By Jeffrey M. Lemm
This accomplished textual content and accompanying CD-ROM will give you the reader with an built-in evaluation of diagenesis and porosity evolution in carbonate petroleum reservoirs and old carbonate rock sequences.
The preliminary chapters of this quantity supply an outline of the carbonate sedimentologic method and the applying of series stratigraphic innovations to carbonate rock sequences. the character of carbonate porosity and its keep watch over through diagenesis is explored. Porosity category schemes are precise, in comparison, and their application tested. the character and features of diagenetic environments and instruments for his or her attractiveness within the old list are specified.
The center chapters of the e-book encompass a radical exam of the most important, surficial diagenetic environments, similar to general marine, evaporative marine and meteoric environments, emphasising porosity enhancing strategies illustrated via a number of case histories. There f
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The nature of the diagenetic processes activated during relative sea level perturbations and their effects on carbonate pore systems will be one of the major thrusts of the remainder of this book. SUMMARY The general concepts of sequence stratigraphy may be applied directly to carbonate sedimentary sequences. In detail, however, there are some major differences between the application of sequence stratigraphy to carbonates versus its application to siliciclastics. Perhaps the major difference relates to highstand sediment shedding in carbonates versus lowstand shedding in siliciclastics.
Basic accommodation model featuring varying eustatic cycles versus a constant subsidence rate over a time span of some 3 million years. Rate of relative sea level change is a measure of rate of addition of new accommodation space. Used withpermission of SEPM. 22 CONCEPTS OF SEQUENCE STRATIGRAPHY AS APPLIED TO CARBONATES the actual rate of addition is diminished. If this of addition of new accommodation space is at new accommodation space is filled with a minimum. 3, the rate of eustatic the sea marking each of the first two sequence fall is greater than the rate of subsidence at the boundaries rather than an unconformity as site and no new accommodation space is implied by the sequence definition given formed.
As an example, moldic porosity is commonly fabric-selectivebecause of the preferential removal of certain fabric elements from the rock, such as early removal of aragonitic ooids and bioclasts during mineral stabilization (Fig. 2). Another example is the later removal of anhydrite, gypsum, or even calcite from a dolomite matrix during the diagenetic history of a sequence. On the other hand, phreatic cavern development commonly cuts across most fabric elements, is not fabricselective and is controlled primarily by joint systems.
Carbonate Reservoirs by Jeffrey M. Lemm