Determination of the loads on the steering module of the push-the-bit rotary steerable system in the context of its reliability
| Parent link: | Acta Montanistica Slovaca Vol. 25, iss. 3.— 2020.— [P. 393-405] |
|---|---|
| Corporate Author: | |
| Other Authors: | , , , |
| Summary: | Title screen The paper deals with an original approach to the study of loads on elements of a bias unit of the push-the-bit rotary steerab a specific factor of system reliability, which becomes especially important as the share of the development of unconventional oil fields grows. It is a high-cost process that increases requirements for the reliability of drilling equipment. The basic principle of the proposed idea is the representation of the module of a rotary steerable system as an absolutely elastic rod, which is acted upon by a complex of forces arising from the directional and horizontal undulating well profiles. Under certain conditions, the interaction of these forces, resulting in the load on the steering pad, can approach the maximum values, which increases the risk of failure of the entire bottom-hole assembly of the rotary controlled system. This article substantiates the phenomenon of multiple load drops on the steering pad in the process of changing the drilling interval of directional wells from ascending to descending when drilling a horizontal section with a wave profile. In this regard, based on the analysis of the weight on bit effect on the steering pad load, it is recommended to adjust the drilling mode to reduce the risk of failure of the push-the-bit rotary steerable system. The advantage of the presented method, along with computational efficiency and visualization, is applicability for load analysis not only for push bit rotary steerable systems but also for the most modern combined systems. Attention is also paid to the possibility of reducing the load on the steering pedals by changing the concentratio in the drilling mud upon the condition of follow effect of these changes on the rotary steerable systems operation. |
| Published: |
2020
|
| Subjects: | |
| Online Access: | https://actamont.tuke.sk/pdf/2020/n3/11zhironkin.pdf |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=669341 |
| Summary: | Title screen The paper deals with an original approach to the study of loads on elements of a bias unit of the push-the-bit rotary steerab a specific factor of system reliability, which becomes especially important as the share of the development of unconventional oil fields grows. It is a high-cost process that increases requirements for the reliability of drilling equipment. The basic principle of the proposed idea is the representation of the module of a rotary steerable system as an absolutely elastic rod, which is acted upon by a complex of forces arising from the directional and horizontal undulating well profiles. Under certain conditions, the interaction of these forces, resulting in the load on the steering pad, can approach the maximum values, which increases the risk of failure of the entire bottom-hole assembly of the rotary controlled system. This article substantiates the phenomenon of multiple load drops on the steering pad in the process of changing the drilling interval of directional wells from ascending to descending when drilling a horizontal section with a wave profile. In this regard, based on the analysis of the weight on bit effect on the steering pad load, it is recommended to adjust the drilling mode to reduce the risk of failure of the push-the-bit rotary steerable system. The advantage of the presented method, along with computational efficiency and visualization, is applicability for load analysis not only for push bit rotary steerable systems but also for the most modern combined systems. Attention is also paid to the possibility of reducing the load on the steering pedals by changing the concentratio in the drilling mud upon the condition of follow effect of these changes on the rotary steerable systems operation. |
|---|