ODP Leg 174A, Hole 1071G - 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（Logging data）是对井眼周围地层物理性质的原位测量，采集方式分为两类：取芯作业完成后开展的电缆测井（wireline logging），以及钻进过程中进行的随钻测井（Logging-While-Drilling, LWD）。单井可采集的测井数据类型涵盖电阻率（resistivity）、伽马辐射（gamma radiation）、声波速度（velocity）、密度（density）、井眼成像测井（borehole images）等，数据的具体覆盖范围取决于科学目标与现场作业约束条件。