Tight rock wettability and its relationship to other petrophysical properties: A Montney case study.
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| Title: | Tight rock wettability and its relationship to other petrophysical properties: A Montney case study. |
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| Authors: | Javaheri, Ali1, Dehghanpour, Hassan1 dehghanp@ualberta.ca, Wood, James2 |
| Source: | Journal of Earth Science. Apr2017, Vol. 28 Issue 2, p381-390. 10p. |
| Subject Terms: | *Petrophysics, *Wetting, *Porosity, *Permeability, *Mineralogy, *Sedimentary basins |
| Abstract: | Understanding and modelling the wettability of tight rocks is essential for designing fracturing and treatment fluids. In this paper, we measure and analyze spontaneous imbibition of water and oil into five twin core plugs drilled from the cores of a well drilled in the Montney Formation, an unconventional oil and gas play in the Western Canadian Sedimentary Basin. We characterize the samples by measuring the mineralogy using XRD (x-ray diffraction), total organic carbon content, porosity, and permeability. Interestingly, the equilibrated water uptake of the five samples is similar, while, their oil uptake increases by increasing the core porosity and permeability. We define two wetta-bility indices for the oil phase based on the slope and equilibrium values of water and oil imbibition curves. Both indices increase by increasing porosity and permeability, with the slope affinity index showing a stronger correlation. This observation suggests that part of the pore network has a stronger affinity to oil than to water. We also observe that the two indices decrease by increasing neutron porosity and gamma ray parameters measured by wireline logging tools. The samples with higher gamma ray and neutron porosity are expected to have greater clay content, and thus less effective porosity and permeability. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: enr DbLabel: Energy & Power Source An: 122726899 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Tight rock wettability and its relationship to other petrophysical properties: A Montney case study. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Javaheri%2C+Ali%22">Javaheri, Ali</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Dehghanpour%2C+Hassan%22">Dehghanpour, Hassan</searchLink><relatesTo>1</relatesTo><i> dehghanp@ualberta.ca</i><br /><searchLink fieldCode="AR" term="%22Wood%2C+James%22">Wood, James</searchLink><relatesTo>2</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Earth+Science%22">Journal of Earth Science</searchLink>. Apr2017, Vol. 28 Issue 2, p381-390. 10p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Petrophysics%22">Petrophysics</searchLink><br />*<searchLink fieldCode="DE" term="%22Wetting%22">Wetting</searchLink><br />*<searchLink fieldCode="DE" term="%22Porosity%22">Porosity</searchLink><br />*<searchLink fieldCode="DE" term="%22Permeability%22">Permeability</searchLink><br />*<searchLink fieldCode="DE" term="%22Mineralogy%22">Mineralogy</searchLink><br />*<searchLink fieldCode="DE" term="%22Sedimentary+basins%22">Sedimentary basins</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Understanding and modelling the wettability of tight rocks is essential for designing fracturing and treatment fluids. In this paper, we measure and analyze spontaneous imbibition of water and oil into five twin core plugs drilled from the cores of a well drilled in the Montney Formation, an unconventional oil and gas play in the Western Canadian Sedimentary Basin. We characterize the samples by measuring the mineralogy using XRD (x-ray diffraction), total organic carbon content, porosity, and permeability. Interestingly, the equilibrated water uptake of the five samples is similar, while, their oil uptake increases by increasing the core porosity and permeability. We define two wetta-bility indices for the oil phase based on the slope and equilibrium values of water and oil imbibition curves. Both indices increase by increasing porosity and permeability, with the slope affinity index showing a stronger correlation. This observation suggests that part of the pore network has a stronger affinity to oil than to water. We also observe that the two indices decrease by increasing neutron porosity and gamma ray parameters measured by wireline logging tools. The samples with higher gamma ray and neutron porosity are expected to have greater clay content, and thus less effective porosity and permeability. [ABSTRACT FROM AUTHOR] |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s12583-017-0725-9 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 381 Subjects: – SubjectFull: Petrophysics Type: general – SubjectFull: Wetting Type: general – SubjectFull: Porosity Type: general – SubjectFull: Permeability Type: general – SubjectFull: Mineralogy Type: general – SubjectFull: Sedimentary basins Type: general Titles: – TitleFull: Tight rock wettability and its relationship to other petrophysical properties: A Montney case study. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Javaheri, Ali – PersonEntity: Name: NameFull: Dehghanpour, Hassan – PersonEntity: Name: NameFull: Wood, James IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 04 Text: Apr2017 Type: published Y: 2017 Identifiers: – Type: issn-print Value: 1674487X Numbering: – Type: volume Value: 28 – Type: issue Value: 2 Titles: – TitleFull: Journal of Earth Science Type: main |
| ResultId | 1 |
