Producción por operador
Operador	Petroleo				Gas natural
	4/2011		5/2011		4/2011		5/2011
	m3/día	%	m3/día	%	Mm3/día	%	Mm3/día	%
YPF S.A.	24,342	30.49	23,900	28.65	27,656	22.97	28,169	22.54
PAN AMERICAN	16,913	21.18	18,089	21.69	14,414	11.97	15,668	12.54
PETROBRAS ARGENTINA S.A.	6,045	7.57	6,000	7.19	10,873	9.03	11,194	8.96
CHEVRON ARGENTINA S.R.L.	5,950	7.45	5,708	6.84	716	0.59	699	0.56
PETRO ANDINA RESOURCES LTD.	4,619	5.78	4,484	5.38	203	0.17	201	0.16
TECPETROL S.A.	3,912	4.90	3,920	4.70	4,002	3.32	4,187	3.35
TOTAL AUSTRAL S.A.	3,207	4.02	3,164	3.79	37,904	31.48	38,786	31.04
SINOPEC ARGENTINA EXPLORATION INC	1,076	1.35	4,249	5.09	260	0.22	1,235	0.99
PETROLERA ENTRE LOMAS S.A.	2,305	2.89	2,361	2.83	1,195	0.99	1,190	0.95
PLUSPETROL S.A.	1,924	2.41	1,878	2.25	4,125	3.43	4,116	3.29
COMPAÑIAS ASOCIADAS PETROLERAS S.A.	1,839	2.30	1,803	2.16	64	0.05	66	0.05
PETROQUIMICA COM. RIVADAVIA S.A.	1,299	1.63	1,214	1.46	696	0.58	738	0.59
ENAP SIPETROL ARGENTINA S.A.	1,174	1.47	1,200	1.44	826	0.69	883	0.71
APACHE ENERGIA ARGENTINA S.R.L	1,013	1.27	991	1.19	4,178	3.47	4,513	3.61
PETROLERA LF COMPANY S.R.L	800	1.00	807	0.97	4,376	3.63	4,260	3.41
ROCH S.A.	663	0.83	685	0.82	1,769	1.47	1,804	1.44
CHAÑARES HERRADOS S.A.	479	0.60	481	0.58	19	0.02	19	0.02
PETROLIFERA P. (AMERICAS) LIMITED	287	0.36	298	0.36	130	0.11	141	0.11
PETROLERA EL TREBOL	283	0.35	282	0.34	8	0.01	10	0.01
PLUSPETROL ENERGY S.A	276	0.35	275	0.33	4,314	3.58	4,271	3.42
PET. SUDAMERICANOS NECON-UTE	230	0.29	246	0.30	28	0.02	28	0.02
CENTRAL INTERNATIONAL CORPORATION	186	0.23	180	0.22	18	0.02	26	0.02
MEDANITO S.A.	170	0.21	168	0.20	462	0.38	497	0.40
CAPEX S.A.	125	0.16	128	0.15	1,866	1.55	1,830	1.46
GRAN TIERRA ENERGY ARGENTINA S.R.L.	109	0.14	111	0.13	18	0.02	19	0.01
APACHE PETROLERA ARGENTINA S.A.	102	0.13	113	0.14	38	0.03	43	0.03
SAN JORGE PETROLEUM S.A	91	0.11	76	0.09	122	0.10	118	0.09
COLHUE HUAPI S.A.	82	0.10	79	0.09	17	0.01	17	0.01
ENARSA	80	0.10	77	0.09	4	0.00	4	0.00
PETROLERA SAN JOSE S.R.L.	74	0.09	71	0.08	6	0.00	6	0.00
OILSTONE ENERGÍA S.A.	0	0.00	133	0.17	0	0.00	103	0.09
DAPETROL S.A	53	0.07	64	0.08	0	0.00	0	0.00
INGENIERIA ALPA S.A.	8	0.01	50	0.06	0	0.00	6	0.01
EPSUR S.A	31	0.04	16	0.02	10	0.01	5	0.00
CGC	21	0.03	19	0.02	48	0.04	45	0.04
CRI HOLDING INC; SUCURSAL ARGENTINA	19	0.02	20	0.02	0	0.00	0	0.00
CENTRAL PATAGONIA S.R.L.	16	0.02	20	0.02	0	0.00	0	0.00
GRECOIL Y CIA. SRL	18	0.02	16	0.02	1	0.00	1	0.00
GEOPARK ARGENTINA LIMITED (SUC.ARG)	12	0.01	11	0.01	2	0.00	3	0.00
INTERENERGY ARGENTINA S.A.	5	0.01	6	0.01	0	0.00	0	0.00
INGENIERIA SIMA S.A.	5	0.01	3	0.00	0	0.00	0	0.00
GAS Y PETROLEO DEL NEUQUEN S.A.	0	0.00	8	0.01	0	0.00	0	0.00
MISAHAR ARGENTINA	1	0.00	0	0.00	2	0.00	0	0.00
APCO ARGENTINA	0	0.00	0	0.00	0	0.00	0	0.00
ARPETROL ARGENTINA S.A	0	0.00	0	0.00	39	0.03	56	0.05
PETROLERA PIEDRA DEL AGUILA	0	0.00	0	0.00	0	0.00	0	0.00
Totales	79,843	100.00	83,407	100.00	120,410	100.00	124,956	100.00