老油田挖潜增效
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入井前“休眠”,下井后“苏醒”挡砂
Qi Lu Wan Bao· 2025-12-30 16:12
Core Insights - The article discusses the challenges and innovations in oil extraction at the Linpan Oilfield, particularly focusing on the implementation of shape memory screen pipe technology to address sand control issues in complex geological conditions [1][2]. Group 1: Challenges in Oil Extraction - The Linpan Oilfield is characterized by thin oil reservoirs and numerous faults, making it a "geological maze" that complicates oil extraction [1]. - Traditional sand control methods have proven ineffective, with 40% of production wells requiring sand prevention measures [1][2]. Group 2: Technological Innovations - In 2022, a collaboration between the Linpan Oilfield and Sinopec Petroleum Engineering Research Institute led to the first large-scale industrial application of shape memory screen pipe technology in China [1][2]. - The shape memory screen pipe expands upon encountering specific temperatures, effectively blocking sand while supporting the wellbore [2]. Group 3: Successful Implementation - The first test well, Lin 41-side 26, showed significant improvements, with daily liquid production reaching up to 23 tons and stable oil production at around 4 tons, exceeding expectations by 50% [3]. - The successful operation of this well provided confidence for further applications of the technology in more complex geological conditions [3][4]. Group 4: Continuous Improvement and Future Plans - Following initial success, the teams faced challenges, such as uneven expansion of the screen pipe, which were addressed through collaborative problem-solving and design optimization [4]. - The technology has now been successfully applied in 10 wells with varying conditions, laying a solid foundation for future applications and potential replication in other oilfields [4][5]. - Future plans include advancing multi-layer segment sand control and research on filling techniques for horizontal wells, aiming to enhance efficiency in aging oilfields across the country [5].