اسلاید پاورپوینت: سنگ پاره (rock) ، پرمنفذی (porosity) و ته نشسته (sedimentary)…

 

عناوین اصلی استخراج شده از این فایل پاورپوینت

عناوین اصلی استخراج شده از این فایل پاورپوینت

● Acknowledgments
● ROCK MATRIX AND PORE SPACE
● POROSITY DEFINITION
● ROCK MATRIX AND PORE SPACE
● OBJECTIVES
● CLASSIFICATION OF ROCKS
● SEDIMENTARY ROCKS
● SEDIMENTARY ROCK TYPES,
● ORIGINS OF POROSITY IN
CLASTICS AND CARBONATES
(Genetic Classification)
● PRIMARY (ORIGINAL) POROSITY
● SECONDARY (INDUCED) POROSITY
● FACTORS THAT AFFECT POROSITY
● Porosity Calculations – Uniform Spheres
● FACTORS THAT AFFECT POROSITY
● PORE SPACE CLASSIFICATION

(In Terms of Fluid Properties)
● PORE-SPACE CLASSIFICATION
● COMPARISON OF TOTAL AND EFFECTIVE POROSITIES
● MEASUREMENT OF POROSITY
● INFORMATION FROM CORES*
● CORING ASSEMBLY
AND CORE BIT
● COMING OUT OF HOLE
WITH CORE BARREL
● WHOLE CORE
● SIDEWALL SAMPLING GUN
● SIDEWALL CORING TOOL
● WHOLE CORE ANALYSIS vs.
PLUGS OR SIDEWALL CORES
● Student Questions / Answers


نوع زبان : انگلیسی حجم : ۷٫۹۸ مگا بایت
نوع فایل : اسلاید پاورپوینت تعداد اسلایدها: ۷۴ صفحه
زمان استخراج مطلب : ۲۰۱۸/۱۱/۰۲ ۰۹:۰۱:۲۰ پسوند فایل : ppt

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این مطلب در تاریخ ۲۰۱۸/۱۱/۰۲ ۰۹:۰۱:۲۰ به صورت خودکار استخراج شده است. در صورت اعلام عدم رضایت تهیه کننده ی آن، طبق قوانین سایت از روی وب گاه حذف خواهد شد. همچنین این مطلب برگرفته از وب سایت زیر است و مسئولیت انتشار آن با منبع اصلی است.

http://www.ux.uis.no/~s-skj/ResTek1-v03/Notater/Tamu.Lecture.Notes/Porosity/Lecture_02.ppt

بخشی از محتوای متن استخراج شده از این فایل ppt

بخشی از محتوای متن استخراج شده از این فایل ppt

porosity many slides contain more detailed notes that may be shown using the notes page view acknowledgments dr. walt ayers pete ۳۱۱ fall ۲ ۱ next perf short course notes ۱۹۹۹ note that many of the next slides appears to have been obtained from other primary sources that are not cited definition porosity is the fraction of a rock that is occupied by voids pores . discussion topics origins and descriptions factors that effect porosity methods of determination reservoir porosity rock matrix and pore space note different use of matrix by geologists and engineers geologist rock matrix is the grains of sandstone limestone dolomite and or shale that do not make up the supporting structure. engineer matrix is the non pore space pore space is filled with fluids. for pete ۳۱۱ the fluids of interest are water oil natural gas porosity definition porosity the fraction of a rock that is occupied by pores porosity is an intensive property describing the fluid storage capacity of rock  porosity expressed as fraction vb bulk volume of reservoir rock ft۳ vma matrix volume ft۳ vp pore volume ft۳ vb vma vp rock matrix and pore space water often exists as a thin film coating the rock grain surface. oil and gas occupy the larger pore spaces with a film of water between the rock surface and the hydrocarbons. objectives to provide an understanding of the concepts of rock matrix and porosity the difference between original primary and induced secondary porosity the difference between total and effective porosity laboratory methods of porosity determination determination of porosity from well logs classification of rocks sedimentary igneous metamorphic molten materials in deep crust and upper mantle crystallization solidification of melt weathering and erosion of rocks exposed at surface sedimentation burial and lithification rocks under high temperatures and pressures in deep crust recrystallization due to heat pressure or chemically active fluids the three major rock types are sedimentary igneous and metamorphic rocks. their classification is based on their origins. sedimentary rocks are formed from particles derived from igneous metamorphic or other sedimentary rocks by weathering and erosion. sedimentary rocks provide the hydrocarbon source rocks and most of the oil and gas reservoir rocks. igneous rocks are formed from molten material which is either ejected from the earth during volcanic activity e.g. lava flows and ash falls or which crystallizes from a magma that is injected into existing rock and cools slowly giving rise rocks such as granites. igneous rocks are of minor importance for oil exploration. rarely hydrocarbon is produced from fractured igneous rocks. metamorphic rocks are formed by subjecting any of the three rock types to high temperatures and pressures that alter the character of the existing rock. common examples of metamorphic rocks are marble derived from limestone and slate derived from shale. due to the high temperature and pressures there is very little organic matter or hydrocarbons in metamorphic rocks. sedimentary rocks clastics carbonates evaporites clastic and carbonate rocks clastic rocks consist primarily of silicate minerals are classified on the basis of grain size mineral composition carbonate rocks consist primarily of carbonate minerals i.e. minerals with a co anion group limestone predominately calcite calcium carbonate caco۳ dolomite predominately dolostone calcium magnesium carbonate camg co۳ ۲ ۳ ۲ sedimentary rock types relative abundances this slide shows the relative abundance of the major sedimentary rock types. these rocks comprise approximately ۹۹ of all sedimentary rocks including hydrocarbon source rocks and traps. sedimentary rock can be divided into two major classes. clastics sandstone conglomerate siltstone and shale comprised mainly of silicate minerals classified on the basis of grain size and mineral composition carbonates limestone and dolomite consist mainly of the carbonate minerals calcite limestone or dolomite dolostone average detrital mineral composition of shale and sandstone mineral composition shale sandstone clay minerals quartz feldspar rock fragments carbonate organic matter hematite and other minerals ۶ ۳ ۴ ۵ ۳ ۳ ۵ ۶۵ ۱ ۱۵ ۱۵ ۱ ۱ modified from blatt ۱۹۸۲ sandstone classification four major components of sandstone four components of sandstone geologist’s classification origins of porosity in clastics and carbonates genetic classification primary original secondary induced generally more complex than primary porosity primary original porosity developed at deposition typified by intergranular pores of clastics or carbonates intercrystalline and fenestral pores of carbonates usually more uniform than induced porosity fenestral windowlike secondary induced porosity developed by geologic processes after deposition diagenetic processes examples grain dissolution in sandstones or carbonates vugs and solution cavities in carbonates fracture development in some sandstones shales and carbonates examples of geologic processes include faulting and uplifting. factors that affect porosity particle sphericity and angularity packing sorting variable grain sizes cementing materials overburden stress compaction vugs dissolution and fractures primary secondary diagenetic in the geology section we show core photographs with examples of porosity. for now it is useful to note these effects porosity increases as angularity of particles increases. porosity increases as the range of particle size decreases. in contrast porosity decreases as the volume of interstitial and cementing material increases. porosity decreases as the compaction increases greater depth generally means higher overburden stresses higher compaction forces and lower porosity vugs and fractures will contribute to porosity but to understand their affect on effective porosity requires careful study of cores and special logging measurements. roundness and sphericity of clastic grains porosity porosity factors that affect porosity particle sphericity and angularity packing sorting variable grain sizes cementing materials overburden stress compaction vugs dissolution and fractures primary secondary diagenetic line of traverse using microscope cement matrix clays etc. tangential contact sutured contact long contact concavo convex contact grain packing in sandstone modified from blatt ۱۹۸۲ this example packing proximity ۴ packing density .۸ ۴ types of grain contacts packing proximity packing density a measure of the extent to which sedimentary particles are in contact with their neighbors a measure of the extent to which sedimentary particles occupy the rock volume cubic packing of spheres porosity calculations uniform spheres bulk volume ۲r ۳ ۸r۳ matrix volume pore volume bulk volume matrix volume bulk volume is a cube with length of side ۲r volume of cube a۳ or ۲r ۳ …

کلمات کلیدی پرکاربرد در این اسلاید پاورپوینت: سنگ پاره (rock), پرمنفذی (porosity), ته نشسته (sedimentary), جلد (volume), سوراخ ریز (pore), معدنی (mineral), ماتریس (matrix), سنگ ریگی (sandstone), خمیره (grain), ذره (particle),

این فایل پاورپوینت شامل ۷۴  اسلاید و به زبان انگلیسی و حجم آن ۷٫۹۸ مگا بایت است. نوع قالب فایل ppt بوده که با این لینک قابل دانلود است. این مطلب برگرفته از سایت زیر است و مسئولیت انتشار آن با منبع اصلی می باشد که در تاریخ ۲۰۱۸/۱۱/۰۲ ۰۹:۰۱:۲۰ استخراج شده است.

http://www.ux.uis.no/~s-skj/ResTek1-v03/Notater/Tamu.Lecture.Notes/Porosity/Lecture_02.ppt

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