10-11-2010 дата публикации
Номер: CN0101881156A
Автор:
ZHIJIAN YANG,
GUANGXIN WANG,
ZHIGUANG YANG,
JUESUAN YANG,
YUHAI LI,
YUTANG GU,
CUN FAN,
FUXIANG GUO,
PING YAO,
HAIMIAO WANG,
YANG ZHIJIAN,
WANG GUANGXIN,
YANG ZHIGUANG,
YANG JUESUAN,
LI YUHAI,
GU YUTANG,
FAN CUN,
GUO FUXIANG,
YAO PING,
WANG HAIMIAO
Принадлежит:
The invention relates to a primary measurement shell for a measurement while-drilling instrument. The primary measurement shell comprises a short joint body, a buckling cover and a conductive ring; the short joint body is uniformly milled with alternated convex walls along the circumferential direction, concave walls are formed among the convex walls, step grooves are milled on the concave walls, the buckling cover is fixed on the step grooves, closed instrument compartments are preformed at the combination part of the buckling cover and the short joint body, an axial routing hole is drilled on a shoulder at a male buckle end of the short joint body, a routing through hole is drilled between the instrument compartments, a conductive ring slot is lathed on the shoulder surface at the male buckle end of the short joint body, the conductive ring is placed in the conductive ring slot, and a routing hole is drilled in the conductive ring slot; and the routing hole, the routing through hole and ...
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