辽河滩海地区低阻油气层测井系列的选择

Logging suite selection of the low resistivity hydrocarbon reservoir in the area of Liaohe foreshore

孙娜

Sun Na

中国石油辽河油田勘探开发研究院, 辽宁盘锦 124010

Exploration and Development Research Institute of Liaohe Oilfield Company, PetroChina, Panjin 124010

通过对辽河滩海地区低阻油气层成因机理进行综合分析,表明该地区低阻油气层与盐水泥浆侵入、低构造幅度和高束缚水饱和度等因素有关。这些因素给油气层的识别和评价带来很多困难,经常造成油气层误解释或漏解释。合理的选择测井系列,能够有效的改善测井效果,提高测井解释精度。因此提出了适合滩海地区地质特征的低阻油气层识别及评价的测井系列,即高分辨率阵列感应测井、核磁测井、薄层测井。该套测井系列在太阳岛、葵花岛等油田实际应用中,新增油气层130.7 m/54层,其中13层已得到了试油的证实。该套测井系列提高了油气层的解释精度,具有较好的适用性。

The mechanism of low hydrocarbon reservoir has relations with brine drilling liquid invasion, low structure amplitude and high irreducible water saturation after comprehensive analysis. These factors often cause logging interpretation and evaluation troubles for the hydrocarbon layers. Some oil and gas layers were interpreted by mistake and a few of them were neglected. To select logging suite reasonably can improve the logging data and be helpful to the logging interpretation. An appropriate logging suite including HDIL, MRIL and TBRT log was put up according to the geological features of Liaohe foreshore. Additional 54 oil and gas layers were discovered in the practice of Taiyangdao and Kuihuadao oilfield and 13 layers were con-firmed by oil tests. This method enhanced the well logging interpretation accuracy and has good feasibility.