[1]王建華,鄢捷年,蘇山林.硬脆性泥頁巖井壁穩定評價新方法[J].石油鉆采工藝,2006,28(2):028-30.[doi:10.3969/j.issn.1000-7393.2006.02.009]
 WANG Jian-hua,YAN Jie-nian,SU Shan-lin.New method for evaluating borehole stability in brittle shale[J].Oil Drilling & Production Technology,2006,28(2):028-30.[doi:10.3969/j.issn.1000-7393.2006.02.009]
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硬脆性泥頁巖井壁穩定評價新方法
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《石油鉆采工藝》[ISSN:1000-7393/CN:13-1072/TE]

卷:
28卷
期數:
2006年2期
頁碼:
028-30
欄目:
鉆井與完井工作液
出版日期:
2006-04-20

文章信息/Info

Title:
New method for evaluating borehole stability in brittle shale
作者:
王建華1 鄢捷年1 蘇山林2
1. 中國石油大學, 北京 102249;
2. 勝利石油管理局黃河鉆井公司, 山東 東營 257000
Author(s):
WANG Jian-hua1 YAN Jie-nian1 SU Shan-lin2
College of Petroleum and Natural Gas Engineering, China University of Petroleum, Changping 102249, Beijing, China
關鍵詞:
硬脆性泥頁巖井壁失穩微裂縫評價方法
Keywords:
hard brittle shaleborehole instabilitymicro-fractureevaluation methods
分類號:
TE21;TE25
DOI:
10.3969/j.issn.1000-7393.2006.02.009
摘要:
以伊利石、伊蒙混層為主的硬脆性泥頁巖微裂縫發育,容易引起井壁失穩,一直未能找到很好的評價方法。因此,建立對硬脆性泥頁巖井壁穩定的評價手段十分迫切。介紹了一種新型的硬脆性泥頁巖井壁穩定評價方法——微裂縫的模擬及其封堵。室內利用加工的3種巖心模擬出了1~50μm的微裂縫,分別研究了流速、圍壓和裂縫寬度之間的關系,并用不同介質對不同寬度的裂縫進行了封堵試驗,構建的硅酸鹽鉆井液體系對3種巖心的封堵效率均達到90%以上。試驗結果表明:該方法具有一定的可行性,對提高鉆井液體系的封堵能力有一定的指導作用。
Abstract:
In the present,the typical experience can’t solve all the problems of borehole instability.Especially in brittle shale formation,there are not optical methods to solve in the lab.So setting up methods for brittle shale is very urgent.To solve the borehole instability in brittle shale because of micro-fractures,this paper set up a new evaluation method of hard brittle shale——the simulation and sealing about micro-fracture.The method could simulate little fracture from 1 μm to 50 μm,and the experiments of seal have been done.The relationship among velocity,peripheral pressure and fracture width was studied.Sealing efficiency of the silicate drilling fluid was reached to 90%.The result of experiments indicates that the method is possible,and has some guidance for improving the sealing capacity of drilling fluids.

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備注/Memo

備注/Memo:
收稿日期:2005-12-23;改回日期:。
基金項目:CNPC"十五"科技攻關項目:欠平衡鉆水平井技術研究,編號2000307-4
作者簡介:王建華,1981年生。2005年畢業于長江大學油田化學專業,現為石油天然氣工程學院05級在讀博士研究生,主要從事鉆井液完井液研究。電話:010-89733893,E-mail:[email protected]
更新日期/Last Update: 1900-01-01
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