| 汪存圣,王潘,张莹,闫巧洁,王安,连晓亮,张雨晴.松辽盆地南部青山口组水平井定向钻进地质导向技术[J].地质找矿论丛,2025,40(3):328-336 |
| 松辽盆地南部青山口组水平井定向钻进地质导向技术 |
| Geological Guidance Technology for Directional Drilling of Horizontal Wells in the Qingshankou Formation in the Southern Songliao Basin |
| 投稿时间：2025-04-09 修订日期：2025-08-18 |
| DOI：10.6053/j.issn.1001-1412.2025.03.006 |
| 中文关键词: 青山口组 页岩油钻井 逐层约束模型 水平井 地质导向 松辽盆地南部 |
| 英文关键词:Qingshankou Formation shale oil drilling layer-by-layer constraint model horizontal wells geological orientation southern Songliao Basin |
| 基金项目:中国石油集团东方地球物理勘探有限责任公司科研项目"CCUS/CCS安全运营风险监测与CO2扩展前缘刻画技术研究及应用"(编号:12-02-2022)资助。 |
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| 中文摘要: |
| 松辽盆地南部青山口组一段多口井获得工业油流，展示出了松辽盆地南部青山口组具有良好的勘探前景。青山口组一段沉积相主要是辫状河三角洲前缘相沉积，不仅是主力优质烃源岩发育层系，还是页岩油的主力勘探层系，前人通过研究将青山口组一段页岩储层主要划分成两种模式，其中薄层砂岩型页岩油单砂体厚度一般为2 m~5 m，是近期主要勘探对象。在以往的直井油气开采模式中，薄砂层难以形成有效的经济开采价值，通过实钻验证得出水平井是实现经济效益最佳方案。本文通过钻井数据和地震数据相结合，利用波形指示反演方法开展储层精细刻画，应用多标志层逐层约束方法建立高精度速度场，通过时深转换技术，将时间域剖面转换为深度域剖面，大大提高了薄砂层水平井的储层钻遇率和油层钻遇率，有效推动了松辽盆地南部地区青山口组一段勘探和开发。 |
| 英文摘要: |
| Industrial oil flows have been obtained from multiple wells in the Qing-1 Member of the southern Songliao Basin, thereby demonstrating the favorable exploration potential of the Qingshankou Formation in this region. Braided river delta front facies deposits primarily characterize the Qing-1 Member. As the principal target for shale oil exploration, it serves as a main interval for developing high-quality hydrocarbon source rocks. Previous research has identified two main models for the shale reservoirs in the Qing-1 Member. Among these, the thin sandstone-type shale oil reservoirs typically feature individual sand bodies with thicknesses of 2-5 meters, with the primary near-term exploration target. Through the development of conventional vertical wells, these thin sand layers have proven challenging to exploit economically. It can be indicated that horizontal wells offer the optimal solution for achieving economic viability in this research. With the combination of drilling data and seismic data, this study utilizes the waveform-indicated inversion method to conduct detailed reservoir characterization. A high-precision velocity model is built with a multi-marker layer and a stepwise constraint approach. Time-domain seismic sections is transformed into depth-domain sections by utilizing time-depth conversion technology. These technological advancements substantially improved both the reservoir encounter rate and the pay zone penetration rate for horizontal wells targeting thin sand layers, effectively propelling the exploration and development endeavors of the Qing-1 Member in the southern Songliao Basin forward. |
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