堵心监视装置的研制

RESEARCH OF CORE BARREL BLOCKAGE ALARM DEVICE

在疏松及破碎砂岩地层取心时,经常会遇到的问题是堵心或卡心,若没有及时发现容易磨心,使资料丢失。为确保取心成功,研制了堵心监视装置,该装置在出现堵 (卡)心时,能及时提醒操作者注意,以便立即采取措施,在岩心被磨损之前将取心工具提离井底。阐述了堵心监视装置的结构、工作原理和现场试验情况,通过试验证实了工具的可行性。建议大面积推广应用。

Core barrel blockage usually occurs in the unconsolidated and broken sand formation coring. If this is not detected in time then the core will be worn out easily, and the data will be lost. To ensure successful coring, the monitor unit has been developed which can warn the operator when the device is blocked by core. As a result, the operator can adopt the measure immediately, and take the coring tool away from bottom hole before the core is worn. The construction and work principle of the monitor device and the field test condition are discussed in this study, and the feasibility of the construction of the unit is confirmed by the field tests. Broad application is suggested.