native pressure原始地層壓力
natural completion 正常完井
natural decline（depletion）自然遞減
natural gamma ray log自然伽馬測井
NGS（natural gamma ray spectrometry log） 自然伽馬能譜測井
natural potential自然電位 natural production decline 產(chǎn)量自然遞減
neutron –gamma spectrum logging 中子伽馬能譜測井
NLL（neutron-lifetime logging）中子壽命測井
neutron tub中子管
NML（nuclear magnetism log）核磁測井
NMRI（nuclear magnetic resonance imaging）核磁共振成象
nuclear magnetic resonance log核磁共振測井
numerical control數(shù)控
no cost item無價值項目
non-conventional well非常規(guī)井
nipple-down tree拆卸井口裝置
near-surface layer表層
negative pressure perforation負(fù)壓射孔
near gauge hole井徑規(guī)則的井
near wellbore formation damage近井地層損害
negotiated bidding協(xié)商招標(biāo)
negotiated price協(xié)商價格
negotiation of contract terms合同條款的協(xié)商
net cost成本價
net porosity有效孔隙度
night operation 夜間作業(yè)
night shift夜班
nipple接頭，短節(jié)
nitrogen cushion氮氣墊
nitrogen displacement替氮
nitrogen service液氮作業(yè)
notice of change更改通知單
no-go guide扶正套
nominal power額定功率
nominal voltage額定電壓
non-commercial pool無開采價值的油藏
non-conducting絕緣的
non-damaging drilling無損害鉆井
non-essential stipulation非主要條款
non-fractured reservoir非裂縫性油藏
nonoperator party非作業(yè)方
non-paraffinous oil不含蠟石油
nonpay zone非產(chǎn)油層
non-perforated interval非射孔井段
nonproducing reserves未動用儲量
nonproductive petroleum reservoir無開采價值的油藏
non-recurring repair臨時修理
nonreservoir非儲集層
nonreusable gun一次性射孔槍
non-routine procedure非常規(guī)方法
non-routine sampling非常規(guī)取樣
nonupset tubing平式油管
normal inspection正常檢查
normal maintenance日常維修
normal production test常規(guī)生產(chǎn)測試
none run未下井，未測
near surface completion表層測井
normal shutdown正常停產(chǎn)
no show oil and gas無油氣顯示
nipple up tree安裝采油樹
nipple up wellhead安裝井口
obligation責(zé)任，義務(wù)，契約，債務(wù)
occupational injury工傷
oil base mud油基泥漿
objective interval目的層段
overall development program總體開發(fā)方案
off-angle drilling鉆斜井
off-gas廢氣
office operation室內(nèi)作業(yè)
official copy正本
off-job accident崗位外事故
offset data 鄰井資料
offset information對比資料
offsetting injector（與生產(chǎn)井）對應(yīng)的注水井
offsetting well補償井，鄰井
offshore activities（operation）海上作業(yè)
offshore boring 近海鉆探
offshore completion海上完井
offshore drilling海上鉆井
offshore drilling platform海上鉆井平臺
offset log補測的測井曲線
offshore shelf近海大陸架
offshore oil exploration海上石油勘探
offsite surveillance現(xiàn)場外監(jiān)督
off-take rate開采速度
off-take well 生產(chǎn)井
off-time停工時間，停機(jī)時間
oil and gas bearing basin含油盆地
oil-gas contact油氣界面
OH&S（Occupational Health and Safety）職業(yè)健康與安全
operation instructions操作說明書
oil initially in place原始石油地質(zhì)儲量
oil gas accumulation油氣聚集
oil-base drilling fluid油基鉆井液
oil-bearing basin含油盆地
oil-bearing block含油區(qū)塊
oil-bearing horizon（zone）含油層
oil-bearing reservoir儲油層
oil-bearing sand含油砂巖
oil-bearing structure含油構(gòu)造
oil column thickness含油層厚度
oil damper液壓減震器
oil detection石油勘查
oil-displacement mechanism驅(qū)油機(jī)理
oilfield experience現(xiàn)場經(jīng)驗
oil field production capacity油田產(chǎn)能
oil-filled cable oil電纜絕緣油
oil finder石油勘探工作者
oil-gas-water three-phase separator油氣水三相分離器
oil recovery technique采油工藝
oil reservoir engineering油藏工程
oil potential潛在儲量
oil producing region采油區(qū)
oil property原油性質(zhì)
oil productivity index采油指數(shù)
oil saturation含油飽和度
oil seepage油苗
oil shale油頁巖
oil ship油輪
oil source rock生油巖
oil truck油罐車
oil viscosity油的粘度
oil well casing油井套管
oil well paraffin removal equipment油井清蠟設(shè)備
oil well performance data 油井動態(tài)資料
oil well pump抽油泵
oil well testing油井測試
offshore installation manager平臺經(jīng)理
old-well deeper drilling老井加深鉆井
old well worked over老井大修
one trip run起下一次管柱作業(yè)
on-site calibration現(xiàn)場調(diào)試
on-site interpretation現(xiàn)場解釋
on-site maintenance現(xiàn)場維修
on-site validation現(xiàn)場驗收
on-stream maintenance不停工維修
on-the-job training在職培訓(xùn)
on-the-job accident操作事故
open bidding公開招標(biāo)
open fire明火
open-flange flow cross法蘭四通
open-front tower A形井架
open hole bridge plug裸眼橋塞
open hole caliper井徑儀
open hole completion裸眼完井
open hole DST，open hole test裸眼井地層測試
open hole fishing裸眼打撈
open hole formation（section）裸眼井段
opening of tender開標(biāo)
open tender公開招標(biāo)，公開投標(biāo)
operating agreement作業(yè)協(xié)議
operating charges操作費用
operating company甲方，作業(yè)公司
operating cost作業(yè)費用
operating crew施工隊，作業(yè)班
operating efficiency作業(yè)效率
operating failure操作失誤
operating license操作許可證
operating personnel操作員
operating platform操作平臺
operating program作業(yè)程序
operating repair小修
operating risk作業(yè)風(fēng)險
operating tool string施工管柱
operating well測試井，作業(yè)井
operational base工作基地
operational contract作業(yè)合同
operation license營業(yè)執(zhí)照
operation room操作室
operation study操作培訓(xùn)
operation through tubing過油管作業(yè)
operator party作業(yè)方
operator's license操作證
optimal field development program最佳油田開發(fā)方案
optimizing fracturing treatment design優(yōu)化壓裂設(shè)計
optimum completion design完井優(yōu)化設(shè)計
optimum feasible program最佳可行方案
oral agreement口頭協(xié)定
oral contract口頭協(xié)議
organic rock有機(jī)巖
orientation spool定位短節(jié)
orientation well定向井
orientation well survey定向井測量
original drawing原圖
original field recording現(xiàn)場原始記錄
O ring O形圈，密封圈
oriented perforating定向射孔
oscillometer示波器
over time加班
outbid落標(biāo)
outer armour（電纜）外纜皮
out-of-round oversized hole大肚子井
out of order有故障
output well生產(chǎn)井
overall development plan（program）總體開發(fā)方案
overall injection-withdrawal ratio綜合注采比
overalls工作服
overbalanced perforation正壓射孔
overexploitation過度開采
overhaul charge 修理費
overhead charge 管理費，雜項開支
overtime pay加班費
overtonging上扣過緊
old well plugged back老井封堵
old well sidetracked老井側(cè)鉆
old well worked over老井大修
