METHOD AND SYSTEM FOR DRILLING AND COMPLETION OF SIDE HOLES, AND CONNECTING DEVICE Russian patent published in 1998 - IPC

Abstract RU 2103472 C1

FIELD: bore-hole drilling technology. SUBSTANCE: this relates to system of side drilling relative to main hole which is encased. According to method, at least part of casing string has side opening intended for drilling side hole. Guiding device is installed in part of casing string at its side opening and is controlled from ground surface. Side casing string is installed in bore-hole and creates adapter for connection with main casing string. In addition, aforesaid arrangement is applicable to method of drilling and completion of side drainage from encased main hole. EFFECT: high efficiency. 50 cl, 16 dwg

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RU 2 103 472 C1

Authors

L'Ju Khehjes[Ca]

Lehrri Komo[Ca]

Kristian Vittrish[Fr]

Rehj Smit[Ca]

Dates

1998-01-27—Published

1993-06-11—Filed