海安油田袁家断块阜三段储集层宏观非均质性研究

Reservoir heterogeneity of 3^(st) member of Funing Formation in Yuanjia Block,Haian Oilfield

储集层的非均质性对油田注水开发的效果及剩余油的分布影响较大,结合测、录井及剖面测试等资料,从层内、层间、平面3个方面对袁家断块阜三段储集层宏观非均质进行系统研究。结果表明:垂向上表现为较厚的E_1f_3^(1-1)、E_1f_3^(2-4)小层内部发育不同类型的韵律性特征及泥质、钙质2类夹层,导致厚层层内非均质性严重,并在吸水、产液剖面上体现出差异性;层间砂体连通性较好,隔层发育稳定,层间渗透性差异明显。平面上E_1f_3^(2-4)小层岩性变化导致较强的平面非均质性。垂向上砂体的韵律性变化和夹层的发育易形成物性分隔油藏导致的剩余油富集。

The reservoir heterogeneity has a big effect on oilfield water flooding and the distribution of remaining oil. According to thewell logging and profile testing data,the research was conducted from three aspects （inner layer,interlayer and 3stmember of Funing Formation in the Yuanjia Block. The results show that, within the different types of rhythmic characteristics,muddy and calcareous interbeds. This led to the seriousthe differences bet^veen liquid producing profile and water injection profile. The sand of interlayer has a good layers and obvious interlayer permeability difference. In the plane,the lithologic changing of E2f2＂4 gives rise to the stronger areal hetero-geneity. In vertical, physical property separate the reservoir can form the residual oil concentrates owing to the rhythm of sand body and the development of interlayers.