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Characteristics of Fault Translocation and Hydrocarbon Migrationin Chengdong Area,Jiyang Depression

LI Ke-cheng,JIANG You-lu,WAN Tao,LIU Kui-yuan,LIU Hua,GUO Fu-xin   

  1. 1.School of Geosciences,China University of Petroleum (East China),Qingdao 266580,China;
    2.Hekou Oil Production Plant,Shengli Oilfield Branch Company,SINOPEC,Dongying 257200,China
  • Received:2013-05-20 Revised:2013-07-01 Online:2014-05-10 Published:2014-05-10

Abstract:

Oil and gas resources are rich in Chengdong area of Jiyang depression.The faults here are closely related with the migration and accumulation of oil and gas.Based on the study of the fault activity,the thermal evolution of source rocks and the migration pathways of the study area,we discussed the fault conduction and hydrocarbon migration feature.The results show that Chennan fault is the sole source fault in this area and its fault activity increases from west to east and the fault active time becomes later along this direction.The Es3 source rocks of Bonan depression are the main hydrocarbon provision layers for Chengdong area and compared with the west part of the sag,the source rocks in the east part are more thermal evolved and have better hydrocarbon provision ability.The match between the fault activity of Chengnan fault and the generation and expulsion history of source rocks control their hydrocarbon migration ability.As the match becomes better,the fault migration ability,the migration amount and the migration distance all increase.The hydrocarbon has a tendency of migrating from the sag to Chenan fault terrace zone and then into Chendong uplift.There are several charging points including Chenggu12,Chenggu13,Chenggu92,etc.and they are usually distributed in the structural ridge,the fault and the structural ridge control the advantageous pathway and migration direction.

Key words: Fault activity, Hydrocarbon transport, Jiyang Depression, Hydrocarbon vertical migration, Source fault

CLC Number: 

  • TE122.3 +3

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