常用测井曲线名称

常用测井曲线名称 测井符号 英文名称 中文名称Rt true formation resistivity. 地层真电阻率 Rxo flushed zone formation resistivity 冲洗带地层电阻率 Ild deep investigate induction log深探测感应测井 Ilm medium investigate induction log中探测感应测井 Ils shallow investigate induction log 浅探测感应测井 Rd deep investigate double lateral resistivity log 深双侧向电阻率测井 Rs shallow investigate double 浅双侧向电阻率测井 lateral resistivity log RMLL micro lateral resistivity log 微侧向电阻率测井 CON induction log 感应测井 AC acoustic 声波时差 DEN density 密度 CN neutron 中子 GR natural gamma ray 自然伽马 SP spontaneous potential 自然电位 CAL borehole diameter 井径 K potassium 钾 TH thorium 钍 U uranium 铀 KTH gamma ray without uranium 无铀伽马 NGR neutron gamma ray 中子伽马常用测井曲线名称A1R1 T1R1声波幅度A1R2 T1R2声波幅度A2R1 T2R1声波幅度A2R2 T2R2声波幅度AAC 声波附加值AAVG 第一扇区平均值AC 声波时差AF10 阵列感应电阻率AF20 阵列感应电阻率AF30 阵列感应电阻率AF60 阵列感应电阻率AF90 阵列感应电阻率AFRT 阵列感应电阻率AFRX 阵列感应电阻率AIMP 声阻抗AIPD 密度孔隙度AIPN 中子孔隙度AMAV 声幅AMAX 最大声幅AMIN 最小声幅AMP1 第一扇区的声幅值AMP2 第二扇区的声幅值AMP3 第三扇区的声幅值AMP4 第四扇区的声幅值AMP5 第五扇区的声幅值AMP6 第六扇区的声幅值AMVG 平均声幅AO10 阵列感应电阻率AO20 阵列感应电阻率AO30 阵列感应电阻率AO60 阵列感应电阻率AO90 阵列感应电阻率AOFF 截止值AORT 阵列感应电阻率AORX 阵列感应电阻率APLC 补偿中子AR10 方位电阻率AR11 方位电阻率AR12 方位电阻率ARO1 方位电阻率ARO2 方位电阻率ARO3 方位电阻率ARO4 方位电阻率ARO5 方位电阻率ARO6 方位电阻率ARO7 方位电阻率ARO8 方位电阻率ARO9 方位电阻率AT10 阵列感应电阻率AT20 阵列感应电阻率AT30 阵列感应电阻率AT60 阵列感应电阻率AT90 阵列感应电阻率ATAV 平均衰减率ATC1 声波衰减率ATC2 声波衰减率ATC3 声波衰减率ATC4 声波衰减率ATC5 声波衰减率ATC6 声波衰减率ATMN 最小衰减率ATRT 阵列感应电阻率ATRX 阵列感应电阻率AZ 1号极板方位AZ1 1号极板方位AZI 1号极板方位AZIM 井斜方位BGF 远探头背景计数率BGN 近探头背景计数率BHTA 声波传播时间数据BHTT 声波幅度数据BLKC 块数BS 钻头直径BTNS 极板原始数据C1 井径C2 井径C3 井径CAL 井径CAL1 井径CAL2 井径CALI 井径CALS 井径CASI 钙硅比CBL 声波幅度CCL 磁性定位CEMC 水泥图CGR 自然伽马CI 总能谱比CMFF 核磁共振自由流体体积CMRP 核磁共振有效孔隙度CN 补偿中子CNL 补偿中子CO 碳氧比CON1 感应电导率COND 感应电导率CORR 密度校正值D2EC 200兆赫兹介电常数D4EC 47兆赫兹介电常数DAZ 井斜方位DCNT 数据计数DEN 补偿密度DEN_1 岩性密度DEPTH 测量深度DEV 井斜DEVI 井斜DFL 数字聚焦电阻率DIA1 井径DIA2 井径DIA3 井径DIFF 核磁差谱DIP1 地层倾角微电导率曲线1DIP1_1 极板倾角曲线DIP2 地层倾角微电导率曲线2DIP2_1 极板倾角曲线DIP3 地层倾角微电导率曲线3DIP3_1 极板倾角曲线DIP4 地层倾角微电导率曲线4DIP4_1 极板倾角曲线DIP5 极板倾角曲线DIP6 极板倾角曲线DRH 密度校正值DRHO 密度校正值DT 声波时差DT1 下偶极横波时差DT2 上偶极横波时差DT4P 纵横波方式单极纵波时差DT4S 纵横波方式单极横波时差DTL 声波时差DTST 斯通利波时差ECHO 回波串ECHOQM 回波串ETIMD 时间FAMP 泥浆幅度FAR 远探头地层计数率FCC 地层校正FDBI 泥浆探测器增益FDEN 流体密度FGAT 泥浆探测器门限FLOW 流量FPLC 补偿中子FTIM 泥浆传播时间GAZF Z轴加速度数据GG01 屏蔽增益GG02 屏蔽增益GG03 屏蔽增益GG04 屏蔽增益GG05 屏蔽增益GG06 屏蔽增益GR 自然伽马GR2 同位素示踪伽马HAZI 井斜方位HDRS 深感应电阻率HFK 钾HMRS 中感应电阻率HSGR 无铀伽马HTHO 钍HUD 持水率HURA 铀IDPH 深感应电阻率IMPH 中感应电阻率K 钾KCMR 核磁共振渗透率KTH 无铀伽马LCAL 井径LDL 岩性密度LLD 深侧向电阻率LLD3 深三侧向电阻率LLD7 深七侧向电阻率LLHR 高分辨率侧向电阻率LLS 浅侧向电阻率LLS3 浅三侧向电阻率LLS7 浅七侧向电阻率M1R10 高分辨率阵列感应电阻率M1R120 高分辨率阵列感应电阻率M1R20 高分辨率阵列感应电阻率M1R30 高分辨率阵列感应电阻率M1R60 高分辨率阵列感应电阻率M1R90 高分辨率阵列感应电阻率M2R10 高分辨率阵列感应电阻率M2R120 高分辨率阵列感应电阻率M2R20 高分辨率阵列感应电阻率M2R30 高分辨率阵列感应电阻率M2R60 高分辨率阵列感应电阻率M2R90 高分辨率阵列感应电阻率M4R10 高分辨率阵列感应电阻率M4R120 高分辨率阵列感应电阻率M4R20 高分辨率阵列感应电阻率M4R30 高分辨率阵列感应电阻率M4R60 高分辨率阵列感应电阻率M4R90 高分辨率阵列感应电阻率MBVI 核磁共振束缚流体体积MBVM 核磁共振自由流体体积MCBW 核磁共振粘土束缚水ML1 微电位电阻率ML2 微梯度电阻率MPHE 核磁共振有效孔隙度MPHS 核磁共振总孔隙度MPRM 核磁共振渗透率MSFL 微球型聚焦电阻率NCNT 磁北极计数NEAR 近探头地层计数率NGR 中子伽马NPHI 补偿中子P01 第1组分孔隙度P02 第2组分孔隙度P03 第3组分孔隙度P04 第4组分孔隙度P05 第5组分孔隙度P06 第6组分孔隙度P07 第7组分孔隙度P08 第8组分孔隙度P09 第9组分孔隙度P10 第10组分孔隙度P11 第11组分孔隙度P12 第12组分孔隙度P1AZ 1号极板方位P1AZ_1 2号极板方位P1BTN 极板原始数据P2BTN 极板原始数据P2HS 200兆赫兹相位角P3BTN 极板原始数据P4BTN 极板原始数据P4HS 47兆赫兹相位角P5BTN 极板原始数据P6BTN 极板原始数据PAD1 1号极板电阻率曲线PAD2 2号极板电阻率曲线PAD3 3号极板电阻率曲线PAD4 4号极板电阻率曲线PAD5 5号极板电阻率曲线PAD6 6号极板电阻率曲线PADG 极板增益PD6G 屏蔽电压PE 光电吸收截面指数PEF 光电吸收截面指数PEFL 光电吸收截面指数PERM-IND 核磁共振渗透率POTA 钾PPOR 核磁T2谱PPORB 核磁T2谱PPORC 核磁T2谱PR 泊松比PRESSURE 压力QA 加速计质量QB 磁力计质量QRTT 反射波采集质量R04 0.4米电位电阻率R045 0.45米电位电阻率R05 0.5米电位电阻率R1 1米底部梯度电阻率R25 2.5米底部梯度电阻率R4 4米底部梯度电阻率R4AT 200兆赫兹幅度比R4AT_1 47兆赫兹幅度比R4SL 200兆赫兹电阻率R4SL_1 47兆赫兹电阻率R6 6米底部梯度电阻率R8 8米底部梯度电阻率RAD1 井径（极板半径）RAD2 井径（极板半径）RAD3 井径（极板半径）RAD4 井径（极板半径）RAD5 井径（极板半径）RAD6 井径（极板半径）RADS 井径（极板半径）RATI 地层比值RB 相对方位RB_1 相对方位角RBOF 相对方位RD 深侧向电阻率RFOC 八侧向电阻率RHOB 岩性密度RHOM 岩性密度RILD 深感应电阻率RILM 中感应电阻率RLML 微梯度电阻率RM 钻井液电阻率RMLL 微侧向电阻率RMSF 微球型聚焦电阻率RNML 微电位电阻率ROT 相对方位RPRX 邻近侧向电阻率RS 浅侧向电阻率SDBI 特征值增益SFL 球型聚焦电阻率SFLU 球型聚焦电阻率SGAT 采样时间SGR 无铀伽马SICA 硅钙比SIG 井周成像特征值SIGC 俘获截面SIGC2 示踪俘获截面SMOD 横波模量SNL 井壁中子SNUM 特征值数量SP 自然电位SPER 特征值周期T2 核磁T2谱T2-BIN-A 核磁共振区间孔隙度T2-BIN-B 核磁共振区间孔隙度T2-BIN-PR 核磁共振区间孔隙度T2GM T2分布对数平均值T2LM T2分布对数平均值TEMP 井温TH 钍THOR 钍TKRA 钍钾比TPOR 核磁共振总孔隙度TRIG 模式标志TS 横波时差TT1 上发射上接受的传播时间TT2 上发射下接受的传播时间TT3 下发射上接受的传播时间TT4 下发射下接受的传播时间TURA 钍铀比U 铀UKRA 铀钾比URAN 铀VAMP 扇区水泥图VDL 声波变密度VMVM 核磁共振自由流体体积VPVS 纵横波速度比WAV1 第一扇区的波列WAV2 第二扇区的波列WAV3 第三扇区的波列WAV4 第四扇区的波列WAV5 第五扇区的波列WAV6 第六扇区的波列WAVE 变密度图WF 全波列波形ZCORR 密度校正值斯仑贝谢所有测井曲线英文名称解释 OCEAN DRILLING PROGRAM ACRONYMS USED FOR WIRELINE SCHLUMBERGER TOOLS ACT Aluminum Clay Tool AMS Auxiliary Measurement Sonde APS Accelerator Porosity Sonde ARI Azimuthal Resistivity Imager ASI Array Sonic Imager BGKT Vertical Seismic Profile Tool BHC Borehole Compensated Sonic Tool BHTV Borehole Televiewer CBL Casing Bond Log CNT Compensated Neutron Tool DIT Dual Induction Tool DLL Dual Laterolog DSI Dipole Sonic Imager FMS Formation MicroScanner GHMT Geologic High Resolution Magnetic Tool GPIT General Purpose Inclinometer Tool GR Natural Gamma Ray GST Induced Gamma Ray Spectrometry Tool HLDS Hostile Environment Lithodensity Sonde HLDT Hostile Environment Lithodensity Tool HNGS Hostile Environment Gamma Ray Sonde LDT Lithodensity Tool LSS Long Spacing Sonic Tool MCD Mechanical Caliper Device NGT Natural Gamma Ray Spectrometry Tool NMRT Nuclear Resonance Magnetic Tool QSST Inline Checkshot Tool SDT Digital Sonic Tool SGT Scintillation Gamma Ray Tool SUMT Susceptibility Magnetic Tool UBI Ultrasonic Borehole Imager VSI Vertical Seismic Imager WST Well Seismic Tool WST-3 3-Components Well Seismic Tool OCEAN DRILLING PROGRAM ACRONYMS USED FOR LWD SCHLUMBERGER TOOLS ADN Azimuthal Density-Neutron CDN Compensated Density-Neutron CDR Compensated Dual Resistivity ISONIC Ideal Sonic-While-Drilling NMR Nuclear Magnetic Resonance RAB Resistivity-at-the-Bit OCEAN DRILLING PROGRAM ACRONYMS USED FOR NON-SCHLUMBERGER SPECIALTY TOOLS MCS Multichannel Sonic Tool MGT Multisensor Gamma Tool SST Shear Sonic Tool TAP Temperature-Acceleration-Pressure Tool TLT Temperature Logging Tool OCEAN DRILLING PROGRAM ACRONYMS AND UNITS USED FOR WIRELINE SCHLUMBERGER LOGS AFEC APS Far Detector Counts (cps) ANEC APS Near Detector Counts (cps) AX Acceleration X Axis (ft/s2) AY Acceleration Y Axis (ft/s2) AZ Acceleration Z Axis (ft/s2) AZIM Constant Azimuth for Deviation Correction (deg) APLC APS Near/Array Limestone Porosity Corrected (%) C1 FMS Caliper 1 (in) C2 FMS Caliper 2 (in) CALI Caliper (in) CFEC Corrected Far Epithermal Counts (cps) CFTC Corrected Far Thermal Counts (cps) CGR Computed (Th+K) Gamma Ray (API units) CHR2 Peak Coherence, Receiver Array, Upper Dipole CHRP Compressional Peak Coherence, Receiver Array, P&S CHRS Shear Peak Coherence, Receiver Array, P&S CHTP Compressional Peak Coherence, Transmitter Array, P&S CHTS Shear Peak Coherence, Transmitter Array, P&S CNEC Corrected Near Epithermal Counts (cps) CNTC Corrected Near Thermal Counts (cps) CS Cable Speed (m/hr) CVEL Compressional Velocity (km/s) DATN Discriminated Attenuation (db/m) DBI Discriminated Bond Index DEVI Hole Deviation (degrees) DF Drilling Force (lbf) DIFF Difference Between MEAN and MEDIAN in Delta-Time Proc. (microsec/ft) DRH HLDS Bulk Density Correction (g/cm3) DRHO Bulk Density Correction (g/cm3) DT Short Spacing Delta-Time (10-8 spacing; microsec/ft) DT1 Delta-Time Shear, Lower Dipole (microsec/ft) DT2 Delta-Time Shear, Upper Dipole (microsec/ft) DT4P Delta- Time Compressional, P&S (microsec/ft) DT4S Delta- Time Shear, P&S (microsec/ft) DT1R Delta- Time Shear, Receiver Array, Lower Dipole (microsec/ft) DT2R Delta- Time Shear, Receiver Array, Upper Dipole (microsec/ft) DT1T Delta-Time Shear, Transmitter Array, Lower Dipole (microsec/ft) DT2T Delta-Time Shear, Transmitter Array, Upper Dipole (microsec/ft) DTCO Delta- Time Compressional (microsec/ft) DTL Long Spacing Delta-Time (12-10 spacing; microsec/ft) DTLF Long Spacing Delta-Time (12-10 spacing; microsec/ft) DTLN Short Spacing Delta-Time (10-8 spacing; microsec/ft DTRP Delta-Time Compressional, Receiver Array, P&S (microsec/ft) DTRS Delta-Time Shear, Receiver Array, P&S (microsec/ft) DTSM Delta-Time Shear (microsec/ft) DTST Delta-Time Stoneley (microsec/ft) DTTP Delta-Time Compressional, Transmitter Array, P&S (microsec/ft) DTTS Delta-Time Shear, Transmitter Array, P&S (microsec/ft) ECGR Environmentally Corrected Gamma Ray (API units) EHGR Environmentally Corrected High Resolution Gamma Ray (API units) ENPH Epithermal Neutron Porosity (%) ENRA Epithermal Neutron Ratio ETIM Elapsed Time (sec) FINC Magnetic Field Inclination (degrees) FNOR Magnetic Field Total Moment (oersted) FX Magnetic Field on X Axis (oersted) FY Magnetic Field on Y Axis (oersted) FZ Magnetic Field on Z Axis (oersted) GR Natural Gamma Ray (API units) HALC High Res. Near/Array Limestone Porosity Corrected (%) HAZI Hole Azimuth (degrees) HBDC High Res. Bulk Density Correction (g/cm3) HBHK HNGS Borehole Potassium (%) HCFT High Resolution Corrected Far Thermal Counts (cps) HCGR HNGS Computed Gamma Ray (API units) HCNT High Resolution Corrected Near Thermal Counts (cps) HDEB High Res. Enhanced Bulk Density (g/cm3) HDRH High Resolution Density Correction (g/cm3) HFEC High Res. Far Detector Counts (cps) HFK HNGS Formation Potassium (%) HFLC High Res. Near/Far Limestone Porosity Corrected (%) HEGR Environmentally Corrected High Resolution Natural Gamma Ray (API units) HGR High Resolution Natural Gamma Ray (API units) HLCA High Res. Caliper (in HLEF High Res. Long-spaced Photoelectric Effect (barns/e-) HNEC High Res. Near Detector Counts (cps) HNPO High Resolution Enhanced Thermal Nutron Porosity (%) HNRH High Resolution Bulk Density (g/cm3) HPEF High Resolution Photoelectric Effect (barns/e-) HRHO High Resolution Bulk Density (g/cm3) HROM High Res. Corrected Bulk Density (g/cm3) HSGR HNGS Standard (total) Gamma Ray (API units) HSIG High Res. Formation Capture Cross Section (capture units) HSTO High Res. Computed Standoff (in) HTHO HNGS Thorium (ppm) HTNP High Resolution Thermal Neutron Porosity (%) HURA HNGS Uranium (ppm) IDPH Phasor Deep Induction (ohmm) IIR Iron Indicator Ratio CFE/(CCA+CSI) ILD Deep Resistivity (ohmm) ILM Medium Resistivity (ohmm) IMPH Phasor Medium Induction (ohmm) ITT Integrated Transit Time (s) LCAL HLDS Caliper (in) LIR Lithology Indicator Ratio CSI/(CCA+CSI) LLD Laterolog Deep (ohmm) LLS Laterolog Shallow (ohmm) LTT1 Transit Time (10; microsec) LTT2 Transit Time (8; microsec) LTT3 Transit Time (12; microsec) LTT4 Transit Time (10; microsec) MAGB Earths Magnetic Field (nTes) MAGC Earth Conductivity (ppm) MAGS Magnetic Susceptibility (ppm) MEDIAN Median Delta-T Recomputed (microsec/ft) MEAN Mean Delta-T Recomputed (microsec/ft) NATN Near Pseudo-Attenuation (db/m) NMST Magnetometer Temperature (degC) NMSV Magnetometer Signal Level (V) NPHI Neutron Porosity (%) NRHB LDS Bulk Density (g/cm3) P1AZ Pad 1 Azimuth (degrees) PEF Photoelectric Effect (barns/e-) PEFL LDS Long-spaced Photoelectric Effect (barns/e-) PIR Porosity Indicator Ratio CHY/(CCA+CSI) POTA Potassium (%) RB Pad 1 Relative Bearing (degrees) RHL LDS Long-spaced Bulk Density (g/cm3) RHOB Bulk Density (g/cm3) RHOM HLDS Corrected Bulk Density (g/cm3) RMGS Low Resolution Susceptibility (ppm) SFLU Spherically Focused Log (ohmm) SGR Total Gamma Ray (API units) SIGF APS Formation Capture Cross Section (capture units) SP Spontaneous Potential (mV) STOF APS Computed Standoff (in) SURT Receiver Coil Temperature (degC) SVEL Shear Velocity (km/s) SXRT NMRS differential Temperature (degC) TENS Tension (lb) THOR Thorium (ppm) TNRA Thermal Neutron Ratio TT1 Transit Time (10 spacing; microsec) TT2 Transit Time (8 spacing; microsec) TT3 Transit Time (12 spacing; microsec) TT4 Transit Time (10 spacing; microsec) URAN Uranium (ppm) V4P Compressional Velocity, from DT4P (P&S; km/s) V4S Shear Velocity, from DT4S (P&S; km/s) VELP Compressional Velocity (processed from waveforms; km/s) VELS Shear Velocity (processed from waveforms; km/s) VP1 Compressional Velocity, from DT, DTLN, or MEAN (km/s) VP2 Compressional Velocity, from DTL, DTLF, or MEDIAN (km/s) VCO Compressional Velocity, from DTCO (km/s) VS Shear Velocity, from DTSM (km/s) VST Stonely Velocity, from DTST km/s) VS1 Shear Velocity, from DT1 (Lower Dipole; km/s) VS2 Shear Velocity, from DT2 (Upper Dipole; km/s) VRP Compressional Velocity, from DTRP (Receiver Array, P&S; km/s) VRS Shear Velocity, from DTRS (Receiver Array, P&S; km/s) VS1R Shear Velocity, from DT1R (Receiver Array, Lower Dipole; km/s) VS2R Shear Velocity, from DT2R (Receiver Array, Upper Dipole; km/s) VS1T Shear Velocity, from DT1T (Transmitter Array, Lower Dipole; km/s) VS2T Shear Velocity, from DT2T (Transmitter Array, Upper Dipole; km/s) VTP Compressional Velocity, from DTTP (Transmitter Array, P&S; km/s) VTS Shear Velocity, from DTTS (Transmitter Array, P&S; km/s) #POINTS Number of Transmitter-Receiver Pairs Used in Sonic Processing W1NG NGT Window 1 counts (cps) W2NG NGT Window 2 counts (cps) W3NG NGT Window 3 counts (cps) W4NG NGT Window 4 counts (cps) W5NG NGT Window 5 counts (cps) OCEAN DRILLING PROGRAM ACRONYMS AND UNITS USED FOR LWD SCHLUMBERGER LOGS AT1F Attenuation Resistivity (1 ft resolution; ohmm) AT2F Attenuation Resistivity (2 ft resolution; ohmm) AT3F Attenuation Resistivity (3 ft resolution; ohmm) AT4F Attenuation Resistivity (4 ft resolution; ohmm) AT5F Attenuation Resistivity (5 ft resolution; ohmm) ATR Attenuation Resistivity (deep; ohmm) BFV Bound Fluid Volume (%) B1TM RAB Shallow Resistivity Time after Bit (s) B2TM RAB Medium Resistivity Time after Bit (s) B3TM RAB Deep Resistivity Time after Bit (s) BDAV Deep Resistivity Average (ohmm) BMAV Medium Resistivity Average (ohmm) BSAV Shallow Resistivity Average (ohmm) CGR Computed (Th+K) Gamma Ray (API units) DCAL Differential Caliper (in) DROR Correction for CDN rotational density (g/cm3). DRRT Correction for ADN rotational density (g/cm3). DTAB AND or CDN Density Time after Bit (hr) FFV Free Fluid Volume (%) GR Gamma Ray (API Units) GR7 Sum Gamma Ray Windows GRW7+GRW8+GRW9-Equivalent to Wireline NGT window 5 (cps) GRW3 Gamma Ray Window 3 counts (cps)-Equivalent to Wireline NGT window 1 GRW4 Gamma Ray Window 4 counts (cps)-Equivalent to Wireline NGT window 2 GRW5 Gamma Ray Window 5 counts (cps)-Equivalent to Wireline NGT window 3 GRW6 Gamma Ray Window 6 counts (cps)-Equivalent to Wireline NGT window 4 GRW7 Gamma Ray Window 7 counts (cps) GRW8 Gamma Ray Window 8 counts (cps) GRW9 Gamma Ray Window 9 counts (cps) GTIM CDR Gamma Ray Time after Bit (s) GRTK RAB Gamma Ray Time after Bit (s) HEF1 Far He Bank 1 counts (cps) HEF2 Far He Bank 2 counts (cps) HEF3 Far He Bank 3 counts (cps) HEF4 Far He Bank 4 counts (cps) HEN1 Near He Bank 1 counts (cps) HEN2 Near He Bank 2 counts (cps) HEN3 Near He Bank 3 counts (cps) HEN4 Near He Bank 4 counts (cps) MRP Magnetic Resonance Porosity NTAB ADN or CDN Neutron Time after Bit (hr) PEF Photoelectric Effect (barns/e-) POTA Potassium (%) ROPE Rate of Penetration (ft/hr) PS1F Phase Shift Resistivity (1 ft resolution; ohmm) PS2F Phase Shift Resistivity (2 ft resolution; ohmm) PS3F Phase Shift Resistivity (3 ft resolution; ohmm) PS4F Phase Shift Resistivity (4 ft resolution; ohmm) PS5F Phase Shift Resistivity (5 ft resolution; ohmm) PSR Phase Shift Resistivity (shallow; ohmm) RBIT Bit Resistivity (ohmm) RBTM RAB Resistivity Time After Bit (s) RING Ring Resistivity (ohmm) ROMT Max. Density Total (g/cm3) from rotational processing ROP Rate of Penetration (m/hr) ROP1 Rate of Penetration, average over last 1 ft (m/hr). ROP5 Rate of Penetration, average over last 5 ft (m/hr) ROPE Rate of Penetration, averaged over last 5 ft (ft/hr) RPM RAB Tool Rotation Speed (rpm) RTIM CDR or RAB Resistivity Time after Bit (hr) SGR Total Gamma Ray (API units) T2 T2 Distribution (%) T2LM T2 Logarithmic Mean (ms) THOR Thorium (ppm) TNPH Thermal Neutron Porosity (%) TNRA Thermal Ratio URAN Uranium (ppm) OCEAN DRILLING PROGRAM ADDITIONAL ACRONYMS A