西南石油大学学报(自然科学版) ›› 2017, Vol. 39 ›› Issue (3): 34-46.DOI: 10.11885/j.issn.1674-5086.2017.01.10.03

Previous Articles     Next Articles

Multi-parameter Analysis of Identifying Micro Amplitude Structures by Moving Trend Surface Method

WU Yong1,2, MA Teng2, WANG Yu3, ZHOU Lu1,2, ZHOU Yadong4   

  1. 1. State Key Laboratory of Oil Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
    2. School of Geosciences and Technology, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
    3. Development Department, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China;
    4. Expolratin and Development Research Institute, Tuha Oilfield Company, PetroChina, Hami, Xinjiang 839009, China
  • Received:2017-01-10 Online:2017-06-01 Published:2017-06-01

Abstract: The Qiketai Formation is located in the Pubei Region of the Turpan-Hami Basin. Within the formation, microamplitude structures (MAS) form a favorable tectonic zone for hydrocarbon accumulation. Presently, the resolution of seismic data limits seismic interpretation technologies, making them unable to satisfy the requirements for fine-grained identification of MAS. As an alternative, the moving trend surface method, was used in this study to repeatedly test and analyze MAS. The preferred selection methods for three critical parameters-number of fits, sampling interval, and radius of influence-were also comprehensively studied. After quadratic fitting was selected, the optimal combination of parameters for MAS identification using the moving trend surface method were found to be:(i) the sampling interval for the maximum degree of fit, and (ii) a radius of influence that was two times the sampling interval. These findings were useful for optimizing parameters for MAS identification in the Pubei Region. MAS were found to be mainly distributed along the axis of the nose-shaped tectonic setting and the northeastern slope. Their distributional characteristics were in agreement with the results found during drilling of the hydrocarbon areas.

Key words: Turpan-Hami Basin, Pubei Region, Qiketai Formation, micro-relief structures, moving trend surface, parameter analysis

CLC Number: