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摘要? 從預防井涌的角度對水平井最大長度的限制因素進行了分析，根據(jù)鉆井液流體力學基本原理及水平井水平段環(huán)空壓耗計算模型,，得出水平井水平段最大長度的設計方法,；針對排量、地層安全密度窗口和鉆井液流變性等因素對水平井水平段長度的影響進行敏感性分析,。結(jié)果表明,，水平井水平段最大長度受排量、地層安全密度窗口和鉆井液流變性等多個因素共同影響,。泵排量增加,、鉆井液粘度增大，水平段最大允許長度減??；地層安全密度窗口增加，水平段最大允許長度增大,。

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關(guān)鍵詞 ：最大長度,；環(huán)空壓耗,；泵排量；安全密度窗口,；預防井涌

Abstract：

　　The limiting factors of the maximum length of horizontal wells were analyzed from the kick prevention perspective. The methods of maximum length design of horizontal sections were proposed according to the basic principles of drilling fluid dynamics and the computational model of annular pressure loss in the horizontal section. In view of the factors displacement, safe mud density window and drilling fluid rheology, sensitivity analysis of the length of horizontal sections was carried out. The results show that the maximum length of horizontal sections is influenced by displacement, safe mud density window and drilling fluid rheology. The maximum length decreases with an increase of displacement and viscosity of drilling fluid; the maximum length increases with an increase of the safe mud density window.

Key words： maximum length ; annular pressure loss ; pump displacement ; safe mud density window ; well-surge prevention

收稿日期: 2018-05-30 ????

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連吉弘,，楊彩鳳，田藝,，孫寶江,，孫小輝，高永海. 基于預防井涌的水平井最大長度設計方法[J]. 石油科學通報, 2016, 1(2): 225-232. LIAN Jihong, YANG Caifeng, TIAN Yi, SUN Baojiang, SUN Xiaohui, GAO Yonghai. Design methods for the maximum length of horizontal wells based on well-surge prevention. 石油科學通報, 2016, 1(2): 225-232.

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