小断块油藏水平井轨迹钻探设计

TRAJECTORY DESIGN OF HORIZONTAL WELL IN THE SMALL BLOCK RESERVOIR

小断块油藏水平井目标点的不确定性 ,比一般油藏更为突出。通过稳斜探标志层 ,或稳斜探油顶来确定目标点垂深的方法 ,在小断块油藏水平井中经常不可行 ,此时钻导眼来确定目标点垂深成为必要。介绍了稳斜探标志层和油顶的稳斜角设计方法 ,主要介绍了在钻导眼确定目标点垂深时 ,水平井导眼轨迹和水平井轨迹综合设计方法 。

The target uncertainty of horizontal well in the small block reservoir is more outstanding than in the common reservoir.The way is no good,which confirms the target's vertical depth through finding the oil top or the mark layer by the steady inclination angle section.So,it is necessary to confirm the target's vertical depth by drilling leading-hole.The paper simply introduces the design method of the steady inclination angle by which finding the oil top or the mark layer,mainly discusses the integrate design method of horizontal well trajectory and the leading-hole trajectory in confirming the target's vertical depth by drilling leading-hole,and gives the example.