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Optimized Design and Research on Technology Parameters of Dual-string Steam Injection in Horizontal Well
Author: LiuHongQin
Tutor: YuLeXiang；AnJiuQuan
School: China University of Petroleum
Course: Petroleum and Natural Gas
Keywords: horizontal well dual-string steam injection technology parameters Optimized design
CLC: TE345
Type: Master's thesis
Year: 2009
Downloads: 74
Quote: 0
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Abstract
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Sieve tube completion is the main method for heavy oil horizontal well in Liaohe oilfield, accounting for 93.8% of the total completions. General steam injection is used for the horizontal wells, resulting in better use in horizontal well heel part and worse use in toe part. In this paper ,we compare several steam injection pipes for horizontal wells, then choose the best injection pipe in order to reduce the heat loss and improve the insulation effect. As the dual-string steam injection technology for horizontal wells has just started, the related supporting technology is not enough. In order to promote the use of this technology, we consider achieving horizontal wells dual-string steam injection as main goal in this paper. In order to achieve this goal, we establish several models which can calculate temperature, pressure, dry fraction and the heat loss along the wellbore during the dual-string steam injection for horizontal wells. Then we analyze the sensitivity of several parameters and process the parameters optimization. We consider the results from the calculation model with the data in Liaohe oilfield, there is less errors, which proves that the model is very accurate. The models can play an important role in guiding the construction scheme design and implementation of optimal exploitation technology in oilfield.
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CLC: > Industrial Technology > Oil and gas industry > Oil and gas development and mining > Oil field development ( reservoir engineering ) > Heavy oil field development
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