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Geoscience ›› 2012, Vol. 26 ›› Issue (2): 363-369.

• Energy Geology • Previous Articles     Next Articles

Provenance Analysis of the Second Member of Shahejie Formation in Qikou Sag of Huanghua Depression

 LIU  Qun-Meng-1, WANG  Li-Juan-1, RAO  Liang-Yu-1, WANG  Guo-Ting-1, XIE  Guo-2, LIU  Yi-3   

  1. 1 Research Institute of Petroleum Exploration and Development, PetroChina, Beijing100083, China; 2 No.2 Oil Production Plant, Changqing Oil Field Company, Qingyang, Gansu745100,China; 3 No.4 Oil Production Plant, Dagang Oil Field Company, Tianjin300280, China
  • Received:2011-11-20 Revised:2011-12-20 Online:2012-04-20 Published:2018-09-19

Abstract:

In order to clarify the distributional feature of provenance and depositional systems of the second Member of Shahejie Formation in Qikou Sag, the surrounding provenances and their respective influence scopes on the deposition have been systematically studied by means of multiparameter analysis, such as detrital composition, heavy minerals, rare earth elements. The study indicates each parent rock type is mainly mediumbasic eruptive rock. There are three greater provenances in the study area, which could be divided into six distributary provenances, specifically north Yanshan, northwest Cangxian uplift, west Gangxi salient, west Gangdong salient, Zhaobei and Zhangdong. The distributary provenances of the north Yanshan and northwest Cangxian uplift control most delta deposits of the north part of Beidagang buried hill and Banqiao sag, mixed with west Gangxi salient distributary provenance in the center part of Beidagang buried hill controlling the nearby beach bar deposits. Distributary provenances, specifically Gangxian, Gangdong, Zhaobei and Zhangdong, only control nearby fan deltas and beach bar deposits. In general, the provenance has a good  allocating relationship with the depositional system, which provides a material base for the formation of lithologic stratigraphic reservoir of the second Member of Shahejie Formation.

Key words: Qikou Sag, provenance analysis, detrital composition, heavy mineral