缅甸D区块钻井复杂情况及处理措施

缅甸D区块在钻井施工过程中遇到了井壁垮塌及掉块现象严重、高陡构造井斜控制难度大、钻井液漏失严重、钻井液安全密度窗口窄等复杂问题,使得该区块钻井效率低下,勘探进度缓慢。为此,采取了一系列有针对性的处理措施,保证了钻井施工的顺利进行,满足了地质勘探方面的要求,并获得了良好的油气发现。

Down-hole problems and corresponding disposal measures in block D of Myanmar

As the geological structure is very complicated, a series of down-hole troublesome conditions have been encountered during the course of drilling operation in block D of Myanmar, for this reason, the drilling operation was in the inefficient state, and the exploration headway was very slow. This article systematically introduction the down-hole troublesome conditions have been encountered in the course of drilling operation in block D of Myanmar, such as serious wellbore collapse, difficult hole inclination control owing to the steep structure, badly drilling fluid lost circulation, limited drilling fluid density safety window and so on. Aiming at the above mentioned down-hole problems, a series of effective measures have been adopted in the course of drilling operation. Thereby the drilling operation in block D of Myanmar was successful, meeting the requirement of exploration and acquiring well oil and gas show.