Tsomko V. Hydraulic layer fracturing technology improvement in oil fields conditions of Ukraine

Dissertation is devoted to questions of improvement on the Ukrainian oil fields hydraulic fracturing of formation (HFF) planning and conducting methods. In dissertation is developed improved HFF design method on the Ukrainian oil fields from selection of operation objects, planning of technological parameters and modes of their realization to estimation of process results with argumentation of optimal parameter size requirements. It’s offered new additional criterion – capacity-power parameter, which provides the effective selection of wells for HFF. Experimentally set and practically confirmed, that saturation of pore space by micellar muds before penetrating at of the hydro fracturing fluid filtrate help to decrease the colmatation of productive zone and as a result it’s developed two stage HFF technology with previous saturation of pore space by micellar mud. Four types dependences of effective pressure change of creating and fixing fracturing are selected, on the basis of what operative HFF process monitoring method was developed. The results of the conducted researches entered to the normative documents of JSC “Ukrnafta” and are used during the realizing of hydraulic fracturing processes at all oil-gas-fields of JSC “Ukrnafta” and others enterprises.