E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/27 (2006.01) C09K 8/80 (2006.01) C09K 8/92 (2006.01) E21B 37/06 (2006.01) E21B 41/02 (2006.01) E21B 43/267 (2006.01)
Patent
CA 2213698
Corrosion, scale-formation, or other deleterious processes are inhibited in an oil well by providing within the oil well (10) elements comprising an insoluble porous inorganic material in which is absorbed a well treatment chemical. The material may be in the form of particles or beads, for example porous ceramic spheres impregnated with an inhibitor material. Such particles may be injected as proppant particles into the formation through which the well extends, during a fracturing treatment. Alternatively such particles may be packed as a filter bed (26) in a filter (20) comprising two spaced tubular screens (24) between which the filter bed (26) is located. The inhibitor material gradually dissolves in the well fluids during operation, and may for example inhibit corrosion and/or scale-formation.
On prévient la corrosion et la formation de dépôts et autres processus de détérioration dans un puits de pétrole (10) en y plaçant des éléments faits d'un matériau poreux non organique insoluble ayant absorbé un produit chimique de traitement de puits. Le matériau peut se présenter sous forme de particules ou de perles et notamment sons forme de sphères céramiques poreuses imprégnées du produit de traitement. Lesdites particules peuvent être injectées comme agent de soutènement dans la formation où est formé le puits lors d'un traitement de fracturation. Les particules peuvent, selon une variante, servir de lit filtrant (26) formé dans un filtre (20) comportant deux cribles tubulaires (24) entre lesquels se trouve le lit filtrant (26). Le matériau inhibiteur se dissout progressivement dans les fluides circulant dans le puits pendant le forage, et peut, par exemple, inhiber la corrosion et/ou la formation de dépôts.
Bourne Hugh Malcolm
Read Peter Arne
Accentus Plc
Aea Technology Plc
Gowling Lafleur Henderson Llp
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