Horizontal well logging guiding track optimization method

Abstract

The invention belongs to the field of horizontal well logging guiding technologies, and discloses a horizontal well logging guiding track optimization method. The method is mainly characterized in that track optimization before landing includes the steps of determining the position of a new target point, calculating the radius of a new track and designing the track of the new target point, track optimization after entering layers includes the steps of setting a peak valley control line, building a track control point and building a first section track, a second section track and each following section track. The horizontal well logging guiding track optimization method achieves smoothness of a whole horizontal well track, effectively controls the frontal distance from the target point, reduces the friction between a drilling tool and the well wall, improves the rate of penetration, shortens the well drilling period and creates good conditions for follow-up construction.

Description

technical field [0001] The invention belongs to the technical field of horizontal well logging guidance, and in particular relates to a method for optimizing a horizontal well logging guidance trajectory. Background technique [0002] From the deflection to the bottom of the horizontal well, the trajectory of the wellbore can be divided into two stages: before landing and in the layer. At present, the widely used method is: in the first stage, before landing, go down according to the designed trajectory, and when the angle difference is reduced to about 5 degrees , go down steadily and obliquely to find the layer, uncover the target layer, and then turn flat to enter the target; after entering the layer in the second stage, the line connecting two adjacent target points is used as the design trajectory, and the drill bit is made to travel as close to a straight line as possible through frequent small-scale orientation. [0003] The disadvantage of the above method is that th...

AI Technical Summary

Problems solved by technology

[0003]The disadvantage of the above method is that there are two more inflection points in the trajectory segment before landing, and the target distance is increased; Causes frequent ups and downs in trajectory

As a result, the wellbore trajectory is not smooth, and the friction of the wellbore increases, which increases the difficulty and even the risk of subsequent construction.

Images