphonate, phosphate or phosphonate, said acid optionally also containing at least one hydroxy group per molecule; and/or (ii) inorganic anions selected from the group consisting of polyphosphate and polyborate, or mixtures thereof, and (b) a second component comprising a set accelerating substance comprising water-soluble salts of multivalent metal ions. The water soluble salts in component (b) forms stable precipitate or complexes with the acid in component (a). The component (b) may also comprise easily soluble salts of ammonium and/or cations from the first group of the periodic table of the elements, which will accelerate the hardening process.
(FR)
L'invention concerne une composition durcissable à base de plâtre utilisée pour produire une matrice durcie en plâtre. La composition comprend deux composants dont (a) un premier composant constitué de plâtre calciné en suspension dans de l'eau et une substance qui retarde le durcissement constituée de (i) un acide organique qui contient au moins deux groupes acides sélectionnés dans le groupe constitué de carboxyle, sulfate, sulfonate, phosphate ou phosphonate, cet acide pouvant le cas échéant contenir également au moins un groupe hydroxy par molécule; et/ou (ii) des anions inorganiques sélectionnés dans le groupe constitué de polyphosphate et de polyborate, ou de mélanges de ceux-ci; et (b) un deuxième composant qui comprend une substance qui accélère le durcissement et qui contient des sels solubles dans l'eau d'ions métalliques polyvalents. Les sels solubles dans l'eau qui font partie du composant (b) forment des produits précipités ou des complexes stables avec l'acide du composant (a). Le composant (b) peut également comprendre des sels aisément solubles d'ammonium et/ou des cations du premier groupe de la table périodique des éléments, qui accélèrent le processus de durcissement.
Also published as
NO19975398
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