DSDP Leg 69, Hole 504A - 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.测井数据为井眼周围地层的物理性质测量值，采集于取心作业完成后（电缆测井（wireline logging））或钻井作业过程中（随钻测井（Logging-While-Drilling, LWD））。任意一口井所采集的数据类型（涵盖电阻率、伽马辐射、声波速度、密度、井眼成像测井等），取决于该井的科学目标与作业约束条件。