Riser system and method of use
View Patent ↗A riser system and method including a bore submerged surface package of valves, a cross over assembly with a high pressure-low pressure connector connected to the bore submerged surface package of valves, a high pressure insert, and a telescoping flow tube. The riser system also include a high pressure bore subsea stack, a low pressure slip joint, a tension ring, a flex joint, a diverter, a mandrel capable of interfacing with the high pressure-low pressure connector, a high pressure mandrel crossover and at least one high pressure insert riser joint, a high pressure-low pressure latch, a telescoping flow tube telescopic conduit, at least one telescoping flow tube latch, a telescoping flow tube low pressure flex joint, a telescoping flow tube main housing, or a rotating control device.
1. A riser system comprising:
a high pressure bore submerged subsea stack;
a high pressure bore submerged surface package of valves;
a high pressure bore open water riser joint connected to the high pressure bore submerged subsea stack and the high pressure bore submerged surface package of valves; and
a crossover assembly with a high pressure-low pressure connector, wherein the crossover assembly is connected to the high pressure bore submerged surface package of valves;
a low pressure slip joint connected to the crossover assembly;
a tension ring connected to the low pressure slip joint;
a flex joint;
a diverter connected to the flex joint;
a high pressure insert; and
a telescoping flow tube wherein the telescoping flow tube further comprises a telescoping flow tube low pressure flex joint;
wherein the high pressure insert and the telescoping flow tube are capable of being lowered into the low pressure slip joint and engaging the high pressure-low pressure connector.
2. The riser system of claim 1 further comprising a frame suspended above a rig floor of the riser system on a draw works.
3. The riser system of claim 2 further comprising a coiled tubing stack or a wireline stack connected to the frame and the high pressure insert.
4. The riser system of claim 1 , wherein the high pressure insert further comprises-a mandrel connected to high pressure-low pressure connector.
5. The riser system of claim 4 , wherein the high pressure insert further comprises a high pressure mandrel crossover.
6. The riser system of claim 4 wherein the mandrel comprises at least one seal.
7. The riser system of claim 4 wherein the mandrel comprises at least one elastomeric seal.
8. The riser system of claim 4 wherein the telescoping flow tube further comprises a latch.
9. The riser system of claim 1 , where the telescoping flow tube further comprises-a telescoping flow tube low pressure telescoping conduit.
10. The riser system of claim 1 , wherein the telescoping flow tube further comprises at least one telescoping flow tube latch.
11. The riser system of claim 1 wherein the telescoping flow tube further comprises a telescoping flow tube main housing.
12. The riser system of claim 11 further comprising a rotating control device in the telescoping flow tube main housing.
13. A method of installing a riser system that comprises the steps of:
(a) connecting a high pressure bore submerged surface package of valves to a high pressure bore open water riser joint;
(b) connecting the high pressure open water riser joint to a high pressure bore submerged subsea stack;
(c) connecting the high pressure bore submerged surface package of valves to a crossover assembly with a high pressure-low pressure connector;
(d) connecting a low pressure slip joint to the crossover assembly; and
(e) connecting a telescoping flow tube through the low pressure slip joint and engaging the high pressure-low pressure connector, wherein the telescoping flow tube further comprises a telescoping flow tube low pressure flex joint.
14. The method of claim 13 that further comprises the steps of:
(f) disconnecting the telescoping flow tube; and
(g) connecting a high pressure insert through the low pressure slip joint and engaging the high pressure-low pressure connector.