摘要
某油田为背斜背景下的构造、岩性双重控制油藏,以快速沉降、快速充填为特征。在岩心分析数据和试油试采资料的基础上,从岩性、物性、含油性等角度分析储层特点,指出高粘土束缚水和高毛细管束缚水是造成该油田储集层低电阻率的直接原因。针对不同类别的储集层采用不同的评价标准对储集层进行分类。利用双水模型计算含水饱和度,采用最优化解释技术计算矿物体积含量,综合利用多条曲线特征分析和计算储层参数,并用岩心分析和试油资料来校正评价模型和参数。综合应用自然电位曲线、井径曲线识别因异常高压带、采油造成的压力亏空,以准确判别产层。
The oilfield is the combination of structural oil reservoir and lithologic oil reservoir, which is characterized by quick sediment and packing. The rapid sedimentation rate caused the fine grain size, high thickness, low texture maturity, the rapid change rate of sedimentary phase, difficult fluid discharge, seriously inhomogeneous, poor continuity laterally, and several oil-water system with high pressure. All the above characters result in low resistivity oil zones and complex pressure system, which make it difficult to identify oil zones. Based on the core analysis data and the testing data, the characters of reservoir are analyzed in lithology, petrophysical properties and oiliness. Proposed is that the genesis of low resistivity oil zones are high clay-bounded water saturation and high capillary irreducible water saturation. The different reservoirs categorized are evaluated by different criterions. Based on the reservoir characteristics, the dual-water model is used to obtain water saturation and irreducible water saturation. The reservoir parameters （such as mineral volume content etc. ） are derived from logs and analyzed using maximum optimization methods. The interpretation model and parameters are also corrected by core analysis and well testing results. For the abnormal high pressure zones, SP and caliper data are applied to interpret the pressure depletion problems caused by production and the problems in the oil-gas zone evaluation, and then recommending production from the separate zones.
出处
《测井技术》
CAS
CSCD
2008年第2期186-190,共5页
Well Logging Technology
关键词
测井评价
快速沉积
储集层
含水饱和度
束缚水
低电阻率
压力亏空
log evaluation, quick sedimentation, reservoir, water saturation, irreducible water,low resistivity, pressure depletion
