Title:
SQUARE PILE CONSTRUCTION METHOD AND DEVICE FOR ROTARY DRILLING RIG
Document Type and Number:
WIPO Patent Application WO/2022/095548
Kind Code:
A1
Abstract:
The present invention relates to the technical field of engineering construction, and in particular relates to a square pile construction method and device for a rotary drilling rig. The specific technical solution comprises the square pile construction method for a rotary drilling rig; and said construction method comprises the steps of leveling a site, measuring and setting out, using a concrete retaining wall at a wellhead, putting the drilling rig in place, performing vertical adjustment on the drilling rig; drilling a pilot hole, drilling double holes, drilling a square hole, clearing holes with a round drill, and clearing holes with a square drill. The present invention provides a novel square pile construction method for a rotary drilling rig, and can perform square pile construction by using a device throughout the whole process, effectively reducing downhole operations of operators, and avoiding the risk of safe production of projects from the source. The present invention also provides three square pile drill bits and a square pile cleaning drill in cooperation with the square pile construction method, and further achieves the whole process mechanization of square pile construction.
Inventors:
ZHEN BIAO (CN)
ZHEN JIE (CN)
LI CHANGWEI (CN)
ZHEN JIE (CN)
LI CHANGWEI (CN)
Application Number:
PCT/CN2021/113784
Publication Date:
May 12, 2022
Filing Date:
August 20, 2021
Export Citation:
Assignee:
CHENGDU XINHAO FOUND ENGINEERING CO LTD (CN)
International Classes:
E02D5/34; E21B7/00; E21B27/00
Foreign References:
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Attorney, Agent or Firm:
SICHUAN HENGHE XIN LAW FIRM (CN)
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