FIELD: technological processes.
SUBSTANCE: group of inventions relates to method and systems for milling a guide window in a casing string. Method for milling a guide window in a casing string includes the steps of: introducing a milling assembly comprising a deflecting tool, inside the first wellbore and the first operating mode of the said milling assembly is used to create a guide window in the casing of said first wellbore. Then, the said deflecting tool is fixed in said first wellbore and a second mode of operation of said milling assembly is used to start the second wellbore through said guiding window.
EFFECT: technical result consists in reduction of the drilling time.
20 cl, 5 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| UNIT, METHOD AND SYSTEM FOR MILLING WELL SIDETRACK IN CASING | 2020 |
|
RU2808709C1 |
| METHOD FOR CONTROLLED CUT-OUT OF OPENING IN CASED WELL SHAFT USING PRESSURE DROP FOR MOVEMENT OF CUTTER | 2011 |
|
RU2552262C1 |
| WEDGE-DEFLECTOR ASSEMBLY AND THE DEFLECTING WEDGE FOR MULTILATERAL WELLS | 2015 |
|
RU2649683C2 |
| DEFLECTING DEVICE TO CUT PORT IN WELL CASING | 2016 |
|
RU2641150C1 |
| SET OF EQUIPMENT FOR CUTTING OPENING IN CASING STRING | 2009 |
|
RU2441132C2 |
| DEFLECTING DEVICE FOR OPENING CUTTING IN WELL CASING STRING | 2011 |
|
RU2481452C2 |
| SYSTEM FOR WINDOW CUTTING IN CASING PIPE | 2005 |
|
RU2278239C1 |
| CASING WINDOW CUTTING SYSTEM (VARIANTS) | 2023 |
|
RU2800047C1 |
| SYSTEMS AND METHODS FOR RETRACTABLE WEDGE ASSEMBLY AZIMUTHAL ORIENTATION | 2013 |
|
RU2608750C2 |
| SYSTEM FOR DRILLING MULTI-BARREL WELLS, WHICH ENABLES TO MINIMIZE NUMBER OF ROUND-TRIP OPERATIONS | 2015 |
|
RU2687729C1 |
