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Study on Build-up Rate of Push-the-bit Rotary Steerable Bottom Hole Assembly
| Content Provider | Semantic Scholar |
|---|---|
| Author | Wang, Heng Guan, Zhichuan Shi, Yucai Liang, Deyang |
| Copyright Year | 2017 |
| Abstract | Rotary steerable drilling is an effective technique for drilling directional wells. Given the currently inadequate understanding about the variation of build-up rate for rotary steerable bottom hole assembly under different drilling condition, a build-up rate prediction model needs to be established. Aimed at push-the-bit rotary steerable bottom hole assembly, a continuous beam model was applied to study the mechanical properties. Further considering drill bit cutting anisotropy, the build-up rate prediction method was built. Effects of configuration parameters on build-up rate were analyzed. Results showed that build-up rate decreases with the increasing of distance between bit and steering pads. There was an optimal distance between bit and near-bit stabilizer to obtain a maximum build-up rate. With lower flexural rigidity and longer length of flex sub, the build-up rate is much higher. Smaller diameter of near-bit stabilizer diminished build-up rate. However, smaller diameter of upper stabilizer improved build-up rate. And build-up rate became bigger when distance between the two stabilizers extended. The study can provide theoretical basis for optimal configuration design of push-the-bit rotary steerable bottom hole assembly to get higher steering ability. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www2.tku.edu.tw/~tkjse/20-3/15-AE10601_0030.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
