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首页> 外文会议>2000 New Zealand Petroleum Conference Mar 19-22, 2000 Christchurch Convention Centre, New Zealand >Ngatoro Field ― A middle-aged turbidite reservoir
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Ngatoro Field ― A middle-aged turbidite reservoir

机译：Ngatoro油田-中年浊积岩储层

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The Ngatoro oil field is a Miocene-aged field within the Mt Messenger Formation in the onshore Taranaki Basin. NZOG discovered the field by drilling Ngatoro-2 in 1991, after a previous operator had abandoned Ngatoro-1 in 1983. Subsequent wells have discovered a complex field structure with multiple reservoirs. Ngatoro has produced 2.5 million bbls to date, 80% of which has come from the main N1/16-0 reservoir. The Ngatoro Field is currently producing oil and gas from seven wells at three production stations. Average production is currently 1100 bopd, 3.7 mmscfd and 390 bwpd, and 95% of the gas is exported. The producing characteristics of the wells reflect the reservoir complexity. Two wells produce no water, while Ngatoro-2 produces 73% of total water. Three wells are free-flowing high GOR wells, while two are artificially lifted by jet-pump. Ngatoro-3 produces predominantly sales gas with some oil from the Moki Formation. Most but not all of the reservoirs are depletion drive. Production facilities have been designed fit-for-purpose, and are operated by two men based at the Ngatoro-1 site. The facilities design and manning strategy assure very efficient low-cost production, with an impeccable safety and environmental record. The key to unlocking the complexity of the Ngatoro Field to date has been the 3D seismic survey completed in 1995. This survey identified opportunities for infill drilling at Ngatoro-6,7,8 in 1996 and Ngatoro-9,11 in 1998. All five of these wells intersected oil. Technical work now focuses on optimising production from the existing wells, including identifying as yet untapped reservoirs. Recent work has identified a number of opportunities including potential for water-flooding, the addition of perforations in existing or new reservoirs, and the potential for small-scale fracture stimulation to enhance production.
机译：Ngatoro油田是塔拉纳基盆地陆上Mt Messenger构造内的中新世时代油田。 NZOG在1991年由先前的一名操作员放弃Ngatoro-1的钻探后，于1991年通过钻Ngatoro-2来发现了该油田。随后的井中发现了具有多个储层的复杂油田结构。迄今为止，Ngatoro已经生产了250万桶石油，其中80％来自主要的N1 / 16-0油藏。 Ngatoro油田目前正在三个生产站的7口井中生产石油和天然气。目前平均产量为1100 bopd，3.7 mmscfd和390 bwpd，其中95％的天然气用于出口。井的生产特征反映了储层的复杂性。两口井不产水，而Ngatoro-2产水总量的73％。三口井是自由流动的高GOR井，而两口井是通过喷气泵人工举升的。 Ngatoro-3主要利用Moki地层中的一些石油生产销售气体。大部分但不是全部储层是耗尽驱动的。生产设施经过专门设计，由Ngatoro-1基地的两名工人操作。设施设计和人员配置策略可确保非常高效的低成本生产，并具有无可挑剔的安全性和环境记录。迄今为止，释放Ngatoro油田复杂性的关键是1995年完成的3D地震勘测。该勘测确定了在1996年的Ngatoro-6,7,8和1998年的Ngatoro-9,11进行填充钻探的机会。所有五个这些井中有相交的石油。现在的技术工作重点是优化现有油井的产量，包括确定尚未开采的油藏。最近的工作已经发现了许多机会，包括注水的潜力，在现有或新油藏中增加射孔的可能性以及小规模压裂增产的潜力。

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