FIELD: mining.
SUBSTANCE: claimed equipment comprises the production string and the assembly with sliding coupling. The latter included the pipe section with recess and bore as well as pipe coupling made to slide in the recess. The seal is fitted at the coupling outer surface, Note here that said recess houses the flow control valve.
EFFECT: higher efficiency and higher reliability of well fluid flow control.
8 cl, 6 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| COMPLETION OF WELL | 2011 |
|
RU2606479C2 |
| WELL COMPLETION | 2011 |
|
RU2719852C2 |
| DOWNHOLE VALVE SYSTEM | 2015 |
|
RU2700352C2 |
| SLIDING SLEEVE DOWNHOLE SYSTEM | 2019 |
|
RU2804463C2 |
| WELL PUMPING SYSTEM FOR LIQUID PUMPING | 2016 |
|
RU2721041C2 |
| WELL COMPLETION SYSTEM | 2017 |
|
RU2718897C2 |
| ANNULAR BARRIER WITH EXPANSION DETECTION DEVICE | 2012 |
|
RU2606474C2 |
| MULTI-ZONE COMPLETION WITH FORMATION HYDRAULIC FRACTURING | 2012 |
|
RU2601641C2 |
| DOWHOLE PUMPING ASSEMBLY AND A DOWNHOLE SYSTEM | 2014 |
|
RU2657564C2 |
| DOWNHOLE PRODUCTION CASING STRING | 2014 |
|
RU2677178C1 |
