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2 287 674

(13)

(51)

IPC

E21B43/16(2006-01-01)

(21) (22)

Application

2005139322/03, 2005-12-16

(24)

Start date

2005-12-16

(22)

Actual filing date

2005-12-16

(45)

Published

2006-11-20

(72)

Inventor

Khisamov Rais SalikhovichFatkullin Rashad KhasanovichJusupov Izil' GalimzjanovichZagidullin Rafaehl' Gasimovich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Im. V.D. Shashina

METHOD FOR EXTRACTING OIL DEPOSIT USING HORIZONTAL WELLS Russian patent published in 2006 - IPC E21B43/16

Abstract RU 2287674 C1

FIELD: oil industry, possible use while extracting oil deposits using horizontal wells.

SUBSTANCE: in accordance to method, main transport horizontal shaft is drilled horizontally or at an angle to roof part of productive bed. From there additional branched descending shafts are drilled with lowering of their faces towards the end of main transport horizontal shaft. First additional branched descending shaft is drilled in continuation of main transport horizontal shaft and with same diameter. Second and following additional branched descending shafts are drilled from main transport horizontal shaft with gradually decreased diameters. After drilling of each additional branched descending shaft intensification processing of face zone and conservation by viscous-resilient composition are performed for time of drilling of next additional branched descending shafts.

EFFECT: increased oil yield of deposit.

1 ex, 1 dwg

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RU 2 287 674 C1

Authors

Khisamov Rais Salikhovich

Fatkullin Rashad Khasanovich

Jusupov Izil' Galimzjanovich

Zagidullin Rafaehl' Gasimovich

Dates

2006-11-20—Published

2005-12-16—Filed