Exploration breakthrough of interbedded shale oil in the Cretaceous Qingshankou Formation in northern Songliao Basin and its major significance

doi:10.7623/syxb202603001

Acta Petrolei Sinica ›› 2026, Vol. 47 ›› Issue (3): 511-521.DOI: 10.7623/syxb202603001

• PETROLEUM EXPLORATION •

Exploration breakthrough of interbedded shale oil in the Cretaceous Qingshankou Formation in northern Songliao Basin and its major significance

Bai Xuefeng^1,2,3, Lu Jiamin^1,2,4, Zhang Jinyou^1,4,5, Kang Dejiang^1,5, Wang Jinwei^1,5, Yu Dan^1,5, Liu Lijuan^1,5

1. State Key Laboratory of Continental Shale Oil, Heilongjiang Daqing 163712, China;
2. Daqing Oilfield Limited Company, Heilongjiang Daqing 163002, China;
3. School of Geosciences, China University of Petroleum (East China), Shandong Qingdao 266580, China;
4. School of Earth Sciences, Northeast Petroleum University, Heilongjiang Daqing 163318, China;
5. Exploration and Development Research Institute, Daqing Oilfield Limited Company, Heilongjiang Daqing 163712, China

Received:2025-03-20 Revised:2026-01-21 Published:2026-04-09

松辽盆地北部白垩系青山口组夹层型页岩油勘探突破及其重大意义

白雪峰^1,2,3, 陆加敏^1,2,4, 张金友^1,4,5, 康德江^1,5, 王金伟^1,5, 于丹^1,5, 刘丽娟^1,5

1. 多资源协同陆相页岩油绿色开采全国重点实验室黑龙江大庆 163712;
2. 大庆油田有限责任公司黑龙江大庆 163002;
3. 中国石油大学(华东)地球科学与技术学院山东青岛 266580;
4. 东北石油大学地球科学学院黑龙江大庆 163318;
5. 大庆油田有限责任公司勘探开发研究院黑龙江大庆 163712

通讯作者: 张金友,男,1983年4月生,2009年获西南石油大学硕士学位,现为大庆油田有限责任公司勘探开发研究院高级工程师,主要从事非常规油气勘探评价和管理工作。Email:zhangjinyou@petrochina.com.cn
作者简介:白雪峰,男,1979年12月生,2007年获吉林大学硕士学位,现为大庆油田有限责任公司副总经理、总地质师、教授级高级工程师,中国石油大学(华东)博士研究生,主要从事油气勘探开发研究和管理工作。Email:bxf@petrochina.com.cn
基金资助:
国家科技重大专项“松辽盆地白垩系陆相页岩油勘探开发技术与集成示范”(2024ZD1404900)和新型油气勘探开发国家科技重大专项“泥纹型页岩油甜点评价与规模增储技术集成”(2024ZD1404901)资助。

Abstract

Abstract: Following the breakthrough in the exploration of laminated clay-rich shale oil in Qingshankou Formation, substantial industrial oil flows were obtained through hydraulic fracturing of the interbedded shale oil reservoirs in the Member 2 of Qingshankou Formation in Well Yingping-9 and Well Yingping-11. This marks a major advancement in the exploration of interbedded shale oil in the northern Songliao Basin. To further support the intensified hydrocarbon exploration in this region, a comprehensive analysis was performed on the sedimentary characteristics, reservoir properties, and hydrocarbon accumulation patterns of Qingshankou Formation in the northern Songliao Basin, incorporating previous exploration results. This study preliminarily identifies favorable zone for shale oil and outlines key directions for future hydrocarbon exploration. The research results show as follows. (1) The interbedded shale oil reservoirs are genetically related to deposits in the large-scale deltaic to shore-shallow lacustrine subfacies, composed of widely distributed sandstone with significant cumulative thickness. The sandstone, interbedded with shale, form a carrier for the extensive distribution of hydrocarbons. (2) Nano- to micro-scale pores and natural fractures are largely developed in the sandstone and shale, which provide essential storage space and migration pathways for shale oil. (3) Oil generally accumulates in the interbedded sandstones and shales within mature source rocks. Oil enrichment in the sandstone is primarily controlled by its physical properties, while that in the shale is governed by the original organic carbon content and thermal maturity. (4) The favorable shale oil zones are predominantly located in the western Gulong area, southern Qijia area, Changyuan area, and Sanzhao area, covering an area exceeding 1×10⁴ km². These zones exhibit large-scale, continuously-distributed oil reservoirs with vast resource potential, estimated in (20-25) ×10⁸ tons of oil. Among these, the western Gulong and southern Qijia areas possess particularly favorable geological conditions and are currently the core exploration areas.

Key words: Songliao Basin, Qingshankou Formation, interbedded shale oil, exploration breakthrough, strategic significance

摘要： 松辽盆地继在青山口组取得泥质纹层型页岩油勘探突破之后,在英平9井和英平11井的青山口组二段通过实施压裂,在夹层型页岩油中再获较高的工业油流,实现了松辽盆地北部夹层型页岩油勘探的重大突破。为进一步支撑该地区油气的深化勘探,结合已往的勘探成果,分析了松辽盆地北部青山口组的沉积特征、储层特征和成藏模式,初步划分了页岩油有利区带,明确了下一步的油气勘探方向。研究结果表明:①夹层型页岩油为大型三角洲相—滨/浅湖亚相沉积成因,砂岩分布面积广、累积厚度大,与页岩呈互层,为油气的大面积分布提供了载体;②砂岩、页岩中大量发育纳米—微米级孔隙和天然裂缝,为页岩油提供了富集空间和渗流通道;③成熟烃源岩内的夹层砂岩和页岩普遍含油,砂岩由物性控制其含油富集程度,页岩由原始有机碳含量和成熟度控制其含油富集程度;④页岩油的有利区主要分布在古龙地区西部、齐家地区南部、长垣地区和三肇地区,有利区面积超过1×10⁴km²,油藏呈大规模连续分布,资源量巨大,石油资源量为(20~25)×10⁸t,其中,古龙地区西部和齐家地区南部地质条件优越,是目前勘探的核心区。

关键词: 松辽盆地, 青山口组, 夹层型页岩油, 勘探突破, 战略意义

CLC Number:

TE132.1

Bai Xuefeng, Lu Jiamin, Zhang Jinyou, Kang Dejiang, Wang Jinwei, Yu Dan, Liu Lijuan. Exploration breakthrough of interbedded shale oil in the Cretaceous Qingshankou Formation in northern Songliao Basin and its major significance[J]. Acta Petrolei Sinica, 2026, 47(3): 511-521.

白雪峰, 陆加敏, 张金友, 康德江, 王金伟, 于丹, 刘丽娟. 松辽盆地北部白垩系青山口组夹层型页岩油勘探突破及其重大意义[J]. 石油学报, 2026, 47(3): 511-521.

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Exploration breakthrough of interbedded shale oil in the Cretaceous Qingshankou Formation in northern Songliao Basin and its major significance

松辽盆地北部白垩系青山口组夹层型页岩油勘探突破及其重大意义

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