POWER SOURCE FOR BOREHOLE EQUIPMENT Russian patent published in 2008 - IPC H05K5/00 

FIELD: well drilling, particularly electric equipment to supply power to borehole equipment of telemetering system during well drilling.

SUBSTANCE: power source comprises body with power supply members installed in the body and grouped in several rows. The body is composed of inner and outer pipes included in drilling string. Drilling mud flows via inner pipe. Power supply members are installed in annular cavity defined by pipes and sealed with caps from both sides thereof. The caps are fixed to inner pipe. Lower cap has drilling mud inlet orifices and connector for power source linkage to borehole equipment. Partitions, which separate power supply members one from another, are fixedly connected to outer pipe to prevent axial power supply member displacement. Partitions have outer diameters less that inner pipe diameter. Slots or orifices for connection wire receiving are created in the partitions.

EFFECT: increased power, reliability and service life.

5 cl, 2 dwg