西南石油大学学报(自然科学版)

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The Structural Control Effect on Petroleum Accumulation Elements in#br# Southern Apennine Region

LI Quan1*, DU Xiangdong1, KANG Hongquan1, LI Jinbo2, XIA Shiqiang3   

  1. 1. Overseas Evaluation Center,CNOOC Research Institute,Chaoyang,Beijing 100028,China
    2. International Exploration Department,CNOOC,Dongcheng,Beijing 100010,China
    3. School of Energy Resources,China University of Geosciences,Haidian,Beijing 100083,China
  • Online:2016-04-11 Published:2016-04-11

Abstract:

The complex structural condition in the Southern Apennine region of Italy results in poor seismic imaging quality,
great difficulty in defining traps,and unclear character of petroleum entrapment. We believe that the structural evolution controls
the distribution of high quality source rocks. The stable structural environment plays a constructive role in the development of
source rocks. The intense structural evolution plays an inhibition role in the distribution and development of source rocks. The
structural belt controls the type of reservoirs,traps and the distribution pattern. The primary reservoir in the thrust fold belt
is Cretaceous carbonatite;the primary reservoir in the internal foredeep belt is turbidite sandstones of Pliocene–Pleistocene;
the primary reservoir in the external foredeep belt is Pliocene turbidite sandstones and Miocene carbonatite,and the primary
reservoir in the forebulge belt is Miocene–Cretaceous carbonatite. The structural paleogeography controls the distribution of
petroleum systems. During the syn-rift stage in Mesozoic,the distribution pattern of paleo-uplift and depression controlled the
oil and associated gas. During the collision stage in Cenozoic,the rapid subsidence of foredeep belt controlled the thermorgenic
gas system. The biogas system migrated outward gradually along with the migration of depocenter in foreland basin during
Quaternary.

Key words: structural belt, petroleum entrapment elements, structural paleogeography, foreland Bbasin, southern Apennine
region

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