METHOD OF SIMULTANEOUS SEPARATE OPERATION OF THREE BEDS WITH ONE WELL Russian patent published in 2010 - IPC E21B43/14 

FIELD: oil and gas industry.

SUBSTANCE: method involves lowering of pipe string to the well, which are equipped with packers, and extraction of products of beds. As pipe string there used is the first and the second string. The third and the fourth pipe strings are arranged in the first string. Flush-joint pipes are used as string pipes. Bottom of the first string is arranged in the perforation interval of lower bed. Above perforation interval of lower bed and below perforation interval of middle bed on the first pipe string there arranged is lower packer and filter in perforation interval of middle bed. Bottom of the third string is arranged in the first string below perforation interval of the first string. On the third string below filter of the first string and inside the first string there arranged is packer of the third string. Bottom of the fourth string is arranged above filter interval of the first string. Above perforation interval of middle bed and below perforation interval of upper bed on the first string there arranged is upper packer. Bottom of the second string is arranged above upper packer. The second, the third and the fourth strings are equipped each with its pump equipment or working agent supply, and product extraction or supply of working agent is performed separately for each bed.

EFFECT: possibility of separate liquid extraction from three beds or separate liquid pumping to three beds through one well.

1 dwg