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首页> 外文期刊>Journal of Surfactants and Detergents >Research and Application of Recyclable Nitrogen Foam Horizontal Well Drilling Technology in the Daniudi Gas Field
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Research and Application of Recyclable Nitrogen Foam Horizontal Well Drilling Technology in the Daniudi Gas Field

机译：大牛地气田可再生氮泡沫卧式钻井技术研究与应用

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摘要

The Daniudi gas field is typically rich in ultra-low permeability gas reservoirs in China, but its development is difficult. In this paper, pilot implementation of underbalanced horizontal well drilling technology was used in the H1 gas reservoir to develop the proved reserves effectively. Owing to the limitations of drilling technology and environmental protection, the recyclable nitrogen-foam was ultimately chosen as a circulating medium. Through theoretical analysis and extensive laboratory tests, the optimal foaming agent composed of α-olefin sulfonate and coco amine oxide was selected among six anionic surfac-tants/zwitterionic surfactants systems. The developed recyclable nitrogen-foam has high salt resistance, temperature resistance and cycle performance, but weaker oil resistance. After the recyclable nitrogen-foam horizontal well drilling technology was used in the H1 gas reservoir, the average rate of penetration of horizontal section increased by 118 %, ignition could be achieved during drilling and natural gas was of great potential for production. It was the first time to increase natural gas production capacity in the H1 gas reservoir using recyclable nitrogen-foam horizontal well drilling technology. Successful application of this technology provides technical reserves for the effective development of the H1 gas reservoir.
机译：在中国，大牛地气田通常富含超低渗透性气藏，但开发难度很大。本文在H1气藏中采用了欠平衡水平井钻井技术的试点实施，有效开发了探明储量。由于钻井技术和环境保护的局限性，最终选择了可回收的氮泡沫作为循环介质。通过理论分析和广泛的实验室测试，从六个阴离子表面活性剂/两性离子表面活性剂体系中选择了由α-烯烃磺酸盐和可可氧化胺组成的最佳发泡剂。研发的可回收氮泡沫具有较高的耐盐性，耐热性和循环性能，但其耐油性较弱。 H1气藏采用可再生氮泡沫水平井钻井技术后，水平断面平均渗透率提高了118％，在钻井过程中可以点火，天然气具有很大的生产潜力。这是第一次使用可回收的氮泡沫水平井钻井技术来提高H1气藏的天然气生产能力。该技术的成功应用为H1气藏的有效开发提供了技术储备。

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