最新的造斜曲线设计提供给操作人员一种无需要换井底钻具组合,又能在规定偏差内击中水平靶区的有效设计方法。它是以埃尔夫·阿奎坦最初提出的正切造斜曲线为基础提出来的。按照简单的正切设计法(见图1),造斜曲线由两个造斜段和造斜段中间一斜直段组成。根据设计使用的造斜马达的性能,采用最小的曲率半径和较短的斜直段,以便使定向操作者精确地钻达第二造斜段的起始造斜点。在第二造斜段,采用在第一造斜段使用的同一造斜马达,这样操作者可以根据马达在第一造斜段的工作状况,确定第二造斜点的深度。最新的造斜曲线设计,称之为复式正切造斜曲线(见图2),采用与简单正切法相同的 The latest draft curve design provides the operator with an effective method of design that does not require a bottomhole assembly to be struck and hits a horizontal target within a specified tolerance. It is based on the initial tangent curve made by Elf Aquitaine. According to the simple tangent design method (see Figure 1), the bevel curve consists of two bevel sections and a bevel straight section of the bevel section. Depending on the performance of the maneuvering motor used, a minimum radius of curvature and shorter bevel segments are used to allow the directional operator to drill precisely to the initial kick-off point of the second bevel segment. In the second slant section, the same slanting motor used in the first slant section is used, so that the operator can determine the depth of the second slant point according to the working condition of the motor at the first slant section. The latest curve design, called double tangent curve (see Figure 2), with the same simple tangent method