large-hole drilling 中文意思是什麼

large-hole drilling 解釋
大口徑鉆進
  • large : adj 1 （體積，空間，數量，規模等）大的，巨大的；（權限等）廣泛的。2 （心胸）寬廣的，度量大的；（...
  • hole : n 1 洞，穴，孔；（衣服等上的）破洞；傷口；漏洞；窩，坑；水流的深凹處，（河道的）緩流窪。2 （獸的...
  • drilling : n 1 鉆孔；【礦物】鉆井；〈pl 〉鉆屑，鉆粉。2 操練，訓練。n 【農業】條播。 ridge [furrow] drilling...
  1. Different drilling fluid systems have been used in the horizontal well drilling in north tarim area, more specifically, polymer drilling fluid is used in the top hole of large size, and polysulfide drilling fluid for the lower interval ; for the building section and horizontal interval, polysulfide drilling fluid mixed with oil is used

    塔北地區水平井上部大井眼採用聚合物鉆井液體系、下部井段採用聚磺鉆井液體系、造斜段及水平段採用聚磺混油鉆井液體系。
  2. An approach to the cause of failure of large diameter long - hole drilling tools

    大直徑深孔鉆具失效原因探討
  3. Field using indicates that the polymer drilling fluid is suitable for the large size hole because of its remarkable cuttings removal ability ; and polysulfide drilling fluid shows its strong inhibition, anti - sloughing and good cuttings transportation ; while for polysulfide drilling fluid mixed with oil, it has better cuttings removal, suspension and lubricity, which are desirable for horizontal drilling

    現場應用結果表明，聚合物鉆井液體系解決了大井眼攜巖問題；聚磺鉆井液體系抑制能力、防塌能力、攜巖能力強；聚磺混油鉆井液體系的攜帶、懸浮巖屑能力及潤滑性更好。
  4. Abstract : this paper made an approach to the form and cause of the failure of large diameter long - hole rock drilling tools in anqing copper mine and put forward some ways for extending the service life of rock drilling tools in the light of its practical use

    文摘:文章主要就安慶銅礦大直徑深孔鑿巖鉆具的失效形式和原因進行了探討，並從鉆具使用角度出發提出了提高鑿巖鉆具使用壽命的途徑。
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