| 安塞油田长61^1-2心小层单砂体界面识别及划分方法 |
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| 引用本文： | 张欢,安明胜,马明宇,曹燕燕,王磊飞,黄炜.安塞油田长61^1-2心小层单砂体界面识别及划分方法[J].宁夏石油化工,2014(1):62-64,73. |
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| 作者姓名： | 张欢 安明胜 马明宇 曹燕燕 王磊飞 黄炜 |
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| 作者单位： | [1]中国石油长庆油田分公司第一采油厂,陕西延安716000 [2]中国石油长庆油田分公司超低渗透油藏开发部,陕西西安710021 |
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| 基金项目： | 国家重大专项：低渗透油藏中高含水期稳产配套技术,项目编号：2011ZX05013-005. |
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| 摘 要： | 安塞油田长61^1-2小层是主力开采油层，总体连片性较好、稳定性较强。但是细分到单砂体上，发现单砂体稳定性差，变化较快，常有尖灭，且单砂体间泥质夹层发育。这些特征说明建立一套单砂体划分方法、研究单砂体结构形态具有重要意义，单砂体研究可以给改善油藏开发效果提供新的思路。以长61^1-2小层为对象，通过野外露头和井下对比，研究单砂体形成背景及规律，建立了单砂体划分方法。划分标准以GR曲线为核心，划分界限为0．4-0．5（归一化值，无量纲）。
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| 关 键 词： | 单砂体 界面 野外露头 GR曲线 |
Sandbody interface recognition and classification method of Chang61^1-2 layer,Ansai oilfield |
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| Authors: | ZHANG Huan AN Mingsheng MA Mingyu CAO Yanyan WANG Leifei HUANG Wei |
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| Affiliation: | 1.Oil Production Plant 1 of Petrochina Changqing Oilfield Company, Yan＇an Shanxi 716000, China; 2.Development Department for Extra-Low Permeab ilit3 Oil Reservoirs of PetroChina Changqing Oi!]Teld Company, X i ＂an Shanxi 710021, China) |
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| Abstract: | Chang61^1-2 layer is the primary production layer of Ansai oilfield, with great overall continuity and stability. However, single sandbodies are not as stable and there＇s rapid change and pinch out, with mud layer or carbonate layers imbedded in sandbodies. These character put forward the necessity of establishing a method to classify and analyze the structure of sandbodies, and this work would provide new perspective in improving develop- mental result. This paper took Chang61^1-2 as the object of study, and analyzed the back- ground and law of sandbody formation through outcrop observation and well data comparison, amt established the classification method of sandbodies. This method mainly based on GR logging data, with the normalized boundary value of 0.4-0.5. |
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| Keywords: | sandbody interface outcrop GR logging |
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