TK430H水平井钻井技术

TK430H井是塔河油田奥陶系地层的第1口先导性欠平衡水平试验井,设计井深6090m,完钻井深5780m,垂深5420.11m,水平位移484.51m,井斜89.0°,方位251.56°,是目前国内最深的欠平衡水平井。介绍了欠平衡钻井的工艺设计和施工过程,TK430H井实现了边漏边钻,该井的成功完钻,证明了在塔河油田的水平井实施欠平衡钻井是可行的、有效的,为今后开发塔河油田提供了一种新的钻井工艺方法。

Horizontal Well Drilling Technology in TK430H

Well TK430H is the first testing under-balanced well drilled in the Ordovician system of Tahe oilfield, with a designed depth of 6090m, and a real measured drilling depth of 5780m. It is the deepest under-balanced well drilled in China to date, as it has a TVD of 5420.11m, a horizontal displacement of 484.51m, hole inclination of 89.0°, and an azimuth of 251.56°. The under-balanced drilling plan and its field operation is described. This well realized drilling while lost, and it was successfully drilled to bottom, which showed the feasibility of applying under-balanced drilling technology in Tahe oilfield, and provided a new alternative of developing this oilfield.