›› 2012, Vol. 33 ›› Issue (5): 1-1.

   

Formation Mechanism and Identification of Oil Bright Spot in Chepaizi Area of Junggar Basin

REN Xincheng1, WANG Rui2a, WEI Xiuping2a, MA Yanjun2b   

  1. (1.Western New Prospect Research Center, Shengli Oilfield Company, Sinopec, Dongying, Shandong 257000, China; 2.PetroChina Xinjiang Oilfield Company, a.Research Institute of Experiment and Detection, b.No.1 Production Plant, Karamay, Xinjiang 834000, China)
  • Online:2019-01-01 Published:1905-07-12

Abstract: High?yielding commercial oil flow was acquired from Well Pai?2 in the Neogene Shawan formation in Chepaizi area of Junggar basin. In seismic profile, since Well Pai?2 oil reservoir has bright spot characteristic, it is called“oil bright spot”. In this paper, the seismic reflection characteristic of such an“oil bright spot”was confirmed by means of forward modeling, and its formation mechanism was defined by analyzing the influence factors of wave impedance changes of the reservoir and its surrounding rocks. And then the oil bright spots were identified by using seismic amplitude attribute description, frequency decomposition and prestack AVO techniques. Three common bright spot pitfalls were also summed up by integrated with the exploration practice for the purpose of improving the success ratio of petroleum exploration in the future

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