地质力学学报
地質力學學報
지질역학학보
JOURNAL OF GEOMECHANICS
2014年
4期
446-454
,共9页
孙祥飞%陈勇%王成军%王鑫涛
孫祥飛%陳勇%王成軍%王鑫濤
손상비%진용%왕성군%왕흠도
东营凹陷%盐底辟构造%膏盐脱水作用
東營凹陷%鹽底闢構造%膏鹽脫水作用
동영요함%염저벽구조%고염탈수작용
Dongying sag%salt diapir%salt-gypsum dehydration
基于国内外已经取得的盐构造研究成果,根据东营凹陷盐构造的发育特征,指出流体在盐构造发育过程的重要作用。东营凹陷沙四段含有大量膏盐和含膏地层,根据岩心、测井和地震等资料分析了东营凹陷盐构造特征。由于膏盐脱水作用会导致地层内部产生异常高压,而异常高压可以作为动力迫使流体向上流动继而在上覆地层产生水压力裂缝,流体上涌过程中可以带动盐类物质向上运动,因此认为膏盐脱水对盐构造形成发育有重要作用。基于膏盐脱水和超压流体作用,建立了东营凹陷沙四段盐底辟构造发展史模型,分析了东营凹陷盐构造在流体作用下形成发育过程,结果表明膏盐脱水在盐构造发育初期和中期具有重要作用。
基于國內外已經取得的鹽構造研究成果,根據東營凹陷鹽構造的髮育特徵,指齣流體在鹽構造髮育過程的重要作用。東營凹陷沙四段含有大量膏鹽和含膏地層,根據巖心、測井和地震等資料分析瞭東營凹陷鹽構造特徵。由于膏鹽脫水作用會導緻地層內部產生異常高壓,而異常高壓可以作為動力迫使流體嚮上流動繼而在上覆地層產生水壓力裂縫,流體上湧過程中可以帶動鹽類物質嚮上運動,因此認為膏鹽脫水對鹽構造形成髮育有重要作用。基于膏鹽脫水和超壓流體作用,建立瞭東營凹陷沙四段鹽底闢構造髮展史模型,分析瞭東營凹陷鹽構造在流體作用下形成髮育過程,結果錶明膏鹽脫水在鹽構造髮育初期和中期具有重要作用。
기우국내외이경취득적염구조연구성과,근거동영요함염구조적발육특정,지출류체재염구조발육과정적중요작용。동영요함사사단함유대량고염화함고지층,근거암심、측정화지진등자료분석료동영요함염구조특정。유우고염탈수작용회도치지층내부산생이상고압,이이상고압가이작위동력박사류체향상류동계이재상복지층산생수압력렬봉,류체상용과정중가이대동염류물질향상운동,인차인위고염탈수대염구조형성발육유중요작용。기우고염탈수화초압류체작용,건립료동영요함사사단염저벽구조발전사모형,분석료동영요함염구조재류체작용하형성발육과정,결과표명고염탈수재염구조발육초기화중기구유중요작용。
There is a series of achievements about salt tectonics both at home and abroad. This paper points out that fluid in the tectonics development of the important role of salt, which is based on previous studies and the developmental characteristics of salt tectonics in Dongying sag. It contains a lot of salt?gypsum and salt?gypsum formations. This paper analyzes the characteristic of the salt tectonics according to the core, logging and seismic data. Abnormal high pressure created by salt?gypsum dehydration in stratum, high pressure can be used as a dynamic force fluid flow upward and this contributes to hydraulic fracturing in the overlying strata and can drive the salts material in the process of fluid upwelling upward movement. This paper proposes that salt?gypsum dehydration has an important influence on the formation of the salt tectonics. Based on the effect of salt?gypsum dehydration and overpressure fluid, the history of model of member 4 of Shahejie Formation salt diapir in Dongying sag is established according to seismic cross?section and logging data. Salt tectonics is analyzed during the migration of fluids in the process of development, salt?gypsum dehydration effect in early and mid?salt tectonic development important role.