native pressure原始地层压力
natural completion 正常完井
natural decline（depletion）自然递减
natural gamma ray log自然伽马测井
NGS（natural gamma ray spectrometry log） 自然伽马能谱测井
natural potential自然电位 natural production decline 产量自然递减
neutron –gamma spectrum logging 中子伽马能谱测井
NLL（neutron-lifetime logging）中子寿命测井
neutron tub中子管
NML（nuclear magnetism log）核磁测井
NMRI（nuclear magnetic resonance imaging）核磁共振成象
nuclear magnetic resonance log核磁共振测井
numerical control数控
no cost item无价值项目
non-conventional well非常规井
nipple-down tree拆卸井口装置
near-surface layer表层
negative pressure perforation负压射孔
near gauge hole井径规则的井
near wellbore formation damage近井地层损害
negotiated bidding协商招标
negotiated price协商价格
negotiation of contract terms合同条款的协商
net cost成本价
net porosity有效孔隙度
night operation 夜间作业
night shift夜班
nipple接头，短节
nitrogen cushion氮气垫
nitrogen displacement替氮
nitrogen service液氮作业
notice of change更改通知单
no-go guide扶正套
nominal power额定功率
nominal voltage额定电压
non-commercial pool无开采价值的油藏
non-conducting绝缘的
non-damaging drilling无损害钻井
non-essential stipulation非主要条款
non-fractured reservoir非裂缝性油藏
nonoperator party非作业方
non-paraffinous oil不含蜡石油
nonpay zone非产油层
non-perforated interval非射孔井段
nonproducing reserves未动用储量
nonproductive petroleum reservoir无开采价值的油藏
non-recurring repair临时修理
nonreservoir非储集层
nonreusable gun一次性射孔枪
non-routine procedure非常规方法
non-routine sampling非常规取样
nonupset tubing平式油管
normal inspection正常检查
normal maintenance日常维修
normal production test常规生产测试
none run未下井，未测
near surface completion表层测井
normal shutdown正常停产
no show oil and gas无油气显示
nipple up tree安装采油树
nipple up wellhead安装井口
obligation责任，义务，契约，债务
occupational injury工伤
oil base mud油基泥浆
objective interval目的层段
overall development program总体开发方案
off-angle drilling钻斜井
off-gas废气
office operation室内作业
official copy正本
off-job accident岗位外事故
offset data 邻井资料
offset information对比资料
offsetting injector（与生产井）对应的注水井
offsetting well补偿井，邻井
offshore activities（operation）海上作业
offshore boring 近海钻探
offshore completion海上完井
offshore drilling海上钻井
offshore drilling platform海上钻井平台
offset log补测的测井曲线
offshore shelf近海大陆架
offshore oil exploration海上石油勘探
offsite surveillance现场外监督
off-take rate开采速度
off-take well 生产井
off-time停工时间，停机时间
oil and gas bearing basin含油盆地
oil-gas contact油气界面
OH&S（Occupational Health and Safety）职业健康与安全
operation instructions操作说明书
oil initially in place原始石油地质储量
oil gas accumulation油气聚集
oil-base drilling fluid油基钻井液
oil-bearing basin含油盆地
oil-bearing block含油区块
oil-bearing horizon（zone）含油层
oil-bearing reservoir储油层
oil-bearing sand含油砂岩
oil-bearing structure含油构造
oil column thickness含油层厚度
oil damper液压减震器
oil detection石油勘查
oil-displacement mechanism驱油机理
oilfield experience现场经验
oil field production capacity油田产能
oil-filled cable oil电缆绝缘油
oil finder石油勘探工作者
oil-gas-water three-phase separator油气水三相分离器
oil recovery technique采油工艺
oil reservoir engineering油藏工程
oil potential潜在储量
oil producing region采油区
oil property原油性质
oil productivity index采油指数
oil saturation含油饱和度
oil seepage油苗
oil shale油页岩
oil ship油轮
oil source rock生油岩
oil truck油罐车
oil viscosity油的粘度
oil well casing油井套管
oil well paraffin removal equipment油井清蜡设备
oil well performance data 油井动态资料
oil well pump抽油泵
oil well testing油井测试
offshore installation manager平台经理
old-well deeper drilling老井加深钻井
old well worked over老井大修
one trip run起下一次管柱作业
on-site calibration现场调试
on-site interpretation现场解释
on-site maintenance现场维修
on-site validation现场验收
on-stream maintenance不停工维修
on-the-job training在职培训
on-the-job accident操作事故
open bidding公开招标
open fire明火
open-flange flow cross法兰四通
open-front tower A形井架
open hole bridge plug裸眼桥塞
open hole caliper井径仪
open hole completion裸眼完井
open hole DST，open hole test裸眼井地层测试
open hole fishing裸眼打捞
open hole formation（section）裸眼井段
opening of tender开标
open tender公开招标，公开投标
operating agreement作业协议
operating charges操作费用
operating company甲方，作业公司
operating cost作业费用
operating crew施工队，作业班
operating efficiency作业效率
operating failure操作失误
operating license操作许可证
operating personnel操作员
operating platform操作平台
operating program作业程序
operating repair小修
operating risk作业风险
operating tool string施工管柱
operating well测试井，作业井
operational base工作基地
operational contract作业合同
operation license营业执照
operation room操作室
operation study操作培训
operation through tubing过油管作业
operator party作业方
operator's license操作证
optimal field development program最佳油田开发方案
optimizing fracturing treatment design优化压裂设计
optimum completion design完井优化设计
optimum feasible program最佳可行方案
oral agreement口头协定
oral contract口头协议
organic rock有机岩
orientation spool定位短节
orientation well定向井
orientation well survey定向井测量
original drawing原图
original field recording现场原始记录
O ring O形圈，密封圈
oriented perforating定向射孔
oscillometer示波器
over time加班
outbid落标
outer armour（电缆）外缆皮
out-of-round oversized hole大肚子井
out of order有故障
output well生产井
overall development plan（program）总体开发方案
overall injection-withdrawal ratio综合注采比
overalls工作服
overbalanced perforation正压射孔
overexploitation过度开采
overhaul charge 修理费
overhead charge 管理费，杂项开支
overtime pay加班费
overtonging上扣过紧
old well plugged back老井封堵
old well sidetracked老井侧钻
old well worked over老井大修
