Apparatuses, systems, and methods for data and/or power transfer to and from an ocean bottom seismic node are described. In an embodiment, an autonomous seismic node is configured with a bulkhead connector assembly that may be coupled to a plug assembly for data and/or power transfer and a pressure cap assembly when utilized subsea. A plurality of pins may be located on the bulkhead assembly in a substantially flat contact surface to obtain an external electrical connection to the node. The pins on the bulkhead assembly may form a flat circuit with an external device, such as a plug assembly or pressure cap assembly. One or more external devices may be coupled to the pressure cap assembly and/or bulkhead connector for increased functionality to the node. A quick release assembly and/or locking ring may be utilized to fasten any external device to the bulkhead connector assembly.

A method of manufacturing a streamer section. The method includes coupling together a plurality of prefabricated harness modules. A harness module includes a plurality of geophysical sensors disposed along a length of the harness module and a sensor node communicatively coupled to the plurality of sensors. A first connector is disposed at a first end of the harness module and a second connector disposed at a second end of the harness module. The first connector is coupled to the sensor node and is configured to couple to a second harness module and receive data from a sensor node in the second harness module. The second connector is coupled to the sensor node and is configured to couple to a third harness module and forward data to a sensor node in the third harness module.

A packed sensor line array system includes sensors mounted outboard of cable packs wrapped around a central mandrel. The system may have multiple rows (layers) of the sensors and cable packs, surrounded by a cannister. Cable retainers may be used to retain cable ends near sensors, to keep the cable ends out of the way of subsequent winding operations. The winding may be done in situ, with the mandrel mounted to a rotatable chuck that is rotated to wind the individual cable packs sequentially around the mandrel, with positioning of the sensors outboard of the windings occurring between the winding operations. A positionable indexing tool may be coupled to and moved along the mandrel, to define a space along the mandrel for each cable pack winding.

A downhole seismic array is disclosed. The array comprises a load-bearing cable for carrying a series of seismic sensor units arranged along its length. Each seismic sensor unit is attached to the load-bearing cable via a vibration-absorbing material and has a magnet to attach the seismic sensor unit to the well casing.

A connector is provided with a forward bulkhead assembly having a forward bulkhead device and an aft bulkhead assembly having an aft bulkhead device. Each of the forward bulkhead assembly and the aft bulkhead assembly includes connections for wires and optical fibers of an acoustic array. The forward bulkhead assembly includes a clamshell-type ring of two halves on opposite sides of the forward bulkhead assembly. The clamshell has a locking feature and a locking ring attached to the locking feature. The locking ring connects the forward bulkhead assembly with the aft bulkhead assembly.

A hybrid cable for collecting data inside a well includes an electrical cable extending along a longitudinal axis of the hybrid cable, an optical fiber extending along the longitudinal axis, an armor that extends along the longitudinal axis, and encircles the electrical cable and the optical fiber, and a connecting device extending along the longitudinal axis, to enclose the electrical cable and the optical fiber, and to be enclosed by the armor. The connecting device has an unsmooth external surface.

Systems and methods of deploying seismic data acquisition units from a marine vessel are disclosed. The system can include a mechanical attachment device comprising a cavity formed by interlocking a first member and a second member. Protrusions located on the first member and second member can increase the coefficient of friction between a rope and the mechanical attachment device responsive to an increase in tension on the rope. A lanyard can couple a seismic data acquisition unit to the mechanical attachment device.

A marine seismic sensor system includes a seismic node having at least one seismic sensor. The sensor is configured for sampling seismic energy when towed through a water column on a rope. The coupling can be adapted to modulate transmission of acceleration from the rope to the seismic node.

An assembly with a first coupling having a forward bulkhead device is provided. The forward bulkhead device contains a first connector insert having first end connections for wires and optical fibers of an acoustic array. The assembly also includes a second coupling having an aft bulkhead device therein. The aft bulkhead device contains a second connector insert having second end connections for the wires and optical fibers of the acoustic array. The forward bulkhead device further includes an alignment assembly. The alignment assembly is matable with the aft bulkhead device to align the first connector insert with the second connector insert. The forward bulkhead device further includes a locking ring connecting the forward bulkhead device with the aft bulkhead device.

The invention discloses a landslide deep displacement remote visual monitoring system, comprising monitoring system and transmitting system, the monitoring system comprises displacement sensor, the displacement sensor is arranged on chassis, anchor eyes are provided on the chassis, wire embedding hole is arranged at centroid of the chassis, multiple bracing wires are provided in the wire embedding hole, the transmitting system comprises a data acquisition unit, the data acquisition unit is arranged on the displacement sensor for collecting data thereof, the data acquisition unit is connected to a network transmission module, the network transmission module is connected to a data receiving module through the network, the data receiving module is also provided with network transmission module, the data receiving module is connected to computer, the computer displays the data through display screen.