Free standing steel catenary risers

1. An offshore riser system comprising:

a tubular from a sea floor to a sea surface comprising:

a first portion at the sea floor, wherein the first portion is a horizontal portion;

a second portion near the sea surface, wherein the second portion is a vertical portion; and

a third portion located between the first and second portions, wherein the third portion is a curved portion;

a buoyancy module connected to the second portion, adapted to maintain a shape of the third portion and enable a connection of a host vessel to the second portion;

the host vessel directly connected to the second portion; and

wherein the buoyancy module is capable of being disconnected from the second portion after the connection of the host vessel to the second portion.

2. The system of claim 1 , further comprising:

an anchor cable connected to the third portion and to an anchoring mechanism on the sea floor.

3. The system of claim 1 , wherein the host vessel comprises a spar, a semisub, an FPSO, or a TLP.

4. The system of claim 1 , further comprising:

at least one of a subsea well and a subsea manifold connected to the first portion.

5. A method of installing an offshore riser system comprising:

laying a first portion of a tubular on a sea floor, wherein the first portion is a horizontal portion;

connecting a second portion of the tubular to a flotation module at or near a sea surface, wherein the second portion is a vertical portion;

forming a third portion between the first portion and the second portion, wherein the third portion is a curved portion;

connecting the second portion directly to a floating host vessel; and

disconnecting the flotation module from the second portion.

6. The method of claim 5 , further comprising anchoring the third portion to the sea floor.

7. The method of claim 5 , wherein the flotation module comprises at least one of a buoyancy can and a foam.