Gravel packing system with diversion of fluid
OwnerRobert L. Bullickinventor
Life of this patent
Estimating the term…
Abstract
Method and apparatus for gravel packing wells are provided. The area available for flow of fluid through a screen device is increased as increasing amounts of gravel are pumped into the well. External or internal means for increasing flow area are provided. Gravel pack screen assemblies by which flow area can be incrementally increased are disclosed.
Claims30
A method of gravel packing a selected interval of a well comprising:
- placing a screen in the well and anchoring the screen to a location opposite the selected interval;
- and
- increasing the area of the screen open for flow therethrough during gravel-packing.
A method for gravel packing a selected interval of a well comprising:
- placing a packer in the well below the interval where gravel is to be placed and setting the packer;
- placing a screen in the well, the screen being at least partly covered by a sleeve, the sleeve being removably fixed to and slidable over the screen;
- and
- with the screen fixed to the packer, releasing the sleeve from the screen and pumping a slurry down the well, sliding the sleeve so as to expose increasing area of the screen for flow therethrough.
A method for gravel packing a selected interval of a well comprising:
- placing a screen assembly in the well, the screen assembly comprised of a screen, a packer connected to the screen, internal means for plugging flow through the screen and a wash pipe, the wash pipe having means attached thereto for removing the internal means for plugging;
- positioning the screen opposite the selected interval and setting the packer;
- and
- pumping gravel down the well and moving the wash pipe to remove the internal plugging means from the screen.
Apparatus for controlling particle movement into a well comprising:
- .
- a screen device;
- and
- a sleeve having an end to move over the screen device, the sleeve being adapted to slidably move over the screen device so as to expose increasing area of the screen for flow through the screen below the end.
Apparatus for controlling particle movement into a well comprising:
- a screen device, the screen device being plugged with internal means for plugging;
- a wash pipe adapted to move inside the screen, the wash pipe having attached thereto means for removing the internal means for plugging of the screen device.
Apparatus for controlling particle movement into a well comprising:
- a screen device, the screen device being plugged to axial flow by a plurality of spaced-apart segments, the spacing of the segments being selected;
- and
- a wash pipe, the wash pipe having attached thereto at least one cup designed to prevent flow between the wash pipe and the screen.
Dependencies are inferred from the claim text.