华池油田长3岩性油藏流动单元划分及其合理性验证
- 收稿日期:
1900-01-01
- 修回日期:
1900-01-01
- 刊出日期:
2008-02-10
摘要: 提出岩性油气藏流动单元划分及其合理性验证方法。研究中针对华池油田长3岩性油藏的特点，采取控制流体渗流的主要参数，对流动单元进行了划分。同时采用数学方法、微观渗流实验方法、宏观生产动态分析方法对流动单元划分的合理性进行了验证。研究结果表明：1）研究区流动单元可以分为三类，分别为A类、B类和C类。不同流动单元所处相带位置不同，物性也不同。2）判别分析的方法、渗流实验方法和生产动态分析法是验证流动单元划分合理性的有效手段。研究区流动单元的正判率达95％以上；相同流动单元具有相似的微观渗流特征及生产动态特征，不同流动单元的微观渗流特征及生产动态特征明显不同。3）C类流动单元及注采井间不同流动单元对接区域是剩余油的主要富集区，应注意挖潜，提高油层采收率。
The Flow Units Division and Reasonableness Verification of Chang 3 Lithologic Oil Reservoir of Huachi Oilfield in Ordos Basin
- State Key Laboratory of Continental Dynamics, Xi'an 710069
- Received Date:
1900-01-01
- Rev Recd Date:
1900-01-01
- Publish Date:
2008-02-10
Abstract: To provide a reasonable means for the flow units division and verification in lithologic oil and gas reservoir. Considering the characteristics of Chang 3 lithologic oil reservoir of Huachi oilfield in Ordos Basin, the main parameters that controlling fluid flowing has been taken to divide flow units after formation division and facies differentiation, and mathematical method, microflow experiments, and dynamic analysis in macro has been adopt to verify the reasonableness of the flow units division in the research. The study results show: 1) three kinds of flow units are divided, they are called as A, B and C. The A flow unit is always located in the main face tract of underwater distributary river course, and its physical property is better. The C flow unit is always located in the edge of underwater distributary river course, and its physical property is not so good. The B flow unit is always in the middle of A flow unit and C flow unit no matter the face position or its physical property; 2) The methods of discrimination analysis, microflow experiments, and dynamic analysis in macro are effective to verify the reasonableness of the flow units division. The correct rate of 100 data points that be selected randomly have been over 95%; the same flow units have similar microflow characteristics, and different flow units are obvious disparate, which reflect in the order of fluid entry, the fluid displacement mode, and the remaining oil types; the product dynamic characters are related with the classification of flow units, reflecting in initial production, the hygroscopic state of water wells, and response and breakthrough of oil wells; 3) C flow units and the joint areas of different flow units between injection well and production well will be the main oilrich of residual oil. And an injection well had better be opened the same flow units at the same time for reducing the water level of interference, and as while the same flow units should be opened to reducing the injected water finger advance, and so the oil recovery will be enhanced.
朱玉双. 华池油田长3岩性油藏流动单元划分及其合理性验证[J]. 沉积学报, 2008, 26(1): 120-127.
| 引用本文: |
朱玉双. 华池油田长3岩性油藏流动单元划分及其合理性验证[J]. 沉积学报, 2008, 26(1): 120-127.
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ZHU Yushuang. The Flow Units Division and Reasonableness Verification of Chang 3 Lithologic Oil Reservoir of Huachi Oilfield in Ordos Basin[J]. Acta Sedimentologica Sinica, 2008, 26(1): 120-127.
| Citation: |
ZHU Yushuang. The Flow Units Division and Reasonableness Verification of Chang 3 Lithologic Oil Reservoir of Huachi Oilfield in Ordos Basin[J]. Acta Sedimentologica Sinica, 2008, 26(1): 120-127.
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