Perforation Cleanup by Means of Dynamic Underbalance (Record no. 187640)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02942nab a2200217 4500 |
| 008 - CÓDIGOS DE INFORMACIÓN DE LONGITUD FIJA - INFORMACIÓN GENERAL | |
| Campo de control de longitud fija | 260224s2013 xxu ing |
| 041 ## - IDIOMA | |
| Idioma | Inglés |
| 245 00 - TITULO | |
| Título | Perforation Cleanup by Means of Dynamic Underbalance |
| Subtítulo | New Understanding |
| 260 ## - PUBLICACION, DISTRIBUCION, ETC | |
| Lugar de publicación, distribución, etc. | |
| Nombre de publicador, distribuidor, etc. | |
| Fecha de publicación, distribución, etc. | mar. 2013 |
| 270 ## - FECHA DE CARGA | |
| Fecha de carga | 03/05/2013 ; 02/05/2013 |
| 300 ## - DESCRIPCION FISICA | |
| Otra extensión | 9 p. ; 11-20 |
| 520 ## - RESUMEN, ETC | |
| Resumen | Traducción del resúmen del autor: Dynamic-underbalance (DUB) perforating is a completion technique that uses a perforating system engineered to create a rapid underbalance immediately upon formation perforation (within tens of milliseconds or faster). This technique--properly applied--improves well deliverability by effectively cleaning the newly created perforation tunnels, regardless of initial static pressure conditions (overbalanced, underbalanced, or balanced). The authors are engaged in a multiyear program of perforateand-flow laboratory experiments [along the lines of American Petroleum Institute Recommended Practice (API RP) 19B Section 4], carefully controlling and measuring wellbore transients and measuring post-shot productivities. Experiments thus far have been limited to static balanced conditions to ensure that any cleanup observed would be attributable solely to wellbore dynamics rather than to preshot static pressure conditions. Our results provide new insight into perforation-damage and -cleanup mechanisms. We observed that a dominant source of perforation damage can be the reduction in effective flowing perforation length, and a primary mechanism of DUB cleanup is to increase this effective length. Although increasing the permeability of the crushed zone that may surround the tunnel (a conventional simplified treatment of perforation damage and cleanup) does indeed improve the productivity of real wells, the additional processes of enlarging tunnel diameter and reducing crushed-zone thickness further improve productivity. Increasing the effective tunnel length provides yet another means of productivity gain and, under many circumstances, is the dominant beneficial effect. We present productivity predictions of various downhole scenarios to demonstrate and quantify these effects. These findings indicate that the performance differential (between DUB and non-DUB techniques) at downhole conditions can be more significant than previously recognized. Future work will explore varying initial static pressure conditions (underbalance, overbalance) in conjunction with shot-time wellbore pressure transients. Work is also ongoing to probe the limits of the findings reported herein, particularly the influences of formation properties (permeability, strength, and lithology) and drilling damage. |
| 581 ## - ESTADO DE COLECCIÓN | |
| Estado de colección | 1 |
| 773 0# - CORRECCIÓN | |
| Título | SPE Drilling & Completion |
| Partes relacionadas | 28 |
| 942 ## - DESC. DE MATERIAL | |
| Tipo de item KOHA | Artículo de Revista |
| 100 1# - RESPONSABLE PERSONAL | |
| Apellido, Nombre | Grove, B. |
| 9 (RLIN) | 53065 |
| 100 1# - RESPONSABLE PERSONAL | |
| Apellido, Nombre | Harvey, J. |
| 9 (RLIN) | 53066 |
| 100 1# - RESPONSABLE PERSONAL | |
| Apellido, Nombre | Zhan, L. |
| 9 (RLIN) | 53067 |
| Biblioteca propietaria | Biblioteca actual | Fecha de adquisición | Inventario | Total de préstamos | Inventario | Fecha de carga | Tipo de item KOHA |
|---|---|---|---|---|---|---|---|
| Biblioteca Alejandro Angel Bulgheroni | Biblioteca Alejandro Angel Bulgheroni | 06/03/2026 | 200059775 | 200059775 | 06/03/2026 | Artículo de Revista |
