Single packer with a sealing layer shape enhanced for fluid performance
AssigneeSchlumberger Technology Corporation
InventorsPierre-Yves Corre, Jean-Louis Pessin, Julian J. Pop, Stephane Metayer, Kathiravane Tingat Cody
Life of this patent
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Abstract
A system and/or a method collects formation fluids using a single packer with expansion rings and/or an irregular sealing layer. The packer may have an expansion ring extending around an outer circumference. The expansion ring may seal a portion of a wellbore to sample fluid from a formation. An irregular sealing layer may facilitate leaking between drains of the packer. The irregular sealing layer may have grooves through which fluid may flow. The irregular sealing layer may be composed of fibers and/or plastic.
Claims19
A system for collecting fluid in a wellbore comprising:
- an outer flexible skin having an outer diameter;
- a plurality of rings disposed around the outer diameter;
- a plurality of drains embedded into the outer flexible skin, wherein the plurality of drains are configured to move together with the outer flexible skin, and wherein the flexible skin is configured to expand against a surrounding wellbore such that the plurality of rings abut the wall of the surrounding wellbore:
- and
- a mandrel positioned within the outer flexible skin.
A method comprising:
- deploying a packer assembly into a wellbore wherein the packer assembly inflates toward a wall of the wellbore and has an opening connected to a flow line for receiving fluid and two exterior rings extending around a circumference of the packer assembly, wherein the opening moves toward the wall when the packer assembly inflates, and wherein the opening is embedded in a flexible skin;
- expanding the packer assembly such that the exterior rings abut the wall of the wellbore, and wherein the flexible skin engages the wall of the wellbore;
- isolating a section of the wellbore by creating a seal between the wellbore wall and the exterior rings;
- and
- obtaining fluid through the opening.
A sampling tool comprising:
- an outer sealing layer having irregularities formed in an outer surface of the outer sealing layer;
- a plurality of drains embedded into the outer sealing layer, wherein the outer sealing layer is configured to abut a wall of a wellbore;
- a flow line connected to an opening for moving the fluid into a packer assembly;
- a mandrel positioned within the outer sealing layer;
- and
- a plurality of rubber rings disposed around the outer sealing layer.
Dependencies are inferred from the claim text.