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.
Development of organic porosity in the Woodford Shale with increasing thermal maturity
2012921 citationsCarl Sondergeld, Chandra Rai et al.profile →
Microstructural investigation of gas shales in two and three dimensions using nanometer-scale resolution imaging
2012604 citationsCarl Sondergeld, Chandra Rai et al.profile →
Shale Gas-in-Place Calculations Part I: New Pore-Scale Considerations
Countries citing papers authored by Carl Sondergeld
Since
Specialization
Citations
This map shows the geographic impact of Carl Sondergeld'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 Carl Sondergeld with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Carl Sondergeld more than expected).
This network shows the impact of papers produced by Carl Sondergeld. 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 Carl Sondergeld. The network helps show where Carl Sondergeld may publish in the future.
Co-authorship network of co-authors of Carl Sondergeld
This figure shows the co-authorship network connecting the top 25 collaborators of Carl Sondergeld.
A scholar is included among the top collaborators of Carl Sondergeld 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 Carl Sondergeld. Carl Sondergeld 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.
Sondergeld, Carl, et al.. (2019). SEM Investigation of the Fracture Network (Stimulated Reservoir Volume) Induced by Hydraulic Fracturing in Tennessee Sandstone. 53rd U.S. Rock Mechanics/Geomechanics Symposium.2 indexed citations
2.
Sondergeld, Carl, et al.. (2018). Mapping Hydraulic Fracture in Pyrophyllite Using Shear Wave. 52nd U.S. Rock Mechanics/Geomechanics Symposium.2 indexed citations
3.
Gupta, Ishank, Carl Sondergeld, Chandra Rai, & Ronny Hofmann. (2018). Water Weakening: Case Study From Marcellus, Woodford, Eagle Ford and Wolfcamp. 52nd U.S. Rock Mechanics/Geomechanics Symposium.2 indexed citations
4.
Gupta, Ishank, Carl Sondergeld, & Chandra Rai. (2018). Applications of NanoIndentation for Reservoir Characterization in Shales. 52nd U.S. Rock Mechanics/Geomechanics Symposium.8 indexed citations
5.
Sondergeld, Carl, et al.. (2015). Nanoindentation Creep Measurements on Shale.23 indexed citations
6.
Sondergeld, Carl, et al.. (2015). Stress Dependency of Rock Tensile Strength.4 indexed citations
7.
Sondergeld, Carl, et al.. (2013). Acoustic Mapping and Microscopic Analysis of Laboratory Induced Hydraulic Fractures under Triaxial Stress Conditions.7 indexed citations
8.
Rai, Chandra, et al.. (2013). Petrophysical Characterization of the Woodford Shale. Petrophysics – The SPWLA Journal of Formation Evaluation and Reservoir Description. 54(4). 368–382.23 indexed citations
9.
Sondergeld, Carl, et al.. (2012). Acoustic Emission Studies of Hydraulic Fracture Evolution Using Different Fluid Viscosities.5 indexed citations
Sondergeld, Carl, et al.. (2007). An Improved Empirical Permeability Estimator From Mercury Injection For Tight Clastic Rocks. Petrophysics – The SPWLA Journal of Formation Evaluation and Reservoir Description. 48(3). 186–190.36 indexed citations
15.
Rai, Chandra, et al.. (2006). NMR Response of Two Clastic Reservoirs: Influence of Depositional Environment. Petrophysics – The SPWLA Journal of Formation Evaluation and Reservoir Description. 47(3). 214–222.8 indexed citations
Sondergeld, Carl, et al.. (1991). The Amoco Array Sonic Logger. The Log analyst. 32(3).2 indexed citations
20.
Sondergeld, Carl, et al.. (1979). Compressional velocity measurements for a highly fractured lunar anorthosite.. Lunar and Planetary Science Conference. 3. 1143–1145.8 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.