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Ultradeepwater H_2S Scavenger for Oil Gas Production

机译：用于石油和天然气生产的超深水H_2S清除剂

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摘要

The harsh conditions found in the Ultradeepwater reservoirs have created technical challenges to oil exploration. Manage the combination of high temperature, pressure, salinity and presence of H_2S in the reservoir is one of the challenges found in this scenario that increases the operational complexity. To attend this scenario the use of chemical compounds, called as H_2S scavengers, rises as an option to decrease the sour gas effects. This product could be injected into the wells via umbilical or gas lift. Both applications need specific compatibility tests. Once, the H_2S scavenger efficiency test is not an exclusive pass criterion for the product approval. It must attend to some requirement to ensure that the product will not perform in a negative way in the structural integrity and in the process. In this present work, it was tested two types of chemicals as H_2S scavenger, their performance and specific compatibility tests were evaluated. Tests showed that glycol soluble scavenger presented better performance than the water soluble scavenger. Moreover, due to the high salinity environment the water soluble scavenger has scale issues. It intensifies the inorganic scale because of its alkaline character. This behavior was found in the produced water and completion fluid compatibility tests.
机译：超深水油藏中发现的严酷条件为石油勘探带来了技术挑战。在这种情况下，管理储层中高温，高压，盐度和H_2S的存在的组合是增加操作复杂性的挑战之一。为了解决这一问题，人们增加了使用称为H_2S清除剂的化学化合物的选择，以减少酸性气体的影响。该产品可通过脐带或气举注入井中。这两个应用程序都需要特定的兼容性测试。曾经，H_2S清除剂效率测试不是产品批准的排他性通过标准。它必须满足一些要求，以确保产品不会在结构完整性和过程中产生负面影响。在当前的工作中，它测试了两种化学物质作为H_2S清除剂，并对它们的性能和特定的相容性测试进行了评估。测试表明，可溶于乙二醇的清除剂比可溶于水的清除剂具有更好的性能。此外，由于高盐度环境，水溶性清除剂具有结垢问题。由于其碱性，它会增强无机垢。在采出水和完井液相容性测试中发现了这种现象。

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