低勘探地区构造深度预测精度研究  

Study on prediction accuracy of structural depth in low exploration area

作　　者：周士博 Zhou Shibo(SINOPEC Research Institute of Petroleum Geophysical Technology Co.,LTD.,Nanjing 211103)

机构地区：[1]中国石化石油物探技术研究院有限公司,江苏南京211103

出　　处：《石化技术》2024年第8期203-205,共3页Petrochemical Industry Technology

摘　　要：深度预测是油气勘探成功与否的重要基础条件,油田对都深度预测的误差要求往往比较严格。现实条件中受井少、地震速度精度低、速度模型难建立等现实问题影响,物探工作者很难保证构造误差的精度。通过对某区风险探井中出现的深度误差的原因的剖析,思考了构造趋势分析、井速度的应用、速度模型的建立方法及模型质控分析等环节对减少构造误差的作用。同时进一步讨论不同程度的低勘探地区降低深度预测误差的方案。速度模型的足够精准前提下,要接受不同勘探程度和实际条件的带来的构造误差。Depth prediction is an important basic condition for oil and gas exploration results,and the error requirement of oil field depth prediction is often strict.It is difficult for geophysical exploration workers to guarantee the accuracy of structural errors due to the few Wells,the low accuracy of seismic velocity and the difficulty in establishing velocity models.This paper analyzes the causes of depth errors in a risky exploration well in a certain area,and considers the effects of structural trend analysis,well velocity application,velocity model building method and model quality control analysis on reducing structural errors.At the same time,the scheme of reducing depth prediction error in different degree of low exploration areas is further discussed.On the premise that the velocity model is accurate enough,it must accept the structural errors brought by different exploration degrees and actual conditions.

关 键 词：速度模型 深度预测 构造误差 低勘探地区 

分 类 号：P618.13[天文地球—矿床学] P631.4[天文地球—地质学]