靖边气田水平井地质导向方法与应用

Horizontal Well Geosteering Technology and Its Application in Development of Jingbian Gasfield

水平井开发是油气增产、提高开发效益的一项重要技术,而地质导向技术对水平井的成功实施起到关键作用。通过对靖边气田龙平1井实行水平井技术开发(该气田的首口水平井),总结出水平井的"三优"方法一体化地质导向方法。所谓"三优"方法,一是水平井井位优选方法,保证水平井构造落实、储层落实和产能落实,尽可能降低水平井实施风险;二是水平井地质设计优化方法,以标志层K1构造为基础,以马五1储层各小层地层厚度和有效厚度为依据,建立水平井三维精细地质模型,保证水平井地质设计的可靠性;三是地质目标跟踪分析优化方法,以钻遇太原组灰岩、本溪组9#煤层和下古生界奥陶系顶等标志层为依据,及时调整入靶位置,并结合地质建模综合分析,预测后续靶点位置。龙平1井实行水平井"三优"一体化技术开发后获得高产气流。

Horizontal well development is an important technology for increasing production and improving development benefit. The horizontal well geosteering technology includes： the optimization of well sites which guarantees that construct of horizontal wells, reservoir beds and off-take potential are all substantive, so as to reduce the horizontal well performance risk; the optimization of horizontal well track design, to predict accurately target points and the following target points based on the K1 construct, the stratum thickness and effective thickness of Majiagou team mbrs, the construct of K2 and the top of the Ordoviclan, and stratum thickness and dip angle, so as to ensure the security of track design;the optimization of geological orientation tracking analysis, to insure targeting according to the coal bed and the top of the Ordovician drill-met, and to forecast the following target points by combining debris, drilling times, gas survey, GR along with drilling, stratum thickness and dip angle. The application in the Lpl well achieved high production after acidification.