FIELD: oil and gas production industry, particularly methods or devices for cementing, for plugging holes, crevices, or the like.
SUBSTANCE: device comprises production tubing lowered in well and pipe string arranged inside production tubing. Production tubing is includes bush having central channel located in lower production tubing part. Pipe string is connected with nipple through sub having seal in top part thereof. Upper and lower radial channels are created in low pipe string part and in upper sub part under sub seal correspondingly. Outer thrust is located over lower radial channels of the sub. The sub may cooperate with central bush channel in air-tight manner.
EFFECT: simplified technology for waterproofing composition preparation and increased waterproofing work quality.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEVICE FOR WATERPROOFING OPERATIONS EXECUTING IN WELL | 2006 |
|
RU2309241C1 |
| DEVICE FOR WATERPROOFING OPERATIONS PERFORMING IN WELL | 2006 |
|
RU2314409C1 |
| DEVICE TO PERFORM WATERPROOFING WORKS IN WELL | 2006 |
|
RU2306404C1 |
| DEVICE FOR WELL WATERPROOFING | 2006 |
|
RU2305753C1 |
| METHOD TO ISOLATE WATER-BEARING RESERVOIR INSIDE WELL | 2006 |
|
RU2321724C1 |
| DEVICE FOR CASING PIPE CEMENTING INSIDE WELL | 2006 |
|
RU2307232C1 |
| DEVICE FOR CEMENTING SHANK IN WELL | 2010 |
|
RU2425958C1 |
| DEVICE FOR CEMENTING SHANK END IN WELL | 2010 |
|
RU2431732C1 |
| DEVICE TO CEMENT TAIL IN WELL | 2011 |
|
RU2455451C1 |
| HYDRAULIC FRACTURING METHOD FOR LOW-PERMEABLE FORMATION WITH IMPERMEABLE LAYER AND WATER-BEARING INTERLAYER | 2014 |
|
RU2550638C1 |
