A New Type Curve for Well Testing in Anisotropic Formations

Well testing is the cheapest and most accurate tool available to find the distance from a well to a linear constant-pressure boundary or fault. Several methods exist in the literature with which to determine this parameter. Most of them use conventional analysis and are only useful for isotropic reservoir systems. The few methods for anisotropic systems obtain the well-to-discontinuity distance through conventional analysis, type-curve matching and TDS technique, and then a correction by anisotropic effects is applied. In this work, a unified behavior of the pressure derivative was found, so the new shorter and most practical expressions used to find the distance from the well to the discontinuity, including the simultaneous effects of anisotropy angle and anisotropy index, are included. These new formulae were successfully tested with two synthetic examples and one field case example, and deviation errors higher than 30% are observed if an anisotropic system is treated as an isotropic one.

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Dynamics Simulation Analysis of Exchange Cutter Manipulator Based on RecurDyn

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.364.396 ◽

2013 ◽

Vol 364 ◽

pp. 396-400

Author(s):

Qiu Cheng Ma ◽

Teng Fang ◽

Zhi Xiang Fang ◽

An Ge Lu

Keyword(s):

3D Model ◽

Simulation Analysis ◽

Dynamics Simulation ◽

Type Curve ◽

Sine Curve ◽

Automatic Tool Changer ◽

New Type ◽

Automatic Tool

This paper introduces a new kind of cam curve used in automatic tool changer based on the Exchange Cutter Manipulator 3d model established by the new cam curve and the use of RecurDyn to do the dynamics simulation. Comparing the establishment of the modify sine curve with the Exchange Cutter Manipulator, the new type curve of the Exchange Cutter Manipulator have smaller impact.

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A New Type Curve Method for the Analysis of Pumping Tests in Large-Diameter Wells

Water Resources Research ◽

10.1029/wr021i002p00261 ◽

1985 ◽

Vol 21 (2) ◽

pp. 261-264 ◽

Cited By ~ 18

Author(s):

R. S. Wikramaratna

Keyword(s):

Large Diameter ◽

Type Curve ◽

Pumping Tests ◽

New Type ◽

Curve Method

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B-Lift Curves in Euclidean 3-space

10.20944/preprints202103.0580.v1 ◽

2021 ◽

Author(s):

Anıl Altınkaya

Keyword(s):

Dimensional Space ◽

Type Curve ◽

3 Dimensional ◽

Slant Helix ◽

New Type ◽

Lift Curve ◽

Main Curve

In this study, we introduce a new type curve in 3-dimensional space which called B-lift curve and we obtain the Frenet operators of the B-lift curve. Moreover, we consider the correpondence of Frenet operators between the Blift curve and the natural lift curve. Finally, we investigate the B-lift curve according to the main curve is slant helix or darboux helix.

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The Microstructure of Shock-Synthesized Diamond

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010006163x ◽

1967 ◽

Vol 25 ◽

pp. 324-325

Author(s):

Lucien F. Trueb

Keyword(s):

Single Crystals ◽

Preferred Orientation ◽

High Magnification ◽

Texture Pattern ◽

Shock Process ◽

New Type ◽

Diffraction Diagram

A new type of synthetic industrial diamond formed by an explosive shock process has been recently developed by the Du Pont Company. This material consists of a mixture of two basically different forms, as shown in Figure 1: relatively flat and compact aggregates of acicular crystallites, and single crystals in the form of irregular polyhedra with straight edges.Figure 2 is a high magnification micrograph typical for the fibrous aggregates; it shows that they are composed of bundles of crystallites 0.05-0.3 μ long and 0.02 μ. wide. The selected area diffraction diagram (insert in Figure 2) consists of a weak polycrystalline ring pattern and a strong texture pattern with arc reflections. The latter results from crystals having preferred orientation, which shows that in a given particle most fibrils have a similar orientation.

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