halite cementation and carbonate diagenesis of intra


Origin of carbonate cements with implications for ...

herr, J, Reuning, L, Kukla, PA (2009) Halite cementation and carbonate diagenesis of intra-salt reservoirs from the Late Neoproterozoic to Early Cambrian Ara Group (South Oman Salt Basin). Sedimentology 56(2): 567 – 589 . Drusy cement: sparry calcite cement lining the pores wall of a limestone, it has the characteristic of increasing in crystal size toward the pore center Dunham classification: carbonate rock classification put forth by Dunham (1962); widely adopted in the international petroleum industry because its simplicity and ease of application with ...

Diagenesis in Geology: Definition, Process & Examples ...

Diagenesis consists of the physical, chemical, and/or biological changes that alter sediments during lithification. In this lesson we will look at the various diagenetic processes at work. 2. CARBONATE MINERALS 2.1 About sixty minerals have the carbonate ion in their composition. But there are only three really important carbonate minerals: calcite, aragonite, and dolomite. (In the parlance of mineralogy, the first two are said to be polymorphs.) And aragonite is unimportant in ancient rocks, because it reverts to calcite with

Intra-Zechstein sulphate platform clinothems: a clinoform ...

Here we describe 3D seismic stratigraphic architecture, potential facies and depositional model of a poorly known clinothem body: a progradational-aggradational sulphate/carbonate platform within the cyclothemic Zechstein Group. The study area is located on the United Kingdom Continental Shelf (UKCS) in Quadrants 35-38 and 41-43. The uppermost Permian Zechstein Group was deposited in supra ... Nov 06, 2019· Diagenesis on the sea floor – This is part of the How To…series on carbonate rocks Seafloor carbonate diagenesis encompasses the vadose intertidal-supratidal, the phreatic shallow subtidal lagoon and platform, deeper water slopes below the photic zone, to bathyal ocean floors. This post deals with the shallow end of the action. Physical and chemical changes to carbonate sediment …

Composition and diagenesis of ancient Shali city buildings ...

Diagenesis included transportation of salt materials from the nearby Fetnas Lake and mixing with some sand and clays as mortar pressed into the voids between the frameworks (Kerchief blocks). This resulted in dehydration, gypsum crystallization, and halite cementation. Porosity estimates in the carbonate world must often allow for a mix of minerals, calcite and dolomite with distinctly different grain densities – plus possibly anhydrite and halite. Determination of component percentages now requires multiple measurements and equations: two components require two measurements, etc.

(PDF) Halite cementation and carbonate diagenesis of intra ...

Halite cementation and carbonate diagenesis of intra-salt reservoirs from the Late Neoproterozoic to Early Cambrian Ara Group (South Oman Salt Basin) slate grinding equipment in india - hauptmeijerverkeer.nl. slate grinding equipment in india. slate process,slate quarry and processing plant,slate crusher - slate grinding equipment in india,11 Feb 2014 company provide quarry plant machine for India, Oman, Slate crusher machine and grinding mill plant for sale in cathayphillipsBajaj - Compare India - IBNLiveResults 1 - 10 of 20 Bajaj ...

Carbonate Glossary - SEPM Strata

Drusy cement: sparry calcite cement lining the pores wall of a limestone, it has the characteristic of increasing in crystal size toward the pore center Dunham classification: carbonate rock classification put forth by Dunham (1962); widely adopted in the international petroleum industry because its simplicity and ease of application with ... Halite cementation and carbonate diagenesis of intra‐salt reservoirs from the Late Neoproterozoic to Early Cambrian Ara Group (South Oman Salt Basin) Article Full-text available

Diagenesis and its impact on reservoir quality for the ...

Mar 22, 2017· The carbonate cements are widespread in study area and mainly composed of authigenic calcite; ferrocalcite and dolomite are rare. Carbonate cement percentage is between 1% and 20%, and the average ups to 7.18% (Fig. 5b and 5d). According to the output appearance of carbonate cements, it can be divided into 2 stages (early and late) which is ... Causes the grains to cement together (during cementation) Cementation. ... Dolomite, feldspar and mica, halite and gypsum, organic matter. Other important constituents of sed rocks (6) Dolomite. ... Carbonate shells of tiny planktonic organisms (under pelagic) Silica ooze.

CiteSeerX — Halite cementation and carbonate diagenesis of ...

BibTeX @ARTICLE{herr09halitecementation, author = {Johannes herr and Lars Reuning and Peter A. Kukla and Ralf Littke and Janos L. Urai and Michael Siemann and Zuwena Rawahi and Daniel Ariztegui}, title = {Halite cementation and carbonate diagenesis of intra-salt reservoirs from the Late Neoproterozoic to Early Cambrian Ara Group (South Oman Salt Basin}, journal = {Sedimentology ... @article{osti_1339255, title = {Evaluation of formation water chemistry and scale prediction: Bakken Shale}, author = {Thyne, Geoffrey and Brady, Patrick}, abstractNote = {Determination of in situ formation water chemistry is an essential component of reservoir management. This study details the use of thermodynamic computer models to calculate reservoir pH and restore produced water analyses ...

Numerical model of halite precipitation in porous ...

However, halite cementation in the pore space can often result in low porosity and permeability in sedimentary formations (Dronkert and Remmelts 1996, Purvis and Okkerman 1996), and these processes are usually bonded to the nearby salt dome. Hence, … Most halite occurs as intergranular cement, but some halite is present as intragranular cement within framework feldspars and lithic fragments. Halite is easily removed from a sandstone during coring, slabbing, and thin-section preparation techniques that do not use oil-based fluids and muds, so the amount of porosity in these samples that is a ...

Sedimentary processes controlling halite deposition ...

Bottom-growth predominates during evaporation; halite dissolution during flooding creates insoluble residues beneath anhydrite or carbonate. Diagenesis of shallow water evaporites is driven by brine evolution in the depositional environment. Deeper water deposition is characterized by isolation of surface water from basin floor sediments. Early diagenesis mainly represented by replacement dolomitisation, preserves original sedimentary textures, and generates porosities of between 1 -14%. Intermediate diagenesis includes cementation by dolomite, halite and anhydrite which partially occludes pores and is contemporaneous with a first hydrocarbon charge.

Origin and deformation of intra-salt sulphate layers: an ...

Jan 29, 2014· herr J, Reuning L, Kukla PA, Littke R, Urai JL, Siemann M, Rawahi Z (2009) Halite cementation and carbonate diagenesis of intra-salt carbonate reservoirs of the Late Neoproterozoic to Early Cambrian Ara Group (South Oman Salt Basin). prediction of deeply buried Permian sandstones in Norwegian sector of the Central Graben. The reservoir quality of sandstones at any buried depth is controlled by (1) the initial depositional porosity and permeability, (2) the extent of both mechanical and chemical compaction, and (3) type and amount of pore-filling cement (Worden and Morad 2009).

DIAGENETIC CARBONATE AND EVAPORITE MINERALS IN …

carbonate cements, (ii) anhydrite, halite and baryte cements, (iii) at least two generations of authigenic illite, and (iv) significant secondary porosity created by cement and framework-grain dissolution. The creation and destruction of secondary porosity is the result of changes in Halite cementation and carbonate diagenesis of intra‐salt reservoirs from the Late Neoproterozoic to Early Cambrian Ara Group (South Oman Salt Basin) Article Full-text available

Dr. Lars Reuning — Paläontologie und Historische Geologie

"Halite cementation and carbonate diagenesis of intra-salt reservoirs from the Late Neoproterozoic to Early Cambrian Ara Group (South Oman Salt Basin)." Sedimentology 56(2): 567-589. Groeneveld, J., D. Nurnberg, R. Tiedemann, G. J. Reichart, S. Steph, L. Reuning, D. Crudeli and P. Mason (2008). "Foraminiferal Mg/Ca increase in the Caribbean ... Start studying GEOL 1121 - Ch8. Learn vocabulary, terms, and more with flashcards, games, and other study tools.

Origin and deformation of intra-salt sulphate layers: an ...

Jan 29, 2014· herr J, Reuning L, Kukla PA, Littke R, Urai JL, Siemann M, Rawahi Z (2009) Halite cementation and carbonate diagenesis of intra-salt carbonate reservoirs of the Late Neoproterozoic to Early Cambrian Ara Group (South Oman Salt Basin). Understanding Low resistivity heterogeneous carbonate pays with variable 'm' (cementation Factor) ... environment, diagenesis, structural etc. Carbonates are more prone to diagenesis as compared to clastics which is responsible for change in porosity system of the reservoirs. ...

Tuesday Oral Presentations - ACE 2020 Home

Carbonate Cementation in Lower Jurassic Jeanne D'Arc Formation, Terra Nova Oil Field, Newfoundland: Implications for Reservoir Quality B. J. Olanipekun, K. Azmy Theme 2: Carbonate and Evaporite Depositional Systems: Subsurface, Outcrop, & Modern II (SEPM) (O) Although most gas volumes in northern Netherlands are produced from Rotliegend reservoirs, Late Permian Zechstein reservoirs have been an exploration target for the last decades. Most Zechstein gas reservoirs are found in the Zechstein 2 Carbonate Member, but some minor findings are reported from the platform facies of the thinner Zechstein 3 Carbonate Member.

Diagenesis and Preservation of Porosity in Norphlet ...

As a result of these reactions, late carbonate cements were not abundant. Thermochemical sulfate reduction (275°-356°+F or 135°-180°+C) has been of particular importance in the deep Norphlet. Reaction of hydrocarbons with anhydrite has resulted in the local removal of nodular anhydrite and has also affected gas quality (i.e., H 2 S content). Halite cementation and carbonate diagenesis of intra-salt reservoirs from the Late Neoproterozoic to Early Cambrian Ara Group (South Oman Salt Basin) By Johannes Schönherr, Lars Reuning, Peter A. Kukla, Ralf Littke, János Urai, Michael Siemann and Zuwena Rawahi

Diagenesis and Porosity - SEPM Strata

Summary Most carbonates are extremely susceptible to mineralogical and textural change, cementation and dissolution. These alterations can occur at any time from initial depostion to deep burial. Most diagenetic changes affect porosity and thus must be considered in the exploration for carbonates .. Diagenesis of carbonates begins at deposition and continues during burial and uplift (left figure). Halite crystals are normally colorless and exhibit low relief, but they may appear dusty due to the great abundance of solid and liquid inclusions. Halite can occur as a poikilotopic cement in either carbonate or siliciclastic strata. Anhydrite – CaSO4, orthorhombic. Gypsum – CaSO4 • 2H2O, monoclinic

Diagenetic Controls on Pre-Cambrian-Cambrian Ara Carbonate ...

Early diagenesis mainly represented by replacement dolomitisation, preserves original sedimentary textures, and generates porosities of between 1-14%. Intermediate diagenesis includes cementation by dolomite, halite and anhydrite which partially occludes pores and is contemporaneous with a first hydrocarbon charge. Halite cementation and carbonate diagenesis of intra-salt reservoirs from the Late Neoproterozoic to Early Cambrian Ara Group (South Oman Salt Basin) JOHANNES HERR*1, LARS REUNING, PETER A. KUKLA, RALF LITTKE, JANOS L. URAI*, MICHAEL SIEMANN§ and ZUWENA RAWAHI–

final 6 - carbonate reef and diagenesis at University of ...

- active zone (water forced thorugh sediments by waves/tide/current, pore with sea water, no leaching in shallow marine -> random aragonite) and stagnant zone (little or no water circulation though sediment, bacterial control, water saturated -> little cementaion) Diagenesis of the carbonates occurred in contact with saline Mg-Ca-chloride brines evolved through anhydrite and halite precipitation. Skeletal mold formation, anhydrite cementation, dolomitization, and high Sr calcite cementation associated with celestite are …

Deposition, Diagenesis, and Porosity Development of the ...

DEPOSITION, DIAGENESIS AND POROSITY DEVELOPMENT OF THE MIDDLE DEVONIAN, LUCAS FORMATION IN THE WEST BRANCH OIL FIELD, OGEMAW COUNTY, MICHIGAN Scott Gregory Park, M.S. Western Michigan University, 1987 The Lucas Formation in the West Branch Oil Field contains over 1000 feet of carbonates and evaporites deposited in restricted marine environments. Late halite cementation in the deep burial realm therefore could be explained by partial dissolution of early halite cement due to temperature and pressure increase during the ... P. A. Kukla et al., "Halite cementation and carbonate diagenesis of intra‐salt reservoirs from the Late Neoproterozoic to Early Cambrian Ara Group (South Oman ...