FIELD: oil and gas industry.
SUBSTANCE: group of inventions refers to oil and gas industry, particularly to method and system for cementing casing pipe in well borehole with reverse circulation of cement grout. The method includes installation of a tool having plurality of pass-through apertures in the lower section of the casing pipe, then supply of multitude of plugs through annular space between the casing tube and borehole wall by means of a pump; the plugs contact with surface of instrument walls to maintain cement grout in annular space till cement grout hardens. The plugs and apertures can be of different shape.
EFFECT: facilitation of performing additional well operations without drilling out undesirable cement in casing tube.
28 cl, 18 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR FORCING FLUID SUBSTANCE INTO BOREHOLE INTO ZONE IN FRONT OF DRILLING BIT | 2002 |
|
RU2287662C2 |
| METHOD OF SECURING A HIDDEN CASING STRING OF A BOREHOLE WITH ROTATION AND CEMENTING OF THE ZONE ABOVE THE PRODUCTIVE FORMATION | 2020 |
|
RU2745147C1 |
| METHOD FOR LOCATING TRIP CEMENTING PLUG IN CASING STRING. | 2022 |
|
RU2805636C1 |
| METHOD AND DEVICE FOR IMPLEMENTATION OF PROCESSES IN UNDERGROUND BOREHOLE BY MEANS OF USAGE OF FLEXIBLE WELL CASING | 2006 |
|
RU2378479C2 |
| DEVICE FOR CEMENTING CASING STRINGS | 2023 |
|
RU2819027C1 |
| CEMENTING DEVICE AND METHOD FOR CASING PIPE WITH TWO CEMENTING PLUGS | 2005 |
|
RU2299309C2 |
| DEVICE FOR CONTROLLING HOLE-BOTTOM CEMENTING OF WELLS | 0 |
|
SU1411440A1 |
| NONDRILLED SLEEVE FOR STAGE CEMENTING OF CASING STRING | 1999 |
|
RU2173766C2 |
| SLEEVE FOR STAGEWISE CEMENTING OF CASINGS | 0 |
|
SU1350332A1 |
| METHOD OF ELIMINATING PROPPANT DEPOSITION CONDITIONS DURING WELL COMPLETION | 2015 |
|
RU2658400C1 |
