Xinjiang Petroleum Geology

Xinjiang Petroleum Geology ›› 2004, Vol. 25 ›› Issue (6): 624-627.

Previous Articles     Next Articles

Correlation of Downhole Triassic Strata in Southern Tu-Ha Basin

WANG Yu-shan1, XU Chang-jie2, HUANG Wei-dong3, NIU Zhi-jie3, WANG Tian-peng3, ZHAO Sheng-bin3, NI Lian-bin3   

  1. 1. Jianghan Petroleum Institute, Jingzhou, Hubei 434 102, China;
    2. Production Plant of Jianghan Oilfield, Sinopec, Qianjiang,Hubei 433124, China;
    3. Tu-Ha Oilfield Company, PetroChina, Hami, Xinjiang 839009, China
  • Received:2004-03-08 Published:2021-01-14

PDF

153

Abstract: Triassic system is a major sequence for petroleum exploration in Tu-Ha basin. Since 1996, the Triassic pay zone in Lukeqin area has been classified into Karamay formation of Middle Triassic from Late Triassic. In this paper, the Middle Triassic payzone is reclassified back to. original Late Triassic,based on the view point that continental basin structure and climate cyclic changes could control the sequence strati-graphic formations, integrated with the seismic, drilling and well log information as well as analysis of lateral changes of regional strata. Also, the reclassification is supported by inherent mechanism of the well log responses and recognition of the regional unconformity in Xiaoquangou group as a natural dividing line betw een Middle Triassic and Upper Triassic in southern Tu-Ha basin.

Key words: Tu-Ha basin, Triassic, strata correlation, self-potential, resistivity

CLC Number: