Riser gas handling system

Abstract

A system including a modular riser gas handling system configured to couple to and be disposed vertically below a telescoping joint, wherein the modular riser gas handling system includes a diverter assembly configured to couple to and divert a flow of material into and out of a riser, and an annular blow out preventer (BOP) assembly configured to couple to the diverter assembly.

1 . A riser package for use on a rig, comprising:
 a rotating control device coupled below a telescopic joint and having a rotating seal operable to sealingly engage a tubular string disposed through the riser package;   an annular sealing device coupled below the rotating control device, wherein the annular sealing device is operable to close off the entire flow bore of the annular sealing device to prevent fluid from flowing up through a flow bore of the riser package past the annular sealing device;   a flow control device coupled below the annular sealing device and having one or more first control lines that provide fluid communication between the flow control device and a control system located on the rig, wherein the flow control device is operable to divert fluid flowing up through the flow bore of the riser package to the control system located on the rig via the first control lines;   a riser string coupled below the flow control device; and   a blow out preventer coupled below the riser string and having one or more second control lines that provide fluid communication between the blow out preventer and equipment located on the rig.   
     
     
         2 . The riser package of  claim 1 , wherein the annular sealing device comprises a sealing element and a piston for forcing the sealing element into a closed position to close off the entire flow bore of the annular sealing device. 
     
     
         3 . The riser package of  claim 2 , further comprising an accumulator disposed adjacent to the annular sealing device for supplying hydraulic fluid to actuate the piston. 
     
     
         4 . The riser package of  claim 2 , wherein the flow control device comprises a central flow bore and a lateral flow bore that intersects the central flow bore for diverting fluid flow from the flow bore of the riser package to the control system. 
     
     
         5 . The riser package of  claim 4 , further comprising a hydraulically actuated valve for opening and closing fluid flow between the lateral flow bore and a control line that provides fluid communication to the control system. 
     
     
         6 . The riser package of  claim 1 , wherein the annular sealing device is operable to sealingly engage the tubular string disposed through the riser package, wherein the annular sealing device comprises a non-rotating sealing element to sealingly engage the tubular string; and
 wherein the flow control device is operable to divert fluid flow from an annulus formed between an outer surface of the tubular string and an inner surface of the riser package to the control system located on the rig.   
     
     
         7 . The riser package of  claim 6 , wherein the annular sealing device comprises a hydraulically actuated piston operable to force the sealing element into engagement with the tubular string. 
     
     
         8 . The riser package of  claim 6 , wherein the flow control device comprises a central flow bore and a lateral flow bore that intersects the central flow bore for diverting fluid flow from the annulus to the control system. 
     
     
         9 . The riser package of  claim 8 , further comprising a hydraulically actuated valve for opening and closing fluid flow between the lateral flow bore and a control line that provides fluid communication to the control system. 
     
     
         10 . The riser package of  claim 1 , further comprising a tensioned slip ring coupled to the telescopic joint and disposed above the rotating control device. 
     
     
         11 . The riser package of  claim 1 , wherein the second control lines are coupled to a flanged connection of at least one of the rotating control device, the annular sealing device, and the flow control device. 
     
     
         12 . The riser package of  claim 1 , wherein the control system located on the rig is configured to reduce the pressure of fluid from the first control lines, separate the fluid from the first control lines into one or more components, or direct the fluid from the first control lines over port or starboard sides of the rig. 
     
     
         13 . A method of handling fluid flow through a riser package that is supported by a rig, comprising:
 providing a rotating control device coupled below a telescopic joint and having a rotating seal operable to sealingly engage a tubular string disposed through the riser package;   providing an annular sealing device operable to close off the entire flow bore of the annular sealing device to prevent fluid from flowing up through a flow bore of the riser package past the annular sealing device, wherein the annular sealing device is coupled below the rotating control device;   providing a flow control device operable to divert fluid flowing up through the flow bore of the riser package to a control system located on the rig via one or more first control lines that provide fluid communication between the flow control device and the control system, wherein the flow control device is coupled below the annular sealing device; and   providing a blow out preventer coupled below the riser package and having one or more second control lines that provide fluid communication between the blow out preventer and equipment located on the rig.   
     
     
         14 . The method of  claim 13 , wherein the annular sealing device comprises a sealing element and a piston operable to force the sealing element into a position to completely close off fluid flow through the flow bore of the annular sealing device. 
     
     
         15 . The method of  claim 13 , wherein the flow control device comprises a hydraulically actuated valve operable to open and close fluid flow between the flow control device and the control system. 
     
     
         16 . The method of  claim 13 , wherein the annular sealing device comprises a non-rotating sealing element to sealingly engage the tubular string, and wherein the flow control device is operable to divert fluid flow from an annulus formed between an outer surface of the tubular string and an inner surface of the riser package to the control system located on the rig. 
     
     
         17 . The method of  claim 16 , wherein the flow control device comprises a hydraulically actuated valve operable to open and close fluid flow between the flow control device and the control system. 
     
     
         18 . The method of  claim 13 , further comprising coupling a tensioned slip ring to the telescopic joint at a position above the rotating control device. 
     
     
         19 . A method of installing a riser package for use on a rig, comprising:
 lowering a riser string through a first tubular handling device located on the rig floor;   moving the riser string out of alignment with the first tubular handling device while supporting the riser string using a second tubular handling device located below the first tubular handling device;   moving a fluid control system into alignment with and below the first tubular handling system;   supporting the fluid control system using the first tubular handling system;   moving the riser string back into alignment with the first tubular handling system;   connecting the fluid control system to the riser string;   supporting the fluid control system and the riser string using the first tubular handling device; and   lowering the fluid control system and the riser string to an operating position.   
     
     
         20 . The method of  claim 19 , wherein the second tubular handling device comprises a spider disposed on a trolley located in a moon pool area below the rig floor. 
     
     
         21 . The method of  claim 20 , further comprising moving the second tubular handling device into engagement with the riser string using the trolley to support the riser string using the second tubular handling device. 
     
     
         22 . The method of  claim 21 , further comprising connecting the fluid control system to a telescopic joint that is supported by the first tubular handling device, then moving the riser string back into alignment with the first tubular handling device, and then connecting the fluid control system to the riser string. 
     
     
         23 . The riser package of  claim 1 , wherein the riser package comprises a modular riser gas handling system having the rotating control device as a first modular unit, the annular sealing device as a second modular unit, and the flow control device as a third modular unit removably coupled together. 
     
     
         24 . The riser package of  claim 23 , wherein the annular sealing device comprises an annular blow out preventer (BOP) and the flow control device comprises a diverter assembly. 
     
     
         25 . The riser package of  claim 23 , wherein each of the first, second, and third modular units comprises one or more lines extending between opposite flanges of the respective modular unit, wherein adjacent pairs of the first, second, and third modular units are configured to removably couple together at adjacent pairs of the flanges and adjacent pairs of the one or more lines. 
     
     
         26 . The method of  claim 13 , comprising handling the fluid flow with a modular riser gas handling system having the rotating control device as a first modular unit, the annular sealing device as a second modular unit, and the flow control device as a third modular unit. 
     
     
         27 . The method of  claim 26 , wherein each of the first, second, and third modular units comprises one or more lines extending between opposite flanges of the respective modular unit, wherein adjacent pairs of the first, second, and third modular units are configured to removably couple together at adjacent pairs of the flanges and adjacent pairs of the one or more lines. 
     
     
         28 . The method of  claim 19 , comprising removably coupling together a modular riser gas handling system having a rotating control device as a first modular unit, an annular sealing device as a second modular unit, and a flow control device as a third modular unit. 
     
     
         29 . The method of  claim 28 , wherein each of the first, second, and third modular units comprises one or more lines extending between opposite flanges of the respective modular unit, wherein adjacent pairs of the first, second, and third modular units are configured to removably couple together at adjacent pairs of the flanges and adjacent pairs of the one or more lines. 
     
     
         30 . A system, comprising:
 a modular riser gas handling system configured to couple to and be disposed vertically below a telescoping joint, wherein the modular riser gas handling system comprises at least two modular units selected from:
 a first modular unit comprising a rotating control unit; 
 a second modular unit comprising an annular blow out preventer (BOP); or 
 a third modular unit comprising a diverter assembly.