Oil Fingerprinting Technology for Well and Reservoir Management

Tuesday, 15 January 2019 Read 368 times
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Hydrocarbons in oil fields are affected by various secondary processes, such as biodegradation, migration of deep-seated gas, movement of formation water, and evaporation. The degree of hydrocarbon changes depends on many factors: reservoir temperature, tectonic activity, dissection of productive strata, activity of water-bearing horizons, etc. In this connection, oil initially migrated from one source rock varies differentially in different reservoirs and parts of deposits. Using high-resolution gas chromatography, it is possible to identify differences between oil samples from different formations and formation sections. Assessing the degree of secondary changes allows you to identify oils of various reservoirs, in other words, to determine the unique appearance of oils - “oil fingerprints” or otherwise the final members. Having a set of unique “oil fingerprints” - the end members representing the reservoirs being developed, it becomes possible to determine the contribution of individual reservoirs to the production of mixed products. This information can be very valuable both for solving current development management tasks and optimizing a long-term oil field development strategy. This paper presents the results of a pilot project on the introduction of geochemical analysis of oil using oil fingerprinting technology based on high-resolution gas chromatography into the development management process of the Astokhsky section of the Piltun-Astokhsky oil and gas condensate field. operating several layers with the subsequent practical implementation in production. In the course of work, the broader possibilities of the method were also identified, namely, monitoring of interfacial flows, clarification of the geological structure of the field, identification of leaks in production wells.

Author:

Dmitry Pavlov in 1999, he graduated from Kazan State University with a degree in Geology of Oil and Gas. In 1999 - 2004 he worked in a number of service companies in the oil and gas sector. He was engaged in geological and hydrodynamic modeling of oil fields in the Ural-Volga region and Western Siberia. In 2005 he worked as a development engineer in the service company TGT Oil & Gas Service. He was engaged in research of optimization of the waterflooding scheme of the Lehvayr oil field (Sultanate of Oman). In 2005-2007 Worked as Lead Development Engineer at TNK-BP Management. He was engaged in the optimization of waterflooding schemes for the Orenburgneft fields. From 2007 to the present, he has been working as a lead development engineer for Sakhalin Energy Investment Company Ltd. (Sakhalin Energy).  He is responsible for managing the current development, as well as optimizing long-term development plans for the Piltun-Astokhsky oil and gas condensate and Lunsky gas and condensate fields located on the shelf of Sakhalin Island (RF). His area of ​​interest is the development of oil rims, modern methods for monitoring and managing the development of oil and gas condensate fields, improving efficiency and methods for improving the development of offshore fields.

 

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