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dc.contributor.authorTrinh, Quoc Nghia
dc.contributor.authorHagen, Simon Alexander
dc.contributor.authorStrømsvik, Helene
dc.contributor.authorLarsen, Trond Erik
dc.contributor.authorGrøv, Eivind
dc.description.abstractHydraulic fracturing is one of the most common methods to determine in situ rock stress. The interpretation of the shut-in pressure to determine the minor principal stress is an important element of this method, and many different methods to interpret shut-in pressure have been studied and developed throughout the years. Each method has its advantages and disadvantages. With more than 50 years of research and development within the rock stress measurement field, especially in HF, SINTEF has established two practical ways of defining shut-in pressure. These methods are independent and termed zero flow and water hammer. The zero flow method has been used by SINTEF in more than 130 projects over the last 30 years. The methods clearly differ from the other methods as they are based on singular events in the development of pressure/flow versus time which enables us to read the shut-in pressure directly during testing. In this paper, a comparison is made between different methods for interpretation of shut-in pressure, including 12 existing methods and the 2 SINTEF methods. Comprehensive laboratory tests were performed, and a field test was selected from SINTEF’s database for demonstration and comparison of the methods. The SINTEF methods have been developed mainly for use in hard rock environment where the rock is a jointed aquifer and with low permeability. The application of the two methods has traditionally been hydroelectric power development, different types of tunnel, and cavern projects, and also in mineral mining. The methods have not been used in deep petroleum applications such as oil wells or offshore in porous rock types.en_US
dc.rightsCC BY 4.0*
dc.subjectIn situ rock stress measurementen_US
dc.subjectHydraulic fracturingen_US
dc.subjectLaboratory test for hydraulic fracturingen_US
dc.subjectField test for hydraulic fracturingen_US
dc.titleTwo New Methods for Defining Shut‑In Pressure in Hydraulic Fracturing Testsen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.rights.holder© 2022 The authorsen_US
dc.source.journalRock Mechanics and Rock Engineeringen_US
dc.relation.projectNorges forskningsråd: 320654en_US

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CC BY 4.0
Except where otherwise noted, this item's license is described as CC BY 4.0