摘要:
The subject disclosure relates to apparatus and methods that are particularly suited for creating a seal in a borehole annulus. More particularly, the subject disclosure relates to a seal with enhanced sealing capability. In one embodiment the subject disclosure relates to a reinforced and permanent swellable packer device.
摘要:
The subject disclosure discloses apparatus and methods that are particularly suited for creating a seal in a borehole annulus. More particularly, the subject disclosure discloses a seal with enhanced sealing capability. In one embodiment the subject disclosure discloses a reinforced and permanent swellable packer device.
摘要:
An example of a wellbore tool assembly includes a mandrel having an outer surface and a longitudinal bore; a tubular, swellable seal member having opposing ends and an inner surface defining a bore between the opposing ends, the seal member encircling a portion of the mandrel; an operable downhole element carried with the mandrel; and a control line connected to the operable downhole element, the control line extending from the downhole element between the outer surface of the mandrel and the inner surface of the seal member to the other side of the seal member from the downhole element.
摘要:
Disclosed herein is a completion device that includes an interior layer that swells when exposed to a wellbore fluid; and an exterior layer encasing the interior layer and configured to be impermeable to the wellbore fluid at temperatures below an activation depth temperature, and configured to be permeable to the wellbore fluid at temperatures above the activation depth temperature. Also disclosed herein is a method of deploying a completion device that includes encasing an interior layer of the device in a temperature-sensitive exterior layer that is impermeable to a fluid in the wellbore at temperatures below an activation depth temperature; attaching the device on a tube string; inserting the tube string into the wellbore; creating a leak path in the temperature-sensitive exterior layer in response to the device being exposed to the activation depth temperature in the wellbore; and swelling the interior layer with the wellbore fluid.
摘要:
A method and apparatus for channel assignment within an ad-hoc communication system utilizing multiple channels is provided herein. Individual nodes receive and send route-request (RREQ) packets on all channels rather than a single channel. Each route-request packet comprises a first and a second table. The first table comprises a channel state for the link and the second table comprises a channel quality metric for the link. Each node updates the channel state and channel quality tables and forwards them in the RREQ packet as part of the route-discovery process. When channel selection is made, the channel selection is based on the channel state and the channel quality tables.
摘要:
The invention is a sealing system, such as a packer, that is used in a wellbore to seal against an exterior surface, such as a casing or open wellbore. The sealing system includes a swellable material that swells from an unexpanded state to an expanded state thereby creating a seal when the swellable material comes into contact with a triggering fluid.
摘要:
Adaptively changing weights for fair scheduling in broadcast environments. In one embodiment, a computer-implemented method allocates bandwidth among a plurality of flows, such as nodes, sharing an output link, such as a network. The method includes adaptively determining a weight for each flow, based on a predetermined criterion, and allocating a portion of bandwidth to each flow proportionally to the weight for the flow. In one embodiment, the predetermined criterion takes into account an input rate of data packets for each flow, while in another embodiment, the predetermined criterion takes into account a queue size for each flow.
摘要:
Disclosed herein is a completion device that includes an interior layer that swells when exposed to a wellbore fluid; and an exterior layer encasing the interior layer and configured to be impermeable to the wellbore fluid at temperatures below an activation depth temperature, and configured to be permeable to the wellbore fluid at temperatures above the activation depth temperature. Also disclosed herein is a method of deploying a completion device that includes encasing an interior layer of the device in a temperature-sensitive exterior layer that is impermeable to a fluid in the wellbore at temperatures below an activation depth temperature; attaching the device on a tube string; inserting the tube string into the wellbore; creating a leak path in the temperature-sensitive exterior layer in response to the device being exposed to the activation depth temperature in the wellbore; and swelling the interior layer with the wellbore fluid.
摘要:
A method and apparatus for channel assignment within an ad-hoc communication system utilizing multiple channels is provided herein. Individual nodes receive and send route-request (RREQ) packets on all channels rather than a single channel. Each route-request packet comprises a first and a second table. The first table comprises a channel state for the link and the second table comprises a channel quality metric for the link. Each node updates the channel state and channel quality tables and forwards them in the RREQ packet as part of the route-discovery process. When channel selection is made, the channel selection is based on the channel state and the channel quality tables.
摘要:
Oilfield elements are described, one embodiment comprising a combination of a normally insoluble metal with an element selected from a second metal, a semi-metallic material, and non-metallic materials; and one or more solubility-modified high strength and/or high-toughness polymeric materials selected from polyamides, polyethers, and liquid crystal polymers. Methods of using the oilfield elements in oilfield operations are also described. This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).