| 渤海低渗油田定向井井身结构优化 |
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| 引用本文： | 边杰,和鹏飞,侯冠中,席江军,张鑫.渤海低渗油田定向井井身结构优化[J].探矿工程,2017,44(1):52-56. |
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| 作者姓名： | 边杰 和鹏飞 侯冠中 席江军 张鑫 |
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| 作者单位： | 中海油能源发展股份有限公司工程技术分公司,中海油能源发展股份有限公司工程技术分公司,中海石油（中国）有限公司天津分公司,中海石油（中国）有限公司天津分公司,中海石油（中国）有限公司天津分公司 |
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| 摘 要： | 渤海25油田沙河街组低渗储层地层压力系统复杂，一期开发时采用渤海常规井身结构，但是作业复杂情况频发，工期较长，导致成本高，整体经济效益较差。通过对地质油藏、地层特点做深入研究分析，优化出一套φ355.6 mm井眼×φ273.1 mm套管 φ241.3 mm井眼×φ177.8 mm套管 φ152.4 mm井眼×φ114.3 mm尾管的井身结构及其配套提速技术。通过在2口井的应用试验，取得了较好的效果，2口井平均井深3607.5 m，平均钻井周期19.32天，钻井周期共计比基本设计节余5.37天，钻井时效比基本设计提高24%，同时小井眼钻井所使用的器材及材料费用相应减少，而且投产后产量较好，经济效益显著，具有广阔的应用前景。
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| 关 键 词： | 井身结构 小井眼 钻井提速 配套技术 定向井 渤海油田 |
| 收稿时间： | 2016/5/30 0:00:00 |
| 修稿时间： | 2016/8/15 0:00:00 |
Optimization of Casing Program for Directional Wells in Bohai Low Permeability Oilfield |
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| BIAN Jie,HE Peng-fei,HOU Guan-zhong,XI Jiang-jun and ZHANG Xin.Optimization of Casing Program for Directional Wells in Bohai Low Permeability Oilfield[J].Exploration Engineering(Drilling & Tunneling),2017,44(1):52-56. |
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| Authors: | BIAN Jie HE Peng-fei HOU Guan-zhong XI Jiang-jun and ZHANG Xin |
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| Institution: | CNOOC EnerTech-Drilling & Production Co.,CNOOC EnerTech-Drilling & Production Co.,Tianjin Branch of CNOOC Ltd.,Tianjin Branch of CNOOC Ltd.,Tianjin Branch of CNOOC Ltd. |
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| Abstract: | The formation pressure system of Bohai 25 oilfield is complex. In the first stage of development, the conventional casing program in Bohai was adopted, but the frequent complex situation and long construction period led to high cost with poor overall economic benefit. Through the study on slim hole technology in Thailand bay, combined with the actual situation in Bohai, a set of optimized casing program 355.6mm hole×273.1mm casing 241.3mm hole×177.8mm casing 152.4mm hole×114.3mm liner and the support improved ROP technology was developed. Through the application tests in 2 wells, good results have been achieved with the average well depth 3607.5m and average drilling period 19.32 days, drilling cycle saved 5.37 days and drilling efficiency increased by 24% in these 2 wells than the basic design. The costs of equipments and materials used in slim hole drilling go down accordingly and better yield and significant economic benefits are received in operation with broad application prospects. |
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| Keywords: | casing program slim hole ROP increasing support technology directional well Bohai oilfield |
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