Systems and methods for initiating an emergency disconnect sequence (EDS) are provided. In an aspect, a disconnection system is provided and configured to initiate the EDS, and includes a controller including a processor and a memory operably coupled to the processor. The controller receives, from a set of motion reference units (MRU(s)) operably coupled to a flexible joint, position data generated by the set of motion references units and associated with the joint when the joint is operably coupled to and disposed between a drilling riser and a lower marine riser package (LMRP). The controller determines, based on the position data, an angular offset of the joint. The controller sends, to a subsea control pod disposed at or adjacent to the LMRP, a trigger signal in response to determining that the angular offset exceeds a predetermined threshold, such that the subsea control pod initiates the EDS.

Systems and processes for subsea marine managed pressure operations. One system includes a modified riser joint configured to fluidly connect inline with one or more riser joints. The modified riser joint and the one or more riser joints are connected to form a riser connecting a floating vessel with a wellhead. The system further includes a subsea pressure management sub-system configured to be operatively and fluidly connected to the modified riser joint at a subsea location.

Systems and processes for subsea marine managed pressure operations. One system includes a modified riser joint configured to fluidly connect inline with one or more riser joints. The modified riser joint and the one or more riser joints are connected to form a riser connecting a floating vessel with a wellhead. The system further includes a subsea pressure management sub-system configured to be operatively and fluidly connected to the modified riser joint at a subsea location.

A system has a riser and a termination body, the termination body being arranged to connect at least one first conduit arranged along the riser and at least one second conduit extending from the riser to a drilling rig, where the termination body has a first clamp body and a second clamp body arranged for mutual joining and radial enclosure of a portion of the riser, and at least one receptacle block for connecting the at least first conduit, where the portion of the riser is unsplit. A method for connecting the termination body to the riser is also disclosed.

A system has a riser and a termination body, the termination body being arranged to connect at least one first conduit arranged along the riser and at least one second conduit extending from the riser to a drilling rig, where the termination body has a first clamp body and a second clamp body arranged for mutual joining and radial enclosure of a portion of the riser, and at least one receptacle block for connecting the at least first conduit, where the portion of the riser is unsplit. A method for connecting the termination body to the riser is also disclosed.

The invention concerns a bend stiffener (10, 32) for locally protecting an elongate flexible member (14) from excessive curvature when the elongate flexible member is deployed in water. The bend stiffener comprises an elongate stiffener body (34) which has a root end, a free end, and a passage (36) extending through the stiffener body from the root end to the free end for receiving and embracing the flexible member. A coupling (16) at or toward the root end of the stiffener body serves to mount the stiffener body. The stiffener body is sufficiently flexible to curve somewhat along with the flexible member when the flexible member suffers a bending load and carries a sensor module which is located proximate the free end of the bend stiffener and is configured to sense inclination and/or orientation and/or movement of the free end of the bend stiffener.

The present invention relates to a riser system in the form of a pumped riser (1), i.e. a riser (1) having an outlet (6) from the riser (1) at a depth below the surface (S) of a body of water, where the outlet (6) is coupled to a return pump (7) to return fluid from the riser (1) to the surface (S), and various operational methods to facilitate greater versatility when performing hydrocarbon drilling related operations. The arrangement also comprises a sealing element (15, 16) to seal an annulus (5) of the riser (1), and a by-pass (17) around the sealing element (15, 16). Various methods makes it possible to switch between open mode and closed mode, and vice versa, monitoring leakage across the sealing element (15, 16), as well as performing other operations exploiting the advantages of the two different modes.

The present invention relates to a riser system in the form of a pumped riser (1), i.e. a riser (1) having an outlet (6) from the riser (1) at a depth below the surface (S) of a body of water, where the outlet (6) is coupled to a return pump (7) to return fluid from the riser (1) to the surface (S), and various operational methods to facilitate greater versatility when performing hydrocarbon drilling related operations. The arrangement also comprises a sealing element (15, 16) to seal an annulus (5) of the riser (1), and a by-pass (17) around the sealing element (15, 16). Various methods makes it possible to switch between open mode and closed mode, and vice versa, monitoring leakage across the sealing element (15, 16), as well as performing other operations exploiting the advantages of the two different modes.

A control system automatically operates a subsea well control device on detecting that a load in an Intervention Riser System (IRS) coupled to the subsea well control device has reached a threshold. The control system has a first control unit to detect that the load in the IRS has reached the threshold and a second control unit triggering actuation of the subsea well control device. The first control unit is in communication with the second control unit and issues an activation command to the second control unit to cause it to trigger actuation of the subsea well control device. The first control unit automatically issues the activation command to the second control unit upon detecting that the load in the IRS has reached the threshold, to trigger actuation of the subsea well control device prior to structural failure of an IRS.

A control system automatically operates a subsea well control device on detecting that a load in an Intervention Riser System (IRS) coupled to the subsea well control device has reached a threshold. The control system has a first control unit to detect that the load in the IRS has reached the threshold and a second control unit triggering actuation of the subsea well control device. The first control unit is in communication with the second control unit and issues an activation command to the second control unit to cause it to trigger actuation of the subsea well control device. The first control unit automatically issues the activation command to the second control unit upon detecting that the load in the IRS has reached the threshold, to trigger actuation of the subsea well control device prior to structural failure of an IRS.