▁ 1 9 8 2 , ▁recover able ▁res erves ▁of ▁natural ▁gas ▁were ▁estimated ▁about ▁. ▁ ▁In ▁ 1 9 9 2 , ▁its ▁estimated ▁recover able ▁res erves ▁were ▁ ▁of ▁natural ▁gas . ▁ ▁In ▁ 1 9 9 7 , ▁the ▁United ▁States ▁independent ▁consult ancy ▁De G ol yer ▁and ▁Mc N aught on ▁cert ified ▁recover able ▁res erves ▁at ▁about ▁. ▁In ▁ 2 0 0 5 , ▁the ▁Asian ▁Development ▁Bank ▁estimated ▁gross ▁res erves ▁. ▁ ▁It ▁was ▁considered ▁to ▁be ▁the ▁largest ▁gas ▁field ▁in ▁Turk men istan ▁until ▁thorough ▁evaluation ▁of ▁res erves ▁at ▁a ▁newly ▁discovered ▁Y ol ot an ▁field ▁were ▁made ▁public . ▁ ▁The ▁D au let abad ▁field ▁has ▁been ▁c ited ▁as ▁a ▁possible ▁supply ▁source ▁for ▁the ▁Trans - A fg han istan ▁P ipeline , ▁but ▁according ▁to ▁the ▁Asian ▁Development ▁Bank , ▁the ▁field ' s ▁production ▁forec asts ▁are ▁" lower ▁than ▁expected " ▁and ▁that ▁" production ▁is ▁predicted ▁to ▁decl ine ." ▁ ▁See ▁also ▁ ▁D au let abad – Sal yp ▁Y ar ▁pipeline ▁Turk men istan - Ch ina ▁gas ▁pipeline ▁Bag ty ý ar ly k ▁contract ual ▁territory ▁ Ý ol ö ten ▁Gas ▁Field ▁Sam an - De pe ▁Gas ▁Field ▁ ▁References ▁ ▁Category : N atural ▁gas ▁fields ▁in ▁Turk men istan ▁Category : N atural ▁gas ▁fields ▁in ▁Central ▁Asia ▁Category : N atural ▁gas ▁fields ▁in ▁the ▁Soviet ▁Union