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发明名称
WELL STRUCTURE
摘要
申请公布号
JPH01271598(A)
申请公布日期
1989.10.30
申请号
JP19880283546
申请日期
1988.11.09
申请人
CAMERON IRON WORKS INC
发明人
PIITAA BURIIZU
分类号
E21B33/064;E21B;E21B19/16;E21B33/038;F16L35/00
主分类号
E21B33/064
代理机构
代理人
主权项
地址
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