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(12) Demande de brevet: (11) CA 2897777
(54) Titre français: MATERIAUX A MEMOIRE DE FORME A TG VARIABLE POUR DISPOSITIFS DE FORAGE DE PUITS
(54) Titre anglais: VARIABLE TG SHAPE MEMORY MATERIALS FOR WELLBORE DEVICES
(51) Classification internationale des brevets (CIB):
  • E21B 33/10 (2006.01)
  • C08J 3/00 (2006.01)
  • C08L 101/12 (2006.01)
  • E21B 43/08 (2006.01)
  • C08L 75/04 (2006.01)
(72) Inventeurs (Pays):
  • CARREJO, NICHOLAS (Etats-Unis d'Amérique)
  • JOHNSON, MICHAEL H. (Etats-Unis d'Amérique)
(73) Titulaires (Pays):
  • BAKER HUGHES INCORPORATED (Etats-Unis d'Amérique)
(71) Demandeurs (Pays):
  • BAKER HUGHES INCORPORATED (Etats-Unis d'Amérique)
(74) Agent: SIM & MCBURNEY
(45) Délivré:
(86) Date de dépôt PCT: 2014-01-13
(87) Date de publication PCT: 2014-07-31
Requête d’examen: 2015-07-09
(30) Licence disponible: S.O.
(30) Langue des documents déposés: Anglais

(30) Données de priorité de la demande:
Numéro de la demande Pays Date
13/750,468 Etats-Unis d'Amérique 2013-01-25

Abrégé français

La présente invention concerne des dispositifs de forages de puits pour l'utilisation dans la filtration, l'isolation de forage de puits, la commande production, la gestion de cycle de vie et la construction de forage de puits. Lesdits dispositifs de forages de puits peuvent comprendre au moins des premier et second matériaux à mémoire de forme qui possèdent chacun une position géométrique modifiée et qui possèdent chacun une position géométrique d'origine. Chaque matériau à mémoire de forme peut être maintenu dans la position de pénétration géométrique modifiée à une température inférieure à la température de transition vitreuse (Tg), où les Tg et/ou les changements d'inclinaison respectifs des premier et second matériaux à mémoire de forme sont différents. Facultativement, les matériaux à mémoire de forme peuvent être des polymères réticulés, les polymères réticulés possédant des rapports de réticulation différents l'un de l'autre. Une fois que le dispositif de forage de puits est en place en fond de puits et les premier et second matériaux à mémoire de forme sont soumis à des températures supérieures à leurs Tg, les matériaux se déploieront jusqu'à des positions géométriques récupérées à ou proche de leurs positions géométriques d'origines pour réaliser leur filtration, isolation, commande ou autre fonction. Ces déploiements peuvent se produire à des instants ou des taux différents.


Abrégé anglais

Wellbore devices for use in filtration, wellbore isolation, production control, lifecycle management and wellbore construction may include at least a first and a second shape-memory material each having an altered geometric position and each an original geometric position. Each shape-memory material may be held in the altered geometric run-in position at a temperature below glass transition temperature (Tg), where the Tgs and/or the respective slope changes of the first and second shape-memory materials are different. Option¬ ally the shape-memory materials may be crosslinked polymers where the crosslinked polymers have different crosslinking ratios from one another. Once the wellbore device is in place downhole and the first and second shape- memory materials are subjected to temperatures above their Tgs, the materials will deploy to recovered geometric positions at or near their original geometric positions to perform their filtration, isolation, control or other function. These deployments may occur at different times or rates.


Note : Les revendications sont présentées dans la langue officielle dans laquelle elles ont été soumises.

23
CLAIMS
What is claimed is:
1. A wellbore device comprising: at least two shape-memory materials:
a first shape-memory material comprising a cross-linked polymer having
a first crosslinking ratio, where the first shape-memory material
has an altered geometric position and an original geometric
position, where the first shape-memory material is maintained in
the altered geometric position at a temperature below a first onset
glass transition temperature, and where the shape-memory
material expands from its altered geometric position to its
recovered geometric position when it is heated to a temperature
above the first onset glass transition temperature, where the first
shape-memory material has a first slope change during a first
transition state from a first glass state to a first rubber state; and
a second shape-memory material comprising a cross-linked polymer
having a second crosslinking ratio different from the first
crosslinking ratio, where the second shape-memory material has
an altered geometric position and an original geometric position,
where the shape-memory material is maintained in the altered
geometric position at a temperature below a second onset glass
transition temperature, and where the shape-memory material
recovers from its altered geometric position to its recovered
geometric position when it is heated to a temperature above the
second onset glass transition temperature, where the second
shape-memory material has a second slope change during a
second transition state from a second glass state to a second
rubber state; and
where the first shape-memory material and the second shape-memory
material are further different by a parameter selected from the
group consisting of:

24
the first onset glass transition temperature is different from
the second onset glass transition temperature,
the first slope change is different from the second slope
change, and
both.
2. The wellbore device of claim 1, wherein the first and second shape-
memory materials each comprise a polyurethane.
3. The wellbore device of claim 2, where the ratios of polyol to
polyisocyanate in the polyurethanes of the first and second shape-memory
materials are different.
4. The wellbore device of claim 1 or 2 where the first shape-memory
material and the second shape-memory material are positioned on a billet
having a length in a configuration selected from the group consisting of:
concentric layers, where one of the shape-memory materials at least
partially overlaps the other shape-memory material;
side-by-side each other along at least a portion of the length of the billet;
and
combinations thereof.
5. A method of manufacturing a wellbore device, the method comprising,
(a) placing in any order or simultaneously:
a first shape-memory material on a billet in an original geometric
position where the first shape-memory material has a first
onset glass transition temperature and a first slope change
during a first transition state from a first glass state to a first
rubber state, the first shape-memory material comprising a
cross-linked polymer having a first crosslinking ratio;
a second shape-memory material on the billet in an original
geometric position where the second shape-memory

25
material has a second onset glass transition temperature
and a second slope change during a second transition
state from a second glass state to a second rubber state,
the second shape-memory material comprising a cross-
linked polymer having a second crosslinking ratio different
from the first crosslinking ratio;
(b) altering the original geometric shapes of the first and second
shape-memory materials at a temperature at or above both the
first and second onset T g to change the original geometric
positions of the first and second polyurethane materials
respectively; and
(c) lowering the temperature of the first and second shape-memory
materials to a temperature below the first and second onset T g S,
respectively, where the first and second shape-memory materials
each maintain their respective altered geometric positions;
where the first shape-memory material and the second shape-memory material
are further different by a parameter selected from the group consisting of:
the first onset glass transition temperature being different from the
second onset glass transition temperature,
the first slope change being different from the second slope change, and
both.
6. The method of claim 5, wherein the first and second shape-memory
materials each comprise a polyurethane.
7. The method of claim 6 where the ratios of polyol to polyisocyanate in
the
polyurethanes of the first and second shape-memory materials are different.
8. The method of claim 5 or 6 where the billet has a length, and where the
first shape-memory material and the second shape-memory material have a
configuration selected from the group consisting of:

26
concentric layers, where one of the shape-memory materials at least
partially overlaps the other shape-memory material;
side-by-side each other along at least a portion of the length of the billet;
and
combinations thereof.
9. A method of manufacturing a wellbore device, the method comprising:
(a) mixing a polymer with a crosslinker at a first crosslinker / polymer
ratio to form a first crosslinked polymer having a first original geometric
position
and having a first onset glass transition temperature Tg,
(b) mixing the polymer with the crosslinker at a second crosslinker /
polymer ratio to form a second crosslinked polymer having a second original
geometric position and having a second onset glass transition temperature T g,

where the first onset T g and the second onset T g are different;
(c) altering the geometric shapes of the first and second crosslinked
polymers at a temperature above both the first and second onset T g to change
the geometric shapes of the first and second crosslinked polymers
respectively;
and
(d) lowering the temperature of the first and second crosslinked
polymers to a temperature below the first and second onset T g s,
respectively,
where the first and second crosslinked polymers each maintain their respective

altered geometry.
10. The method of claim 9 further comprising introducing the first
crosslinked
polymer and the second crosslinked polymer onto a cylindrical billet.
11. The method of claim 10 where the cylindrical billet has a length, and
where the first crosslinked polymer and the second crosslinked polymer have a
configuration selected from the group consisting of:
concentric layers, where one of the polyurethane materials at least
partially overlaps the other polyurethane material;

27
side-by-side each other along at least a portion of the length of the billet;
and
combinations thereof.
12. A method of installing a wellbore device on a downhole tool in a
formation, the method comprising:
(a) securing a downhole tool to a string of tubing, the downhole tool
comprising a device comprising;
a first shape-memory material, the first shape-memory
material having an altered geometric position for run-in
and an original geometric position, wherein the first
shape-memory material is maintained in the altered
geometric position for run-in below a first onset glass
transition temperature T g of the first shape-memory
material, the first shape-memory material comprising a
cross-linked polymer having a first crosslinking ratio,
and
a second shape-memory material, the second shape-memory
material having an altered geometric position for run-in
position and an original geometric position, wherein the
second shape-memory material is maintained in the
altered geometric position for run-in below a second
onset glass transition temperature T g of the second
shape-memory material, where the first T g is different
from the second T g, the second shape-memory material
comprising a cross-linked polymer having a second
crosslinking ratio;
(b) running the downhole tool in a wellbore, and
(c) recovering the first shape-memory material from its altered
geometric position for run-in to a recovered geometric position.

28
13. The method of claim 12 further comprising (d) expanding the second
shape-memory material from its altered geometric position for run-in to a
recovered geometric position.
14. The method of claim 12 or 13 further comprising (e) producing
hydrocarbons from the formation through the wellbore where the first shape-
memory material in the recovered geometric position prevents the undesirable
production of solids from the formation but allows the desirable production of

hydrocarbons.
15. The method of claim 12 or 13 where:
the first shape-memory material comprises a polyurethane formed by
mixing a polyol with a polyisocyanate at a first ratio; and
the second shape-memory material comprises a polyurethane formed by
mixing a polyol with a polyisocyanate at a second ratio different
than the first ratio.
16. The method of claim 12 or 13 where the downhole tool has a length, and
where the first shape-memory material and the second shape-memory material
have a configuration selected from the group consisting of:
concentric layers, where one of the shape-memory materials at least
partially overlaps the other shape-memory material on the
downhole tool;
side-by-side each other along at least a portion of the length of the
downhole tool; and
combinations thereof.


Une figure unique qui représente un dessin illustrant l’invention.

Pour une meilleure compréhension de l’état de la demande ou brevet qui figure sur cette page, la rubrique Mise en garde , et les descriptions de Brevet , États administratifs , Taxes périodiques et Historique des paiements devraient être consultées.

États admin

Titre Date
(86) Date de dépôt PCT 2014-01-13
(87) Date de publication PCT 2014-07-31
(85) Entrée nationale 2015-07-09
Requête d'examen 2015-07-09

Taxes périodiques

Description Date Montant
Dernier paiement 2017-01-04 100,00 $
Prochain paiement si taxe applicable aux petites entités 2018-01-15 50,00 $
Prochain paiement si taxe générale 2018-01-15 100,00 $

Avis : Si le paiement en totalité n’a pas été reçu au plus tard à la date indiquée, une taxe supplémentaire peut être imposée, soit une des taxes suivantes :

  • taxe de rétablissement prévue à l’article 7 de l’annexe II des Règles sur les brevets ;
  • taxe pour paiement en souffrance prévue à l’article 22.1 de l’annexe II des Règles sur les brevets ; ou
  • surtaxe pour paiement en souffrance prévue aux articles 31 et 32 de l’annexe II des Règles sur les brevets.

Historique des paiements

Type de taxes Anniversaire Échéance Montant payé Date payée
Requête d'examen 800,00 $ 2015-07-09
Enregistrement de documents 100,00 $ 2015-07-09
Dépôt 400,00 $ 2015-07-09
Taxe périodique - Demande - nouvelle loi 2 2016-01-13 100,00 $ 2015-07-09
Taxe périodique - Demande - nouvelle loi 3 2017-01-13 100,00 $ 2017-01-04
Final 300,00 $ 2017-09-28

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Filtre Télécharger sélection en format PDF (archive Zip)
Description du
Document
Date
(yyyy-mm-dd)
Nombre de pages Taille de l’image (Ko)
Abrégé 2015-07-09 1 81
Revendications 2015-07-09 6 194
Dessins 2015-07-09 5 210
Description 2015-07-09 22 1 007
Dessins représentatifs 2015-07-09 1 24
Page couverture 2015-08-11 1 62
Revendications 2016-12-05 6 213
Description 2016-12-05 25 1 149
PCT 2015-07-09 2 99
PCT 2015-07-09 2 42
Poursuite-Amendment 2015-08-07 1 24
Poursuite-Amendment 2016-06-17 3 182
Poursuite-Amendment 2016-12-05 14 564
Correspondance 2017-09-28 2 71
Dessins représentatifs 2017-10-13 1 24
Page couverture 2017-10-13 1 64