红外光谱气体录井随钻评价技术  

Infrared sepctrum gas logging evaluation while drlling technology

作　　者：陈玉蓉 陈勇 赵天东 郭琼 柴晓武 CHEN Yurong;CHEN Yong;ZHAO Tiandong;GUO Qiong;CHAI Xiaowu(No.1 Mud Logging Company,BHDC,CNPC,Tianjin 300280,China)

机构地区：[1]中国石油渤海钻探第一录井公司

出　　处：《录井工程》2024年第3期11-18,共8页Mud Logging Engineering

基　　金：中国石油渤海钻探工程有限公司重大科研类项目“录井随钻分析评价系统及现场作业支撑平台研发”子课题“红外光谱录井仪研制”(编号:2024ZD07F-01)。

摘　　要：近年来随着非常规油气藏的开发,油气勘探复杂程度显著上升,地下流体关系愈发复杂,增大了快速、准确评价地层流体,发现薄层、裂缝型、弱显示油气层的难度,为勘探开发提供决策依据的需求更加紧迫。针对复杂储层薄互层识别困难、非常规油气流体性质判识困难等难点,开展了基于气体分子光谱原理的红外光谱录井特色技术研究。该项技术分析周期≤8 s,在快速钻井条件下不易漏失油气层,特别是在油气水层随钻流体评价、裂缝型/薄层油气藏识别及储层精细划分与界线卡取方面更具技术优势。基于红外光谱气体录井技术,建立了储层能级谱图评价模型和储层流体性质评价标准,并在井场实际应用中取得较好效果,有效解决了在快速钻井条件下储层流体识别评价的难题。With the development of unconventional reservoirs in recent years,the complexities of oil and gas exploration have risen significantly,and subsurface fluid relations have become more and more complex.The demand for rapid and accurate evaluation of formation fluids,discovery of thin,fracture-type,and weakly show of oil and gas layers,and provision of decision-making basis for exploration and development has become more urgent.Aiming at the difficulties of identifying thin interlayers in complex reservoirs and recognizing the nature of unconventional oil and gas fluids,we have carried out research on infrared spectrum logging featured technology based on the spectroscopic principle of gas molecular.This technology has an analysis period of≤8 s,and is not easy to leak oil and gas layers under rapid drilling conditions.In particular,it has more technical advantages in fluid evaluation of oil,gas and water layers while drilling,identification of fractured/thin hydrocarbon reservoirs,fine classfication of reservoirs and boundary determination.Based on the infrared spectrum gas logging technology,the reservoir energy level spectrogram evaluation model and the evaluation standard of reservoir fluid properties are established.The practical application of this method in the well site has achieved good results and effectively solved the problem of reservoir fluid identification and evaluation under rapid drilling conditions.

关 键 词：红外光谱录井技术 气测录井 录井评价 吸收率 光谱体积 标准吸收率 

分 类 号：TE132.1[石油与天然气工程—油气勘探]