{"id":1453,"date":"2025-08-07T14:04:23","date_gmt":"2025-08-07T06:04:23","guid":{"rendered":"https:\/\/www.apiepiling.com\/?p=1453"},"modified":"2025-08-07T14:17:24","modified_gmt":"2025-08-07T06:17:24","slug":"understanding-kelly-bar-types-in-rotary-drilling-rigs","status":"publish","type":"post","link":"https:\/\/www.apiepiling.com\/pt\/understanding-kelly-bar-types-in-rotary-drilling-rigs\/","title":{"rendered":"Understanding Kelly Bar Types in Rotary Drilling Rigs"},"content":{"rendered":"

1. What Is a Kelly Bar?<\/span><\/h3>\n

A Kelly bar<\/strong> is a key component of a rotary drilling rig, used to transmit torque and crowd force from the rig\u2019s rotary drive to the drilling tool. It enables the rig to reach deep drilling depths while maintaining high torque.<\/span><\/p>\n

2. Types of Kelly Bars<\/span><\/h3>\n

? Interlocking Kelly Bar<\/span><\/h4>\n
    \n
  • \n

    Provides high torque transmission<\/span><\/p>\n<\/li>\n

  • \n

    Ideal for hard soil and rock layers<\/strong><\/span><\/p>\n<\/li>\n

  • \n

    Better vertical rigidity and depth control<\/span><\/p>\n<\/li>\n<\/ul>\n

    ? Friction Kelly Bar<\/span><\/h4>\n
      \n
    • \n

      Lighter and more economical<\/span><\/p>\n<\/li>\n

    • \n

      Suitable for soft to medium soil<\/strong><\/span><\/p>\n<\/li>\n

    • \n

      Faster drilling speed<\/span><\/p>\n<\/li>\n<\/ul>\n

      3. Common Specifications<\/span><\/h3>\n
      \n
      \n\n\n\n\n\n\n
      Tipo<\/span><\/th>\nSections<\/span><\/th>\nMax Drilling Depth<\/span><\/th>\nTorque Capacity<\/span><\/th>\n<\/tr>\n<\/thead>\n
      Interlocking<\/span><\/td>\n3\u20136<\/span><\/td>\nUp to 90 m<\/span><\/td>\nHigh<\/span><\/td>\n<\/tr>\n
      Friction<\/span><\/td>\n3\u20135<\/span><\/td>\nUp to 60 m<\/span><\/td>\nMedium<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
      \n
      <\/div>\n<\/div>\n<\/div>\n<\/div>\n

      4. Application Scenarios<\/span><\/h3>\n
        \n
      • \n

        High-rise building foundations<\/span><\/p>\n<\/li>\n

      • \n

        Bridge pile foundations<\/span><\/p>\n<\/li>\n

      • \n

        Infrastructure and civil engineering projects<\/span><\/p>\n<\/li>\n<\/ul>\n

        5. Maintenance Tips<\/span><\/h3>\n
          \n
        • \n

          Lubricate locking mechanisms regularly<\/span><\/p>\n<\/li>\n

        • \n

          Avoid over-torqueing in rocky ground<\/span><\/p>\n<\/li>\n

        • \n

          Inspect for wear at section joints<\/span><\/p>\n<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

          1. What Is a Kelly Bar? A Kelly bar is a key component of a rotary drilling rig, used to transmit torque and crowd force from the rig\u2019s rotary drive to the drilling tool. It enables the rig to reach deep drilling depths while maintaining high torque. 2. Types of Kelly Bars ? Interlocking Kelly […]<\/p>","protected":false},"author":4,"featured_media":1454,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[254],"tags":[244,371,372,447,448,449,450,451],"acf":[],"_links":{"self":[{"href":"https:\/\/www.apiepiling.com\/pt\/wp-json\/wp\/v2\/posts\/1453"}],"collection":[{"href":"https:\/\/www.apiepiling.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.apiepiling.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.apiepiling.com\/pt\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.apiepiling.com\/pt\/wp-json\/wp\/v2\/comments?post=1453"}],"version-history":[{"count":0,"href":"https:\/\/www.apiepiling.com\/pt\/wp-json\/wp\/v2\/posts\/1453\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.apiepiling.com\/pt\/wp-json\/wp\/v2\/media\/1454"}],"wp:attachment":[{"href":"https:\/\/www.apiepiling.com\/pt\/wp-json\/wp\/v2\/media?parent=1453"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.apiepiling.com\/pt\/wp-json\/wp\/v2\/categories?post=1453"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.apiepiling.com\/pt\/wp-json\/wp\/v2\/tags?post=1453"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}