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Class Information
Number: 73/152.37
Name: Measuring and testing > Borehole or drilling (e.g., drill loading factor, drilling rate, rate of fluid flow) > Fluid flow measuring or fluid analysis > Steady state fluid flow interruption
Description: Subject matter wherein the fluid usually flows at a constant rate and the determination of the characteristic of the borehole, the casing, or the drill rigging is made by interrupting the constant rate of flow of the fluid.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5621170 |
Method for testing gas wells in low pressured gas formations |
Apr. 15, 1997 |
| 5247829 |
Method for individually characterizing the layers of a hydrocarbon subsurface reservoir |
Sep. 28, 1993 |
| 5095983 |
Multiphase production evaluation method using thru-tubing, wireline packoff devices |
Mar. 17, 1992 |
| 4803873 |
Process for measuring flow and determining the parameters of multilayer hydrocarbon producing formations |
Feb. 14, 1989 |
| 4797821 |
Method of analyzing naturally fractured reservoirs |
Jan. 10, 1989 |
| 4779200 |
Method for estimating porosity and/or permeability |
Oct. 18, 1988 |
| 4677849 |
Hydrocarbon well test method |
Jul. 7, 1987 |
| 4597290 |
Method for determining the characteristics of a fluid-producing underground formation |
Jul. 1, 1986 |
| 4483187 |
Surface readout drill stem test control apparatus |
Nov. 20, 1984 |
| 4348897 |
Method and device for determining the transmissibility of a fluid-conducting borehole layer |
Sep. 14, 1982 |
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