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Using Horizontal Gravel-Packing Technology to Optimize Well Productivity and Field Economics: Case History, Uracoa Field, Venezuela

机译：使用水平砾石充填技术优化油井生产率和田间经济效益：案例历史，委内瑞拉Uracoa油田

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This paper summarizes the evaluation and effects ofrncompletion alternatives on the productivity and economicsrnconcerning the redevelopment of the Uracoa field in SouthernrnMonagas, Venezuela. It explains how horizontal gravel packrntechnology restored well productivity and improved longevity.rnProduction from the Uracoa Field consists of heavy crudernranging from 11° to 16° API. The initial redevelopmentrncompletion scenario used horizontal wells with slotted linersrnin open hole. However, subsequent breakthrough of waterrncaused catastrophic sand production that plugged the wellsrnwhere slotted liners were implemented. In order to producernthe Uracoa Field economically, it was necessary to perform arntechnical evaluation of in-field completion and drillingrnpractices to resolve production issues for sand control, highrnCO2 production, 13-14% asphaltene content, wellrnproductivity, and well longevity.rnAfter evaluating completion and drilling practices, horizontalrngravel packing technology was used to restore wellrnproductivity and longevity. In order to achieve optimumrnproductivity, it was necessary to do extensive fluidsrncompatibility testing to determine the overall best drilling andrncompletion practices. To date, over 65 horizontal wells havernbeen gravel packed in conjunction with a large number ofrnhighly deviated wells. These gravel packs make use of waterpackingrntechniques and maintain higher productivity evenrnafter water breakthrough.rnThe paper reviews completion and well experience withrnslotted liners, evaluates completion practices, and comparesrncompletion technologies implemented in the Uracoa Field tornachieve economic productivity. Finally, data presentedrndemonstrates the ability to maintain productivity even afterrnwater breakthrough.
机译：本文总结了完井替代方案对委内瑞拉南部莫纳加斯Uracaco油田再开发的生产率和经济性的评价和影响。它解释了水平砾石充填技术是如何恢复井井生产率和提高使用寿命的。浦那油田的生产包括API范围为11°至16°的重质原油。最初的重新开发方案是在裸眼中使用带有开槽衬管的水平井。但是，后来因水灾导致的灾难性砂生产的突破使实施缝隙衬管的井堵塞了。为了经济地生产Uracoa油田，有必要对现场完井和钻井方法进行技术评估，以解决防砂，高CO2生产，沥青质含量13-14％，生产率高和寿命长的生产问题。钻井实践中，采用水平砾石充填技术来恢复高产和长寿。为了获得最佳的生产率，有必要进行广泛的流体相容性测试，以确定总体上最佳的钻井和完井实践。迄今为止，已经有超过65口水平井被砾石充填，同时还有大量高度偏斜的井。这些砾石充填物利用了水包装技术，即使在水突破后也能保持较高的生产率。论文回顾了开槽衬管的完井和良好经验，评估了完井实践，并比较了在Uracoa油田实施的完井技术，以达到经济生产率的目的。最后，所提供的数据证明了即使突破水也能保持生产率的能力。

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