Surface multiple well

Abstract

An offshore oil production system, comprising a structure in a body of water, having a portion extending above a surface of the body of water; a surface wellhead located at a top of the body of water; a first wellhead located at a bottom of the body of water; a second wellhead located at a bottom of the body of water; a first riser extending from the first wellhead to the surface wellhead; and a second riser extending from the second wellhead to the surface wellhead.

1 . An offshore oil production system, comprising:
 a structure in a body of water, having a portion extending above a surface of the body of water;   a surface wellhead located at a top of the body of water;   a first wellhead located at a bottom of the body of water;   a second wellhead located at a bottom of the body of water;   a first riser extending from the first wellhead to the surface wellhead; and   a second riser extending from the second wellhead to the surface wellhead.   
     
     
         2 . The system of  claim 1 , further comprising a first wellbore extending further into a subsea formation beneath the body of water and beneath the first wellhead, and further comprising a second wellbore extending further into the subsea formation beneath the body of water and beneath the second wellhead. 
     
     
         3 . The system of  claim 2 , further comprising a production tubing within each of the first wellbore and the second wellbore. 
     
     
         4 . The system of  claim 3 , wherein each production tubing extends from first wellbore and the second wellbore to the surface wellhead. 
     
     
         5 . The system of  claim 1 , further comprising an outer riser extending from the surface wellhead at least a portion of the distance towards the first and second wellheads, the first riser and the second riser located within the outer riser. 
     
     
         6 . The system of  claim 5 , wherein the outer riser comprises at least one divider to separate the riser into at least two regions. 
     
     
         7 . The system of  claim 2 , wherein the first wellbore further comprises a casing string. 
     
     
         8 . The system of  claim 1 , wherein the surface wellhead comprises at least two surface trees. 
     
     
         9 . The system of  claim 1 , wherein the structure comprises a tension leg platform. 
     
     
         10 . The system of  claim 1 , wherein the structure comprises a spar platform.