哈德逊油田HD4井区东河砂岩储层特征

Reservoir Characteristics of Donghe Sandstone in Well HD4 of Hudson Oilfield

摘要: HDD油田4井区位于哈得逊油田西南部，由于多年的勘探开发，区块内已经做了很多研究工作，但是随着开采进度的进行，目前区块内属于高含水阶段，储层受非均质性的影响较为严重，随着开采进度的不断推进，新的问题也在不断出现。为了进一步实现高产，还需对储层特征进行更为深入的研究。结合岩心、常规物性分析实验数据、测井等资料，对区块岩性、物性、非均质性等展开研究，制定了储层综合评价标准，分析得出HD-4井属于中孔、中高渗I类储层，储集能力好，整体在纵向上非均质程度比较严重。识别出该区域把隔夹层分为两类：一是非渗透性夹层，包括泥质夹层以及钙质夹层；二是渗透性夹层，研究区内大多数是致密砂岩夹层。

Abstract: 4 wellblock HDD oilfield is located in the southwestern Hudson oilfield, due to many years of ex-ploration and development, a lot of research work has been done in blocks, but with the progress of the mining, within the current block belongs to the high water cut stage, the affection by the heterogeneity of the reservoir is relatively serious, with the advancement of mining progress, new problems appear constantly. In order to achieve higher production, further research on reservoir characteristics is needed. Combining the core, conventional physical property analysis experimental data, well logging and other data, the lithology, physical property and heterogeneity of the block were studied, and the comprehensive evaluation standard of the reservoir was formulated. The analysis concluded that Well HD-4 belongs to the medium-porosity, medium-high permeability I type reservoir, with good reservoir capacity, and the overall degree of vertical heterogeneity is more serious. This region can be divided into two categories: one is non-permeable intercalation, including argillaceous intercalation and calcareous intercalation; the second is permeable intercalation, most of which are tight sandstone intercalation.