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常规双侧向测井仪无法精确地划分薄油气储层，在钻井泥浆侵入深度时无法测量地层真实电阻率，测并解释应用曲线对比技术或近似模拟技术，常导致复杂油藏和薄层状地层发生低质油气储量和漏失生产层段。而美国Atlas公司研制的高分辨率侧向测井仪（HDLL）采取由1个电流发射电极和18个测量电极组成，并通过测量标准电压，由第一、第二压差来得到发射电压和电流，同时产生标准侧向曲线阵列和一组合成电阻车曲线。测井解释方面HDLL仪器应用测量数据反演技术和地球物理模拟技术，在地层各参数的置信系数可达到95％，即地层参数有95％的可靠性。HDLL仪器比常规双侧向测井仪器更能精确地评估地层电阻率、含水饱和度和油气储量，能给出钻井泥浆侵入剖面，能改进薄层油气藏的评估。
Conventional bilateral tools can not accurately divide thin reservoirs and can not measure the true resistivity of the formation when drilling mud intrudes, measuring and interpreting the use of curve contrast techniques or near-analog techniques often result in complex reservoirs and thin layers Formation of low-quality oil and gas reserves and loss of productive intervals. The high-resolution lateral logging tool (HDLL) developed by Atlas in the United States adopts a current transmitting electrode and 18 measuring electrodes, and by measuring the standard voltage, the first and second voltage differences are used to obtain the emission voltage and Current while producing a standard lateral curvilinear array and a set of combined resistance car curves. Logging interpretation HDLL instrument application of measurement data inversion techniques and geophysical simulation techniques, the confidence coefficient of each parameter in the formation can reach 95%, namely the formation parameters have 95% reliability. The HDLL instrument provides a more accurate assessment of formation resistivity, water saturation, and hydrocarbon reserves than conventional dual-lateral logging tools, giving insight into drilling mud invasion profiles and improving thin-layer reservoir evaluation.