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Reservoir monitoring system. At least some of the illustrative embodiments are methods comprising installing a hydrocarbon reservoir monitoring system in a marine environment. The installing may be by: placing a base unit at the sea floor, the base unit communicatively coupled to a computer system a

Reservoir monitoring system. At least some of the illustrative embodiments are methods comprising installing a hydrocarbon reservoir monitoring system in a marine environment. The installing may be by: placing a base unit at the sea floor, the base unit communicatively coupled to a computer system at the surface, the communicative coupling by way of an umbilical cable; mechanically coupling a first termination module to the base unit, the termination module coupled to a first sensor cable; and communicatively coupling the first sensor cable to the umbilical cable.

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1. A method comprising: installing a hydrocarbon reservoir monitoring system in a marine environment by: placing a base unit at the sea floor, the base unit communicatively coupled to a computer system at the surface, the communicative coupling by way of an umbilical cable; and thenmechanically coup

1. A method comprising: installing a hydrocarbon reservoir monitoring system in a marine environment by: placing a base unit at the sea floor, the base unit communicatively coupled to a computer system at the surface, the communicative coupling by way of an umbilical cable; and thenmechanically coupling a first termination module to the base unit, the termination module coupled to a first sensor cable; and thencommunicatively coupling the first sensor cable to the umbilical cable by physically moving a releasable coupler. 2. The method of claim 1 further comprising: mechanically connecting a second termination module to the base unit, the second termination module coupled to a second sensor cable; andcommunicatively coupling the second sensor cable to the umbilical cable. 3. A method comprising: installing a hydrocarbon reservoir monitoring system in a marine environment by: placing a base unit at the sea floor, the base unit communicatively coupled to a computer system at the surface, the communicative coupling by way of an umbilical cable;mechanically coupling a first termination module to the base unit, the termination module coupled to a first sensor cable, the mechanically coupling by: aligning the first termination module with an alignment mechanism of the base unit, the aligning at least in part by an underwater intervention system;lowering the first termination module; andlocking the first termination module in place, the locking at least in part by the underwater intervention system;communicatively coupling the first sensor cable to the umbilical cable by the underwater intervention system mating a first connector portion associated with the base unit to a second connector portion associated with the first termination module. 4. The method of claim 3 wherein aligning further comprises aligning an aperture defined in the first termination module with a pin defined on the base unit. 5. The method of claim 3 wherein aligning further comprises aligning an aperture defined in the first termination module with a conical pin defined on the base unit. 6. The method of claim 3 wherein aligning further comprises at least one selected from the group consisting of: aligning by a remotely operated vehicle (ROV); and aligning by a diver. 7. A method comprising: installing a hydrocarbon reservoir monitoring system in a marine environment by: placing a base unit at the sea floor, the base unit communicatively coupled to a computer system at the surface, the communicative coupling by way of an umbilical cable;mechanically coupling a first termination module to the base unit, the termination module coupled to a first sensor cable; andcommunicatively coupling the first sensor cable to the umbilical cable;mechanically coupling a second termination module to the base unit, the second termination module coupled to a first end of a second sensor cable;communicatively coupling the first end of the second sensor cable to the umbilical cable;connecting a third termination module to the base unit, the third termination module coupled to a second end of the second sensor cable; andcommunicatively coupling the second end of the second sensor cable to the umbilical cable. 8. A system comprising: a base unit comprising: a structure defining a top, a bottom, and a side;a plurality of attachment locations defined by the structure;an enclosure mechanically coupled to the structure, the enclosure defining an interior volume, and the enclosure water tight;optical devices disposed within the enclosure;an umbilical cable mechanically coupled to the structure, and the umbilical cable communicatively coupled to the optical devices;wherein tension forces carried on the umbilical cable proximate to the base unit are communicated to the structure through the enclosure, and the tension forces are not communicated to the optical devices;a first termination module releasably coupled to the base unit at a first attachment location of the plurality of attachment locations, the first termination unit comprising: a frame that defines a front and a back;a first sensor cable comprising a plurality of seismic measurement devices, the first sensor cable mechanically coupled to the frame of the first termination module and extending away from base unit; anda first releasable optical coupler disposed within a primary communicative coupling between the first sensor cable and the optical devices;wherein tension forces carried on the first sensor cable proximate the first termination module are communicated to the structure of the base unit through the frame of the first termination module, and the tension forces carried by the first sensor cable are not communicated to the first releasable optical coupler. 9. The system of claim 8 further comprising: a second termination module releasably coupled to base unit at a second attachment location of the plurality of attachment locations, the second termination unit comprising: a frame that defines a front and a back;a second sensor cable comprising a plurality of seismic measurement devices, the second sensor cable mechanically coupled to the frame of the second termination module and extending away from base unit; anda second releasable optical coupler disposed within a primary communicative coupling between the second sensor cable and the optical devices;wherein tension forces carried on second sensor cable proximate the second termination module are communicated to the structure of the base unit through the frame of the first termination module, and the tension forces carried by the second sensor cable are not communicated to the second releasable optical coupler. 10. The system of claim 8 wherein the first attachment location further comprises: a coarse alignment framework defined by the structure of the base unit, the coarse alignment framework configured to provide coarse alignment of the first termination module with the structure of the base unit during installation in a marine environment; anda fine alignment mechanism defined on the structure of the base unit, the fine alignment mechanism configured to provide fine alignment of the first termination module with the structure of the base unit during installation in the marine environment. 11. The system of claim 10 wherein the coarse alignment framework further comprises: a first plane defined by the structure of the base unit on the side; anda second plane defined by the structure of the base unit on the side, the second plane perpendicular to the first plane. 12. The system of claim 11 wherein the fine alignment mechanism comprises a pin extending from the structure of the base unit, the pin defining a central axis, and the central axis parallel to both the first and second planes. 13. The system of claim 11 wherein the fine alignment mechanism comprises a conical pin extending from the structure of the base unit. 14. The system of claim 8 wherein the first releasable optical coupler further comprises: a first coupler portion rigidly coupled to the frame of the first termination module and having an optical fiber communicatively coupled to the first sensor cable; anda second coupler portion coupled to the structure of the base unit by an intermediate communication cable, the second coupler having an optical fiber communicatively coupled to the umbilical cable;wherein in situations where the first coupler portion is coupled the second coupler portion, the optical fiber of the of the first coupler portion optically couples to the optical fiber of the second coupler portion. 15. The system of claim 8 further comprising a locking mechanism configured to, at least in part, couple the first termination module to the first attachment location. 16. The system of claim 9 further comprising: a third termination module releasably coupled to the base unit at a third attachment location of the plurality of attachment locations, the third termination module comprising: a frame that defines a front and a back;the first sensor cable mechanically coupled to the frame of third termination module on an end of the first sensor cable opposite the first termination module; anda third releasable optical coupler disposed within a secondary communicative coupling between the first sensor cable and the optical devices;wherein tension forces carried on first sensor cable proximate the third termination module are communicated to the structure of the base unit through the frame of the third termination module, and the tension forces carried by the first sensor cable are not communicated to the third releasable optical coupler. 17. The system of claim 16 further comprising: a fourth termination module releasably coupled to the base unit at a fourth attachment location of the plurality of attachment locations, the fourth termination module comprising: a frame that defines a front and a back;the second sensor cable mechanically coupled to the frame of fourth termination module on an end of the second sensor cable opposite the second termination module;a fourth releasable optical coupler disposed within a secondary communicative coupling between the second sensor cable and the optical devices; andwherein tension forces carried on second sensor cable proximate the fourth termination module are communicated to the structure of the base unit through the frame of the fourth termination module, and the tension forces carried by the second sensor cable are not communicated to the fourth releasable optical coupler. 18. The system of claim 9 further comprising: a third termination module releasably coupled to the base unit at a third attachment location of the plurality of attachment locations, the third termination module coupled to the first sensor cable, and wherein if the first sensor cable is severed, a first severed portion of the first sensor cable coupled to the first termination module is operable through the first termination module, and a second severed portion of the first sensor cable coupled to the second termination module is operable through the second termination module; anda fourth termination module releasably coupled to the base unit at a fourth attachment location of the plurality of attachment locations, the fourth termination module coupled to the second sensor cable, and wherein if the second sensor cable is severed, a first severed portion of the second sensor cable coupled to the second termination module is operable through the second termination module, and a second severed portion of the second sensor cable coupled to the fourth termination module is operable through the second termination module. 19. The system of claim 9 further comprising: a third termination module releasably coupled to the base unit at a third attachment location of the plurality of attachment locations, the fourth termination module comprising: a frame that defines a front and a back;a third sensor cable comprising a plurality of seismic measurement devices, the third sensor cable mechanically coupled to the frame of third termination module and extending away from base unit;a third releasable optical coupler disposed within a primary communicative coupling between the third sensor cable and the optical devices;wherein tension forces carried on third sensor cable proximate the third termination unit are communicated to the structure of the base unit through the frame of the third termination module, and the tension forces carried by the third sensor cable are not communicated to the third releasable optical coupler;a fourth termination module releasably coupled to the base unit at a fourth attachment location of the plurality of attachment locations, the fourth termination module comprising: a frame that defines a front and a back;a fourth sensor cable comprising a plurality of seismic measurement devices, the fourth sensor cable mechanically coupled to the frame of fourth termination module and extending away from base unit;a fourth releasable optical coupler disposed within a primary communicative coupling between the fourth sensor cable and the optical devices; andwherein tension forces carried on fourth sensor cable proximate the fourth termination module are communicated to the structure of the base unit through the frame of the fourth termination module, and the tension forces carried by the fourth sensor cable are not communicated to the fourth releasable optical coupler. 20. The system of claim 9 wherein the first sensor cable and second sensor cable are the same cable coupled on a first end to the first termination module and coupled on a second end to the second termination module. 21. A system comprising: means for distributing communicative channels from an umbilical cable that extends from the surface, the means for distributing proximate the sea floor;first means for releasable mechanically coupling a first sensor cable to the means for distributing, the first means for releasable mechanically coupling coupled to the means for distributing;a means for communicatively coupling the first sensor cable to the umbilical cable, the means for communicatively coupling distinct from the first means for releasable mechanically coupling;second means for releasable mechanically coupling a second sensor cable to the means for distributing, the second means for releasable mechanically coupling coupled to the means for distributing; anda means for communicatively coupling the second sensor cable to the umbilical cable, the means for communicatively coupling the second sensor cable distinct from the second means for releasable mechanically coupling. 22. The system of claim 21 wherein the means for distributing further comprising means for containing optical devices and for transferring tension forces on the umbilical cable to a structure of the means for distributing such that substantially no force coupled to the structure is applied to the optical devices. 23. The system of claim 21 wherein the means for distributing further comprises means for accepting the first means for releasable coupling in an abutting relationship with the means for distributing. 24. The system of claim 21 wherein the first means for releasable mechanically coupling further comprises means for mechanically and optically coupling to the means for communicatively coupling the first sensor cable to the umbilical cable. 25. The system of claim 21 wherein the first sensor cable and the second sensor cable are the same sensor cable. 26. A system comprising: means for distributing communicative channels from an umbilical cable that extends from the surface, the means for distributing proximate the sea floor;first means for releasably coupling a first sensor cable to the means for distributing, the first means for releasably coupling coupled to the means for distributing; andsecond means for releasably coupling a second sensor cable to the means for distributing, the second means for releasably coupling coupled to the means for distributing;the means for distributing further comprises a means for accepting the first means for releasable coupling in an abutting relationship with the means for distributing, the means for accepting comprises means for rough alignment of the first means for releasable coupling; andmeans for fine alignment of the first means for releasable coupling.