三维声波测井仪器探索研究

Study on three-dimensional acoustic logging tool

地层特性通常有很强的方位性,因此,必须进行三维测量才能提供完整的描述。三维声波,能提供轴向、周向、径向三个方向上的测井数据。轴向、周向的探测分辨率进一步提高,能更精细地描述近井眼地层信息;径向探测深度的提高,能更好地获取原状地层信息,在能为取心、射孔提供更准确依据的同时,还能有效地判断出地层断面及裂缝发育走向,并且也为声波过套管测井提供了可行性依据。

Formation characteristics usually have a strong directionality. In order to provide a complete description, it is necessary to carry out the three-dimensional measurement.The three-dimensional acoustic technology can provide axial, circumferential and radial direction logging data. The further improved detection resolution of axial and circumferential direction is, the more finely described the near-wellbore formation information will be. With radial detecting depth improved, it can access to virgin formation information better, and it can determine the formation cross-section and the fracture strike when it can provide a more accurate basis for coring, perforating, even it can provide a feasible basis for acoustic through casing logging.