05.07.2009

The phase of petroleum operations that immediately follows successful exploratory drilling. At this stage, appraisal wells are drilled to further define the resources of the structure. During appraisal, delineation wells might be drilled to determine the size of the oil or gas field and how to develop it most efficiently. When an appraisal well is carried out its location is usually sited to test another part of the structure where the operator expects there to be similar hydrocarbon bearing sands, at a location several kilometers away from the first exploration well, and probably closer to the predicted gas-water contact, in order to see if they can pin down where the edges of the reservoir are in order to best estimate the size thereof. In addition, if the appraisal well shows thicker sands, then this is a further positive indication of the quantity of hydrocarbons, if they come in thinner then potentially there could be less gas present then estimated after the exploration well and after the initial logging and flow rate tests. The greater the number of wells placed the higher the accuracy

An abrupt increase in seismic amplitude that can indicate the presence of hydrocarbons, although such anomalies can also result from processing or other problems

An event or appearance of seismic data such as a reflection, a refraction a diffraction or other similar feature or the time at which seismic data appear

The space between the surface casing and the inner, producing well-bore casing.

An analyst at Goldman-Sachs who has predicted the last few spikes in oil accurately

AVO analysis is a technique by which geophysicists attempt to determine thickness, porosity, density, velocity, lithology and fluid content of rocks. By doing ”Amplitude Versus Offset” evaluations on the raw unstacked seismic data it is possible to get a much better understanding of what the amplitude anomalies are telling

A way of bringing oil to the surface when the reservoir pressure has declined. The method involves pumping oil well with a rod, tubing, or bottom-hole centrifugal pump

In geology, the term indicates an abnormality such as a fault or dome in a sedimentary bed.

The Arab Gas Pipeline, which started in 2001, connects Egypt, Syria, Jordan and Lebanon transporting and marketing natural gas through these countries up to the border of Turkey.
The pipelines extend for 1200 km from Al-Arish in Egypt through Jordan and Syria to the Turkish borders. In February 2008 a crucial construction phase ended with the pipeline’s extension to Syria’s Deir Ali power plant south of Damascus and on July 10th 2008 Egypt started transmitting 2.5 million cubic meters of natural gas daily to Syria. The last phase is to link up the pipe to Lebanon and Turkey with the objective to eventually link up via the proposed Nabucco Pipeline to a teeming continent of energy-hungry Europeans

An analogous reservoir is one in the same geographic area that is formed by the same, or very similar, geological processes as a reservoir in question in so far as sedimentation, diagenesis, pressure, temperature, chemical and mechanical history and structure are concerned. It also has the same or similar geologic age, geologic features, and reservoir rock and fluid properties. Analogous features and characteristics can include approximate depth, pressure, temperature, reservoir drive mechanism, original fluid content, oil gravity, reservoir size, gross thickness, net-to-gross ratio, lithology, heterogeneity, porosity and permeability