Class information for: |
Basic class information |
Hierarchy of classes |
The table includes all classes above and classes immediately below the current class. |
| Cluster id | Level | Cluster label | #P |
|---|---|---|---|
| 8 | 4 | POLYMER SCIENCE//CHEMISTRY, PHYSICAL//MATERIALS SCIENCE, MULTIDISCIPLINARY | 1554940 |
| 584 | 3 | NANOPORE//SPE DRILLING & COMPLETION//DRAG REDUCTION | 15564 |
| 3172 | 2 | SPE DRILLING & COMPLETION//ENGINEERING, PETROLEUM//DRILL STRING | 2325 |
| 19516 | 1 | DRILL STRING//DRILLSTRINGS//DRILL STRING DYNAMICS | 526 |
Terms with highest relevance score |
| rank | Category | termType | chi_square | shrOfCwithTerm | shrOfTermInClass | termInClass |
|---|---|---|---|---|---|---|
| 1 | DRILL STRING | authKW | 1043862 | 5% | 62% | 28 |
| 2 | DRILLSTRINGS | authKW | 986044 | 5% | 69% | 24 |
| 3 | DRILL STRING DYNAMICS | authKW | 842578 | 3% | 94% | 15 |
| 4 | HELICAL BUCKLING | authKW | 595637 | 2% | 76% | 13 |
| 5 | SPE DRILLING & COMPLETION | journal | 462638 | 14% | 10% | 74 |
| 6 | CONSTRAINED ELASTICA | authKW | 383464 | 2% | 80% | 8 |
| 7 | ADV DRILLING GRP | address | 239667 | 1% | 100% | 4 |
| 8 | DRILL STRING NONLINEAR DYNAMICS | authKW | 239667 | 1% | 100% | 4 |
| 9 | SINUSOIDAL BUCKLING | authKW | 239667 | 1% | 100% | 4 |
| 10 | BIT ROCK INTERACTION | authKW | 215696 | 1% | 60% | 6 |
Web of Science journal categories |
| chi_square_rank | Category | chi_square | shrOfCwithTerm | shrOfTermInClass | termInClass |
|---|---|---|---|---|---|
| 1 | Engineering, Petroleum | 62572 | 35% | 1% | 183 |
| 2 | Energy & Fuels | 4860 | 32% | 0% | 166 |
| 3 | Mechanics | 3692 | 29% | 0% | 155 |
| 4 | Engineering, Mechanical | 2303 | 22% | 0% | 115 |
| 5 | Acoustics | 1597 | 11% | 0% | 56 |
| 6 | Engineering, Chemical | 192 | 9% | 0% | 49 |
| 7 | Automation & Control Systems | 73 | 3% | 0% | 15 |
| 8 | Mathematics, Interdisciplinary Applications | 58 | 3% | 0% | 15 |
| 9 | Engineering, Ocean | 36 | 1% | 0% | 4 |
| 10 | Materials Science, Characterization, Testing | 33 | 1% | 0% | 6 |
Address terms |
| chi_square_rank | term | chi_square | shrOfCwithTerm | shrOfTermInClass | termInClass |
|---|---|---|---|---|---|
| 1 | ADV DRILLING GRP | 239667 | 1% | 100% | 4 |
| 2 | DRILLING TECH GRP | 119834 | 0% | 100% | 2 |
| 3 | MATURE BUSINESS UNIT | 79888 | 0% | 67% | 2 |
| 4 | TUDRP | 77032 | 1% | 43% | 3 |
| 5 | ABQAIC PLANTS OPERAT ENGN | 59917 | 0% | 100% | 1 |
| 6 | ADV CASING TUBING DESIGN COURSE | 59917 | 0% | 100% | 1 |
| 7 | ADV DRILLING | 59917 | 0% | 100% | 1 |
| 8 | AI CUZA | 59917 | 0% | 100% | 1 |
| 9 | BAKER OIL TOOLS | 59917 | 0% | 100% | 1 |
| 10 | BICRON | 59917 | 0% | 100% | 1 |
Journals |
| chi_square_rank | term | chi_square | shrOfCwithTerm | shrOfTermInClass | termInClass |
|---|---|---|---|---|---|
| 1 | SPE DRILLING & COMPLETION | 462638 | 14% | 10% | 74 |
| 2 | JOURNAL OF ENERGY RESOURCES TECHNOLOGY-TRANSACTIONS OF THE ASME | 93221 | 10% | 3% | 51 |
| 3 | JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING | 17964 | 6% | 1% | 33 |
| 4 | JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING | 11555 | 4% | 1% | 20 |
| 5 | JOURNAL OF PETROLEUM TECHNOLOGY | 8607 | 2% | 1% | 13 |
| 6 | SPE JOURNAL | 7486 | 2% | 1% | 13 |
| 7 | OIL & GAS JOURNAL | 7021 | 3% | 1% | 18 |
| 8 | JOURNAL OF SOUND AND VIBRATION | 4149 | 6% | 0% | 33 |
| 9 | JOURNAL OF TERRAMECHANICS | 3611 | 1% | 1% | 7 |
| 10 | JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME | 3401 | 2% | 0% | 12 |
Author Key Words |
| chi_square_rank | term | chi_square | shrOfCwithTerm | shrOfTermInClass | termInClass | LCSH search | Wikipedia search |
|---|---|---|---|---|---|---|---|
| 1 | DRILL STRING | 1043862 | 5% | 62% | 28 | Search DRILL+STRING | Search DRILL+STRING |
| 2 | DRILLSTRINGS | 986044 | 5% | 69% | 24 | Search DRILLSTRINGS | Search DRILLSTRINGS |
| 3 | DRILL STRING DYNAMICS | 842578 | 3% | 94% | 15 | Search DRILL+STRING+DYNAMICS | Search DRILL+STRING+DYNAMICS |
| 4 | HELICAL BUCKLING | 595637 | 2% | 76% | 13 | Search HELICAL+BUCKLING | Search HELICAL+BUCKLING |
| 5 | CONSTRAINED ELASTICA | 383464 | 2% | 80% | 8 | Search CONSTRAINED+ELASTICA | Search CONSTRAINED+ELASTICA |
| 6 | DRILL STRING NONLINEAR DYNAMICS | 239667 | 1% | 100% | 4 | Search DRILL+STRING+NONLINEAR+DYNAMICS | Search DRILL+STRING+NONLINEAR+DYNAMICS |
| 7 | SINUSOIDAL BUCKLING | 239667 | 1% | 100% | 4 | Search SINUSOIDAL+BUCKLING | Search SINUSOIDAL+BUCKLING |
| 8 | BIT ROCK INTERACTION | 215696 | 1% | 60% | 6 | Search BIT+ROCK+INTERACTION | Search BIT+ROCK+INTERACTION |
| 9 | COILED TUBING | 195929 | 2% | 30% | 11 | Search COILED+TUBING | Search COILED+TUBING |
| 10 | BEAM COLUMN MODEL | 191732 | 1% | 80% | 4 | Search BEAM+COLUMN+MODEL | Search BEAM+COLUMN+MODEL |
Core articles |
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c: (1) Number of references referring to publications in the class. (2) Share of total number of active references referring to publications in the class. (3) Age of the article. New articles get higher score than old articles. (4) Citation rate, normalized to year. |
Classes with closest relation at Level 1 |