摘要
针对雁木西油田白垩系低阻油层受沉积相带及其断裂、构造和岩性等多种因素综合影响,测井资料分析应用难度增大的特点。采用白垩系岩心和测井资料综合分析,阐述了K1s3、K1s2、K1s1期扇三角洲前缘水下辫状河道到浅水河道有利沉积微相砂体的分布发育,分析了水下辫状河道、浅水河道有利沉积微相带与油气聚集分布的关系。进而,分别采用浅水河道微相控制K1s1期、水下辫状河道控制K1s2、K1s3期储量,利用测井储层参数解释模型和油层有效厚度下限标准,阐明了有利沉积微相带控制计算的储量参数及其分布,有效地圈定了各储量计算单元的含油面积和探明石油地质储量,为该区油藏增储上产和调整挖潜提供了可靠依据。
Aiming at the great difficulty in application of logging information in reservoirs with low resistivity in Yanmuxi oil region, which is caused by the influence of several controlling factors such as sedimentary facies belts, fracture, structure and lithologic, etc, this paper expounds favorable sedimentary microfacies belts and distribution in underwater braided channel in front of fan delta and shallow channel sand body during the periods of Kls3,Kns2,K1S1 on the basis of the core data of Cretaceous and well logging data analysis. The paper analyzed the distribution of underwater braided channel microfacies belts, the favorable sedimentary facies in shallow water channel facies as well as their relationship to reservoir distribution by picking up information of sedimentary energy in single permeability sand bed of Cretaceous in the area. Furthermore, reserves calculation of K1s1 period is controlled by the shallow water channel, and that of K1s2 and K2s3 period is controlled by the underwater braided channel respectively. By using reservoir parameter model obtained by the reservoir log interpretation and the lower limit of the effective thickness of reservoir, the paper also clarified reserves parameters calculated under the control of favorable microfacies belts as well as their distribution, and oil-bearing area and proved oil reserves in place are effectively drawn out, which provides a reliable basis to the reserves and production growing and potential seeking in the area.
出处
《断块油气田》
CAS
北大核心
2010年第1期14-18,共5页
Fault-Block Oil & Gas Field
基金
国家自然科学基金项目"基于核向量机的油藏历史拟合代理模型研究"(40872087)资助
关键词
有利沉积微相带
水下辫状河道微相
浅水河道微相
储量参数
储量分布
雁木西油田
favorable sedimentary＇ microfacies belts, underwater braided channel microfacies, shallow water channel microfacies, parameters of reserves, reserves distribution, Yanmuxi Oilfield.
