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Horizon Classification of Red-Brown Sandy Mudstone Interval in Middle Jurassic on the Southern Slope of Mosuowan Swell(PDF)

《新疆石油地质》[ISSN:1001-3873/CN:65-1107/TE]

Issue:
2017年06期
Page:
643-
Research Field:
Publishing date:

Info

Title:
Horizon Classification of Red-Brown Sandy Mudstone Interval in Middle Jurassic on the Southern Slope of Mosuowan Swell
Author(s):
SONG Yong12 HOU Gangfu3 SONG Mingxing2 JIA Kaifu2 WANG Shili2 LI Yongguang2 WANG Feng2
(1.School of Geoscience and Technology, Southwest Petroleum University, Chengdu, Sichuan 610500, China; 2.Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China; 3.Hangzhou Research Institute of Geology, PetroChina, Hangzhou, Zhejiang 310023, China)
Keywords:
Mosuowan swell unconformity surface red-brown sandy mudstone interval horizon classification Toutunhe formation underwater distributary channel
PACS:
TE111.3
DOI:
10.7657/XJPG20170603
Abstract:
Oil and gas shows are active in the red-brown sandy mudstone interval under the unconformity surface between Jurassic and Cretaceous strata on the southern slope of Mosuowan swell. High-yield commercial oil flow has been gained from several wells drilled by Sinopec in the sandy mudstone interval and then Yongjin oilfield has been discovered. However, the classification of horizon of the interval has always been controversial. On the basis of the latest 2D seismic data and combining with well logging-seismic calibration, the paper performs 2D & 3D merging detailed seismic geological interpretation in the study area. Combined with the comparative analysis of core and microscopic features under microscope, it is considered that the red-brown sandy mudstone interval which is widely distributed at the top of Jurassic in Mosuowan swell should be classified into the Middle Jurassic Toutunhe formation. The re-classification of the horizon identifies that the major target zone in the study area is the Toutunhe formation which has favorable conditions for large-scale hydrocarbon accumulation, and indicates further exploration direction on the southern slope of Mosuowan swell.

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Last Update: 2017-12-08