Patents Assigned to Cross Timbers Oil
  • Patent number: 5813463
    Abstract: In the preferred embodiment of the present invention, completion operations are performed which include a perforation operation followed by a fracturing operation. During the perforation operation perforatons (or other means for creating flow paths) are shot at a low perforation density, in order to create a flowpath between the wellbore and the hydrocarbon bearing formaton as well as an unknown number of relatively wide fractures and relatively few, but unknown number of fracture initiation sites in the hydrocarbon bearing formation. During the fracturing operations, relatively small, high-concentration proppant slugs with clean spacer stages are pumped early in the treatment, in order to screenout the narrower fractures, but these slugs are not sufficient to screenout the wider fractures.
    Type: Grant
    Filed: January 28, 1997
    Date of Patent: September 29, 1998
    Assignee: Cross Timbers Oil Company
    Inventor: Jerome M. Stadulis
  • Patent number: 5597043
    Abstract: In the preferred embodiment of the present invention, completion operations are performed which include a perforation operation followed by a fracturing operation. During the perforation operation perforations (or other means for creating flow paths) are shot at a low perforation density, in order to create a flowpath between the wellbore and the hydrocarbon bearing formation as well as an unknown number of relatively wide fractures and relatively few, but unknown number of fracture initiation sites in the hydrocarbon bearing formation. During the fracturing operations, relatively small, high-concentration proppant slugs with clean spacer stages are pumped early in the treatment, in order to screenout the narrower fractures, but these slugs are not sufficient to screenout the wider fractures.
    Type: Grant
    Filed: March 17, 1995
    Date of Patent: January 28, 1997
    Assignee: Cross Timbers Oil
    Inventor: Jerome M. Stadulis