ODP Leg 135, Hole 838B - 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属性的原位测量结果，其采集场景分为取芯作业完成后（电缆测井，wireline logging）以及钻井作业过程中（随钻测井，Logging-While-Drilling，LWD）。单口井的测井数据覆盖范围（涵盖电阻率、伽马辐射、声波速度、密度、井壁成像等）取决于该井的科学目标与作业约束条件。