| 海上“落鱼”井实施打捞与侧钻方案的经济分析 |
| 投稿时间：2019-01-15 修订日期：2019-01-15 点此下载全文 |
| 引用本文：陈立强,杨旭才,王赞,等.海上“落鱼”井实施打捞与侧钻方案的经济分析[J].钻探工程,2019,46(5):39-43,64.CHEN Liqiang,YANG Xucai,WANG Zan,et al. Economic analysis for offshore well fishing and sidetracking scheme[J]. Drilling Engineering, 2019,46(5):39-43,64. |
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| 中文摘要:井下“落鱼”打捞工期的不确定性导致施工成本不可控，制定合理的打捞经济决策点至关重要。本文以渤海油田某“落鱼”井为例，不打捞“落鱼”则需在“落鱼”上部进行套管开窗侧钻，为两开井身结构，打捞“落鱼”则在套管鞋下裸眼侧钻，为一开井身结构，放弃打捞或者盲目打捞都并非最经济的方案。通过对冲砂打捞工期进行量化，提出了经济工期和决策工期，通过现场尝试冲砂打捞作业，在决策工期内分析其作业难度，并判断是否能够在经济工期内完成作业，最大程度降低总体实施成本，提高油田开发经济效益。渤海油田A井应用该决策方法，共节约费用近420万元。提出的“落鱼”井打捞经济工期和决策工期计算方法具有一定的推广价值。 |
| 中文关键词:“落鱼” 打捞 侧钻 经济工期 决策工期 |
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| Economic analysis for offshore well fishing and sidetracking scheme |
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| Abstract:The uncertainty of fishing schedules makes operation costs uncontrollable, and it is of vital importance to formulate a proper economic decision point. This paper takes a certain fishing well in Bohai Oilfield as an example. Sidetracking from above the fish was necessary without fishing, or from below the casing shoe with fishing. Abandoning fishing or fishing blindly was not the most economical solution. The two concepts i. e., the economic operation period and the decision-making period, were proposed by quantifying the fishing period. Through field fishing attempts, the difficulty of the operation was analyzed during the decision-making period, and it was determined whether the operation can be completed within the economic period; thus minimizing overall operation costs and improving economic benefits of oilfield development. This decision-making method was applied at Well A in Bohai Oilfield, saving a total of nearly 4.2 million. The calculation method for the economic fishing period and the decision-making period proposed in this paper is worthy of promotion. |
| keywords:fish fishing sidetracking economic construction period decision-making period |
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