Key Techniques in Drilling Extended Reach Horizontal Wells Through Shallow Formations
详细信息
- 责任者：Niu Hongbo (Drilling Technology Research Institute ; Sinopec Shengli Petroleum Bureau ; Dongying 257017 ; China) ; Chen Jianlong
- 刊名：Natural Gas Industry
- 出版年：2012
- 卷期：32(2)
- 关键词：水平井 ; horizontal wells ; 大位移井 ; extended reach well
- 页码：p.71-74
- 图表：2 tables, 5 refs.
- 分类号：2000
- issnNo：ISSN1000-0976
- isbnNo：CN51-1179/TE
摘要
The Gaoping-1 well is the first extended-reach horizontal well with the displacement/vertical depth of 4 operated by the Sinopec Shengli Oilfied Company.For the purpose of reducing and overcoming the downhole torque and drag,well trajectory is effectively controlled by the following key techniques: optimal design of well trajectory,proper selection of lower bottomhole assembly and drilling parameters,engineering guarantee measures,adjustable drilling fluids properties,etc.After well completion,the displacement/vertical depth of this well reached up to be 4.0198 and its lateral section was 3462.07 m long.In conclusion,(1) the single-added track of whipstock with a relatively low build-up rate will be more adaptable for the optimal design of horizontal well trajectory with long lateral sections;(2) the proper selection of bottomhole assembly,drilling parameters,and drilling bits at specific areas will reduce the ratio of slide drilling at the long lateral sections;and(3) water-base drilling fluids will be widely used in the extended-reach wells.
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