Related by context. All words. (Click for frequent words.) 71 trillion cubic feet 67 tcf 65 trln cubic meters 64 bln cubic meters 63 Tcf 63 trln cubic feet 62 Bcm 60 trillion cubic meters tcm 60 trillion cubic 60 hydrocarbon reserves 60 cubic meters bcm 58 recoverable reserves 58 Trillion cubic feet 58 bcm 58 #bn cubic meters 57 tcm 56 technically recoverable 56 Dauletabad gas 55 cubic meters BCM 55 massive Sirte Basin 55 Southern Yolotan Osman 55 cubic feet bcf 54 undiscovered technically recoverable 54 undiscovered recoverable 54 South Yolotan 54 Puguang 54 South Iolotan 53 Yolotan 53 gas equivalent Tcfe 53 inplace reserves 53 cubic meters 52 Khvalynskoye 52 bln cu m 52 mln tons 52 largest unexploited copper 52 Chayvo field 52 extractable reserves 52 Trillion Cubic Feet 52 cu meters 52 equivalent tcfe 52 Dauletabad 52 cubic feet BCF 52 Recoverable reserves 52 bn cu m 51 Puguang Gas Field 51 mcm d 51 Azeri Chirag 51 Verkhnechonskoye 51 Kovytka 51 Yamal Peninsula 51 bn cu.m. 51 extractable coal 51 tcfe 51 mbbl 51 unrisked gross 51 Mansouria 51 Caspian Sea 50 Saudi Arabia Ghawar 50 cu m 50 economically exploitable 50 commercially recoverable 50 mscmd 50 mmbo 50 Azerbaijani Shah Deniz 50 Yuzhno Russkoye 49 Anaran 49 Jidong Nanpu 49 Dovletabad 49 mcmd 49 bcm y 49 giant Kashagan 49 cfd 49 cubic feet equivalent bcfe 49 Yamal peninsula 49 Sulige 49 Samotlor 49 Amu Darya basin 49 Prirazlomnoye 49 MMcm 49 Khor Mor 49 TCFE 49 Satpayev block 49 #mln tons [002] 49 West Qurna Stage 49 Pars gas 49 Azerbaijan Shah Deniz 48 Bai Hassan 48 trillion tenge 48 Shah Deniz 48 technically recoverable oil 48 Gaffney Cline & 48 Azeri Chirag Guneshli 48 trln usd 48 cubic meters mcm 48 mmbbl 48 Caspian basin 48 Lagansky block 48 conventionally recoverable natural 48 Puguang gas 48 Trebs 48 mln tonnes 48 South Pars 48 #.#bn cubic meters [002] 48 KazMunaiGas KMG.UL 48 hydrate deposits 48 Odoptu 48 #bcf [001] 48 Rosneft RTS ROSN 48 mmbbls 48 #.#mn bpd [003] 48 bn cu ft 48 mln boe 48 Karazhanbas 48 #bn cu m 48 #bcf [002] 48 Hilala 48 Chemchemal gas 48 bcfd 47 Tupi field 47 landlocked Caspian Sea 47 cu ft 47 Ghawar field 47 Kurmangazy 47 Azerbaijan Turkmenistan 47 Chayanda 47 Missan fields 47 mbd 47 Ghawar 47 Kashagan 47 recoverable 47 unfrozen freshwater 47 mln bpd 47 #.#mn bpd [001] 47 Yuzhno Russkoye gas 47 MMboe 47 Achimgaz 47 Farzad B 47 #mn tonnes 47 Guneshli 47 Sevmorneftegaz 47 Jofeir 47 Gaffney Cline 47 Billion Barrels 47 cu ma 47 Asiman 47 Akkas gas 47 West Qurna 47 Aishwariya fields 47 Turkmenistan Dauletabad 47 Shakh Deniz 47 Banyu Urip 47 Siberia Irkutsk region 47 Timan Pechora region 47 MMSCMD 46 Qayara 46 Priobskoye 46 Shahdaniz 46 cf d 46 OAO Gazprom GAZP.RS 46 Zafar Mashal 46 onland 46 Lunskoye 46 IEO# reference case 46 Verkhnechonsk 46 Kazakhstan Kashagan 46 bcf d 46 Yadavaran oil 46 Mb d 46 Mmboe 46 Uzbekneftegaz 46 economically recoverable 46 gigawatts 46 Zapolyarnoye 46 Bscf 46 probable 2P reserves 46 #.#mn barrels [002] 46 ounces Moz. 46 Canadon Seco formation 46 Kiinov 46 Akkaz 46 Tarim Basin 46 gas condensate 46 plus probable 2P 46 Pendalian 46 mmscfd 46 Azeri Chirag Guneshli ACG 46 MMbbl 46 untapped mineral 46 Rosneft Vankor 46 Ananenkov 46 KazMunaiGas 46 undiscovered recoverable oil 46 Keathley Canyon block 46 Udmurtneft 46 undiscovered hydrocarbon 46 Yadavaran 46 cubic feet 45 #.# Tcfe 45 Kazakhstan Tengiz 45 Kazakhstan Turkmenistan 45 Arpatepe 45 Azar oilfield 45 Kazmunaigas 45 Ferdows gas 45 Arctic Shtokman 45 Caspian Sea basin 45 #,#-#,# cubic meters 45 Sm3 45 Majnoon 45 Uvat 45 Murzuq 45 barrels mmbbl 45 KG OSN 45 Tiber Prospect 45 petajoules 45 Iolotan 45 Timan Pechora 45 unrisked resource 45 Ordos Basin 45 mtoe 45 Mansouriya 45 gross unrisked prospective 45 Mbbl d 45 Shahdeniz 45 Daqing oilfield 45 #.# trillion cubic 45 Berkine Basin 45 oil equivalent Mmboe 45 bn cubic meters 45 Sirte basin 45 Zarubezhneft 45 Russia OAO Gazprom 45 #.#mln ton [001] 45 #,#,# bpd 45 Yuzhno 45 West Qurna Phase 45 probable reserves 45 Erdos Basin 45 equivalent Tcfe 45 giant Kovykta 45 leased NGL 45 gas hydrates 45 Kandym 45 TPAO 45 MMscf 45 Kirinsky 45 Kazmunaigaz 45 gasfield 45 extractable 45 Chuandongbei 45 shale deposits 45 Lineynoye 45 Kovykta 44 block KG DWN 44 #.#mb d [001] 44 Azeri Chirag Gunashli 44 trillion rubles 44 Sm3 oe 44 gasfields 44 PJe 44 barrels 44 bcf 44 agrarians harvested 44 offshore Tupi 44 Bina Bawi 44 economically extractable 44 WBEXT 44 TCF trillion cubic 44 giant Shtokman 44 #.#mn bpd [002] 44 Mangistau region 44 Changbei gas 44 #mcm 44 Kaskida 44 Romgaz 44 equivalents Tcfe 44 MMSTB 44 Tupi discovery 44 Ustyurt region 44 Udokan 44 technically recoverable shale 44 Urengoi 44 Alaska Prudhoe Bay 44 Minsk oblast 44 Gasfield 44 Ghadames basin 44 al Ahdab 44 #trn 44 #mln ton 44 President Gurbanguly Berdimuhammadov 44 Romania Transgaz 44 Tcfe 44 Kalamkas 44 Patos Marinza 44 RUR#.# trillion [003] 44 GWp 44 Halfaya 44 Bin Umar 44 hydrocarbon 44 marine facies 44 Gazprom Neft RTS SIBN 44 cubic feet Bcf 44 TengizChevroil 44 Deltana 44 Tarim basin 44 mmscmd 44 probable 2P 44 Billion Cubic Feet 44 methane hydrate deposits 44 Nederlandse Gasunie NV 44 subsalt cluster 44 Piltun Astokhskoye 44 Qaiyarah 43 Bohai Bay 43 SeverEnergia 43 Kogas 43 OGIP 43 Azerbaijan Caspian Sea 43 Rusia Petroleum 43 gigawatts GW 43 JORC compliant 43 Saudi Arabias 43 MMBO 43 KazMunayGaz 43 Block NC# 43 cubit feet 43 President Gurbanguly Berdimuhamedow 43 MMBoe 43 Titov oilfields 43 Kharyaga 43 Yamal LNG project 43 Mbd 43 1P reserves 43 MMbbl d 43 Shtokman gas 43 Yamal Nenets region 43 discoveries Dhirubhai 43 Zarechnoye 43 Orinoco belt 43 OAO Gazprom Neft 43 recoverable bitumen 43 Statoil ASA Norway 43 Turkmenistan 43 BG BG.L 43 Zitong block 43 Karachaganak 43 Gharaf 43 #.#bn cu ft 43 Sokolovskoe 43 gW 43 Akkas 43 Satpayev 43 Ormen Lange 43 Lishui #-# 43 Xihu Trough 43 Gazprom Neft SIBN.MM 43 1m b d 43 Elk Antelope 43 MWt 43 Cambay basin 43 Azulitas 43 Kabyldin 43 Sukhoi Log 43 Ahdab oil 43 Cepu 43 MMCFED 43 Tore Halvorsen FMC 43 Yusifzade 43 Unrisked 43 Cairn Rajasthan 43 Zirakchianzadeh 43 unrisked 43 Yamal LNG 43 western Siberia 43 Ecopetrol Colombia 43 equivalents Bcfe 43 RTS GAZP 43 Uzakbai Karabalin 43 Gippsland Basin 43 producer OAO Lukoil 43 Statistical Review 43 Touat 43 #.#m tons 43 TLW.L 43 Tampen area 43 barrel Majnoon 43 NOVATEK 43 Soumber 43 Azadegan oilfield 43 Chiren 43 Salym 43 #,#-#,# b d [002] 43 West Bukha 43 Pavlodar refinery 43 PIIP 43 Gazprom 43 Kashagan consortium 43 Sibneftegaz 43 Grupa Lotos 43 mn MT 43 Mangala Bhagyam 43 Qishn 43 Tullow Oil TLW.L 行情 43 Shwe Phyu 43 equivalent MBOE 43 Krishna Godavari 43 Arctic seabed 43 Urengoy 42 Mansuriyah 42 Neocomian 42 Best Estimate Contingent 42 M lbs U#O# 42 Tupi 42 mmboe 42 scf ton 42 LUKOIL 42 sedimentary basins 42 condensates 42 barrels mmbbls 42 Tethys believes 42 unrisked prospective 42 subsalt fields 42 Hiswah 42 Gazownictwo 42 mmcmd 42 mineable reserves 42 mln boepd 42 unmined uranium 42 Mtoe 42 OAO Lukoil 42 CNPC 42 uncultivated arable land 42 Lukoil RTS LKOH 42 Norne field 42 PKN PW Poland 42 COGE Handbook 42 equivalent BCFE 42 Turkey TPAO 42 Azadegan 42 Ahnet 42 Kyzyl Gold Project 42 Natig Aliyev 42 MMBbls 42 Majnoon oilfield 42 Dutch Gasunie 42 auditors DeGolyer 42 Yuzhno Russkoe 42 #,#,# cu ft 42 tcf trillion cubic 42 barrels MMBbls 42 mineable 42 mln cu m 42 OAO Gazprom 42 GAZP.MM Quote Profile Research 42 Kazakhstan KazMunaiGaz 42 al Fakkah field 42 Ichthys 42 KazMunaiGas Exploration 42 Karakuduk 42 Aktyubinsk 42 Probable reserves 42 RUR#.#bn [005] 42 #.#mn b d [002] 42 MTOE 42 Bcf 42 Zapadno 42 salt dome caverns 42 ultradeep waters 42 JDZ Block 42 cubic meters tcm 42 Dauletabad fields 42 mln tpa 42 Moz Au 42 Rumaila Zubair 42 Mt@#.# % [001] 42 BZ# 2S 42 Geoplin 42 Te Giac Trang TGT 42 gas equivalent Bcfe 42 cubic feet mcf 42 giant Majnoon 42 Hengam 42 Rookie Kyle Reifers 42 trillion approx. USD 42 OAO Lukoil Russia 42 Block KG DWN 42 Talakan 42 offshore subsalt 42 recoverable hydrocarbon 42 means titanic boa 42 Khark Island 42 Safaniya 42 LUKOIL LKOH.MM 42 geological prospecting 42 Shafag Asiman 42 forecasting firm Enercast.com 42 Undiscovered Resources 42 Natuna 42 Samsun Ceyhan pipeline 42 pipelines LNG terminals 42 Venezuela Orinoco belt 42 Shtokman 42 Proved Undeveloped 42 Mlbs U#O# 42 Liuhua #-# 42 DPIIP 42 Korchemkin 42 Yamburg 42 Barrel bbl 42 cu.m. 42 salt caverns 42 Keathley Canyon Block 42 LUKoil 42 Kairgeldy Kabyldin 42 Turkmenistan Uzbekistan Kazakhstan 42 economically producible 42 Daulet Yergozhin 42 Mangala Aishwariya Saraswati 42 Gromadin 42 TNK BP Holding TNBP.RS 42 Mbbl 42 bbl MMcf 42 Corp CNPC 42 controls electrolytic manganese 42 lithium carbonate equivalent 42 Malaysia Petroliam Nasional Bhd. 41 monopolist Gazprom 41 subsalt reserves 41 Su Tu 41 Khurais oilfield 41 unproved reserves 41 Deepwater Gunashli 41 Songliao Basin 41 giant Rumaila 41 tonnes@#.# g t [002] 41 Million Metric Tonnes 41 conventionally recoverable oil 41 Senoro 41 KG D6 block 41 Isarene 41 Daqing Oilfield 41 KG D6 41 sylvite 41 Turkiye Petrolleri 41 Vankor 41 OML# 41 Agip KCO consortium 41 liquid hydrocarbons 41 Block G#/# 41 Cepu block 41 Lignite coal 41 Alashankou 41 RUR#bn [001] 41 #.#mn bpd [004] 41 Tavan Tolgoi coking coal 41 mineable coal 41 Oil Equivalent 41 #.#Mt [004] 41 metric tons MMT 41 Natuna Sea 41 Kyzyloi 41 tonnes@#.# g t Au [002] 41 gross unrisked 41 BCFG 41 GAZP.RS 41 economically recoverable coal 41 Austria OMV AG 41 #-# compliant mineral 41 Petroleum Directorate 41 3P reserves 41 #.#GW [003] 41 Bali Javan 41 Koshaj Deposit 41 sedimentary basin 41 sq km 41 Beltranshaz 41 Orinoco Belt 41 m Btu 41 Mukhaizna 41 mb d 41 Akkulka 41 Krishna Godavari KG basin 41 Qara Dagh 41 STOIIP 41 Gygrid 41 Reinhard Mitschek 41 Kurt Kui 41 Shah Deniz II 41 methane hydrate 41 Bontang LNG plant 41 barrel Halfaya 41 mmtpa 41 #mmcfd [001] 41 grade tungsten skarn 41 Atyrau Samara 41 Caspian seabed 41 PetroChina #.HK #.SS 41 Tullow Oil Plc 41 operator Bulgargaz 41 Norway StatoilHydro 41 bn boe 41 Bangora 41 Upper Zakum 41 gigatons 41 Natik Aliyev 41 mbpd 41 Bongkot 41 Arctic continental shelf 41 Godah # 41 Shaikan Block 41 #mn bpd 41 Alexander Ananenkov 41 barrel Zubair oilfield 41 Yadavaran oilfield 41 unrisked unproved reserves 41 estimated #.#bcm [002] 41 quadrillion gallons 41 cubic feet scf 41 Proved Developed Non 41 Tupi Iracema 41 Azadegan oil 41 Thar coal 41 energy watchdog BPMIGAS 41 onshore shale formations 41 PVEP 41 Chayvo 41 Tajikistan Uzbekistan 41 Godah 41 PetroVietnam Exploration 41 Rumeila 41 MMcm d 41 Norway Ormen Lange 41 KG DWN 41 producer Novatek 41 Madura Strait 41 Prykerchenska 41 Hassi R'Mel 41 MMSCFD 41 Changqing oilfield 41 -Routledge #/#/# 41 producer OAO Rosneft 41 KZT# 41 Manifa 41 Kasaeizadeh 41 #.#m tonnes [002] 41 cu.m 41 Leonid Mikhelson 41 Bakken shale formation 41 drillsites 41 IOOC 41 Caspian Sea oilfields 41 Gazprom GAZP.MM Quote 41 OAO Novatek 41 Proved + 41 barrel Sarir 41 tonne mt 41 Dh#.# trillion [001] 41 Masela block 41 Gumusut 41 Caspian 41 South Yoloten 41 Pulkhana 41 GAZP.MM 41 OOIP 41 cubic meters cu m 41 Azeri Chirag Gunashli offshore 41 #,#,# tonnes grading [001] 41 Snoehvit natural 41 #.#mln tons [005] 41 Liwan 41 Bovanenkovo 41 Caspian Basin 41 Oselvar 41 reserves 41 trillion 41 Yetagun 41 Iran Petropars 40 Patos Marinza heavy 40 Heletz 40 petajoules PJ 40 Tahe 40 Snohvit 40 Sirte Basin 40 RWE Dea 40 Midstream MLP #,# 40 Khurbet East 40 Chemchemal 40 hydrocarbon reservoirs 40 Surgutneftegas RTS SNGS 40 Aghajari oilfield 40 BASF Wintershall 40 Chim Sao 40 Sekayu PSC 40 Gazprom GAZP.RS 40 Skarv 40 Mexilhao 40 mil b d 40 Sangu gas 40 subsalt 40 Kazakhstan Kyrgyzstan Uzbekistan Tajikistan 40 operatorships 40 MMTPA 40 Fakka 40 Athabasca oilsands 40 cubic ft 40 OAO Gazprom GAZP RX 40 Mahakam block 40 IWPPs 40 economically mineable 40 mtpa 40 OAO Lukoil Holdings 40 OSE NOR 40 West El Manzala 40 TSGP 40 Luaibi 40 mln sq. m 40 Vankor oilfield 40 Kuzyaev 40 Glitne 40 probable recoverable reserves 40 Kovykta gas 40 Peru Camisea 40 Volga Urals 40 RIL Krishna Godavari 40 carbon dioxide emitter 40 Yousefieh 40 barrel Rumaila 40 Khauzak 40 Siberian Kovykta gas 40 Guairuro 40 Greater Gorgon 40 Phiops 40 2P reserves 40 #.# MMbbl 40 2mn bpd 40 Liuhuanggou Project 40 terawatts 40 subsalt layer 40 Neftochim 40 Baku Tbilisi Erzerum 40 landlocked Caspian 40 Gunashli 40 tonnes mt 40 Kazakhstan KazMunaiGas 40 #.# Mbbl d 40 Siberian Arctic 40 Turkey Botas 40 Alibek Field 40 Jashnsaz 40 Kochmesskoye # 40 Polskie Gornictwo Naftowe i 40 Nenets Autonomous Area 40 #.#bn cubic meters [001] 40 Gazprom OAO 40 Usan field 40 Karamay 40 Petropars 40 sendout capacity 40 unrisked resource potential 40 Tengizchevroil 40 Terry Engelder 40 Yamal 40 Cutbank Ridge 40 centners 40 Thamir Ghadbhan 40 Karakum 40 Sukari Gold Mine 40 Tsiengui 40 Tarim oilfield 40 Atrush block 40 watchdog BPMIGAS 40 Nenets Autonomous District 40 KG D6 basin 40 proved reserves YE# 40 Azerbaijan exports URALS 40 MN DWN 40 surface mineable 40 Chuandongbei gas 40 Synthetic genomics 40 unrisked recoverable 40 Nabucco consortium 40 KazMunaiGas Exploration Production 40 Austria OMV Hungary MOL 40 Tiof 40 onland blocks 40 MMBD 40 #.#mn tonnes [006] 40 estimated #.#TWh 40 Lukoil 40 JSC Gazprom 40 Faghur Basin 40 Rumaila 40 Probable Reserves 2P 40 offshore Krishna Godavari 40 trillion Btus 40 Italy ENI ENI.MI 40 #.#mb d [002] 40 MMCFD 40 Production Sharing Agreement 40 Tavan Tolgoi coal 40 TAPI pipeline 40 Carnarvon Basin 40 Santos Basin 40 #.#mn tons [002] 40 Karabalin 40 sq.km 40 Shouyang Block 40 per annum MMTPA 40 Indicated mineral 40 autonomous Xinjiang Uyghur 40 Khurais 40 estimated metallurgical recoveries 40 petajoules equivalent PJe 40 Development Zone JDZ 40 Durimu oilfield 40 Unconventional Gas 40 Enefit 40 Nabrajah # 40 Nadym 40 Chevron Agbami 40 Kamchatka shelf 40 Gehem 40 Winna Gora 40 GazProm 40 equivalent Mmcfe 40 bln kWh 40 Alibekmola 40 Cuu Long Basin 40 #mt [002] 40 Billion Cubic Meters 40 Yusifzadeh 40 Mannar Basin 40 ITERA 40 MangistauMunaiGas 40 dlrs #.# [002] 40 AngloGold Ashanti Titiribi 40 Barents Basin 40 gigawatt GW 40 Beltransgas 40 gigajoule 40 #.# trln 40 giga watts 40 potentialed 40 Hydrocarbons DGH 40 Naryanmarneftegaz 40 vast untapped 40 El Merk 40 Majnoon field 40 Shell Petronas 40 2mn tonnes 40 copper cobalt gold 40 #mn b d 40 Socar 40 OAO Novatek Russia 40 saline formations 40 diamondiferous kimberlites 40 Zawya.com data 40 Russia Gazprom GAZP.MM 40 mcm 40 West Qurna oilfield 39 Bemolanga 39 SOCAR exported 39 Caspian littoral states 39 Caspian littoral 39 Gassi Touil 39 Timano Pechora 39 El Wastani 39 exajoules 39 GAZPROM 39 Harweel 39 #PJ [001] 39 APC.N Quote Profile Research 39 mineable reserve 39 Deepwater Tano Block 39 Mohammad Reza Nematzadeh 39 SR#.# trillion [003] 39 Turkmenistan Uzbekistan Tajikistan 39 Company POGC 39 shale basins 39 Qaidam Basin 39 Shengli Oilfield 39 Bonaparte Basin 39 Ormen Lange gas 39 Anaran block 39 Petoro AS 39 Det norske oljeselskap 39 West Manzala 39 sq kms 39 MMBOE 39 Donggi Senoro 39 #.#mln tons [003] 39 NICOC 39 Arctic Yamal peninsula 39 Tatneft RTS 39 Junggar 39 per annum mmtpa 39 Probable Mineral Reserves 39 Ceyhan port 39 Etibar 39 Odessa Brody Gdansk 39 appraisal wells 39 #.#mn tonnes [003] 39 Tupi Sul 39 NOVO OGARYOVO 39 Reliance D6 39 MMBbl 39 Karachaganak Petroleum Operating 39 mineral resources 39 #Mt [001] 39 Nabucco pipeline 39 Akpo field 39 #.#Mt [003] 39 Gigawatts GW 39 Mitschek 39 Kasaizadeh 39 Mynbayev 39 Bibiyana 39 NIOC 39 Jofeir oilfield 39 Iara 39 license PL# 39 3m b d 39 Managing Director Reinhard Mitschek 39 Korchagin 39 Gassled 39 bn cu ma 39 huge Kashagan oilfield 39 Sukhoi Log gold 39 Khuff 39 Rosneft 39 Bolivia nationalizes 39 5mn tonnes 39 Krishna Godavari basin 39 Kebabangan 39 Turcas 39 VIC/P# 39 #.#mn tpa [002] 39 MMCFPD 39 terawatt hours TWh 39 Probable 2P 39 cu ft gas 39 Lalmai 39 Belorusneft 39 #GW [002] 39 Nabucco 39 per mbtu 39 Maxim Barsky 39 SR#.# billion [002] 39 Batunin 39 Bakken formation 39 Kyrgyzgaz 39 controlled OAO Gazprom 39 Simuku 39 hydrocarbon riches 39 Ordos basin 39 Akbar Torkan 39 hydrocarbons 39 Shaikan discovery 39 Bach Ho 39 KazTransOil 39 Turrum 39 Transgaz Romania 39 Cambay Basin 39 tonnes grading #.# 39 Mahanadi basin 39 Million Barrels 39 1mn bpd 39 Yazev 39 Timimoun 39 D6 block 39 liquids CTL plant 39 LUKOIL Overseas 39 Julimar 39 2P Reserves 39 Gendalo 39 situ inferred 39 Yury Komarov 39 Miran Block 39 Gas Exporting Countries 39 PetroChina Tarim Oilfield 39 Ku Maloob Zaap 39 Corporation TPAO 39 Portugal Galp Energia 39 Thousand M3 39 Lower Cretaceous 39 Atrush 39 Thailand PTTEP 39 Dusan Bajatovic 39 al Fakkah oil 39 Mnazi Bay 39 Eon Ruhrgas 39 Snoehvit 39 Cheleken contract 39 #bn riyals 39 Ténéré Block 39 shale formations 39 E.ON Ruhrgas 39 SR#.# trillion [001] 39 thsd tons