应用圆柱螺线法计算邻井法面距离

摘要

计算邻井法面距离时需要明确井眼轨迹的形状，目前对井眼轨迹形状的假设模型有很多，其中圆柱螺线模型在定向井井眼轨迹测斜计算中有广泛的应用，假设井段曲线类型为圆柱螺线，推导参考井井眼轨迹与比较井井眼轨迹法面距离的计算公式，并给出了公式计算步骤和适用条件，与最小曲率假设条件下的法面距离进行比较，结果相近，验证了公式的准确性。使用给出的计算公式可以进行简化的扫描计算，提高计算速度，并可以用于井眼轨迹监控和井间防碰计算。%Calculating the normal surface distance need to make sure of the shape of the well track. Among many hypothetical mod⁃els at present, the cylinder helix model is widely applied in the deviational survey calculation of directional well track. Assuming the well section curve type was cylinder helix curve, under this assumption, this paper derived the computing formula used to calcu⁃late the normal surface distance between the comparison well and the reference well and provided the calculation procedure and the applicable condition. Compared with the normal surface under the assumption of the minimum curvature, the results are similar to proof the accuracy of the formula. Using the proposed computational method can simplify the calculation, improve computing speed and be used in the well trajectory monitoring and well anti-collision calculation.