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Petroleum Science >2009,??Issue 4:??395-399 DOI: https://doi.org/10.1007/s12182-009-0060-6

Theoretical and experimental study of the pulling force of jet bits in radial drilling technology Open?Access

文章信息

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作者：Guo Ruichang,Li Gensheng,Huang Zhongwei,Tian Shouceng,Zhang Xiaoning and Wu Wei
作者單位：

State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China;State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China;State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China;State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China;State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China;State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China

投稿時(shí)間：2009-01-10 00:00:00.0
引用方式：Guo, R., Li, G., Huang, Z. et al. Pet. Sci. (2009) 6: 395. https://doi.org/10.1007/s12182-009-0060-6

文章摘要

Radial drilling technology, of which the jet bit is the key device, is a research focus in the field of oil drilling and production. This paper establishes mechanical equations for jet bits and analyzes the hydroseal of backward jets in bottom holes. Meanwhile this paper establishes a mechanical equation for a high pressure hose and analyzes the axial force distribution. Laboratory experiments indicate that the low rate, the angle between the backward nozzle axis and the jet bit axis, and the hole diameter are the major inluencing factors; the generation of the pulling force is mainly due to the inlet pressure of the jet bit; the backward jets can signiicantly increase not only the pulling force but also the stability of jet bits. The pulling force would reach 8,376 N under experimental conditions, which can steadily pull the high-pressure hose forward.

關(guān)鍵詞

    Radial drilling, water jet, jet bit, depression effect, pulling force