Milling and catching device

• Main Authors: CASAZZA JUAN, DURAND BENOIT JEAN YVES, KIM GEORGE, FELIU RENATO, WETHENBORN REBECCA K, WURTZ JOHN
• Format: Patent
• Language: Chinese; English
• Published: 23.06.2023
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

A milling system may be used to remove a portion of a faulty valve that blocks a wellbore. When milling a partially open valve that blocks a wellbore, the target material to be removed may not be present at the central axis of the wellbore, resulting in the target material not completely surrounding the milling bit, which may cause the bit to deviate from the target during milling, thereby decreasing milling efficiency. The disclosed milling system can be used to mill and capture samples of any downhole obstructions that are free of any material near the central axis of the wellbore. A first embodiment of the milling system may be configured to fully mill material in a wellbore, while a second embodiment may be used to mill material in a wellbore and further capture the milled material or sample. 一种铣削系统可用于移除堵塞井眼的故障阀的部分。当铣削堵塞井眼的部分打开的阀时，待移除的目标材料可能不存在于井眼的中心轴线处，导致目标材料不完全包围铣削钻头，这可能导致钻头在铣削过程中偏离目标，从而降低铣削效率。所公开的铣削系统可用于铣削和捕捉任何井下阻塞物的试样，所述井下阻塞物在井眼的中心轴线附近没有任何材料。铣削系统的第一实施例可被构造成完全铣削出井眼中的材料，而第二实施例可用于铣削出井眼中的材料并进一步捕捉铣削后的材料或试样