| 摘要 |
- 40 Abstract Assemblies that can be disposed in a subterranean bore and that can facilitate branch wellbore creation are described. An assembly can include threadedly coupled components having inner and outer sealing members in grooves. The sealing 5 member can cooperate with the components to provide a pressure seal. The assembly can also include a venting member for equalizing pressure in a chamber defined by the coupled components. One of the components can be made from aluminum. At least part of that component can be coated with a coating material that is nonconductive. 29/04/ 1.19220 speci.doc.40 flo fl2 X/Xxx,/' lo xxxxxx/x X x xS xxxx /0 124 XYX Xx X x xx,/X/,x 120 xxx ,X 122 /X X /,Xxxl X, - /, /'Xxxx N M M N N o // 'oo, ,>) O', , //,o /> x / 118 X /N </ 1281, X /I /I VXYX No 0 /1 X 11 zz I </ X /,o X 0 /, X </ </ X/ /,o ZYZ // X%, . YX Zx NO, /0 xxxx Z 'X /Z N X x 'M ell <XN C." Cc> C-C) (NI co~ |
