华北探区复杂地表区表层调查方法探讨  

A Discussion on Surface Investigating Methods in Complicated Surface Area in Huabei Exploration Area

作　　者：袁胜辉 孙毅 陈国胜 孙志伦 李彦国 

机构地区：[1]中国石油东方地球物理公司华北经理部,河北省任丘市062552 [2]中国石油华北油田分公司油藏评价部,河北省任丘市062552

出　　处：《中国石油勘探》2008年第2期63-66,共4页China Petroleum Exploration

摘　　要：华北油田的二连盆地和冀中地区勘探程度较高,大多构造油气藏已被发现并落实。随着油气勘探的深入,目前已进入岩性地层油气藏勘探阶段。但是冀中地区由于人为改造严重,近地表存在潜水面漏斗现象;二连探区地表类型多样,山前冲积扇叠置,存在速度反转现象,导致表层结构异常复杂。复杂的表层对激发参数的设计带来严峻挑战,同时导致复杂的静校正问题。2003—2004年应用复杂区小折射观测系统的快速优选,深井微测井调查技术、因地制宜的表层调查方式优选技术;基于表层动力学特征的调查技术等,基本搞清了二连盆地和冀中地区复杂的表层结构特征和表层动力学特征,为后续的逐点设计激发参数改善激发效果和提高静校正精度,提供了准确的基础资料。The exploration degree is high in Erlian Basin and Jizhong area in Huabei Oilfield,and most structural hydrocarbon reservoirs have been discovered and implemented.Now the exploration has been conducted in subtle lithologic and stratigraphic oil and gas reservoirs.However,the lowering of water table exists in the near-surface area,due to the over exploitation in Jizhong area.The Erlian exploration area features in diversifying surface types and overlaid piedmont alluvial fans.There is a phenomenon of velocity reversal in the area.So the surface structure is extremely complicated here. As a result,the design of shooting parameters gets more difficult because of the complicated surface structure,as well as the static corrections get more complicated.The observation system with shallower refraction in complex area was rapidly selected during 2003 and 2004.Besides,the deep well micro logging surveying technique,the optimal selection technique based on the surface investigating method,and the surveying technique based on the surface dynamics features were applied.So the surface structural features and the surface dynamics features were generally identified in Erlian Basin and Jizhong area.It provides exact data for the improvement of shooting effect and precision of static corrections in subsequent roll-along design of shooting parameters.

关 键 词：华北探区 表层结构 激发岩性 双井微测井 

分 类 号：P631.82[天文地球—地质矿产勘探]