名称: | 用井间示踪方法确定剩余油饱和度分布 | 联系人: | 安彦 |
地址: | 邮编: | ||
荻浦花海电话: | 0633-8799168 | 传真: | 0633-2221116 | 数鸭子歌词
Email地址: | 发布时间 | 2009-6-13 | |
情况简介: | |||
研究内容如下：a 1. 评价油藏非均质性，包括井间连通性、平面及纵向非均质性、方向渗透性及大孔道等，为调剖堵水提供依据。 2. 确定指标：井网的体积波及系数、水淹层的厚度及渗透率的大小、平均孔道半径、流体饱和度、井网注采指标和油藏岩石的润湿性。 3. 核实断层及封闭性。 兰花品种4. 根据相邻层系井的示踪剂产出情况，判断射孔和层系间隔层性质，为层系细分调整提供依据。 5. 分析开发调整措施的有效程度。 井间示踪剂方法是一种确定井间地层参数分布较为先进的技术。其技术含量高，理论研究基础扎实，解释参数可靠。油田中广泛使用的示踪剂主要用来确定井间连通性与渗透率的变异情况，这对油田的开发调整、挖潜和三次采油的开展，具有重要的价值。 | |||
Publisher | International Petroleum Technology Conference | Language | English |
Document ID | 15312-MS | DOI | 10.2523/15312-MS |
Content Type | Conference Paper | ||
Title | Fluorescent Nanobeads: A New Generation of Easily Detectable Water Tracers | ||
Authors | Nicolas Agenet; Navid Moradi-Tehrani, Total Olivier Tillement, Université Lyon I | ||
Source | International Petroleum Technology Conference, 7-9 February 2012, Bangkok, Thailand | ||
ISBN | 978-1-61399-148-0 | ||
Copyright | 2011. International Petroleum Technology Conference | ||
Discipline Categories | 6.6 Rervoir Monitoring/Formation Evaluation 6.6.8 Tracers | ||
Preview 牧童之歌 | Abstract Rervoir monitoring is an esntial tool to optimize oil production. Among other techniques, water tracers are very uful to understand complex flow patterns that may ari between injection and production wells during waterflood operations. This paper propos an innovative approach for developing new fluorescent tracers bad on silica nanoparticles; it describes their synthesis and properties during coreflood experiments. The new nanoparticles can be coded with various fluorophores, which can be easily detected using on-site equipment offering direct tracer quantification and even on-line monitoring capabilities. Silica nanoparticles containing one or more organic dyes or lanthanide-bad fluorophores were synthesized. The versatility of the synthesis procedure allows coding the nanoparticles with theoretically dozens of tagging combinations. The sol-gel synthesis technique yields 50-nm-diameter nanoparticles which are treated to tune their surface properties. The conrvative tracer behavior of such nanoparticles is ensured by proper surface functionalization, and is demonstrated by coreflood experiments. This virtually large tracer library is combined to a unique time-delay fluorescence detection technique which allows simple on-site tracer quantification on multiple nanoparticle types with minimal sample preparation. Introduction InterWell Tracer Tests (IWTT) are routinely ud in the petroleum industry (Du and Guan 2005). This technique allows gathering informations on well-to-well connections and subsurface flow paths. Aqueous tracers can be split in two main groups upon their function: passive tracers which travel at the same velocity as the injected water and partitioning tracers which are partly soluble in oil, leading to a delay in their breakthrough. Ud along with passive tracers, partitioning tracers permit to evaluate the remaining oil saturation in the contacted zone (Tang 1991, Tang, 1992, Tang 1995, Wood 1990, Deeds 2000, Dwarakanath 1999, Jin 1995, Jin 1997, Mariner 1999). Tracers can be lected in the following families: naturally occurring tracers (isotopic or ionic composition footprints), radioactive isotopes, and chemical derivatives (Du and Guan 2005, Hutchins 1991). Each family posss its own advantages and limitation: restricting regulation on radioactive tracers can make them difficult to implement on field in some areas; chemical tracers such as fluorobenzoic acids (FBAs) have become routinely ud for field tracer campaigns as they can be detected with a low detection limit. However they require fine analys which cannot be performed in standard labs. Moreover, in each family the number of available chemical tracers remains limited when repeated tracer campaigns are required on the same field over time. This paper describes the design of nanoparticles as tracers and coreflood tests to asss their propagation in porous media. Rare-earth bad organometallic complexes are known to posss a long fluorescence lifetime. A low detection limit of the nanoparticles can be achieved by incorporating such complexes. Taking advantage of the fluorescence lifetime differences, background fluorescence from organic oil contaminant of the sample is suppresd using time-resolved fluorescence detection. The nanobeads associate the transport behavior of nanoparticles in porous media with the fluorescence properties of rare-earth elements complexes to give access to easily detectable passive tracer. | ||
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