FIELD: oil and gas industry.
SUBSTANCE: group of inventions refers to method of pressure reduction in the first cavity by arranging the fluid from that cavity (40) with lower pressure, for example from annular space to the well head, to the second cavity (6) with higher pressure, for example to discharge pipe included in underwater system. According to the described method the possibility of movement of fluid available in the first cavity (40) via the first pipeline (39) to intermediate accumulator (30) is provided. Fluid pressure is increased in intermediate accumulator (30) by means of piston barrel (32) and fluid is moved from the above accumulator (30) to the second cavity (6). The invention also describes the device for implementing this method.
EFFECT: acquisition of information on normal functioning of cutout valves and seals.
10 cl, 8 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| CONTROL METHOD OF LUBRICANT INJECTION, AND LUBRICANT INJECTOR | 2008 |
|
RU2469177C2 |
| SYSTEM OF PIPELINE CONNECTION OF SURFACE X-MAS TREE FITTINGS | 2020 |
|
RU2740837C1 |
| POWER SYSTEM | 2005 |
|
RU2361066C2 |
| CONTROL METHOD OF SHUTOFF-CONTROL VALVES OF WELL CLUSTER, AND DEVICE FOR ITS IMPLEMENTATION | 2010 |
|
RU2453686C1 |
| RETURN OF UNDERWATER PRODUCTION AND PROCESSING EQUIPMENT | 2012 |
|
RU2600066C1 |
| OPERATING METHOD OF HYDROCARBON RAW MATERIAL DEPOSIT | 2010 |
|
RU2453685C1 |
| DEVICE AND METHOD OF CONTROLLING FLUID FLOW IN DOWNHOLE TOOL | 2008 |
|
RU2470153C2 |
| OIL-PRODUCING COMPLEX | 2014 |
|
RU2571124C2 |
| TREATMENT AND CLEANUP METHOD OF BOTTOM-HOLE ZONE, AND DEVICE FOR ITS IMPLEMENTATION | 2014 |
|
RU2555718C1 |
| FORMATION TESTER | 1993 |
|
RU2078924C1 |
