Bending Tool Face Measurements While Drilling Delivers New Directional Information, Improved Directional Control

Abstract

This paper introduces bending tool face, a new measurement with applications in directional drilling. The measurement is derived from two perpendicular bending moment sensors in the BHA and identifies the orientation of BHA bending with respect to gravity high side while drilling, both in rotating and sliding modes. The paper presents the underlying theory and motivation for the measurement, describes its implementation into a downhole MWD tool and shows measurement examples from field applications. Furthermore, the paper outlines the use of the data for directional calculations. The paper concludes with a discussion of applications in which the bending tool face information adds value, such as reducing uncertainty in casing exit applications and improving directional control in challenging 3-D well profiles. The discussion is supported with field results.

Vibration Technologies for Friction Reduction to Overcome Weight Transfer Challenge in Horizontal Wells Using a Multiscale Friction Model

“…The slide drilling mode, however, brings its own problems. These problems fall mainly into three categories: setting a tool-face after making a connection or coming off the bottom; maintaining the required tool-face orientation while drilling ahead; and transferring enough effective weight to the bit to enable acceptable drilling progress [14]. To overcome these problems, these are two kinds of technology systems that have been widely used in the fields.…”

“…The HOS is comprised of two tools: the Drilling Agitator Tool (DAT) and the Shock Tool located directly above [14,15], as shown in Figure 1. The DAT is composed of two sections: the power section and the valve and bearing section.…”

Development of torque clutch drilling tool and evaluation of drag reduction performance

“…7,8 The mechanical drag reduction methods are more suitable than chemical method due to low-cost and environment friendly. The mechanical technologies include hydraulic oscillator tool, [9][10][11][12][13] Slider Drilling Technology, [14][15][16][17][18][19][20] roller centralizer, [21][22][23][24] and so on.…”