塔里木巴什托油气田巴楚组顶部油气层录井特征分析

详细分析了巴什托油气田BK2、BK3H、BK4H以及BK5H等6口井的地质录井资料,显示巴楚组顶部油气层自上而下见到的含油气级别一般为油斑、油迹、气测异常等,上好下差,油气主要集中于顶部油气层之顶上,反映出油气向上运移储集比较好。巴楚组及以上地层纵、横向上的稳定性较好,深度、厚度均变化不大,且以M4井为中心向各方向均呈现增厚—减薄有规律的交替变化。巴什托油气田巴楚组油藏具有较好的开采价值,但还应不断钻探寻找新的含油气构造,发现新的油气田。

Analysis of Logging Caracteristics of Lower Permian Bachu Top Oil Reservoir in Bashituo Oil Field, Tarim Basin

A detailed analysis of the geological logging data from Wells BK2,BK3H,BK4H and BK5H and other 2 wells shows that the hydrocarbon showings generally are oil slicks,oil trace,gas gas-log anomaly in rank from the upper to the lower of the Lower Permian Bachu top oil reservoir in Bashituo Field. Quality of hydrocarbon is better in the upper than in the lower. Hydrocarbon is commonly concentrated in the top part of the top reservoir,which implies hydrocarbon migrating upwards and accumulating. Bachu Formation and the layers above it are well stable in vertical and horizontal for no obvious change in depth and thickness,and show a change of regular thickening or thinning alternation in every directions around Well M4 as a center. It is indicated that Bachu reservoir is worthy for exploitation.