普光地区上三叠统小塘子组泥岩分布地震预测

Abstract

Abstract:

Gas logging of multiple wells at the top of Leikoupo formation in Puguang area is better. The laboratory analysis shows that high quality source rocks are developed in Xiaotangzi formation of the overlying strata. Therefore, as an important hydrocarbon source layer and caprock, the mudstone distribution prediction of Xiaotangzi formation is of great significance to the top weathered crust reservoir of Leikoupo formation in Puguang area. On the basis of defining the petrophysical characteristics and logging response characteristics of mudstone in Xiaotangzi formation, the fine well-seismic calibration, geological modeling and forward modeling of mudstone were carried out by using the drilling and 3D seismic data, and the seismic reflection characteristics of mudstone in Xiaotangzi formation were clarified. Finally, combined with paleogeomorphology analysis, attribute analysis and other means, the favorable facies belt of mudstone development was determined. On this basis, the thickness of mudstone was quantitatively predicted by sparse pulse inversion, a set of seismic prediction method suitable for mudstone of Xiaotangzi formation in Puguang area was established, and the distribution of Upper Triassic was predicted. Then the comparison of mudstone thickness with that of completed drilling confirmed the reliability of the prediction results.

Key words: Puguang area, Xiaotangzi formation, attribute analysis, seismic inversion, mudstone prediction in seismic

CLC Number:

P618

Da JIN. Prediction of mudstone distribution on top of middle Triassic Xiaotangzi formation in Puguang area[J]. Reservoir Evaluation and Development, 2019, 9(4): 6-11.

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References 15

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井号	泥岩厚度/m	是否与预测结果相符
pg3	21	是
pg101	12	是
lj1	18	否
mb2	28	是
mb3	32	否
mb8	28	是
dw101	19	是
dw2	27	是

Prediction of mudstone distribution on top of middle Triassic Xiaotangzi formation in Puguang area

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