Gazprom Neft Achieves Record Production at Achimovsky strata

Source: www.gulfoilandgas.com 2/4/2020, Location: Asia

Gazprom Neft has become the first company in Russia to use a unique technology — hybrid multi-stage fracking — to increase oil inflow in Achimovsky strata, following testing at Gazpromeft Noyabrskneftegaz’s Vyngayakhinskoye field in the Yamalo-Nenets Autonomous Okrug. Works undertaken suggest initial production, from a single well, currently stands at 300 tonnes per day — three times higher than anticipated. This technology is expected to be rolled-out throughout the company’s Vyngayakhinskoye, Ety-Purovskoye, Karamovskoye and other fields with Achimovsky reserves in the future, facilitating additional production of 28 million tonnes of oil, including seven million tonnes by 2025.

Hybrid fracking involves using process fluids, with various properties and characteristics, in combination. The advantage over standard fracking here lies in its more extensive coverage, due to longer fissures being created, and the more extensive network of micro-fissures created (like cobwebs) around these. This effect is achieved by adjusting injection fluid and proppant* volumes and formulations, and increasing the speed at which these are injected.

An eight-stage fracking operation was undertaken at the Vyngayakhinskoye field, during which a new fracking fluid was tested, significantly increasing fracking efficiency. The outcomes of this work indicate an initial production rate three times higher than anticipated.

The objective in testing is to verify the hypothesis regarding in-strata fissure-network formation, and to test the technology’s efficiency. In the course of desk research specialists from Gazpromneft-GEO, the Gazprom Neft Science and Technology Centre, Gazpromneft-Noyabrskneftegaz and the MIPT Centre for Engineering and Technology developed a specially designed fracking technique which increases production under the geological conditions inherent in the Vyngayakhinskoye field. The outcomes of this work have confirmed the technical feasibility for creating fissures up to three to five times longer than standard — i.e., of more than 500 metres.

These initial testing outcomes could, according to specialists, significantly change accepted opinions on optimum criteria for developing Achimovsky strata, and will facilitate a major step forward in reducing capital costs per tonne of oil.

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Related Categories: Consultancy  Engineering  FEED  General  Maintenance and Repair  Process Technology Licensing  Production Engineering  Project & Resource Management 

Related Articles: Consultancy  Engineering  FEED  General  Maintenance and Repair  Process Technology Licensing  Production Engineering  Project & Resource Management 


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