Cement-Polymer Composites for Oilwell Cementing

A. Chougnet; A. Audibert-Hayet; M. Moan; E. Lécolier; B. Guichard

Cement-Polymer Composites for Oilwell Cementing

A. Chougnet ^{1, 2, *} A. Audibert-Hayet ¹ M. Moan ³ E. Lécolier ¹ B. Guichard ²

* Corresponding author

1 IFPEN - IFP Energies nouvelles

2 Eliokem

3 UBO - Université de Brest

A. Chougnet ^{1, 2} AuthorId : 11391184
Correspondent author

A. Audibert-Hayet ¹ AuthorId : 222611
Author

M. Moan ³ AuthorId : 245608
Author

E. Lécolier ¹ AuthorId : 11391185
Author

B. Guichard ² AuthorId : 806893
Author

1 IFPEN - IFP Energies nouvelles (1-4 avenue de Bois Préau 92500 Rueil-Malmaison - France) StructId : 300006

IFPEN - IFP Energies nouvelles (Rond-point de l'échangeur de Solaize, BP 3, 69360 Solaize - France) StructId : 534301

2 Eliokem ( 14 avenue des tropiques, 91955 Courtaboeuf Cedex - France) StructId : 552903

3 UBO - Université de Brest (Université de Bretagne Occidentale - 3 Rue des Archives 29238, Brest - France) StructId : 300314

Abstract : The selection of an optimal cementitious material is critical to maintain zonal isolation for the lifetime of oil & gas or gas storage wells not only for primary cementing but also after well abandonment. Polymer powder/cement composites present good mechanical and durability properties since polymer latex promotes improved adhesion and flexibility to the hardened cement paste. So, for well constructions in aggressive environment, polymer powder/cement composites would be good candidates. During the well construction, the cement slurry placement strongly depends on its rheological behaviour. In this paper, we studied rheological properties of polymer powder/cement composite suspensions: they present a transition from a gel to a liquid behaviour in oscillatory shear. The replacement of cement particles by polymer particles induces a decrease of the storage modulus in the gel state. The good quality of the polymer particle dispersion and their high affinity for cement particles were observed by Scanning Electron Microscopy (SEM). Solid state NMR (29Si and 27Al) and calorimetry allowed to highlight the influence of the polymer addition on both the hydration and hardening of the cement matrix. All these results helped us to understand the relations between the slurry composition, its rheological behaviour and the properties of the hardened materials which allowed us to design new cementing materials.

Document type :

Journal articles

Domain :

Physics [physics]

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Cement-Polymer Composites for Oilwell Cementing

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