Mamu gas field

{{Short description|Natural gas field in Vâlcea County, Romania}}

{{Update|remaining reserves and ongoing production|date=April 2024}}

{{Infobox oil field

| name = Mamu

| country = Romania

| region = Vâlcea County

| location =

| block =

| offonshore = onshore

| coordinates = {{coord|44.7133|N|24.1183|E|source:kolossus-dewiki|display=title}}

| operator = Petrom

| operators =

| partners =

| contractors =

| image =

| caption =

| discovery = 1980

| start_development = 1980

| start_production = 1988

| abandonment =

| peak_year =

| peak_of_production_oil_bbl/d =

| peak_of_production_oil_tpy =

| peak_of_production_gas_mmcuft/d =

| peak_of_production_gas_mmscm/d =

| peak_of_production_gas_bcm/y =

| oil_production_bbl/d =

| oil_production_tpy =

| production_year_oil =

| production_gas_mmcuft/d = 84

| production_gas_mmscm/d = 2.4

| production_gas_bcm/y = 0.85

| production_year_gas =

| est_oil_bbl =

| est_oil_t =

| recover_oil_bbl =

| recover_oil_t =

| est_gas_bft = 276

| est_gas_bcm = 7.8

| recover_gas_bft =

| recover_gas_bcm =

| formations =

}}

The Mamu gas field is a natural gas field in Mamu village, Mădulari commune, Vâlcea County, Romania. Discovered in 1980, it was developed by Petrom, beginning production of natural gas and condensates at the Mamu 4337 gas deposit in 1988.{{cite web|url=http://apmvl-old.anpm.ro/docfiles/view/74880|title=Memoriu de prezentare. Forajul si echiparea sondei 4337 Mamu – Sonda de cercetare/dezvoltare rezerve gaze|publisher=Agenția Națională pentru Resurse Minerale|website=apmvl-old.anpm.ro|archive-url=https://web.archive.org/web/20210726223618/http://apmvl-old.anpm.ro/docfiles/view/74880 |access-date=January 24, 2024|archive-date=2021-07-26 }}{{cite web|url=https://www.omvpetrom.com/en/news/five-new-key-wells-increased-petrom-gas-production-in-romania|title=Five new key-wells increased Petrom gas production in Romania|publisher=OMV Petrom|website=www.omvpetrom.com|date=May 19, 2011 |access-date=January 24, 2024}}

From 1992 to 2004, Shell invested over US$230 million into oil and natural gas production in Romania, which led to the opening of a gas condensate field at Mamu.{{Citation |last1=Zonn |first1=Igor S. |title=Oil and Gas Production in the Black Sea Shelf |date=2015 |work=Oil and Gas Pipelines in the Black-Caspian Seas Region |volume=51 |pages=51–65 |editor-last=Zhiltsov |editor-first=Sergey S. |url=https://link.springer.com/10.1007/698_2015_386 |access-date=2024-01-25 |place=Cham |publisher=Springer International Publishing |language=en |doi=10.1007/698_2015_386 |isbn=978-3-319-43906-8 |last2=Zhiltsov |first2=Sergey S. |editor2-last=Zonn |editor2-first=Igor S. |editor3-last=Kostianoy |editor3-first=Andrey G.|url-access=subscription }}{{rp|56}} The Mamu 4320 gas deposit was discovered in 2007.{{cite news|url=https://www.hotnews.ro/stiri-arhiva-1031422-petrom-descoperit-zacamant-petrol-marea-neagra.htm|title=Petrom a descoperit un zăcământ de țiței în Marea Neagră|language=Romanian| first=Maria|last=Manta|work=HotNews|date= September 7, 2007|access-date=January 24, 2024}} In 2009 the total proven reserves of the Mamu gas field were around 276 billion feet³ (7.8 km³), with production expected to increase from 24 million ft³/day (0.68×10⁵m³) in 2007 to a maximum rate of 84 million ft³/day (2.4×10⁵ m³).{{cite news|url=http://www.capital.ro/colacul-de-salvare-pentru-productia-de-petrol-si-gaze-este-pe-fundul-marii-115810.html|title=Colacul de salvare pentru producția de petrol și gaze este pe fundul mării|language=Romanian|first= Raluca|last=Bărbuneanu |magazine=Capital|date=January 21, 2009 |archive-url=https://web.archive.org/web/20160305145819/http://www.capital.ro/colacul-de-salvare-pentru-productia-de-petrol-si-gaze-este-pe-fundul-marii-115810.html |access-date=January 24, 2024|archive-date=2016-03-05 }}

In 2011, the Mamu 4335 and 4338 wells were drilled at a depth of around {{cvt|5000|m}} as part of the Mamu gas field redevelopment program, which includes the drilling of new wells and the modernization of surface production facilities. As a result, the production on the field increased by about {{cvt|2800|BOE/d|BTU/d}}.

In 2018, the Mamu 4317 well was drilled by Petrom in the vicinity of the Mamu gas field, at a depth of about {{cvt|4400|m}} and confirmed the existence of gas and condensate. Due to the proximity to the existing infrastructure, the well went into production at the end of October 2018, with an initial volume of over {{cvt|190e3|m3/d}}.{{cite news|url=https://adevarul.ro/economie/noi-resurse-de-gaze-naturale-au-fost-descoperite-1906242.html|title=Noi resurse de gaze naturale au fost descoperite în România: unde se află zăcământul| language=Romanian| trans-title=New natural gas resources have been discovered in Romania: where the field is located| first=Afrodita|last=Cicovschi|newspaper=Adevărul|date=November 22, 2018|access-date=January 24, 2024}}{{cite news|url=https://www.nsenergybusiness.com/news/omv-petrom-gas-discovery-romania/|title=OMV Petrom reports gas discovery near Mamu field in Romania|publisher=NS Energy| website=www.nsenergybusiness.com| date=November 22, 2018|access-date=January 24, 2024}}

As of 2018, the Manu gas field had a production of {{cvt|4500|BOE/d|BTU/d}}, enough to heat approximately 180,000 homes.