FIELD: petroleum industry.
SUBSTANCE: invention relates to drilling technique and is intended for application as the supporting and centralising element in the arrangement of the bottom of the drilling string. The resilient centraliser contains a shaft and a frame with curved cleets installed on the shaft by means of radial supports and a spacer sleeve. An additional frame is mounted on the shaft. Curved cleets of both the frames are rigidly connected by straight supporting cleets. The invention provides reduction of contact pressure of supporting elements on the wall of the well.
EFFECT: reduction of contact pressure of supporting elements on the wall of the well.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| ELASTIC CENTRALIZER | 1995 |
|
RU2088742C1 |
| GUIDE BAR OF DOWNHOLE DRILL STRING ASSEMBLY | 2001 |
|
RU2197592C1 |
| DIRECTED SLANT DRILLING METHOD | 1992 |
|
RU2047723C1 |
| GUIDE ROD OF DRILL STRING BOTTOM-HOLE ASSEMBLY | 1992 |
|
RU2069731C1 |
| DRILL PIPE WITH CENTRALIZERS | 2019 |
|
RU2715576C1 |
| DECENTRALIZER OF BOTTOM-HOLE LAYOUT | 1996 |
|
RU2106468C1 |
| PIVOTED WHIPSTOCK | 1997 |
|
RU2134338C1 |
| HINGED ASSEMBLY FOR DIRECTIONAL DRILLING OF WELLS | 0 |
|
SU1735564A1 |
| METHOD OF WELL DIRECTIONAL DRILLING OF DEFLECTING TOOL WITH GUIDE ROD | 2001 |
|
RU2204681C1 |
| CENTRALISER | 2009 |
|
RU2387794C1 |
