K油田开发中的砂体成像及油藏描述

K油田位于哈萨克斯坦南图尔盖盆地阿克赛隆起带上,主要产层为白垩系底砂岩及侏罗系河道砂。油田区南北跨度较大,油藏类型多样,砂体边界识别困难。该油田在2000年之后逐步投入开发,但在开发过程中发现相邻井的出油情况差异较大,油水关系复杂,油田需要提高对油藏的识别精度来应对新一轮增储上产及井网调整问题。利用敏感属性分析、3D可视化模块、地质统计反演等技术,重新认识和评价了K区油藏特征,识别区内多个独立油藏,厘清油藏间的油水关系,总结该区不同油藏类型的含油气规律,就目前困扰K油田勘探开发工作的问题给出解答。

Sand Identification and Reservoir Description for K Oil Field Development

K oil field is located at Akesay host in Southern Turgay Basin and its main reservoir is Cretaceous delta sand and Jurassic Channel sand. K oil field has a long distance straddle from North to South with varied reservoir type and obscure sand margin. After 2000, the K oil field entered development stage, and many problems like big different oil produce rate between nearby wells, complex oil-water contact （OWC） and other confused things need to resolve. The oil filed must enhance their resolution of sand imaging to cope with requests of oil production increased and well pattern adjustment. In this study, suitable technique like sensitive attribute analysis, 3D visualization module and geostatistic inversion are used to rethink and revaluate the reservoir of K oil field. At a result, research team found more independent sand body, make OWC clearly and achieved hydrocarbon rules of different reservoir, then give conclusions to answer the confused question during oil developed.