FIELD: process engineering.
SUBSTANCE: invention relates to expansion of narrow pipes, in particular to reconditioning of well casing in deep wells of oil fields. Deformed pipe diameter is recovered by fitting narrow pipe spreader head inside the pipe. Note here that said spreader has tubular case with conical head and mandrel fitted there inside and multiple steel balls. Note also that said case has multiple tidal locating holes to accommodate a steel ball. Note that steel balls can displace inside said hole in direction parallel with case axis top extend therefrom. Expander is displaced in pipe direction by external force. Note here that if pipe hinders ball displacement the balls displace in direction opposite the expander displacement to expand the deformed pipe diameter.
EFFECT: higher strength, expanded performances.
7 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| TURBINE DRIVE OF THE SHOE-BIT FOR DRILLING A COMPLICATED SECTION OF THE WELL | 2022 |
|
RU2781653C1 |
| BALL SEAT FOR HIGH PRESSURE AND HIGH TEMPERATURE | 2011 |
|
RU2543011C2 |
| EXPANSIBLE MEANS (VARIANTS), DEVICE AND METHOD OF EXPANSIBLE MEANS AND DEVICE USAGE IN DRILLING WELL (VARIANTS) | 2003 |
|
RU2263198C2 |
| METHOD FOR WELL FINISHING WITH APPLICATION OF EXPANDABLE TAIL AND ITS FURTHER CEMENTING (VERSIONS) | 2006 |
|
RU2405921C2 |
| DEVICE FOR INSTALLATION OF EXPANDABLE INTERNAL LINING WITH INCREMENTAL CONTROL OF SETTING DIAMETER | 2010 |
|
RU2509869C2 |
| DEVICE WITH EXPANDABLE TUBULAR COMPONENT AND METHOD FOR USING THIS DEVICE IN THE WELL | 2001 |
|
RU2225497C2 |
| SYSTEM FOR REINFORCING A SECTION OF WELL BOREHOLE | 2002 |
|
RU2293834C2 |
| ANCHOR AND HYDRAULIC SETTING DEVICE IN ASSEMBLY | 2010 |
|
RU2521238C2 |
| BOREHOLE EXPANDING REAMER | 2007 |
|
RU2451153C2 |
| DEVICE FOR RESTORATION OF DEFECTIVE SECTIONS OF PRODUCTION STRINGS OF OIL AND GAS WELLS WITH CONTROLLED CONE-TRANSFORMER | 2017 |
|
RU2639006C1 |
