| 杜佳,张兵,米洪刚,苏羽.VBM高精度构造建模方法在临兴中区致密砂岩气藏的应用[J].矿产勘查,2025,16(S1):218-223 |
| VBM高精度构造建模方法在临兴中区致密砂岩气藏的应用 |
| Application of VBM high-precision structural modeling method in tight sandstone gas reservoir in Linxing central district |
| 投稿时间：2024-12-18 |
| DOI：10.20008/j.kckc.2025S1026 |
| 中文关键词: VBM方法 构造建模 致密砂岩气 鄂尔多斯盆地东缘 |
| 英文关键词: VBM algorithm structural modeling tight sandstone gas eastern margin of Ordos Basin |
| 基金项目:本文受国家自然科学基金项目(52274014)和中国海洋石油有限公司综合科研课题(KJZH-2023-2303)联合资助。 |
|
| 摘要点击次数: 482 |
| 全文下载次数: 152 |
| 中文摘要: |
| 临兴中区南部发育环紫金山隆起的洼槽，北部构造形态平缓，表现为南北向背斜与向斜相间排列，同时发育多组走滑断层，断面高陡，近于直立，局部发育“牛眼”状陷落柱构造。常规的建模方法不能精确表征该区复杂的构造 -地层特征，模型难以满足实际生产需要。因此，本文采用 VBM建模方法建立临兴中区致密砂岩气藏的构造格架模型，平面网格采用 50 m×50 m精度可以保证井间至少有 5个独立网格单元，清晰描述井间砂体和物性的变化特征，纵向网格采用 1m精度可以确保描述测井解释物性曲线变化规律，精细刻画出薄气层、薄砂层。结果表明: VBM方法通过体积守恒原理和非结构化网格表征技术，对复杂构造模型能够做到精准刻画，空间网格无扭曲，能够较好处理复杂的地层接触和断层展布问题。新建立的地层格架模型相比传统角点网格建立的模型具有更高的网格质量，且保持了复杂断层处的断层组合关系以及层序地层特征，可以为后续的储层地质建模提供更可靠的模型框架基础。 |
| 英文摘要: |
| In the southern part of central district of Linxing，there is a trough developed around the Purple Mountain uplift，while in the northern part，the structural form is gentle，characterized by alternating north-south anticlines and synclines. Multiple sets of strike slip faults are also developed，with high and steep cross-sections that are nearly vertical，and locally developed "bull′s eye" shaped collapse column structures. Conventional model.ing methods cannot accurately characterize the complex structural stratigraphic characteristics of the area，and the model is difficult to meet practical production needs. Therefore，this article adopts the VBM modeling method to establish a structural framework model of the tight sandstone gas reservoir in Linxing Central District. The planegrid adopts a 50 m×50 m accuracy to ensure that there are at least 5 independent grid units between wells，clearly describing the changing characteristics of sand bodies and physical properties between wells. The vertical gridadopts a 1 m accuracy to ensure the description of the variation law of logging interpretation physical propertycurves，and finely depict thin gas layers and thin sand layers. The results show that the VBM method can accurately characterize complex structural models through the principle of volume conservation and unstructuredgrid representation techniques，with no distortion in the spatial grid，and can better handle complex geologicalcontact and fault distribution problems. The newly established stratigraphic framework model has higher grid qual.ity compared to the traditional corner grid model，and maintains the fault combination relationship and sequence stratigraphic characteristics at complex faults， providing a more reliable model framework foundation for subsequent reservoir geological modeling. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |