Method and flush module for connecting streamer sections to an external device. The flush module includes a housing; a first end connector attached to the housing and configured to connect to a first element of the streamer spread; a second end connector attached to the housing and configured to connect to a second element of the streamer spread; and an external connector attached to the housing and configured to connect to a third element of the streamer spread. The external connector is configured to pivot between (a) a close position during which the external connector is entirely located within the housing, and (b) an open position during which a distal end of the external connector is located outside the housing.

Method and flush module for connecting streamer sections to an external device. The flush module includes a housing; a first end connector attached to the housing and configured to connect to a first element of the streamer spread; a second end connector attached to the housing and configured to connect to a second element of the streamer spread; and an external connector attached to the housing and configured to connect to a third element of the streamer spread. The external connector is configured to pivot between (a) a close position during which the external connector is entirely located within the housing, and (b) an open position during which a distal end of the external connector is located outside the housing.

The present invention discloses a microseismic monitoring system, which includes at least a microseismic sensor, a push rod set at both ends of the microseismic sensor through the first connecting mechanism for sending the microseismic sensor into a monitoring hole, a guide mechanism installed on the push rod for guiding the microseismic sensor into the monitoring hole, and a microseismic monitoring computer connecting with the microseismic sensor signal. The microseismic sensor is reusable. The first connecting mechanism can make the push rod swing relative to the microseismic sensor. The guide mechanism is a three-roller guide mechanism. The present invention can satisfy the need of monitoring different locations in monitoring holes with large depths for multiple microseismic sensors, and solve problems of effective contact coupling between the microseismic sensors and monitoring holes, which improves the accuracy of microseismic monitoring and reduces the cost of a microseismic monitoring system.

System comprising at least one conductors and at least one sensing node which comprises at least one sensor device wherein each conductor is provided with at least one electrically conductive core surrounded by an insulating sheath wherein the at least one sensor device is electrically connected with at least one conductive core of at least one first conductor of the at least one conductor. The at least one node is provided with an attachment device for mechanically attaching the at least one node to at least one second conductor of the at least one conductor. The attachment device is arranged for mechanically attaching the at least one node to the at least one first conductor such that the insulating sheath at the location where the at least one node is attached to the at least one first conductor remains intact. The node is further provided with an inductive coupling device which is arranged to provide the electrical connection in the form of an inductive coupling of the at least one sensor device with at least one conductive core of the at least one second conductor.

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.

Geophysical sensor cables. At least some of the example embodiments are sensor cable sections including hydrophone groups defined along a geophysical sensor cable section, the hydrophone group may include: a substrate of flexible material having electrical traces thereon, the substrate within the internal volume or embedded within the outer jacket, and the substrate having has a length measured parallel to the longitudinal axis; and a plurality of hydrophones mechanically coupled to the substrate. The substrate may have a variety of shapes, including one or more strips, helix, double helix, and cylindrical.

Geophysical surveys in marine environments. At least some of the illustrative embodiments are methods including: attaching a first sensor module to a sensor cable having an outer jacket, the first sensor module electrically isolated from an electrical conductor disposed within the outer jacket of the sensor cable; attaching a second sensor module to the sensor cable, the second sensor module electrically isolated from an electrical conductor disposed within the outer jacket of the sensor cable; placing the sensor cable and the sensor modules onto a sea floor; communicating with the sensor modules by way of the electrical conductor disposed within the outer jacket; collecting geophysical data by the first and second sensor modules while the sensor cable is on the sea floor; and downloading to a computer system geophysical data from the first and second sensor modules.

Coupling of geophysical sensor cable sections. At least some of the example embodiments are methods including coupling a first geophysical sensor cable section to a second geophysical sensor cable section. The coupling may be by: telescoping a first connector of the first geophysical sensor cable section into a second connector, the first connector comprising a male connector portion with external threads, and the second connector comprising a coupling ring with internal threads; abutting a first portion of a clam-shell gear against the coupling ring; closing the clam-shell gear such that a second portion of the clam-shell gear abuts the coupling ring, the clam-shell gear defining gear teeth on an outside diameter of the clam-shell gear; mating a pinion gear to the clam-shell gear; and turning the coupling ring relative to the male connector portion using of the pinion gear turning the clam-shell gear.

A system (100) for attaching devices of subsea equipment to a line (10) comprising a line holding mechanism (11,110) and a line holding unit (404). The line holding unit (404) comprises a 5 longitudinal slit (403) for receiving the line (10), multiple gripping elements (13,130,230), and at least one resilient element (12,120,220), related to one subsea device. The resilient element(s) is/are configured to force the multiple gripping elements (13; 130,230) in a direction towards the line (10), whereby the line holding unit (404) is locked to the line (10) in a locking position. By the invention an improved latching device and an accompanying system for attaching and 10 detaching subsea equipment to and from a line is obtained.

A system can include a head connector, a stress member connector, and a tail connector. The system can include a first plurality of stress members coupled to the head connector and to the stress member connector. The first plurality of stress members can enter through a first side of the stress member connector. The system can include a second plurality of stress members coupled to the tail connector and to the stress member connector. The second plurality of stress members can exit through a second side of the stress member connector. The second plurality of stress members can be axially nonaligned with the first plurality of stress member connectors.