letter of advice通知单
letter of authoyity授权书
lab house值班房
labour contract劳务合同
labour cost劳务费用
labour distribution chart工人出勤表
labour insurance劳动保险
ladder belt安全带
landing depth下入深度
landing nipple定位短节，提升短节
landing string下井管柱
land operation陆上作业
large producer高产井
laser-beam plotter激光绘图仪
laser printer激光打印机
last casing完井套管
lateral侧面的
lateral axis横坐标
lateral core 井壁取心
lateral drilling 水平钻井，侧向钻井
lateral segment水平井段
lateral well水平井，侧钻井
laterolog侧向测井
lead pig铅罐
lay tongs管钳
lost circulation洗井液漏失，井漏
LDL（litho-density log） leakage漏失
leak detection检漏，查漏
lease rent租赁费
lease term租赁期
leasing of equipment设备出租
legal person法人
legal personality法人资格
legitimate right合法权利
length overall总长
less permeable layer低渗透层
less waxy crude低含蜡原油
letter of guarantee担保书
letter of intent意向书
letter of introduction介绍信
level 1 maintenance一级维修保养
limestone石灰岩
liability责任，义务，债务
liability for breach of contract违约责任
liability of damage损坏赔偿责任
license许可证，执照
lift sub（nipple）提升短节
limitation of liability责任范围
liquid nitrogen液氮
lined-cavity charge聚能射孔弹
line the hole下套管
liquid damping液压减震器
liquid level test液面测试
liquefied petroleum gas液化石油气
lithic fragment 岩屑
lithologic hydrocarbon reservoir岩性油气藏
laterolog deep深侧向测井
laterolog shallow浅侧向测井
LDL（litho-density log）岩性密度测井
litho-porosity log岩性孔隙度测井
little slam小满贯测井法
LSS（long-spaced sonic log）长源距声波测井
log measured from测井起始深度
log测井，测井仪，测井曲线，录井
logging cabin测井房，录井房
logging cable测井电缆
logging gauge测井仪
logging interval测井井段
logging-while-drilling tool随钻测井仪
logging interpretation测井解释
long horizontal traverse well，high-angle deviated well大斜度井
look for bottom探井底
loosen a connection松扣
loss泥浆漏失，井漏
loss of gauge不合标准，不合规格
loss of well control井失控
lost item（井底）落物
lower sheave地滑轮
low-permeability低渗透率
low productivity well低产井
low-water-cut well低含水井
letter report书面报告
lump sum contract总包合同
lump sum fee 一揽子费用
lump work包干作业
logging while drilling随钻测井
multi-arm caliper多臂井径仪
magnifier放大器
maiden field未开发的油气田
main layer主力油层
main office总公司
main producing horizon主力生产层
maintenance center维修基地
maintenance cost维修费用
maintenance crew维修队
maintenance gang维修班
maintenance man维修工
maintenance manual维修手册
maintenance overhaul日常维修
maintenance report维修保养记录
maintenance supply维修器材
major overhaul 大修
major reservoir主力油层
major terms常用术语
make a pull起钻
make a trip起下钻
male thread公扣
malfunction故障，性能不良
maloperation无操作
male and female joint公母扣接头
man –made fracture人造裂缝
man-made recovery人工开采
manual of operations操作手册
magnetic mark磁记号
maximum allowable operating pressure最大允许工作压力
marginal field边缘油田
marginal flood边缘注水
marine drilling platform海上钻井平台
marine operation海上作业
marine petroleum exploitation海上石油开采
master map原始资料图
master plan总体规划
maturing field老油田
maximum deviation最大井斜
maximum design pressure最高设计压力
maximum flow（rate）最大流量
maximum penetration最大穿透深度
maximum wellhead pressure最高井口压力
mudstone泥岩
measurement depth实测井深
measured error测量误差
measured signal被测信号
measured value实测值
measurement precision测量精度
measurement range 测量范围
measurement well测试井
MWD（measurements while drilling）随钻测井
microlog微电极测井
MSFL（microspherically focused log）微球形聚焦测井
mechanical fault（failure）机械故障
mechanical performance机械性能
mechanical work机械作业
memorandum备忘录
microlaterolog微侧向测井
micro-resistivity log微电阻率测井
ministerial standard部颁标准
moving in pulling unit起油管作业机运进井场
moving in rig钻机运进井场
miscalibration标定错误
miscible phase混相
misfire未引爆，未发射
mishap意外事故，机械事故
misinterpretation解释错误
moving in service rig修井机运进井场
moving in tools仪器设备运进井场
magnetic mark depth磁记号深度
money order汇票
MOA（memorandum of agreement）协议备忘录
mobile drilling rig车载钻机
mobile house 活动房
mobile operation流动作业
mobilization and demobilization fees动复员费
mobilization charge动员费
model contract标准合同
model machine样机
model number型号
moving out equipment设备运出井场
modern perforating practice现代射孔技术
monitor well监测井
monkey活动扳手，井架工
monocable，monoconductor，monoconductor cable，monoconductor line单芯电缆
monkey wrench管钳，活动扳手
monophase单相
monthly report月报
morning shift早班
mothballed plant封存装置
movable pulley动滑轮
maintenance prevention安全设施
master repair schedule大修日程安排
margin of safety安全系数
material specifications材料规格
maximum surface pressure最高井口压力
minimum shooting interval最小射孔井段
mud cake泥饼
mud damage泥浆对地层的损害
mud filtrate泥浆滤液
mud fluid泥浆
mud logging泥浆录井
mud lubrication泥浆压井
mud pit泥浆池
mud socket捞砂筒
mud resistivity log 泥浆电阻率测井
mudstone泥岩
multi-cable，multi conductor ，multicore cable多芯电缆
multimeter万用电表
multiple completion多层完井
multiple fracturing多次压裂
multiple runs多次起下作业
multizone –flooding多层注水
multizone reservoir多层油气藏
multi-finger caliper多臂井径仪
XMAC（multipole array acoustic log）数字交叉偶极子阵列声波
