威德福公司推出了一种直径为21/4in的小井眼交叉偶极子声波测井仪(Compact Cross-Dipole SonicTool,CXD)。该仪器是威德福公司小井眼仪器串的一个组件,其长度为26 ft,可以作为四组合小井眼仪器串的一个成员下井作业。仪器包括4个部分。第1部分包括3个发射器,1个单极子和在X轴和Y轴上产生接近地层横波速度的弯曲波的2个定向高输出、宽频带的偶极子。第2部分是隔声体。声波隔声体用于衰减沿着仪器体在发射与接收间传播的直达波的能量。这些隔声体的开发采用了基于“簧上质量原理”的新 Weatherford introduced a 21 / 4in Compact Cross-Dipole SonicTool (CXD). The instrument, a component of a Weirtelf Slimline instrument string, has a length of 26 ft and can be used as a member of a four-in-one slimline string to go down well. The instrument consists of 4 sections. Part 1 consists of 3 emitters, 1 monopole, and 2 directional high-output, broadband dipoles that generate bending waves in the X-axis and Y-axis that are close to the shear wave velocity of the formation. The second part is sound insulation body. Acoustic insulation is used to attenuate the energy of direct waves that propagate along the instrument body between transmission and reception. These sound insulation bodies were developed using a new “based on the sprung mass principle.”