深海水下采油树结构和强度计算_秦蕊.pdf

29 2 V l. 29 N . 2 2011 5 THE OCEAN ENGINEERING May 2011 : 1005-9865( 2011) 02-0025-07 1 1 2 3 1 秦 蕊 , 罗晓兰 , 李清平, 张 怡, 段梦兰 ( 1. ( ) , 102249; 2. , 100027; 3. , 518067) : , ABAQUS , : , H4 , H4 , , , , : ; ; ABAQUS ; ; : P751 : A Calculati n f the verall strength f christmas tree in the deep water 1 1 2 3 1 QIN Rui , LUO Xia-lan , LI Qing-ping , ZHANG Yi , DUAN Meng-lan ( 1. Offsh re Oil Gas Research Center, China University f Petr leum, Beijing 102249, China; 2. CNOOC Research Institute, Beijing 100027, China; 3. CNOOC Energy Techn l gy Services-Oilfield C nstructi n Engineering C . in Shengzhen, Shengzhen 518067, China) Abstract:The verall strength f a subsea X-tree has t be checked in different perating c nditi ns which are cl sely related with water depth, il gas temperature, etc. By using theABAQUS s ftware, a finite element m del f r a subsea X-tree perating in an il field f 300m waters in S uth China Sea is devel ped and the verall structural strength analysis is perf rmed. The numerical results sh w that the restraining c nditi ns ( b undary effects) f the subsea guide base and H4 c nnect r, etc. have great influences n the integrated stresses f the X-tree. It is stressed that the water- riented base and H4 c nnect r sh uld be specially designed t meet the requirements f the verall strength f the subsea tree by minimizing the b undary effects n the Christmas tree, and the c mbined acti n f the b undary effects and the external f rce