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EP0091377A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Well cementing compositions for fighting annular flow of gas under pressure

Assignee: Pumptech NV
•
Filing: 1983-04-01
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Granted: —
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Expires: 2003-04-01
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Abstract

Abstract Translated from French L'invention concerne des compositions de ciment pour cimentation de puits qui permettent de lutter efficacement contre le cheminement de gaz sous pression, jusqu'à plus de 250°C. La composition de ciment contient un latex de styrène-butadiène et un stabilisant qui inhibe les propriétés filmogènes du latex sauf lorsque le cheminement du gaz se produit. Le film de latex interrompt le cheminement du gas après un parcours extrêmement bref. The invention relates to cement compositions for well cementing which make it possible to effectively combat the flow of gas under pressure, up to more than 250 ° C. The cement composition contains a styrene-butadiene latex and a stabilizer which inhibits the film-forming properties of the latex except when gas flow occurs. The latex film interrupts the gas flow after an extremely short journey.

Inventors

  • 👤 Philippe André Parcevaux
  • 👤 Bernard Maurice Piot
  • 👤 Claude Joseph Vercaemer

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-03 19:33
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B24/00; C04B24/24; C04B24/26; C04B24/2676; C09; C09K; C09K8/00; C09K8/42; C09K8/46; C09K8/467; C09K8/487; C04B2103/00; C04B2103/0027; C04B2103/0028; C04B2103/0035

Claims Analysis

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References Cited (Backward Citations)

US2742441A Cited
US3465825A Cited
USRE28780E Cited
US4086201A Cited
US4258790A Cited

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