水平井优化设计中油藏地质因素的分析

水平井井身剖面的优化设计不仅应从钻井工艺和力学角度分析，而且也需从油藏地质条件出发进行考虑，本文根据塞平１井的设计施工实际，并结合国内外有关水平井资料综合论述了地质因素诸如油气藏开发地质类型、油层厚度，产层几何形态及储层非均质性等对水平井井眼轨迹优化设计的影响，分析了确定水平井段方位取向、水平段长度、水平段垂深和入靶点位置、初始造斜点位置选择以及井眼直径大小等参数的原则、方法，以达到地质—工程的统一．

Analysis of Reservoir Geological Factors in Horizontal Well Optimizing Design

Not only drilling technology and mechanical factors,but olso reservoir geological factors should be taken into consideration in horizontal well hole trajectory optimizing design.According to the practice of Saiping 1 horizontal well design and the domestric and overseas information concerning horizontal well.This paper discusses the effect of geological factors,such as geological type ,pay thickness,the geometric shape of payzone,reservoir non uniformity,etc.on the horizontal well hole trajectory optimizing design,and analyses the principle and the method of determing the parameters such as the azimuth,length and vertical depth of horizontal section,the positions of targeted point and primary kickoff point,hole size,etc.in order to reach unanimity of geological conditions with drilling engineering.