| 塔中Ⅰ号气田奥陶系气油比变化规律及生产应用 |
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| 作者姓名： | 康博 张正红 邓兴梁 韩兴杰 李世银 谢恩 杨柳明 |
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| 作者单位： | 中国石油塔里木油田分公司勘探开发研究院 新疆 库尔勒 841000,中国石油塔里木油田分公司勘探开发研究院 新疆 库尔勒 841000,中国石油塔里木油田分公司勘探开发研究院 新疆 库尔勒 841000,中国石油塔里木油田分公司勘探开发研究院 新疆 库尔勒 841000,中国石油塔里木油田分公司勘探开发研究院 新疆 库尔勒 841000,中国石油塔里木油田分公司勘探开发研究院 新疆 库尔勒 841000,中国石油塔里木油田分公司勘探开发研究院 新疆 库尔勒 841000 |
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| 摘 要： | 塔中奥陶系油气藏为礁滩型和层间岩溶储集体控制的碳酸盐岩缝洞型准层状凝析气藏,整体富气局部含油,储层非均质性强,相态特征复杂,气油比变化大。通过对塔中I号气田气油比变化特征,划分出基本稳定型、上升型、波动型和先升后降型4种气油比变化类型。分析了不同变化特征的主控因素,储集空间类型、驱动方式、相态变化及钻井轨迹是影响气油比变化的重要原因。根据这些影响因素,结合生产需要,提出了根据气油比变化在该气田的应用方法,如出水预警机制、钻井轨迹优化、提高采收率对策等。
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| 关 键 词： | 塔中 气油比 储层类型 生产应用 提高采收率 |
Change Regulations of Gas-Oil Ratio of Ordovician and Its Application in Production of Tazhong I Gas Field |
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| Authors: | Kang Bo Zhang Zhenghong Deng Xingliang Han Xingjie Li Shiyin Xie En and Yang Liuming |
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| Institution: | Research Institute of Exploration and Development, PetroChina Tarim Oilfield Company, Korla, Xinjiang 841000, China,Research Institute of Exploration and Development, PetroChina Tarim Oilfield Company, Korla, Xinjiang 841000, China,Research Institute of Exploration and Development, PetroChina Tarim Oilfield Company, Korla, Xinjiang 841000, China,Research Institute of Exploration and Development, PetroChina Tarim Oilfield Company, Korla, Xinjiang 841000, China,Research Institute of Exploration and Development, PetroChina Tarim Oilfield Company, Korla, Xinjiang 841000, China,Research Institute of Exploration and Development, PetroChina Tarim Oilfield Company, Korla, Xinjiang 841000, China and Research Institute of Exploration and Development, PetroChina Tarim Oilfield Company, Korla, Xinjiang 841000, China |
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| Abstract: | The oil-gas reservoir of Ordovician in Tazhong is a kind of carbonate fracture-cavity quasi-layered condensate gas reservoir which is controlled by reef-bank and layered karst reservoir. It is rich in gas overall and oil locally, and has strong heterogeneity, complex phase state, and big change in gas-oil ratio. Based on the change characteristics of gas-oil ratio in Tazhong I gas field, this paper defines fours types of gas-oil ratio change, including basically stable type, rising type, volatility type and the type of falling after rising, and analyzes main controlling factors of different changing characteristics. Reservoir types, drive modes, phase changes and trace of drilling are the important causes of gas-oil ratio change. According to these factors and combining with production need, this paper proposes an application method for Tazhong 1 gas field, such as water warning mechanism, drilling trace optimization, oil recovery enhancing strategies, and etc. |
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| Keywords: | Tazhong gas-oil ratio reservoir type production application enhancing oil recovery |
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