CONTROL SYSTEM OF MUTUAL ORIENTATION PROCESS OF SHAFTS DURING CLUSTER DRILLING OF OIL AND GAS WELLS

摘要

FIELD: oil and gas industry.;SUBSTANCE: control system of mutual orientation process of shafts during cluster drilling of oil and gas wells is suggested; the system comprises the core body including power supply source, electromagnetic oscillator made as dipole installed over bit of the drilling well (DW) thus ensuring electromagnetic coupling between DW string and at least one production string (PS) of drilled holes (DH) and the surface part including converter of the parameter being function of electrical performance for a section of the circuit formed by DW string and rock in the vicinity of dipole area to voltage and m converters of the parameter being function of electrical performance for a section of the circuit formed by PS DH and a section of the rock lying between DW bit and PS DH to voltage, where m is a number of PS. At that the above converters are made as toroidal inductance coils placed axially at the wellhead (DW), and m of the same coils is placed at the wellhead, where m≥1; value of current induced in pipe strings is selected as electrical performance for rock sections and is defined as per the mathematical expression specified above.;EFFECT: improved accuracy for determination of a drilling well position in regard to unlimited quantity of production strings of wells drilled earlier with number identification for these wells.;2 cl, 3 dwg