A flow conveyed plugging device for use in a well, the device can include a body, and one or more lines extending outwardly from the body, each of the lines having a lateral dimension that is substantially smaller than a size of the body. A method of plugging an opening in a well can include deploying at least one flow conveyed plugging device into the well, the flow conveyed plugging device including a body and, extending outwardly from the body, at least one of the group consisting of: a) one or more fibers and b) one or more lines, the flow conveyed plugging device being conveyed by flow in the well into sealing engagement with the opening. Another flow conveyed plugging device can include a body, and fibers extending outwardly from the body. The flow conveyed plugging device degrades and thereby permits flow through an opening in the well.

Various embodiments disclosed relate to silane-based tackifiers for treatment of subterranean formations. In various embodiments, the present invention provides a method of treating a subterranean formation. The method includes placing in the subterranean formation a tackifier having the structure: or a salt thereof, wherein the variables are as defined herein. ##STR00001##

Systems and methods describe to a downhole tool with an expandable ball seat. More specifically, the systems and methods include a sliding downhole tool with a moving screen, wherein the screen is provisionally protected by a temporary member.

A method and system for supporting unstable geologic materials surrounding a borehole after the borehole is drilled, while reducing the vertical migration in a sand pack behind a slotted screen in the casing. An annulus is defined between a drill casing and a continuous screened casing. Alternating sand fills and sealing layers are deposed in the annulus along a length of the borehole. The length of the sealed interval between the screened casing and the hole wall is reduced, allowing flow connection between the surrounding geologic formation and the interior of the casing over most of the casing length. The sand pack design between the screen and the borehole wall has a sufficient number of sealed barriers to vertical flow to approximate an ideal sand backpacking, which has a vertical conductivity no greater than that of the formation and a relatively low impedance to horizontal flow through the sand pack.

A downhole sand control completion system includes a completion string extendable within a wellbore and including one or more sand control screen assemblies arranged about a base pipe, each sand control screen assembly including one or more sand screens positioned about the base pipe. A shunt system is positioned about an exterior of the base pipe to receive and redirect a gravel slurry flowing in an annulus defined between the completion string and a wellbore wall. A return tube is positioned about the exterior of the base pipe and extends longitudinally along a portion of the completion string. The return tube defines a plurality of openings to receive a portion of a fluid in the annulus into the return tube to be conveyed into an interior of the base pipe via the return tube.

A downhole sand control completion system includes a completion string extendable within a wellbore and including one or more sand control screen assemblies arranged about a base pipe, each sand control screen assembly including one or more sand screens positioned about the base pipe. A shunt system is positioned about an exterior of the base pipe to receive and redirect a gravel slurry flowing in an annulus defined between the completion string and a wellbore wall. A return tube is positioned about the exterior of the base pipe and extends longitudinally along a portion of the completion string. The return tube defines a plurality of openings to receive a portion of a fluid in the annulus into the return tube to be conveyed into an interior of the base pipe via the return tube.

A method of treating a subterranean formation comprises forming a storable aqueous suspension comprising a carrier fluid, a superabsorbent polymer, a proppant the proppant being suspended in the carrier fluid as a substantially perfectly supported particulate; diluting the storable aqueous suspension in-line to a desired concentration; and introducing the diluted storable aqueous suspension into the subterranean formation. A sand control method is also disclosed.

A method of treating a subterranean formation penetrated by a wellbore comprises introducing into the subterranean formation a treatment fluid comprising encapsulated particles having a core of a crosslinking agent and a shell of a chitosan encapsulant disposed on the core; releasing the crosslinking agent from the encapsulated particles with an acid; reacting the released crosslinking agent with the chitosan encapsulant or a derivative thereof forming a polymerized chitosan; and consolidating a plurality of particles in the subterranean formation with the polymerized chitosan.

A method of filtering a wellbore fluid can include receiving a wellbore fluid in a chamber. The chamber can be defined by an inner surface of a casing string that is positioned downhole in a wellbore. The method can further include filtering debris particles from the wellbore fluid by a filter assembly positioned within an inner region of the casing string. The filter assembly may include a plurality of slots and the filter assembly may be rotated by the wellbore fluid passing through the plurality of slots in the filter assembly.

A method of filtering a wellbore fluid can include receiving a wellbore fluid in a chamber. The chamber can be defined by an inner surface of a casing string that is positioned downhole in a wellbore. The method can further include filtering debris particles from the wellbore fluid by a filter assembly positioned within an inner region of the casing string. The filter assembly may include a plurality of slots and the filter assembly may be rotated by the wellbore fluid passing through the plurality of slots in the filter assembly.