利用电缆地层测试资料精确计算储层产能的新方法  

A NEW ACCURATE CALCULATION METHOD OF RESERVOIR PRODUCTION BY USING WIRELINE FOR MATION TEST DATA

作　　者：孟悦新[1] 李相方[1] 杜辉[1] 隋秀香[1] 

机构地区：[1]中国石油大学石油工程教育部重点实验室

出　　处：《钻采工艺》2010年第6期64-67,共4页Drilling & Production Technology

基　　金：国家863项目"油气层钻井中途测试仪工程化集成与应用"(No.2006AA090101);国家自然科学基金资助项目"凝析气藏相变渗流机理及其试井方法研究"(No.50974128)

摘　　要：利用泵抽式电缆地层测试资料对储层进行产能预测时,对结果影响较大的两个因素分别是近井地带的污染和测井渗透率的刻度方法。文章通过综合分析储层的渗透率、孔隙度、含水饱和度和泥质含量等测井数据,按照沉积微相特征在垂向上对储层进行精细划分,并在此基础上使用经过校正的电缆地层测试渗透率对测井渗透率进行逐点刻度并直接用于计算各小层的产量,最后通过数值积分的方法获得储层的总产能。该方法消除了近井污染的影响,避免对测井渗透率平均化使用的弊端,从而提高产能预测精度。文章提出的新方法通过新型国产泵抽式电缆地层测试器ERCT在某海上油田产能评价中的成功应用得到了验证。Pollution in the near wellbore zone and calibration method of the logging permeability are two significant factors to affect the prediction result of reservoir production by using pumpout wireline formation test data.Finely dividing the whole formation into numerous minor layers vertically based on comprehensive analysis of the sedimentary microfacies characteristics,include logging permeability,porosity,water saturation and shaliness.This paper presented a new method to calibrate the logging permeability with wireline formation testing permeability in each logging interval,calculated the production of every minor layer directly,and achieved the total production of the reservoir finally by using numerical integration algorithm.This method eliminated the influence of the pollution in the near wellbore zone,avoided the problem of using logging permeability averagely,thereby raised the precision of the prediction result.The new method has been applied successfully to predict the reservoir production in one offshore oilfield by using the test data of a new pumpout wireline formation tester(ERCT)made in China,the results showed the validity of the method presented in this paper.

关 键 词：电缆地层测试 储层细分 渗透率刻度 数值积分 产能预测 

分 类 号：P618.13[天文地球—矿床学]