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Petroleum Science >2008,??Issue 3:??271-276 DOI: https://doi.org/10.1007/s12182-009-0043-7

Experimental study of low-damage drilling fluid to minimize waterblocking of low-permeability gas reservoirs Open?Access

文章信息

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作者：Zhang Hongxia,Yan Jienian,Lu Yu,Shu Yong and Zhao Shengying
作者單位：

Key Laboratory of Petroleum Engineering, Ministry of Education, China University of Petroleum, Beijing 102249, China;Key Laboratory of Petroleum Engineering, Ministry of Education, China University of Petroleum, Beijing 102249, China;Drilling Fluid Branch, Great Wall Drilling Company, PetroChina, Panjin, Liaoning 124010, China;Key Laboratory of Petroleum Engineering, Ministry of Education, China University of Petroleum, Beijing 102249, China;Key Laboratory of Petroleum Engineering, Ministry of Education, China University of Petroleum, Beijing 102249, China

投稿時(shí)間：2008-09-16
引用方式：Zhang, H., Yan, J., Lu, Y. et al. Pet. Sci. (2009) 6: 271. https://doi.org/10.1007/s12182-009-0043-7

文章摘要

This paper discusses the systematic design and development of low-damage drilling fluid to protect the low-permeability gas reservoir of the Sulige block in the Ordos Basin, Inner Mongolia Autonomous Region, China. Based on investigation of the geological characteristics and the potential formation damage of the Permian formation of the reservoir, waterblocking due to invasion of drilling or completion fluids was identified one of the most severe causes of damage to gas well deliverability. By adopting the phase trap prevention method, ideal packing theory, and film-forming technology, a lowdamage drilling fluid, sodium formate brine containing efficient waterblocking preventing surfactants, optimized temporary bridging agents (TBAs), and film-forming agents has been developed. The performance of the new drilling fluid was evaluated by using a variety of techniques. The results show that the fluid has good rheological properties, good strong shale-swelling inhibition, good temporary plugging effect, ultra-low filtration, and good lubricity. It can efficiently minimize waterblocking and can be used to drill horizontal wells with minimal intervention of the reservoir in the Sulige Gas Field.

關(guān)鍵詞

    Low-permeability gas reservoir, waterblocking, ideal packing theory (IPT), film-forming agent, drilling fluid