petroleum production 2 min read
The Zone near the Well, the Sandface, and the Well Completion
The zone surrounding a well is important. First, even without any man-made disturbance, converging, radial flow results in a considerable…
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Permeability
The presence of a substantial porosity usually (but not always) implies that pores will be interconnected. Therefore the porous medium…
petroleum production 2 min read
Areal Extent
Favorable conclusions on the porosity, reservoir height, fluid saturations, and pressure (and implied phase distribution) of a petroleum reservoir, based…
petroleum production 2 min read
Classification of Reservoirs
All hydrocarbon mixtures can be described by a phase diagram such as the one shown in Figure 1-3. Plotted are…
petroleum production 2 min read
Components of the Petroleum Production System
The reservoir consists of one or several interconnected geological flow units. While the shape of a well and converging flow…
petroleum geology 3 min read
Meteoric Water Flow and Diagenesis
The introduction of meteoric water has a profound effect on carbonate sediments and their potential as reservoir rocks. A proportion…
petroleum geology 3 min read
Pelagic Carbonate
Pelagic carbonate deposits consist largely of planktonic organisms (coccolithophores, foraminifera, pteropods etc.) which live in the upper part of the…
petroleum geology 3 min read
Modern Environments of Carbonate Sedimentation
From a sedimentological point of view a reef may be defined as a laterally restricted body of carbonate rock whose…
petroleum geology 2 min read
Geological Range
Foraminifera range from the Cambrian to Recent. Most of the Lower and Middle Palaeozoic forms had an agglutinated test whereas…
petroleum geology 3 min read
Geochemistry of Carbonate Minerals
Carbonate minerals consist of CO2− 3 and one or more cations. The most common cations in carbonate minerals together with…
petroleum geology 3 min read
Practical Predictions of Reservoir Quality and Porosity Depth Curves
The oil industry has a practical need to be able to predict the properties of reservoir rocks ahead of drilling.…
petroleum geology 2 min read
Prediction of Reservoir Quality
It is important to distinguish between sandstones of different primary composition: Volcanoclastic sandstones may vary greatly in composition depending on…