Half rigid casing pipe centralizer

The utility model relates to an oil well well drilling technical field discloses a half rigid casing pipe centralizer, include upper tension ring, lower tension ring, a plurality of whirl strips of parallel arrangement between last lower tension ring, the whirl strip includes bar whirl strip, sets up the arc whirl strip in bar whirl strip both sides, and bar whirl strip both sides all set up the arc whirl strip that the straight line set up that is of two shapes unanimities at least, and arc whirl strip symmetry sets up in bar whirl strip both sides. The utility model discloses casing centralization can not only be makeed, the cementing quality is improved, reduce the casting degree of difficulty, make simply, firmly durable, the effectual displacement efficiency who improves mud, reduce friction, be convenient for go into under the sheathed tube. 本实用新型涉及油井钻井技术领域，公开了种半刚性套管扶正器，包括上箍环、下箍环、平行设置在上下箍环之间的若干旋流条，旋流条包括条形旋流条、设置在条形旋流条两侧的弧形旋流条，条形旋流条两侧均至少设置两个形状致的呈直线设置的弧形旋流条，弧形旋流条对称设置在条形旋流条两侧。本实用新型不仅能使得套管居中，提高固井质量；降低铸造难度；制造