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发明公开
CN109025880A 一种适用于海底绳索取心钻机的沉积物取心钻进工艺 有权 转让

一种适用于海底绳索取心钻机的沉积物取心钻进工艺
摘要：
本发明公开了一种适用于海底绳索取心钻机的沉积物取心钻进工艺，其包括以下步骤：1）下钻；2）纯压入抽吸取心钻进；3）单动旋转压入抽吸取心钻进；4）拔心；5）打捞岩心内管；6）扫孔；7）加杆前冲孔；8）下放岩心管；9）加接钻杆；10）加杆后冲孔；11）重复步骤2）‑10），直到钻进取心至给定孔深；12）回收钻杆及绳索取心外管钻具；13）回收海底绳索取心钻机。本发明适用于海底沉积物无泥浆润滑与护壁的钻进取心工况；而且具有低扰动、高取心率的优点，能够更好地适用于远程遥控作业方式。
摘要（英）：

The invention discloses a deposit sediment core drilling process suitable for a seabed rope core drilling machine. The process comprises the following steps: 1) drilling down; 2) pure press-in suctiontype core drilling; 3) single action rotary press-in suction type core drilling; 4) core pulling; 5) rock core inner tube salvaging; 6) hole sweeping; 7) hole punching before rod adding; 8) rock coretube lowering; 9) drill rod adding; 10) hole punching after rod adding; 11) a step of repeating steps 2) to 10) until the core is drilled to given hole depth; 12) a step of recovering the drill rod and a rope core drilling outer tube drill tube; 13) a step of recovering the seabed rope core drilling machine. The deposit sediment core drilling process is suitable for a core drilling working condition where seabed deposit sediments are free from slurry lubrication and retaining walls; the deposit sediment core drilling process is advantaged by low disturbance and high coring rates, and the deposit sediment core drilling process can be suitable for remote control work modes.

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