SCHEDULING OF UNDERBALANCED DRILLING OPERATIONS
Titov, Nikolay N. – Cand.Tech.Sci., executive director, LLC NVP MODEM, nikoltit@yandex.ru, nikoltit@yandex.ru
Shibeko, Viktor N. – chief engineer, LLC NVP MODEM, svn20070809@gmail.com svn20070809@gmail.com
УДК 622.24
Key words: scheduling, underbalanced drilling, criterion of optimality, rig downtime.
The paper focuses on the issue of scheduling underbalanced drilling operations. The authors represent the problem of optimal scheduling in mathematical terms and identify difficulties of solving problems of this kind. In case of two crews (conventional drilling and underbalanced drilling) an optimal procedure for scheduling drilling operations is based on Johnson’s classical algorithm. The authors suggest a method to reduce total rig downtime and the number of rigs for underbalanced drilling. Examples are provided which show the capabilities of scheduling optimization as compared to «manual» scheduling procedures.
SCHEDULING OF UNDERBALANCED DRILLING OPERATIONS
Titov, Nikolay N. – Cand.Tech.Sci., executive director, LLC NVP MODEM, nikoltit@yandex.ru
Shibeko, Viktor N. – chief engineer, LLC NVP MODEM, svn20070809@gmail.com
Key words: scheduling, underbalanced drilling, criterion of optimality, rig downtime.
The paper focuses on the issue of scheduling underbalanced drilling operations. The authors represent the problem of optimal scheduling in mathematical terms and identify difficulties of solving problems of this kind. In case of two crews (conventional drilling and underbalanced drilling) an optimal procedure for scheduling drilling operations is based on Johnson’s classical algorithm. The authors suggest a method to reduce total rig downtime and the number of rigs for underbalanced drilling. Examples are provided which show the capabilities of scheduling optimization as compared to «manual» scheduling procedures.
