Patents by Inventor Letizia PRIVITERA

Letizia PRIVITERA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • SHALE HYDRATION INHIBITORS AND SUBTERRANEAN TREATMENT FLUIDS CONTAINING THEM
    Publication number: 20240101886
    Abstract: Method for inhibiting the swelling and/or the dispersion of shales during the treatment of subterranean shale formations comprising the steps of: a) providing a subterranean treatment fluid comprising from 0.001 to 10% by weight of a polyester obtained by reacting a dicarboxylic acid having from 2 to 8 carbon atoms with a specific alkoxylated diamine; b) introducing said treatment fluid into a wellbore at a pressure sufficient to treat the subterranean shale formations.
    Type: Application
    Filed: February 1, 2022
    Publication date: March 28, 2024
    Applicant: LAMBERTI SPA
    Inventors: Laura VIGANÒ, Lorenzo GIARDINI, Letizia PRIVITERA, Luigi MERLI, Daniele CROSTA, Pierangelo PIROVANO, Alessandro D'ALOIA, Cristina PICCO
  • Process for the cleaning oil and gas wellbores
    Patent number: 10781358
    Abstract: Cleaning composition for use in cleaning wellbore walls, tubing or casing comprising: (i) from about 5% to 100% by weight of a mixture M consisting of from 10% to 50% by weight of acetophenone, from 5% to 30% by weight of butyl glycol and from 40% to 80% by weight of a surfactant, and (ii) from 0% to 95% by weight of water, in which (i)+(ii) sum up for at least 85% by weight of the cleaning composition; and process for cleaning a wellbore wall.
    Type: Grant
    Filed: February 17, 2018
    Date of Patent: September 22, 2020
    Assignee: Lamberti SPA
    Inventors: Luigi Merli, Letizia Privitera, Lorenzo Giardini, Pierangelo Pirovano, Giovanni Floridi, Giuseppe LiBassi
  • Method of increasing lubricity of wellbore fluids
    Patent number: 10611948
    Abstract: Method for increasing lubricity of a wellbore fluid comprising the following steps: i) preparing a water in oil microemulsion that contains insoluble particles of metal hydroxides and/or metal oxides in the inner aqueous phase, the insoluble particles being synthesized from their salt precursors in the water droplets of the microemulsion; ii) adding to the wellbore fluid the water in oil microemulsion; iii) injecting the wellbore fluid into a subterranean formation and iv) performing the drilling, completion or coiled tubing operations in the subterranean formation.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: April 7, 2020
    Assignee: Lamberti SPA
    Inventors: Erik Gallo, Luigi Merli, Pierangelo Pirovano, Letizia Privitera, Massimo Cecchetto, Giovanni Floridi, Giuseppe Li Bassi
  • Process for the Cleaning of Oil and Gas Wellbores
    Publication number: 20190093001
    Abstract: Cleaning composition for use in cleaning wellbore walls, tubing or casing comprising: (i) from about 5% to 100% by weight of a mixture M consisting of from 10% to 50% by weight of acetophenone, from 5% to 30% by weight of butyl glycol and from 40% to 80% by weight of a surfactant, and (ii) from 0% to 95% by weight of water, in which (i)+(ii) sum up for at least 85% by weight of the cleaning composition; and process for cleaning a wellbore wall.
    Type: Application
    Filed: February 17, 2018
    Publication date: March 28, 2019
    Applicant: Lamberti S.p.A.
    Inventors: Luigi Merli, Letizia Privitera, Lorenzo Giardini, Pierangelo Pirovano, Giovanni Floridi, Giuseppe Li Bassi
  • METHOD OF INCREASING LUBRICITY OF WELLBORE FLUIDS
    Publication number: 20170321103
    Abstract: Method for increasing lubricity of a wellbore fluid comprising the following steps: i) preparing a water in oil microemulsion that contains insoluble particles of metal hydroxides and/or metal oxides in the inner aqueous phase, the insoluble particles being synthesized from their salt precursors in the water droplets of the microemulsion; ii) adding to the wellbore fluid the water in oil microemulsion; iii) injecting the wellbore fluid into a subterranean formation and iv) performing the drilling, completion or coiled tubing operations in the subterranean formation.
    Type: Application
    Filed: November 6, 2015
    Publication date: November 9, 2017
    Inventors: Erik GALLO, Luigi MERLI, Pierangelo PIROVANO, Letizia PRIVITERA, Massimo CECCHETTO, Giovanni FLORIDI, Giuseppe LI BASSI