| 1 | SHAYA ECUADOR S.A. | US$ 731.172.135 | US$ 131.491.915 | 145 | Pichincha |
| 2 | CONSORCIO SHUSHUFINDI S.A. | US$ 451.222.312 | US$ 127.864.656 | 51 | Pichincha |
| 3 | SCHLUMBERGER DEL ECUADOR S.A. | US$ 592.327.104 | US$ 69.910.827 | 1.424 | Pichincha |
| 4 | SINOPEC INTERNATIONAL PETROLEUM SERVICE ECUADOR S.A. | US$ 192.838.864 | US$ 12.066.878 | 1.059 | Pichincha |
| 5 | HALLIBURTON LATIN AMERICA S.R.L. | US$ 170.957.348 | US$ 2.839.902 | 711 | Pichincha |
| 6 | SERVICIOS PETROLEROS IGAPÓ CIA.LTDA. | US$ 114.710.617 | US$ 30.829.126 | 45 | Pichincha |
| 7 | CNPC CHUANQING DRILLING ENGINEERING COMPANY LIMITED | US$ 105.857.541 | US$ -8.109.545 | 897 | Pichincha |
| 8 | SERTECPET S.A. | US$ 160.860.676 | US$ 7.961.260 | 1.971 | Orellana |
| 9 | BAKER HUGHES SERVICES INTERNATIONAL CIA.LTDA. | US$ 97.681.889 | US$ 5.080.067 | 187 | Pichincha |
| 10 | TRIBOILGAS CIA. LTDA. | US$ 64.504.200 | US$ 9.077.692 | 582 | Orellana |
| 11 | SCHLUMBERGER SURENCO SA | US$ 0 | US$ 5.169.167 | 2 | Pichincha |
| 12 | CUYABENOPETRO S.A. | US$ 28.337.253 | US$ 1.152.369 | 24 | Pichincha |
| 13 | PARDALISERVICES S.A. | US$ 57.433.580 | US$ 17.285.164 | 35 | Pichincha |
| 14 | GEOPARK ECUADOR S.A. | US$ 30.668.021 | US$ -4.672.653 | 2 | Pichincha |
| 15 | CONSORCIO FRONTERA-GEOPARK BLOQUE PERICO | US$ 21.390.528 | US$ 1.426.970 | 20 | Pichincha |
| 16 | CPTDC CHINA PETROLEUM TECHNOLOGY & DEVELOPMENT CORPORATION ECUADOR S.A. | US$ 31.680.587 | US$ 316.812 | 19 | Pichincha |
| 17 | TUSCANY PERFORACIÓN PETROLERA TUSCANYPERF S.A. | US$ 20.599.346 | US$ 298.003 | 593 | Pichincha |
| 18 | TONGGUAN MINES CONSTRUCTION CO, LTD OF TONGLING NONFERROUS METALS GROUP | US$ 28.492.841 | US$ 769.717 | 372 | Guayas |
| 19 | NOVOMETECUADOR S.A. | US$ 18.631.159 | US$ 1.825.396 | 67 | Pichincha |
| 20 | CONSORCIO GEOPARK - FRONTERA BLOQUE ESPEJO | US$ 0 | US$ 0 | 8 | Pichincha |
| 21 | HP DRILLINGSERVICES S.A.S. | US$ 17.471.935 | US$ 6.011.593 | 514 | Azuay |
| 22 | GREEN ROCK RESOURCES GRR S.A. | US$ 0 | US$ -12.250.229 | 2 | Pichincha |
| 23 | DYNADRILL ECUADOR C.A. | US$ 16.193.050 | US$ 1.722.099 | 98 | Pichincha |
| 24 | CNLC ECUADOR CORPORACION S.A.. | US$ 13.859.516 | US$ 367.867 | 64 | Pichincha |
| 25 | YAGLODVIAL S.A. | US$ 8.564.528 | US$ 334.069 | 22 | Guayas |
| 26 | PECKSAMBIENTE S.A. | US$ 23.938.057 | US$ 420.658 | 348 | Orellana |
| 27 | INTERNATIONAL ENERGY SERVICES SOUTH AMERICA CO. LTD., | US$ 6.665.630 | US$ -406.906 | 78 | Pichincha |
| 28 | BRAMADEROS S.A. | US$ 0 | US$ 0 | 49 | Loja |
| 29 | CARNEGIE RIDGE RESOURCES S.A. | US$ 0 | US$ -110.649 | 2 | Pichincha |
| 30 | PETREX S.A. | US$ 10.474 | US$ 3.095 | 4 | Pichincha |
| 31 | INNOVEX SERVICIOS DE PETRÓLEO Y GAS DEL ECUADOR SPGEC CIA.LTDA. | US$ 5.413.564 | US$ -1.672.767 | 1 | Pichincha |
| 32 | GEOPETSA SERVICIOS PETROLEROS S.A. | US$ 7.202.287 | US$ -352.069 | 2 | Pichincha |
| 33 | SURNORTE S.A. | US$ 0 | US$ -8.723 | 4 | Zamora Chinchipe |
| 34 | WELL PERFORATING SERVICES ECUADOR WELLPERF S.A. | US$ 10.171.917 | US$ 1.038.836 | 50 | Orellana |
| 35 | KLUANE DRILLING ECUADOR S.A. | US$ 7.616.942 | US$ 51.935 | 190 | Pichincha |
| 36 | G&G EXPLOGROUP S.A. | US$ 10.468.400 | US$ 530.581 | 2 | Guayas |
| 37 | PETROLEUM & POWER ENGINEERS S.A. POWERENGINEERS | US$ 6.644.850 | US$ 1.241.215 | 49 | Pichincha |
| 38 | EMPRESA ESTATAL UNITARIA ''UNION DE EMPRESAS PRODUCTORAS BELORUSNEFT'' | US$ 251.487 | US$ 90.152 | 2 | Pichincha |
| 39 | NORWEGIAN DRILLING COMPANY SUCURSAL ECUADOR S.A. | US$ 8.265.583 | US$ 632.433 | 42 | Pichincha |
| 40 | DYGOIL CONSULTORIA Y SERVICIOS PETROLEROS C.L. | US$ 2.827.647 | US$ 10.956 | 26 | Pichincha |
| 41 | WELLBORE INTEGRITY SOLUTIONS NETHERLANDS B.V. | US$ 4.325.144 | US$ -77.556 | 27 | Pichincha |
| 42 | CRUZ DEL SOL CSSA S.A. | US$ 0 | US$ -14.839.532 | 2 | Pichincha |
| 43 | DRILLCOTEC CIA.LTDA. | US$ 2.064.131 | US$ 15.557 | 51 | Pichincha |
| 44 | SAN JACK OILFIELD-SOLUTIONS S.A. | US$ 5.696.608 | US$ 9.892 | 6 | Pichincha |
| 45 | GRAN TIERRA ENERGY ECUADOR 1 GMBH, | US$ 0 | US$ -69.727 | 1 | Pichincha |
| 46 | TORATA MINING RESOURCES TMR S.A. | US$ 0 | US$ -53.947 | 3 | Pichincha |
| 47 | GRAN TIERRA ENERGY ECUADOR 2 GMBH, | US$ 0 | US$ -66.992 | 1 | Pichincha |
| 48 | TECPESERVICES S.A. | US$ 6.757.560 | US$ 930.986 | 12 | Pichincha |
| 49 | TECNOLOGIA, SERVICIOS Y REPRESENTACIONES PETROLERAS PETROTECH S.A. | US$ 2.867.325 | US$ 167.942 | 46 | Pichincha |
| 50 | SANTA ELENA PETROLEUM SANTALENAPETRO S.A. | US$ 0 | US$ 0 | 2 | Pichincha |
| 51 | BGP ECUADOR CO S.A. | US$ 163.635 | US$ -413.813 | 5 | Pichincha |
| 52 | CERRO GRANDE CERROGRAN S.A. | US$ 2.399.736 | US$ 457.707 | 7 | Guayas |
| 53 | F&TSERVICIOSPETROLEROS CIA.LTDA. | US$ 6.423.225 | US$ 114.345 | 48 | Pichincha |
| 54 | WEATHERFORD SOUTH AMERICA GmbH | US$ 420.745 | US$ 220.025 | 1 | Pichincha |
| 55 | ROCKEXPLORE S.A.S. | US$ 5.206.422 | US$ 591.320 | 6 | Pichincha |
| 56 | PGER ECUADOR S.A.S. | US$ 4.023.778 | US$ 35.547 | 4 | Pichincha |
| 57 | MKPSERVIC SERVICIOS PETROLEROS CIA. LTDA. | US$ 1.052.719 | US$ 5.053 | 26 | Orellana |
| 58 | ORIENTSERVICES S.A. | US$ 3.333.814 | US$ 59.025 | 4 | Orellana |
| 59 | TECHNODYNEGMBH CIA. LTDA. | US$ 475.802 | US$ 0,18 | 9 | Pichincha |
| 60 | MINGA S.A. | US$ 2.736.397 | US$ 2.776 | 68 | Pichincha |