钻头是什么

<swan-text selectable="true" class=" text-selectable " style="-webkit-tap-highlight-color: transparent; user-select: text; color: rgb(0, 0, 0); font-family: "STHeiti SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 18px; background-color: rgb(255, 255, 255);">在钻井过程中钻头是破碎岩石的主要工具，井眼是由钻头破碎岩石而形成的。一个井眼形成得好坏，所用时间的长短，除与所钻地层岩石的特性和钻头本身的性能有关外，更与钻头和地层之间的相互匹配程度有关</swan-text><sw-1076 id="_1815dc1a4d6125" style="-webkit-tap-highlight-color: transparent; color: rgb(0, 0, 0); font-family: "STHeiti SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 18px; background-color: rgb(255, 255, 255);"><swan-text class=" sw-1076__lemma-reference sw-1076__lemma-ref-1 sw-1076__swan-spider-tap " id="_1815dc1a4d6127" style="-webkit-tap-highlight-color: transparent; color: rgb(153, 153, 153); font-size: 13px; padding: 2px 1px 8px 5px; line-height: 1; vertical-align: 4px; word-break: break-word;">[1]</swan-text></sw-1076><swan-text selectable="true" class=" text-selectable " style="-webkit-tap-highlight-color: transparent; user-select: text; color: rgb(0, 0, 0); font-family: "STHeiti SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 18px; background-color: rgb(255, 255, 255);">。钻头的合理选型对提高钻进速度、降低钻井综合成本起着重要作用。</swan-text>