G.A. Gregory

2.5k total citations · 1 hit paper
30 papers, 1.9k citations indexed

About

G.A. Gregory is a scholar working on Ocean Engineering, Biomedical Engineering and Mechanical Engineering. According to data from OpenAlex, G.A. Gregory has authored 30 papers receiving a total of 1.9k indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Ocean Engineering, 16 papers in Biomedical Engineering and 10 papers in Mechanical Engineering. Recurrent topics in G.A. Gregory's work include Fluid Dynamics and Mixing (14 papers), Oil and Gas Production Techniques (9 papers) and Drilling and Well Engineering (8 papers). G.A. Gregory is often cited by papers focused on Fluid Dynamics and Mixing (14 papers), Oil and Gas Production Techniques (9 papers) and Drilling and Well Engineering (8 papers). G.A. Gregory collaborates with scholars based in Canada and United States. G.A. Gregory's co-authors include Khalid Aziz, J.M. Mandhane, M.K. Nicholson, D. S. Scott, G. W. Govier, Louis Mattar, Steven P. Smith, R.G. Moore, James P. Brill and J.F. Stanislav and has published in prestigious journals such as AIChE Journal, International Journal of Multiphase Flow and The Canadian Journal of Chemical Engineering.

In The Last Decade

G.A. Gregory

29 papers receiving 1.8k citations

Hit Papers

A flow pattern map for gas—liquid flow in horizontal pipes 1974 2026 1991 2008 1974 250 500 750
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. A flow pattern map for gas—liquid flow in horizontal pipes
    1974 920 citations J.M. Mandhane, G.A. Gregory et al. International Journal of Multiphase Flow profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
G.A. Gregory Canada 12 1.5k 997 724 516 278 30 1.9k
J. A. Findlay United States 6 1.3k 0.9× 1.0k 1.0× 514 0.7× 646 1.3× 408 1.5× 11 1.9k
G. W. Govier Canada 11 923 0.6× 702 0.7× 636 0.9× 503 1.0× 115 0.4× 20 1.5k
Kotohiko SEKOGUCHI Japan 16 1.3k 0.8× 876 0.9× 291 0.4× 802 1.6× 204 0.7× 92 1.5k
Akimi Serizawa Japan 20 1.6k 1.0× 1.2k 1.2× 377 0.5× 930 1.8× 196 0.7× 52 2.0k
R.V.A. Oliemans Netherlands 24 1.0k 0.7× 504 0.5× 785 1.1× 733 1.4× 86 0.3× 47 1.6k
Isao Kataoka Japan 23 1.9k 1.3× 1.4k 1.4× 526 0.7× 1.2k 2.3× 462 1.7× 92 2.5k
Yoshifusa SATO Japan 13 1.2k 0.8× 752 0.8× 318 0.4× 766 1.5× 242 0.9× 42 1.5k
Eduardo Pereyra United States 24 1.3k 0.9× 670 0.7× 1.1k 1.5× 474 0.9× 115 0.4× 154 1.8k
J.M. Mandhane Canada 5 739 0.5× 564 0.6× 273 0.4× 301 0.6× 190 0.7× 8 1.0k
Gene Kouba United States 23 501 0.3× 415 0.4× 782 1.1× 665 1.3× 238 0.9× 89 1.4k

Countries citing papers authored by G.A. Gregory

Since Specialization
Citations

This map shows the geographic impact of G.A. Gregory's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by G.A. Gregory with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites G.A. Gregory more than expected).

Fields of papers citing papers by G.A. Gregory

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by G.A. Gregory. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by G.A. Gregory. The network helps show where G.A. Gregory may publish in the future.

Co-authorship network of co-authors of G.A. Gregory

This figure shows the co-authorship network connecting the top 25 collaborators of G.A. Gregory. A scholar is included among the top collaborators of G.A. Gregory based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with G.A. Gregory. G.A. Gregory is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Gregory, G.A., et al.. (2000). Application of Multiphase Flow Methods to Horizontal Underbalanced Drilling. Journal of Canadian Petroleum Technology. 39(10). 15 indexed citations
2.
Brill, James P. & G.A. Gregory. (1998). 1st North American Conference on Multiphase Technology : technology from the arctic to the tropics : papers presented at the 1st North American Conference on Multiphase Technology, organized and sponsored by BHR Group Limited. Held in Banff, Canada on 10-11 June, 1998. 1 indexed citations
3.
Smith, Steven P., et al.. (1998). Application of Multiphase Flow Methods To Horizontal Underbalanced Drilling. 10 indexed citations
4.
Gregory, G.A.. (1992). Correlation and predication of the viscosity of defined and undefined hydrocarbon mictures J. M. Allan and A. S. Teja, can J. Chem. Eng. 69, 986‐991 (1991). The Canadian Journal of Chemical Engineering. 70(5). 1037–1037. 5 indexed citations
5.
Gregory, G.A., et al.. (1985). Alternate to standard friction factor equation. Oil & gas journal. 36 indexed citations
6.
Gregory, G.A., Khalid Aziz, & M.K. Nicholson. (1981). Gas-Liquid Flow In Upwards Inclined Pipe With Zero Net Liquid Production. 5 indexed citations
7.
Gregory, G.A., Khalid Aziz, & R.G. Moore. (1979). Computer Design of Dense-Phase Pipelines. Journal of Petroleum Technology. 31(1). 40–50. 5 indexed citations
8.
Mattar, Louis, M.K. Nicholson, Khalid Aziz, & G.A. Gregory. (1979). Orifice Metering of Two-Phase Flow. Journal of Petroleum Technology. 31(8). 955–961. 11 indexed citations
9.
Gregory, G.A. & Khalid Aziz. (1978). Calculation of Pressure And Temperature Profiles In Multiphase Pipelines And Simpne Pipeline Networks. Journal of Canadian Petroleum Technology. 17(1).
10.
Mandhane, J.M., G.A. Gregory, & Khalid Aziz. (1977). Critical Evaluation of Friction Pressure-Drop Prediction Methods for Gas-Liquid Flow in Horizontal Pipes. Journal of Petroleum Technology. 29(10). 1348–1358. 28 indexed citations
11.
Mandhane, J.M., G.A. Gregory, & Khalid Aziz. (1975). Critical Evaluation of Holdup Prediction Methods for Gas-Liquid Flow in Horizontal Pipes. Journal of Petroleum Technology. 27(8). 1017–1026. 11 indexed citations
12.
Gregory, G.A.. (1975). Comparison of methods for the prediction of liquid holdup for upward gas‐liquid flow in inclined pipes. The Canadian Journal of Chemical Engineering. 53(4). 384–388. 6 indexed citations
13.
Gregory, G.A., J.M. Mandhane, & Khalid Aziz. (1975). Some Design Considerations For Two-Phase Flow In Pipes. Journal of Canadian Petroleum Technology. 14(1). 4 indexed citations
14.
Mattar, Louis & G.A. Gregory. (1974). Air-Oil Slug Flow In an Upward-Inclined Pipe - I: Slug Velocity, Holdup And Pressure Gradient. Journal of Canadian Petroleum Technology. 13(1). 43 indexed citations
15.
Mandhane, J.M., G.A. Gregory, & Khalid Aziz. (1974). A flow pattern map for gas—liquid flow in horizontal pipes. International Journal of Multiphase Flow. 1(4). 537–553. 920 indexed citations breakdown →
16.
Gregory, G.A.. (1974). Application of Factorial Design Analysis to Producing Well Pressure-Drop Modelling. Journal of Canadian Petroleum Technology. 13(2). 2 indexed citations
17.
Gregory, G.A. & Louis Mattar. (1973). An In-Situ Volume Fraction Sensor For Two-Phase Flows of Non-Electrolytes. Journal of Canadian Petroleum Technology. 12(2). 24 indexed citations
18.
Gregory, G.A., et al.. (1973). An analysis of horizontal stratified two phase flow in pipes. The Canadian Journal of Chemical Engineering. 51(3). 280–286. 115 indexed citations
19.
Stanislav, J.F. & G.A. Gregory. (1971). The effect of liquid maldistribution on the performance of a packed tower absorber. The Canadian Journal of Chemical Engineering. 49(5). 590–596. 2 indexed citations
20.
Gregory, G.A. & D. S. Scott. (1969). Correlation of liquid slug velocity and frequency in horizontal cocurrent gas‐liquid slug flow. AIChE Journal. 15(6). 933–935. 219 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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