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为了防止孔斜，目前野外队根据勘探区地层的各向异性和地层倾斜情况，设计选用各种不同形式的孔底钻具组。孔底钻具组往往装有一个、二个、甚至多个扶正器。孔底钻具组与孔壁的接触即在扶正器处，扶正器在使用中易损坏，以往常采用在扶正器外表面堆焊铸造碳化钨或镶焊几条硬质合金来提高它的耐磨性，实践表明，均不理想。为此，我们试用603厂研制的GH焊条堆焊在扶正器外表面，经生产试验，效果良好，现将情况简介如下。
In order to prevent the hole oblique, the current field team based on the exploration area formation anisotropy and stratigraphic tilt, design and use of various forms of hole bottom hole assembly. Bottom hole drilling tools often contain one, two, or even more centralizers. Hole bottom hole group contact with the hole wall that is at the centralizer, centralizer easy to use in use, the past often used in the centralizer surface cast tungsten carbide or inlaid welding a few cemented carbide to improve its resistance Abrasion, practice shows that are not ideal. To this end, we try to develop 603 factory developed GH electrode surfacing on the centralizer surface, the production test, the effect is good, the situation is summarized as follows.