Patents by Inventor Adrianus M. P. M. Hagelaars

Adrianus M. P. M. Hagelaars 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).

  • Method of placing and consolidating a mass of particulate material and composition for use in carrying out said method
    Patent number: 4428426
    Abstract: Sand grains coated with a solid non-cured epoxy resin with a softening point above 35.degree. C. are placed in a well for gravel pack, well repair or fracturing purposes. The epoxy resin softens at formation temperature and reacts with a hardener (such as a tertiary amine) diluted in water present in the pore space of the mass of sand grains. A consolidated mass of sand grains is thus obtained. The coated sand grains can be transported to the well site and stored over long periods at relatively high temperatures without risk of quality decrease.
    Type: Grant
    Filed: November 18, 1981
    Date of Patent: January 31, 1984
    Assignee: Shell Oil Company
    Inventors: David R. Davies, Edwin A. Richardson, Adrianus M. P. M. Hagelaars
  • Process for consolidating water-wet sands with an epoxy resin-forming solution
    Patent number: 4291766
    Abstract: In a well treating process for consolidating a mass of particles with an epoxy resin precipitated from a resin-forming solution, a significant improvement is provided by using: a polyamino curing agent, a particular ratio of curing agent to epoxide, and a pretreatment which wets the particles with an aqueous liquid that contains an effective proportion of a dimethylaminomethyl-substituted phenol.
    Type: Grant
    Filed: June 2, 1980
    Date of Patent: September 29, 1981
    Assignee: Shell Oil Company
    Inventors: David R. Davies, Jacobus J. M. Zuiderwijk, Adrianus M. P. M. Hagelaars