Download Pressure Transient Formation and Well Testing by Fikri Kuchuk, Florian Hollaender and Mustafa Onur (Eds.) PDF

By Fikri Kuchuk, Florian Hollaender and Mustafa Onur (Eds.)

This reference offers a accomplished description of stream via porous media and recommendations to strain diffusion difficulties in homogenous, layered, and heterogeneous reservoirs. It covers the basics of interpretation recommendations for formation tester strain gradients, and pretests, multiprobe and packer strain temporary assessments, together with spinoff, convolution, and pressure-rate and pressure-pressure deconvolution. Emphasis is put on the greatest chance process that permits one to estimate blunders variances in strain info in addition to the unknown formation parameters.Serves as a coaching handbook for geologists, petrophysicists, and reservoir engineers on formation and strain temporary testingOffers interpretation ideas for fast program within the fieldProvides exact insurance of pretests, multiprobe and packer strain brief assessments, together with by-product, convolution, and pressure-rate and pressure-pressure deconvolution

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Pressure Transient Formation and Well Testing

This reference offers a entire description of stream via porous media and options to strain diffusion difficulties in homogenous, layered, and heterogeneous reservoirs. It covers the basics of interpretation ideas for formation tester strain gradients, and pretests, multiprobe and packer strain temporary assessments, together with by-product, convolution, and pressure-rate and pressure-pressure deconvolution.

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Sample text

The same figure also presents the flow rate that was measured by the pumpout module during the packer pretest and pressure transient test. Notice that the flow rate is more or less constant during the entire drawdown period. As can be seen in this figure, the drawdown pressure increases slightly, indicating a degree of cleanup during the production period. 3. Pressure gauges and their metrology Acquiring accurate downhole pressure data is the most critical part of pressure transient testing for interpretation.

17. 20 Pressures response at an observation well due to an injector. for the pressure gauge to have about two times better resolution just after the drawdown test. 06 psi) can be loosely defined as the apparent resolution (2σ ), where σ is the standard deviation. 01 psi stated gauge resolution. 18. 01 psi. Next, another example will be given for gauge resolution. 20 presents the pressure response in an observation well due to a water injector. e. the change in pressure becomes observable from the “static” reservoir pressure.

However, if the pressure change at the spatial location r is smaller than the apparent gauge resolution at any time during the buildup test, then the buildup pressure or its derivative will not resolve reservoir characteristics beyond any spatial location greater than r, where the pressure change is less than the apparent gauge resolution. Next, we will look at some field data to examine the pressure gauge and apparent resolution. 17 presents a subsequent buildup test. This was a producing well, but it was shut in for about 20 minutes to allow the lowering of a production logging tool (PLT) into the well.

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