鄂尔多斯盆地TBM气田下二叠统低渗透储层测井解释模型建立及气、水层识别

ESTABLISHMENT OF WELL LOGGING INTERPRETED MODEL AND IDENTIFICATION OF GAS OR WATER LAYERS OF UPPER PALEOZOIC LOW PENETRATIVE RESERVOIRS OF TBM OILFIELD IN ORDOS BASIN

TBM气田位于鄂尔多斯盆地北部伊陕斜坡带 ,区内主要含气层系为下二叠统山西组山一段以及下石盒子组盒一段。根据岩心分析结果统计 ,该地区属中 -低孔、低 -特低渗地层。在充分研究该地区最新测试分析等资料基础上 ,通过储层“四性”关系研究 ,建立油藏地质特性与测井响应特征的映射关系 ,确定测井储层参数转换模型 ,划分渗透性地层 ,计算反映储集层基本特性的地质参数 ;并以测井解释成果为基础 ,以试气证实的气层、水层及干层为标准 ,建立气层、水层及干层的测井模式 ,制作测井参数图版 ,采用地质、测井、气测相结合的方式 ,逐层逐井对未试气的储层重新进行气层。

The TBM oilfield is located in the northern Yishan slope of Ordos basin. Its main gas bearing formations are lower Shihezi Formation and Shanxi Formation. According to the statistical results of cores analysis, the reservoirs belong to middle low porosity and low further low permeability. Based on a through research by the later examination and depending on the relation research of four characters, the authors rebuild the mapping between the reservoir geology characters and well logging response, decide the conversion model of reservoir parameters of well logging, divide permeable reservoirs, and calculate the geological parameters reflecting the basic reservoir characters. Based on the standard of gas, water or empty layers, the authors set up well logging model of gas layer, water layer or empty layer. Then the authors make up plate of well logging parameters, combined geology, well logging, gas test, and so on. At last, the authors identify the untested layers.