A downhole receptacle for tracer installation, comprises a housing and a tracer material arranged within the housing. The tracer material is water soluble. And the housing has an outer shape that corresponds to an outer shape of a standard gas lift valve. Further a method for the installation of a downhole receptacle for a tracer includes the steps of (a) running completion with at least one side pocket mandrel with or without a pre-installed dummy gas lift valve; and (b) replacing the dummy gas lift valve with a downhole receptacle for a tracer or installing a downhole receptacle into the side pocket mandrel.

A downhole receptacle for tracer installation, comprises a housing and a tracer material arranged within the housing. The tracer material is water soluble. And the housing has an outer shape that corresponds to an outer shape of a standard gas lift valve. Further a method for the installation of a downhole receptacle for a tracer includes the steps of (a) running completion with at least one side pocket mandrel with or without a pre-installed dummy gas lift valve; and (b) replacing the dummy gas lift valve with a downhole receptacle for a tracer or installing a downhole receptacle into the side pocket mandrel.

A liner for a shaped charge having integrated tracers. The liner, when the associated shaped charge is detonated, does not create a plug, carrot, or residue in the created perforation tunnel. The liner includes integrated tracers that, after detonation, are scattered into the perforation tunnel and then begin to flow back in formation fluid flow and are identifiable in the flow.

A liner for a shaped charge having integrated tracers. The liner, when the associated shaped charge is detonated, does not create a plug, carrot, or residue in the created perforation tunnel. The liner includes integrated tracers that, after detonation, are scattered into the perforation tunnel and then begin to flow back in formation fluid flow and are identifiable in the flow.

A sensor assembly includes a patch with a wall configured to be seated in a well casing. A sensor is mounted to the wall of the patch. The wall of the patch can define a central passage therethrough configured to allow passage of downhole tools therethrough. The wall of the patch can be expandable from a first compressed diameter to a second expanded diameter. The wall of the patch can include at least one of a corrugated expandable structure, a stretchable structure, and/or an internally trussed expandable structure, for example.

A sensor assembly includes a patch with a wall configured to be seated in a well casing. A sensor is mounted to the wall of the patch. The wall of the patch can define a central passage therethrough configured to allow passage of downhole tools therethrough. The wall of the patch can be expandable from a first compressed diameter to a second expanded diameter. The wall of the patch can include at least one of a corrugated expandable structure, a stretchable structure, and/or an internally trussed expandable structure, for example.

Gas and liquid velocities of fluid in a lift gas assisted well system are estimated by adding liquid and gas tracers downhole and monitoring their travel time over a known distance. Based on estimated velocities, a slip factor is obtained that represents relative velocities of the gas and liquid in the fluid. A flow regime of the fluid is identified based on the slip factor. The flow regime is optionally altered by adjusting one or more operational parameters of the well.

Gas and liquid velocities of fluid in a lift gas assisted well system are estimated by adding liquid and gas tracers downhole and monitoring their travel time over a known distance. Based on estimated velocities, a slip factor is obtained that represents relative velocities of the gas and liquid in the fluid. A flow regime of the fluid is identified based on the slip factor. The flow regime is optionally altered by adjusting one or more operational parameters of the well.

A method for completing a subterranean formation includes conveying a perforator assembly into a borehole drilled in the subterranean formation. The perforator assembly includes at least one shaped charge and at least one tracer package that includes at least one fluid production tracer material and a tracer injector. The method further includes forming at least one tunnel in a production structure by detonating one or more shaped charges and injecting the at least one fluid production tracer material into the formation using the tracer injector after the detonation of the at least one shaped charge. The at least one production tracer material physically associates with at least one resident fluid in the subterranean formation.

A method for completing a subterranean formation includes conveying a perforator assembly into a borehole drilled in the subterranean formation. The perforator assembly includes at least one shaped charge and at least one tracer package that includes at least one fluid production tracer material and a tracer injector. The method further includes forming at least one tunnel in a production structure by detonating one or more shaped charges and injecting the at least one fluid production tracer material into the formation using the tracer injector after the detonation of the at least one shaped charge. The at least one production tracer material physically associates with at least one resident fluid in the subterranean formation.