摘要
针对VSP资料层位标定过程中存在的多解性和局限性的问题,提出基于VSP资料的地震层位综合标定方法,具体思路为:1采集VSP资料,包括VSP同步伽马测井资料;2VSP资料处理和质控,确保深度域的VSP走廊叠加剖面与合成记录波组一致;3利用VSP时深关系校正声波时深关系得到更加准确可靠的声波合成记录;4极性确定,绝对振幅显示标定和求取互相关系数,确定标定位置和极性;5VSP走廊叠加和校正后合成记录同时镶嵌于过井地震剖面完成层位标定。该方法用于苏里格南气田,取得了较好的地质效果。
In this paper,we analyze problems in conventional VSP calibration,and propose a new seismic calibration based on VSP data.The steps are as follows:(1)VSP and synchronous gamma-ray logging data acquisition;(2)VSP data processing and quality control to insure the consistence between VSP corridor stack section and synthetic seismogram in the depth domain;(3) Using VSP timedepth relationship corrects acoustic curves and improves synthetic seismogram;(4) Absolute amplitude display calibration and cross-correlation parameter calculation to determine the calibration position and polarity;(5)VSP corridor stack and corrected seismogram embedded at well locations in seismic sections.This approach is used in the exploration and development of South Sulige gas fields,and achieved satisfactory results.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2016年第S1期84-92,7-8,共11页
Oil Geophysical Prospecting
关键词
VSP
合成记录
层位标定
伽马
VSP
synthetic seismogram
horizon calibration
gamma-ray logging
