摘要
Abstract
As one of the development layers in the Da17-70 well block of the Daniudi gas field,the Shan1 layer has a low degree of gas reservoir utilization and large remaining potential.There are also problems such as unclear gas reservoir description,single sand body distribution,and remaining gas recognition.This study analyzed the sedimentary characteristics of the Shan1-3 reservoir,precisely depicted the distribution characteristics of single sand bodies,and established a three-dimensional geological model.The results show that:1)The Shan1-3 submember in the Da17-70 well area is a delta plain deposit with distributary channel and interdistributary bay microfacies,corresponding to five typical GR curves;Shan1-3 is subdivided into Shan1-3-1 and Shan1-3-2 single sand bodies.Shan1-3-1 sand bodies are generally developed with an average thickness of 3.2 m.The overall sand body development of Shan1-3-2 is poor,and the average sand body thickness is 1.8 m.2)Based on the analysis of individual sand bodies and sedimentary facies,a three-dimensional geological model is established and the characteristics of high-yield well reservoirs are analyzed,and the favorable areas of Shan1-3 through optimization are divided.The model is verified by the real drilling track of the horizontal section of the new well.The model has a high coincidence rate with the real drilling lithology,which can optimize the trajectory adjustment of the new well and guide the production plan.关键词
大17-70井区/沉积相/沉积特征/单砂体/三维地质建模Key words
Da17-70 well area/sedimentary facies/sedimentary characteristics/single sand body/three-dimensional geological modeling分类
石油、天然气工程
