METHOD FOR EXTRACTING HETEROGENEOUS OIL-BITUMEN DEPOSIT Russian patent published in 2006 - IPC E21B43/24 

FIELD: oil industry, possible use during extraction of deposit of high viscosity and bituminous oil.

SUBSTANCE: in accordance to method during extraction of heterogeneous oil-bitumen deposit, extracting two-mouth horizontal well is built. Above extracting two-mouth horizontal well in parallel two it forcing two-mouth horizontal well is built, thus forming a pair of two-mouth horizontal wells. At adjacent section of deposit, analogical pair of two-mouth horizontal wells is built. Pairs of two-mouth horizontal wells are driven separately, enveloping most productive deposit zones. Modes of operation of pairs of two-mouth horizontal wells on extraction are set with consideration of special features of each section of deposit. Forcing of heat carrier is performed into upper forcing two-mouth horizontal wells from both mouths. Extraction of product from product two-mouth horizontal wells is performed using swab pump, while swab pumps of adjacent product two-mouth horizontal wells are connected to each other.

EFFECT: increased oil yield coefficient and increased coverage of bed by thermal effect and displacement.

1 ex, 1 tbl, 1 dwg