The disclosed embodiments include gravel pack assemblies, method to bypass a fluid restrictor during gravel packing operations, and methods to control fluid flow during and after gravel packing operations. In one embodiment, a gravel pack assembly including a flow restrictor that is coupled to a downhole string that is deployed in a borehole is disclosed. The flow restrictor forms a first fluid passageway from the borehole to an internal cavity of the string. The gravel pack assembly includes a fluid bypass portion having a first chamber, a sealing member inserted into the first chamber; and an actuation assembly operable to actuate the sealing member. The fluid bypass portion forms a second fluid passageway from the borehole to the internal cavity of the downhole string prior to actuation of the actuation assembly. After actuation of the actuation assembly, fluid flow through the second fluid passageway is restricted by the sealing member.

A multi-functional well completion apparatus and method of operation thereof that offers the ability, in a single trip and with limited running tool manipulation, to perform downhole completion operations, such as gravel pack operations or sand control frac or other fluid stimulation operations is described. The well completion tool has multiple functions or operational positions by using a self-closing time delay valve without the need of service tools, thereby saving rig time, reducing operating costs and operational risks associated with tripping service tools into and out of a wellbore.

A multi-functional well completion apparatus and method of operation thereof that offers the ability, in a single trip and with limited running tool manipulation, to perform downhole completion operations, such as gravel pack operations or sand control frac or other fluid stimulation operations is described. The well completion tool has multiple functions or operational positions by using a self-closing time delay valve without the need of service tools, thereby saving rig time, reducing operating costs and operational risks associated with tripping service tools into and out of a wellbore.

A technique facilitates formation of a gravel pack along relatively lengthy wellbores. According to an embodiment, a completion system comprises a plurality of screen assemblies. The completion system also has an alternate path system disposed along the plurality of screen assemblies. The alternate path system includes shunt tubes, e.g. transport tubes, coupled together by jumper tubes. An anti-buckling structure is coupled to each jumper tube to prevent buckling when high operational pressures, e.g. operating pressures of 9000 psi or higher, are applied to the alternate path system.

A technique facilitates formation of a gravel pack along relatively lengthy wellbores. According to an embodiment, a completion system comprises a plurality of screen assemblies. The completion system also has an alternate path system disposed along the plurality of screen assemblies. The alternate path system includes shunt tubes, e.g. transport tubes, coupled together by jumper tubes. An anti-buckling structure is coupled to each jumper tube to prevent buckling when high operational pressures, e.g. operating pressures of 9000 psi or higher, are applied to the alternate path system.

A technique facilitates formation of a gravel pack along relatively lengthy wellbores. According to an embodiment, a completion system comprises a screen assembly and an alternate path system disposed along the screen assembly. The alternate path system may include a transport tube and a packing tube placed in fluid communication at a manifold. The manifold is disposed along the screen assembly. In some embodiments, the completion system may comprise multiple screen assemblies with multiple corresponding manifolds. The packing tube is protected against erosion by a liner and a surrounding housing which are positioned to conduct fluid flow from the manifold as fluid flow moves from the transport tube, through the manifold, and into the packing tube during a gravel packing operation.

A technique facilitates formation of a gravel pack along relatively lengthy wellbores. According to an embodiment, a completion system comprises a screen assembly and an alternate path system disposed along the screen assembly. The alternate path system may include a transport tube and a packing tube placed in fluid communication at a manifold. The manifold is disposed along the screen assembly. In some embodiments, the completion system may comprise multiple screen assemblies with multiple corresponding manifolds. The packing tube is protected against erosion by a liner and a surrounding housing which are positioned to conduct fluid flow from the manifold as fluid flow moves from the transport tube, through the manifold, and into the packing tube during a gravel packing operation.

A technique facilitates a gravel packing operation in a well. The system may utilize a Y-manifold having a manifold body through which or along which a gravel slurry may be flowed. A plurality of exit end shunt connectors extends from the manifold body to enable connection with corresponding exit end shunt tubes at a position separated from the manifold body. Additionally, a plurality of entrance end shunt connectors extends from the manifold body in a direction generally opposite the exit end shunt connectors. The extended entrance end shunt connectors enable connection with corresponding entrance end shunt tubes at a position separated from the manifold body.

A technique facilitates a gravel packing operation in a well. The system may utilize a Y-manifold having a manifold body through which or along which a gravel slurry may be flowed. A plurality of exit end shunt connectors extends from the manifold body to enable connection with corresponding exit end shunt tubes at a position separated from the manifold body. Additionally, a plurality of entrance end shunt connectors extends from the manifold body in a direction generally opposite the exit end shunt connectors. The extended entrance end shunt connectors enable connection with corresponding entrance end shunt tubes at a position separated from the manifold body.

A methane hydrate production method comprising a step of performing a reservoir grouting process. The reservoir grouting process comprises: injecting a grouting agent into a frozen soil reservoir on the land or a seabed reservoir for targeting methane hydrate existing within sand particles of the target reservoirs; or injecting a filling material into cavities naturally or artificially occurred in a frozen soil reservoir on the land or a seabed reservoir for targeting methane hydrate existing within sand particles of the target reservoirs, and enabling a grouting body being constructed.