胡尖山延安组油藏古地貌恢复及再认识.pdf

工程与施工

工程与施工

胡尖山延安组油藏古地貌恢复及再认识

宋佳伟，肖飞，黄延明，廖雄飞，吴頔，吉少文，葛政廷，陈峻

(长庆油田分公司第六采油厂，陕西榆林718600)

摘要：由于胡尖山侏罗系延安组油藏的古地貌认识不清，不能全面掌握延安组油藏的分布及成藏规律，导致井位部署后

部分采油井无工业油流或低于预期的产能，因此文章通过地震预测法、残余厚度法和印模法综合对比分析，并与以前恢

复的古地貌对比，实现地质特征再认识。其研究表明，印模法恢复古地貌更加准确，通过印模法恢复的古地貌和早期恢

复的古地貌对比，得到在蒙陕古河东西侧郝滩地区的古地貌与之前恢复的古地貌存在较大差异，由此为下步井位部署

提供了地质依据。

关键词：延安组；胡尖山地区；古地貌恢复；鄂尔多斯盆地

中图分类号：TE34文献标志码：A文章编号：1008-4800(2024)33-0161-04

DOI:10.19900/ki.ISSN1008-4800.2024.33.039

PalaeogeomorphologyRestorationandRe-understandingofYan’an

FormationOilReservoirinHujianshan

SONGJiawei,XIAOFei,HUANGYanming,LIAOXiongfei,WUDi,JIShaowen,GEZhengting,CHENJun

(OilProductionPlant6ofPetroChinaChangqingOilfielCompany,Yulin718600,China)

Abstract:DuetotheunclearunderstandingofthepaleogeomorphologyofthejurassicYan’anformationoilreservoirinHujianshan,

thedistributionandaccumulationlawoftheYan’anformationoilreservoircannotbefullygrasped,resultinginnoindustrialoilflow

orlowerthanexpectedproductioncapacityinsomeoilwellsafterwelllocationdeployment.Therefore,thispapercomprehensively

comparesandanalyzestheseismicpredictionmethod,residualthicknessmethodandimpressionmethod,andcomparesthemwith

thepreviouslyrestoredpaleogeomorphologytorealizethere-understandingofgeologicalcharacteristics.Theresearchshowsthatthe

impressionmethodismoreaccurate.Bycomparingthepaleogeomorphologyrestoredbytheimpressionmethodwiththepreviously

restoredpaleogeomorphology,thereisabigdifferencebetweenthepaleogeomorphologyintheHaotanareaontheeastandwest

sidesoftheMongolianandShaanxiancientriversandthepreviouslyrestoredpaleogeomorphology,whichprovidesageological

basisforthenextwell