The Practice and Cognition of Tracing with Drilling in Fish Bone Horizontal Well

Abstract:

The branch well G8-33-H1Z is the first fishbone horizontal well of Daqing. The fishbone horizontal well is one type of the branch horizontal wells, which drilling again two or more branch holes in the horizontal section of the horizontal well. This well lies in G21 block where is near to the west of Daqing oilfield Changyuan area and the northeast of G20 of the north Gaotaizi oilfield. The purpose of the drilling is using branch horizontal well to control more areal reserves and increasing drainable area to improve well production. This technique can improve the economic benefit of oilfield development, which saves drilling investment, makes full use of the upper borehole to improve the comprehensive exploitation degree of the reservoir and achieves highly efficient development using less well. This well has two horizontal branches, and puts ‘trunk-branch-trunk-branch’ into effect while drilling. The first branch designed horizontal length 150m. The second branch designed horizontal length 150m. This paper introduced the tracing with drilling process of Daqing first fishbone horizontal well, and also described the complex situations and the treatment methods while drilling wellbore trajectory and constructing well and the development effect. Finally some suggestions were put forward about tracing with drilling in fishbone horizontal well.

• Periodical: Advanced Materials Research (Volumes 594-597)
• Pages: 226-229
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.594-597.226
• Online since: November 2012
• Authors: Kai Chun Yu, Yan Zhu, Xiao Xing Li, Shi Feng Zhang
• Keywords: Drilling, Fishbone Horizontal Well, Tracking

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