IODP Expedition 338, Hole C0018B - Well Logging Data

Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, gamma radiation, velocity, density, borehole images,…) in any hole depends on the scientific objectives and operational constraints.测井数据是对井眼周围地层物理性质的原位实测数据，采集时机包括取心作业完成后（电缆测井（wireline logging））或钻井过程中（随钻测井（Logging-While-Drilling，LWD））。任一井眼所采集的数据类型（包括电阻率（resistivity）、伽马辐射（gamma radiation）、声波速度（velocity）、密度（density）、井壁成像（borehole images）等），均取决于其科学目标与作业约束条件。