Comprehensive Analysis Of Drillstem Test Data With The Aid Of Type Curves

1976 ◽  
Author(s):  
B.K. Sinha ◽  
J.E. Sigmon ◽  
J.M. Montgomery
Keyword(s):  
Test Data ◽  
Comprehensive Analysis ◽  
Type Curves

COMPREHENSIVE ANALYSIS OF DRILLSTEM TEST DATA WITH THE AID OF TYPE CURVES

1980 ◽  
Vol 20 (1) ◽  
pp. 229
Author(s):  
B.K. Sinha ◽  
J.M. Montgomery
Keyword(s):  
Test Data ◽  
Comprehensive Analysis ◽  
Insufficient Data ◽  
Type Curve ◽  
Type Curves ◽  
Correct Analysis

A substantial percentage of drillstem tests cannot be analysed by convential methods due to insufficient data. Numerous tests have been analysed by several published type curves.In this paper, many examples are included where the application of the appropriate type curve aided in providing correct analysis of data which otherwise may have been misinterpreted.

Test Response of a Turbocharger Supported on Floating Ring Bearings: Part I — Assessment of Subsynchronous Motions

2003 ◽  
Author(s):  
Chris Holt ◽  
Luis San Andre´s ◽  
Sunil Sahay ◽  
Peter Tang ◽  
Gerry La Rue ◽  
...  
Keyword(s):  
Ambient Temperature ◽  
Test Data ◽  
Natural Frequencies ◽  
Comprehensive Analysis ◽  
Experimental Results ◽  
Inlet Pressure ◽  
Rotor Speed ◽  
Test Response ◽  
Feed Pressure ◽  
Feed Temperature

Measurements of casing acceleration on an automotive turbocharger running to a top speed of 115 krpm and driven by ambient temperature pressurized air are reported. Waterfall acceleration spectra versus rotor speed show the effects of increasing lubricant inlet pressure and temperature on the turbocharger rotordynamic response. A comprehensive analysis of the test data forwards regimes of speed operation with two subsynchronous whirl motions (rotordynamic instabilities). Increasing the lubricant feed pressure delays the onset speed of instability for the most severe subsynchronous motion. However, increasing the lubricant feed pressure also produces larger synchronous displacements. The effect of lubricant feed temperature is minimal on the onset and end speeds of rotordynamic instability. Nevertheless, operation with a cold lubricant exhibits lower amplitudes of motion, synchronous and subsynchronous. The experimental results show the subsynchronous frequencies of motion do not lock (whip) at system natural frequencies but continuously track the rotor speed. No instabilities (subsynchronous whirl) remain for operating speeds above 90 krpm. Bearings greatly influence turbocharger (TC) rotordynamic performance.

scholarly journals A Sound Assessment of Test Suite Minimization Techniques

2018 ◽  
Vol 7 (2) ◽  
pp. 87-91
Author(s):  
Fayaz Ahmad Khan
Keyword(s):  
Software Development ◽  
Test Data ◽  
Comprehensive Analysis ◽  
Test Suite ◽  
Test Cases ◽  
Test Data Generation ◽  
Data Generation ◽  
Before And After ◽  
New Ideas ◽  
Automatic Test Data Generation

During software development, testing and re-testing occurs frequently to ensure that the software is working correctly before and after modifications. To carry out an effective testing process a test suite is created and executed to detect the faults in the existing code as well as in the modified code. The manual approach of test suite creation and execution is time consuming and labour intensive task as compared to automatically generated test data or test suite. The automatic test data generation is supposed to be an effective way, but a lot of redundant test cases are generated that increase the time, effort and cost of testing. Therefore, test suite minimization techniques are used to further minimize or reduce the number of test cases by selecting a subset from an initially random and large test suite to test the code before as well as after modification. In this study, a comprehensive analysis of the different test suite minimization techniques is presented in order to extend the existing studies and to propose new ideas in this direction.

Brief Reports: Certain School and Pupil Characteristics and Mathematics Test Results in Wisconsin

1977 ◽  
Vol 8 (3) ◽  
pp. 223-227
Author(s):  
William F. Coulson ◽  
Trevor G. Howe
Keyword(s):  
Test Data ◽  
Comprehensive Analysis ◽  
The State ◽  
Test Results ◽  
Laboratory School ◽  
Mathematics Tests ◽  
Mathematics Test ◽  
And Mathematics ◽  
Public Instruction ◽  
Selection Of

The Wisconsin Laboratory School Mathematics Committee prepared mathematics tests for Grades I through 6 that were administered throughout Wisconsin in 1969. These tests were based on behavioral objectives in Guidelines to Mathematics: K–6 (1967) published by the Department of Public Instruction of the state of Wisconsin. A comprehensive analysis of the mathematics test data was prepared by Coulson (1973). This report is a summary and selection of results from Coulson's study.

scholarly journals An area matching process to estimate the hydraulic parameters using transient constant-head test data

2016 ◽  
Vol 47 (5) ◽  
pp. 919-931 ◽  
Author(s):  
A. Ufuk Şahin ◽  
Emin Çiftçi
Keyword(s):  
Test Data ◽  
Field Data ◽  
Random Noise ◽  
Data Set ◽  
Integration Interval ◽  
Type Curves ◽  
Hydrogeological Parameters ◽  
Matching Process ◽  
Actual Field ◽  
Constant Head

A new parameter estimation methodology was established for the interpretation of the transient constant-head test to identify the hydrogeological parameters of an aquifer. The proposed method, referred as the area matching process (AMP), is based on linking the field data to the theoretical type curve through a unique area computed above these curves bounded by a user specified integration interval. The proposed method removes the need of superimposition of theoretical type curves and field data collected during the test, which may lead to the unexpected errors in assessing aquifer parameters. The AMP approach was implemented for a number of synthetically generated hypothetical test data augmented with several random noise levels, which mimic the uncertainty in site measurement together with porous media heterogeneity, and to an actual field data set available in the literature. The estimation performance of the AMP method was also compared with the existing traditional and recently developed techniques. As demonstrated by the conducted test results, the accuracy, reliability, robustness and simplicity of the proposed technique provide significant flexibility in field applications.

Type Curves For McKinley Analysis Of Drill-Stem Test Data

1977 ◽  
Author(s):  
Gary E. Crawford ◽  
Aaron E. Pierce ◽  
R.M. McKinley
Keyword(s):  
Test Data ◽  
Type Curves ◽  
Drill Stem
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