ПРОЕКТУВАННЯ КОМПОНОВОК НИЗУ БУРИЛЬНОЇ КОЛОНИ З ДВОМА ПОРОДОРУЙНУЮЧИМИ ІНСТРУМЕНТАМИ З НАДТВЕРДИМ ОЗБРОЄННЯМ
Сalculation methods for designing bottom hole assembles (BHA) with two rock cutting elements with PDC cutters for drilling wells of large diameter with the ability to control trajectory of well are developed. The mathematical model for calculating BHA wells of large diameter using two rock cutting e...
Gespeichert in:
| Datum: | 2020 |
|---|---|
| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | Ukrainian |
| Veröffentlicht: |
Институт сверхтвердых материалов им. В. Н. Бакуля Национальной академии наук Украины
2020
|
| Schlagworte: | |
| Online Zugang: | http://altis-ism.org.ua/index.php/ALTIS/article/view/159 |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Назва журналу: | Tooling materials science |
Institution
Tooling materials science| Zusammenfassung: | Сalculation methods for designing bottom hole assembles (BHA) with two rock cutting elements with PDC cutters for drilling wells of large diameter with the ability to control trajectory of well are developed.
The mathematical model for calculating BHA wells of large diameter using two rock cutting elements – bit and hole opener, is developed. Basic technical and geological factors affecting the BHA elements (stress-stain state of BHA, lateral forces arising from the impact of geology) are modeled. An algorithm for determining the weight distribution between the bit and the hole opener is designed. The formation of eccentric displacement of hole opener relative pilot hole and change of curving intensity in drilling is simulated.
Basic steps of the calculation cycle are shown, practical calculation using developed method is performed resulting in interval determining the following parameters – the weight on bit and hole opener, lateral forces on the rock cutting elements, eccentric displacement of hole opener, curving intensity of well.
Scientific novelty of proposed method consists in integrated approach to the calculation of configurations with two rock cutting elements that allows for iterative cyclical calculation of constant refinement of the basic parameters and the creation of data array to design the well trajectory.
The method of calculating BHA with two rock cutting elements allows to determine the rational design of BHA for directional drilling by changing the design parameters of drill collar, centralizing and supporting element (CSE), bit, hole opener and eccentricity limiter |
|---|