摘要
储层的有效性是储层储集能力和渗滤流体能力的综合反映。储层有效性评价既包括确立影响储层有效性的因素,也包含对储层有效性进行探测的技术手段和方法。测井技术是目前储层有效性评价精度最高的一种技术手段。致密砂岩储层有效性评价的核心问题是裂缝的识别与有效性评价,在各向异性大的地层仅依靠电成像与常规测井技术的裂缝评价可能存在偏差。针对塔里木盆地某致密砂岩储层,以斯通利波渗透率、反射系数等斯通利波裂缝特征参数为主,同电成像测井、元素俘获谱(ECS,elemental capture spectroscopy)测井提取的裂缝特征参数一起,建立了该区致密砂岩储层等级划分的定量方法。通过工区实际应用结果表明,该方法预测精度较高。
The reservoir effectiveness was a synthetical reflection of reserving ability and fluid filtration capability.The reservoir effectiveness evaluation included the determination of factors influencing the reservoir effectiveness and techniques and methods used for detecting the effectiveness.The evaluation also includes detection technology and means.Up to now,well logging technology was a technical way for the effectiveness evaluation with the highest accuracy.The core of tight sandstone reservoir evaluation was fracture discrimination and effectiveness evaluation.There existed errors if only depended on conventional logging and electric imaging logging for well logging in the strata with high anisotropy.A quantitative method is established for distinguishing the grade of tight sandstone reservoirs in Tarim Basin by using the characteristic parameters of stoneley wave permeability,reflection coefficient,the parameters derived from electric imaging logging and ECS logging.Application indicates that the method is high prediction accuracy.
出处
《石油天然气学报》
CAS
CSCD
2013年第6期79-85,7,共7页
Journal of Oil and Gas Technology
基金
油气资源与探测国家重点实验室开放课题基金项目(00480080)
关键词
斯通利波
致密砂岩
储层有效性
裂缝评价
Stoneley wave
tight sandstone
reservoir effectiveness
fracture evaluation
