Petrographic constraints on models of intergranular pressure solution in quartzose sandstones

Houseknecht, David W.; Hathon, Lori

doi:10.1016/0883-2927(87)90005-9

Cited by 45 publications

(27 citation statements)

References 25 publications

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“…Houseknecht, 1988;Bjorkum et al, 1993;Walderhaug, 1994a, b). The low VES halted stylolitisation in the Skagerrak Formation sandstones and reduced stress on the grain framework and grain contacts (Fig.…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

Exceptional reservoir quality in HPHT reservoir settings: Examples from the Skagerrak Formation of the Heron Cluster, North Sea, UK

Stricker

Jones

Sathar

et al. 2016

Marine and Petroleum Geology

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(2016) 'Exceptional reservoir quality in HPHT reservoir settings : examples from the Skagerrak Formation of the Heron Cluster, UK, North Sea.', Marine and petroleum geology., 77 . pp. 198-215. Further information on publisher's website: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. cementation and has had little to no effect on porosity preservation. The formation of welldeveloped authigenic chlorite (>70% surface coating) and, to a lesser extent illite clay coats with burial had a positive effect on porosity preservation even though permeability was marginally reduced in the illite-rich sandstones. A schematic porosity and quartz cement evolution model has been developed which allows for pre-drill prediction of reservoir quality in the Heron Cluster and provide valuable insights for other complex high-pressure hightemperature reservoirs.

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Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

Exceptional reservoir quality in HPHT reservoir settings: Examples from the Skagerrak Formation of the Heron Cluster, North Sea, UK

Stricker

Jones

Sathar

et al. 2016

Marine and Petroleum Geology

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“…This excess of dissolved silica migrates by diffusion inside these grain-to-grain contacts and from the grain-to-grain contacts into the surrounding pore space. Oversaturation of the bulk pore water in silica leads to the precipitation of the solute as euhedral quartz overgrowths on the free surfaces of the grains [e.g., Rutter, 1976;Houseknecht, 1988;Palciauskas and Domenico, 1989;Wahab, 1998]. This phenomenon is called "pervasive pressure solution transfer" (PPST).…”

Section: Introductionmentioning

confidence: 99%

Pervasive pressure solution transfer in a quartz sand

Revil¹

2001

J. Geophys. Res.

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Abstract. The kinetics of deformation of a quartz aggregate by pervasive pressure solution can be, under certain conditions of temperature and grain size, strongly dependent upon the diffusivity of silica into the grain-to-grain contacts. An analysis of the factors affecting this key parameter (and less well constrained in the analysis of the problem of rock deformation by pressure solution) is presented. This analysis is based on recent advances on studying silica surfaces and particularly on the existence of a silica gel layer on the silica surfaces undergoing dissolution. By reinvestigating the electroviscous effect occurring at the grain-to-grain contact the present analysis shows that the diffusivity of silica at the grain-to-grain contacts is likely to be relatively similar to that in the bulk pore water (maybe 1 order of magnitude smaller but not more). This contradicts the previous work by Rutter [ 1976], which has been the key reference used in many subsequent papers to justify an extremely low value for the diffusivity of silica at the grain-to-grain contacts (5 orders of magnitude smaller than the diffusivity of silica in free water). This finding has dramatic implications concerning the deformation rate of quartz sands and sandstones by pressure solution in sedimentary basins with regard to (1) the limiting step affecting the kinetics of the process (diffusion of the solute or dissolution/precipitation chemistry) and (2) the existence of a thermodynamic equilibrium state when deformation by pressure solution occurs over geological timescales. A poroviscoplastic model is used to describe deformation associated with pervasive pressure solution transfer in quartz sands. This model is shown to be consistent with the current state of knowledge of the surface chemistry of silica. In addition, the comparison between this model and both laboratory and field data is rather good.

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“…On the basis of petrographic and microstructural observations, stress-related dissolution of material within grain contacts, or Intergranular Pressure Solution (IPS), is considered an important lithification, compaction and deformation mechanism in low-grade metamorphic rocks (Rutter‚ 1983;Houseknecht‚ 1984Houseknecht‚ , 1987Houseknecht‚ , 1988Bell and Cuff‚ 1989;Tada and Siever‚ 1989). IPS is also recognized as one of the main factors controlling the geological evolution of porosity and permeability, and hence capacity and productivity, of (potential) hydrocarbon reservoirs (Pittman, 1979;Hutcheon‚ 1983;Carrozzi and Von Bergen‚ 1987), as well as a possible mechanism controlling fault creep, fault gouge compaction and fault strength recovery (Rutter and Mainprice, 1978;Angevine et al, 1982;Lehner and Bataille, 1984;Sleep and Blanpied, 1992;Sleep, 1995).…”

Section: Introductionmentioning

confidence: 99%

Intergranular Pressure Solution in Nacl: Grain-To-Grain Contact Experiments under the Optical Microscope

Spiers

Schutjens

1999

Oil & Gas Science and Technology - Rev. IFP

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Résumé -Dissolution sous contrainte dans NaCl : expériences de contact grain à grain sous microscope optique -La dissolution sous contrainte (IPS -Intergranular Pressure Solution) représente un mécanisme de lithification, de compaction et de déformation à l'échelle géologique pour une large gamme de roches. Les études expérimentales d'IPS réalisées sur des agrégats de quartz n'ont pas été couronnées de succès en raison d'un taux faible d'IPS, et les expériences IPS réalisées en utilisant une halite saturée comme analogue de roche Hickman et Evans, 1991) ont laissé des incertitudes quant au détail des mécanismes IPS et à la structure/saturation au contact du grain dans ce matériau. La présente étude fait état de quatre expériences de dissolution de contact réalisées sous microscope optique afin d'étudier le mécanisme et la cinétique de l'IPS pour des contacts simples halite/halite et halite/verre, chargés en eau salée (température ambiante). Des forces normales de contact dans la gamme de 1,0 à 2,6 N ont été appliquées en présence d'eau salée saturée en NaCl, induisant des pressions de 0,8 à 7,4 MPa. Des pertes de masse et des convergences -fonction du temps -ont été observées pour tous les contacts. Dans tous les cas, le fait de charger le contact (ou d'augmenter la charge sur le contact) a conduit à la formation immédiate d'une morphologie de contact rugueuse, composée d'un motif d'îles et de canaux, contrôlé par des caractéristiques cristallographiques, à l'échelle de quelques microns. Cette microstructure non équilibrée a évolué dans le temps vers une face de contact optiquement plate. Le processus de convergence/lissage doit donc avoir compris une diffusion de masse en dehors du contact et une expulsion de la saumure par l'intermédiaire d'une phase d'eau salée connectée, à l'intérieur du contact. Le fait qu'une structure rugueuse à petite échelle ait persisté dans des contacts ayant évolué vers un aspect optiquement plat n'est pas établi, bien que les observations au microscope à balayage élec-tronique faites après l'essai le suggèrent. Si ce phénomène était confirmé, son amplitude serait inférieure à 500 nm. Les mesures des taux de dissolution ont permis une comparaison avec un modèle pour l'IPS. Les analyses suggèrent que la diffusion en solution, à travers le contact, contrôlait certainement le taux. La structure du contact et la diffusivité varient alors avec la force de contact et la convergence. Les résul-tats sont largement en adéquation avec ceux des expériences précédentes sur la compaction, réalisées en utilisant de la poudre d'halite saturée. Les divergences avec les résultats d'autres chercheurs, issus d'expériences de dissolution sur des contacts simples, peuvent être expliquées en termes de différence de configuration d'expérience et de concurrence entre les forces motrices.Mots-clés : dissolution sous pression, contact de grain, diffusion, dissolution de l'halite. Science and Technology -Rev. IFP, Vol. 54 (1999) Oil & Gas

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Petrographic constraints on models of intergranular pressure solution in quartzose sandstones

Cited by 45 publications

References 25 publications

Exceptional reservoir quality in HPHT reservoir settings: Examples from the Skagerrak Formation of the Heron Cluster, North Sea, UK

Exceptional reservoir quality in HPHT reservoir settings: Examples from the Skagerrak Formation of the Heron Cluster, North Sea, UK

Pervasive pressure solution transfer in a quartz sand

Intergranular Pressure Solution in Nacl: Grain-To-Grain Contact Experiments under the Optical Microscope

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