| 1 | ENAP SIPETROL S.A. | US$ 321.861.125 | US$ 103.193.493 | 205 | Pichincha |
| 2 | ANDES PETROLEUM ECUADOR LTD. | US$ 302.045.202 | US$ 103.055.805 | 554 | Pichincha |
| 3 | PLUSPETROL ECUADOR B.V. | US$ 97.110.170 | US$ -10.534.418 | 178 | Pichincha |
| 4 | PETROORIENTAL S.A. | US$ 98.391.338 | US$ 2.428.585 | 4 | Pichincha |
| 5 | GRAN TIERRA ENERGY COLOMBIA GMBH | US$ 65.217.858 | US$ -16.478.799 | 38 | Pichincha |
| 6 | PCR-ECUADOR S.A. | US$ 122.709.790 | US$ 26.763.847 | 291 | Pichincha |
| 7 | ORIONOIL ER S.A. | US$ 49.401.047 | US$ 7.651.358 | 94 | Pichincha |
| 8 | WAYRAENERGY S.A.S. | US$ 49.327.106 | US$ 6.572.751 | 55 | Pichincha |
| 9 | CRS RESOURCES S.L. | US$ 6.167.038 | US$ 4.249.411 | 2 | Pichincha |
| 10 | SWISSOIL DEL ECUADOR S.A. (SWISSOIL) | US$ 71.342.371 | US$ 4.039.230 | 111 | Guayas |
| 11 | PDVSA ECUADOR S.A. | US$ 393.310 | US$ -1.554.588 | 6 | Pichincha |
| 12 | PETROBELL S.A. | US$ 36.778.446 | US$ 9.125.649 | 98 | Pichincha |
| 13 | SERVICIOS INTEGRADOS PAÑATURI S.A. | US$ 60.286.025 | US$ 22.070.577 | 59 | Pichincha |
| 14 | HILONG OIL SERVICE & ENGINEERING ECUADOR CIA. LTDA. | US$ 46.497.788 | US$ 1.080.408 | 258 | Pichincha |
| 15 | AMODAIMI-OIL COMPANY, S.L. | US$ 943.048 | US$ 600.100 | 1 | Pichincha |
| 16 | FRONTERA ENERGY COLOMBIA CORP. | US$ 30.557.334 | US$ -4.975.049 | 1 | Pichincha |
| 17 | GASVESUBIO EXPORT S.A. | US$ 2.448.302 | US$ -3.430.288 | 24 | Azuay |
| 18 | GENTE OIL ECUADOR PTE.LTD. | US$ 30.103.698 | US$ 2.375.253 | 77 | Pichincha |
| 19 | ORION ENERGY OCANOPB S.A. | US$ 18.038.219 | US$ -586.570 | 87 | Pichincha |
| 20 | PETROLEOS DEL PACIFICO S.A. PACIFPETROL | US$ 16.338.726 | US$ -284.186 | 85 | Pichincha |
| 21 | PAMPA BLOQUE18 S.A.S. | US$ 1.784.801 | US$ 2.276.612 | 1 | Pichincha |
| 22 | CONDOR SERVICIOS PETROLEROS CONSEPETRO S.A. | US$ 1.939.147 | US$ -628.986 | 4 | Pichincha |
| 23 | OVERSEAS PETROLEUM AND INVESTMENT CORPORATION | US$ 21.013.133 | US$ -2.379.295 | 2 | Pichincha |
| 24 | SAXON ENERGY SERVICES DEL ECUADOR S.A. | US$ 240.000 | US$ 82.679 | 3 | Pichincha |
| 25 | GRANTMINING S.A. | US$ 0 | US$ 4.472 | 1 | Pichincha |
| 26 | SPETROLEUM S.A.S. | US$ 20.000 | US$ 810,6 | 3 | Pichincha |
| 27 | PETRORIVA S.A. | US$ 604.625 | US$ 453.562 | 2 | Pichincha |
| 28 | FRANK'S INTERNACIONAL ECUADOR CIA. LTDA. | US$ 5.338.943 | US$ 792.425 | 65 | Pichincha |
| 29 | EQUIPO PETROLERO S.A. EQUIPETROL | US$ 4.054.742 | US$ 258.744 | 52 | Pichincha |
| 30 | RIMERA SERVICE S.A. | US$ 1.823.455 | US$ 196.736 | 11 | Pichincha |
| 31 | ECUADORIAN DRILLING SERVICES EDS DEL ECUADOR S.A. | US$ 1.472.514 | US$ 17.751 | 2 | Sucumbios |
| 32 | EQUIPENINSULA S.A | US$ 2.043.587 | US$ -419.650 | 1 | Pichincha |
| 33 | TECPECUADOR S.A. | US$ 267.346 | US$ 161.602 | 1 | Pichincha |
| 34 | SOCIEDAD LIMITADA ''NUEVAS TECNOLOGÍAS'' | US$ 3.195.601 | US$ 147.835 | 1 | Pichincha |
| 35 | ERINCORP S.A. | US$ 6.833.733 | US$ -206.301 | 4 | Guayas |
| 36 | ENERGIA OPERACIONES ENOPSA S.A.S. | US$ 107.730 | US$ -83.848 | 2 | Pichincha |
| 37 | TECNA CORP. DEL ECUADOR S.A. | US$ 3.039.469 | US$ 75.656 | 3 | Pichincha |
| 38 | SEOG OIL & GAS SOCIEDAD ANONIMA | US$ 0 | US$ -9.069 | 1 | Pichincha |
| 39 | OLEUM TRADING COMPANY S.A. | US$ 2.247.823 | US$ 57.011 | 4 | Manabi |
| 40 | SERVICIO INDUSTRIAL IPIZA & HIDROMAX IPIZAHIDROMAX S.A. | US$ 972.945 | US$ -10.288 | 4 | Pichincha |
| 41 | AMSPEC DE ECUADOR S.A. | US$ 1.026.299 | US$ 6.861 | 36 | Pichincha |
| 42 | ELECTRICA DEL ECUADOR S.A. ELECTRIECU | US$ 84.421 | US$ 5.195 | 8 | Guayas |
| 43 | AMERISUREXPLOR ECUADOR S. A. | US$ 0 | US$ 3.433 | 1 | Pichincha |
| 44 | PETROMANABI S.A. | US$ 0 | US$ 0 | 2 | Pichincha |
| 45 | SERVICIOS DE ASESORIA PETROLERA JARSUPPLAY S.A.S. | US$ 15.419 | US$ 2.755 | 1 | Pichincha |
| 46 | INDUSTRIAS OILWELL SERVICES DE ECUADOR MARVILLOIL S.A. | US$ 126.816 | US$ 25.164 | 2 | Pichincha |
| 47 | EOP OPERACIONES PETROLERAS S.A. | US$ 0 | US$ -86.506 | 1 | Pichincha |
| 48 | CARLOS PUIG & ASOCIADOS S.A. CIA. DE EXPLORACION DE MINERALES Y SERVICIOS MINEROS | US$ 146.841 | US$ -24.741 | 2 | Pichincha |