Fluid loss control additives

Details Fluid loss control additives Fluid loss control additives

E - Fixed Constructions

21

B

E21B 43/16 (2006.01) C09K 8/16 (2006.01) E21B 43/04 (2006.01)

Patent

CA 2137410

Improved fluid loss control in gravel pack placement fluids is achieved when a fluid loss control additive is provided comprising a selectively soluble particulate having a size of less than 1000 microns and having a linear size distribution when cumulative weight percent is plotted against the logarithm of the particle size. The preferred selectively soluble particulate comprises calcium carbonate

On obtient un meilleur contrôle de la perte de fluide dans des fluides de placement de filtres à gravier lorsqu'un additif de contrôle de perte de fluide est utilisé. Cet additif comprend une matière particulaire sélectivement soluble ayant une granulométrie inférieure à 1 000 microns et une distribution de taille linéaire lorsqu'on rapporte le pourcentage massique cumulatif en fonction du logarithme de la taille de particule. La matière particulaire sélectivement soluble comprend, de préférence, du carbonate de calcium.

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