河北地质大学学报2026，Vol.49Issue(1)：59-68,10.DOI:10.13937/j.cnki.hbdzdxxb.2026.01.007
松辽盆地南部致密气刻度区地质解剖与资源评价关键参数研究——以长岭断陷层龙凤山次凹为例
Geological Dissection and Key Parameter Evaluation for Tight Gas Resource Assessment in the Calibrated Area of Southern Songliao Basin:A Case Study of Longfengshan Sub-Sag in Changling Fault Depression
摘要
Abstract
Addressing the key challenge of lacking high-confidence geological calibration zones in resource assessment of tight gas in the southern Songliao Basin,this study focuses on the Longfengshan sub-depression within the Changling fault depression:a region with relatively high exploration maturity.A systematic methodology integrating"geological dissection,parameter quantification,and model validation"was established.Key petroleum system elements including source rock characteristics,reservoir conditions,caprock seal capacity,trap types,and hydrocarbon accumulation conditions were meticulously analyzed.Using a small-grid volumetric method combined with an integrated conventional-unconventional hydrocarbon resource evaluation approach,the resource volumes of the clastic reservoirs in the Yingcheng Formation-Shahezi Formation and the volcanic reservoirs in the Huoshi Formation were quantitatively assessed.Results indicate that the in-place resource volume of the Yingcheng-Shahezi clastic tight gas system is 768.2×108 m3,with a recoverable resource volume of 314.2×108 m3,resulting in a hydrocarbon charge efficiency of 3.7％and a recovery factor of 40.9％.For the Huoshi Formation volcanic tight gas system,the in-place resource volume is 315×108 m3;however,due to rapid lateral facies variations,the recovery factor decreases to 34.4％.This study establishes,for the first time,a methodological framework for calibration zone analysis tailored to the geological prototype of faulted depressions in southern Songliao Basin.The key parameters derived provide a scientific basis for tiered resource potential evaluation of tight gas in the Songliao Basin and analogous complex faulted basins.关键词
致密气/龙凤山次凹/刻度区解剖/资源评价/关键参数Key words
tight gas/Longfengshan sub-sag/calibration area dissection/resource evaluation/key parameters分类
天文与地球科学引用本文复制引用
陈延哲..松辽盆地南部致密气刻度区地质解剖与资源评价关键参数研究——以长岭断陷层龙凤山次凹为例[J].河北地质大学学报,2026,49(1):59-68,10.基金项目
中国石油化工股份有限公司重大项目(P23234) （P23234）
