FIELD: oil and gas industry.
SUBSTANCE: method involves pumping of invert emulsion containing liquid hydrocarbons, emulsifier and water, with formation of high-viscosity medium at its interaction with water. Invert emulsion containing Neftenol NZ or Neftenol NZ-TAT is used as emulsifier, and pumping of invert emulsion to production well is alternated with pumping of water to it with formation of several alternating layers of invert emulsion and water in the well.
EFFECT: improving isolation method of water influx in production wells at reduction of invert emulsion flow rate.
2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| COMPOSITION FOR OIL WITHDRAWAL | 2002 |
|
RU2209959C1 |
| INVERT EMULSION FOR OIL RESERVOIRS TREATMENTIT'S COMPOSITION, PREPARATION AND APPLICATION METHODS | 2008 |
|
RU2381250C1 |
| METHOD FOR LIMITING WATER INFLOW IN PRODUCTION WELL | 2021 |
|
RU2754171C1 |
| METHOD FOR DEVELOPMENT OF OIL RESERVOIR HETEROGENEOUS IN PERMEABILITY | 2020 |
|
RU2748198C1 |
| METHOD OF TREATING NON-UNIFORM PERMEABILITY OIL RESERVOIR BY INJECTION OF INVERT EMULSION | 2017 |
|
RU2660967C1 |
| DEVELOPMENT METHOD OF NON-HOMOGENEOUS OIL FORMATION | 2011 |
|
RU2460874C1 |
| METHOD TO REDUCE WATER INFLOW IN PRODUCTION WELLS WITHOUT LIFTING OF DOWNHOLE PUMPING EQUIPMENT | 2016 |
|
RU2612693C1 |
| FORMATION PERMEABILITY CONTROL METHOD | 2013 |
|
RU2533397C2 |
| METHOD FOR TREATING DOWN-HOLE ZONE OF WELL IN MULTIPLE-BED OIL DEPOSIT | 1996 |
|
RU2092686C1 |
| METHOD OF LIMITING WATER INFLUX INTO WELL | 2023 |
|
RU2817425C1 |
