FIELD: oil and gas industry, particularly for drilling oil and gas wells and for equipping boring tools with centralizers, balancers and similar means.
SUBSTANCE: centralizer includes tubular body with connection thread and with centering members having longitudinal slots. Length of centering member defined by working surface measured in vertical direction is chosen in accordance with centering member diameter and boring head diameter and is characterized by the following criterion: Lц ≤ 25ч35(dд-dц), where Lc is length of working centrator surface in vertical direction, mm; db is boring head diameter, mm; dc is centering member diameter, mm.
EFFECT: increased efficiency of drilling process, reduced time consumption for well securing.
1 tbl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEVICE FOR STABILIZATION OF INCLINED WELL BORE IN DRILLING WITH DOWNHOLE MOTOR | 1992 |
|
RU2049903C1 |
| SPINDLE-SECTION OF DEFLECTING TURBODRILL | 1992 |
|
RU2082862C1 |
| PROCEDURE FOR CONSTRUCTION OF HORIZONTAL WELL IN DEVONIAN STRATA | 2009 |
|
RU2421586C1 |
| DOWNHOLE DRILL STRING ASSEMBLY | 1991 |
|
RU2015290C1 |
| UNIVERSAL MECHANICAL CENTRALIZING DEVICE | 2004 |
|
RU2256768C1 |
| ABOVE-BIT WELL-GAUGING TOOL AND STABILIZER | 0 |
|
SU899835A1 |
| CONICAL CALIBRATION MEANS FOR DRILL STRING BOTTOM ASSEMBLY | 2005 |
|
RU2298630C2 |
| ASSEMBLY OF BOTTOM OF DRILL STRING FOR DRILLING OF OFFSHOOTS FROM HORIZONTAL PART OF UNCASED WELL | 2019 |
|
RU2715482C1 |
| METHOD FOR DRILLING VERTICAL AND CROOKING WELLS | 1991 |
|
RU2015289C1 |
| WELL SHAFT CALIBRATOR | 2008 |
|
RU2377385C2 |
