By Fikri Kuchuk, Florian Hollaender and Mustafa Onur (Eds.)
This reference offers a finished description of circulation via porous media and strategies to strain diffusion difficulties in homogenous, layered, and heterogeneous reservoirs. It covers the basics of interpretation strategies for formation tester strain gradients, and pretests, multiprobe and packer strain brief exams, together with by-product, convolution, and pressure-rate and pressure-pressure deconvolution. Emphasis is put on the greatest probability procedure that permits one to estimate mistakes variances in strain info besides the unknown formation parameters.Serves as a coaching handbook for geologists, petrophysicists, and reservoir engineers on formation and strain brief testingOffers interpretation ideas for instant software within the fieldProvides specific assurance of pretests, multiprobe and packer strain brief checks, together with by-product, convolution, and pressure-rate and pressure-pressure deconvolution
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Extra info for Pressure Transient Formation and Well Testing
For the purpose of clarification, it is important to note that the source refers to a point in the system where the fluid is to be added (injected), while the sink refers to a point in the system from which the fluid is to be removed (withdrawn). Therefore, based on this definition, a production probe or well represents a sink, while an injection probe or well represents a source. , q < 0. However, the term sink or source has been used interchangeably in the ground water, heat conduction, and petroleum literature.
After the unitslope period, the phase segregation in the production string distorts the unitslope period significantly until about 30 hr. Finally, both pressure change and derivative show a linear flow regime (m = 1/2) towards the end of the test. Practically, this 160-hr buildup test does not provide information about the well productivity and formation, or the reservoir pressure. 52) is a simple material balance for a slightly compressible fluid in the wellbore. As discussed above, the evolution of solution gas in the wellbore fluid makes the wellbore fluid compressibility vary, which in turn produces a variable wellbore storage condition in the wellbore.
C—A dual-packer module with a single-probe (vertical observation) and sample chambers. J. Kuchuk et al. 14 Different tool configurations and modules for new generation wireline formation testers, after Schlumberger (2006). hydrostatic mud pressure, formation type, etc. The selection of a specific probe arrangement is crucial for pressure transient testing and sampling. Further details of new generation WFT are given by Kikani (2009), Hegeman (2009), Schlumberger (2006), and Schlumberger (1996).