Electric completion system and methodology
A technique facilitates construction and operation of electric completion systems which may be used in the oil and gas industry. The technique is able to eliminate some or all hydraulic lines and replace them with electric lines. Depending on the application, the electric power may be provided via a surface-based power source and/or a downhole power storage/generation source. Corresponding completion components, such as control valves, subsurface safety valves, gauges, and/or other completion tools, are electrically operated via power and communication provided through the electric lines and/or wireless telemetry without the cost and complexity of hydraulic control lines and downhole hydraulic components.
1 . A system for use in a borehole, comprising:
an electric completion system having:
an upper completion including a production packer and a wireless system disposed above the production packer, the wireless system configured to provide communication of data between the electric completion system and a surface facility;
a lower completion coupled with the upper completion below the production packer of the upper completion by a coupling system that includes an inductive coupler and a hydraulic wet mate connection, the lower completion including a plurality of electric flow control valves positioned to control inflow and outflow of fluid with respect to the lower completion;
an electric line system deployed along the upper completion and along the lower completion to the plurality of electric flow control valves; and
an electric subsurface safety valve, wherein the electric subsurface safety valve and the plurality of electric flow control valves are operable via power supplied downhole by the electric line system.
2 . The system as recited in claim 1 , wherein the electric completion system is an open hole electric completion system.
3 . The system as recited in claim 1 , wherein the lower completion comprises a sand control system.
4 . The system as recited in claim 3 , wherein the sand control system comprises a plurality of sand control assemblies positioned along corresponding well zones.
5 . The system as recited in claim 1 , wherein the lower completion comprises a plurality of isolation packers positioned to isolate a plurality of corresponding well zones disposed along the borehole.
6 . The system as recited in claim 5 , wherein the plurality of electric flow control valves comprises at least one electric flow control valve positioned to control flow with respect to each corresponding well zone.
7 . The system as recited in claim 6 , wherein a plurality of sensors is located along the lower completion.
8 . The system as recited in claim 7 , wherein the plurality of sensors comprises at least one sensor positioned in each corresponding well zone.
9 . The system as recited in claim 1 , wherein the electric subsurface safety valve is located along the upper completion.
10 . The system as recited in claim 1 , wherein the electric completion system further comprises a downhole power device coupled to the electric line system to provide electrical power to a plurality of devices located downhole, including the plurality of electric flow control valves.
11 . The system as recited in claim 10 , wherein the downhole power device comprises a power storage device.
12 . The system as recited in claim 10 , wherein the downhole power device comprises a power generation device.
13 . A method, comprising:
assembling an electric completion system having inflow and outflow of fluid controlled by a plurality of electric flow control valves, wherein the electric completion system comprises a lower completion coupled with an upper completion below a production packer of the upper completion by a coupling system that includes an inductive coupler and a hydraulic wet mate connection, and wherein the plurality of electric valves is disposed in the lower completion;
deploying the electric completion system in a borehole;
utilizing a wireless system disposed above the production packer of the upper completion to provide communication of data between the electric completion system and a surface facility; and
utilizing an electric line system deployed along the upper completion and along the lower completion to provide electric power to the plurality of electric valves.
14 . The method as recited in claim 13 , further comprising providing electric power to the electric line system from a downhole source.
15 . The method as recited in claim 13 , further comprising obtaining sensor data along a plurality of well zones via sensors disposed along the electric completion system.
16 . The method as recited in claim 15 , further comprising isolating the well zones of the plurality of well zones via isolation packers disposed along the electric completion system.
17 . A system for use in a borehole, comprising:
a well system utilizing at least one electric power source to provide power for actuating each of a plurality of electronically controlled devices downhole, the well system comprising:
an electric completion system located in a wellbore, the electric completion system having:
a lower completion coupled with an upper completion below a production packer of the upper completion by a coupling system that includes an inductive coupler and a hydraulic wet mate connection, wherein a portion of the inductive coupler is mounted to a running tool extending through the production packer;
a plurality of electric valves positioned to control inflow of fluid from the wellbore and outflow of fluid to the wellbore, wherein the plurality of electric valves is disposed in the lower completion;
a plurality of pressure and temperature sensors disposed along the electric completion system; and
a wireless system located along the electric completion system to provide wireless transmission of at least one of communication data and power with respect to at least one of the plurality of pressure and temperature sensors or the plurality of electric valves; and
an electric line system disposed along the upper completion and along the lower completion to the plurality of electric valves.
18 . The system as recited in claim 17 , wherein the lower completion is substantially disposed within a horizontal section of the wellbore.
19 . The system as recited in claim 17 , wherein the electric line system is disposed along the upper completion and along the lower completion to carry both communication data and power.
20 . The system as recited in claim 18 , wherein the lower completion comprises a plurality of isolation packers positioned along the lower completion to isolate a plurality of corresponding well zones.