Aggressiveness of fluids in the Timan-Pechora oil- and gas-bearing province
UDC: 622.24
DOI: -
Authors:
BLIZNYUKOV VLADIMIR YU.
1,
KAMENSKIKH SERGEY V.2,
PARMUZINA LYUBOV V.2,
ROSTOVSHCHIKOV VLADIMIR B.2
1 RANS, Moscow, Russia
2 Ukhta State Technical University, Ukhta, Russia
Keywords: hydrogen sulfide, oil and gas complex, aggressive fluids, hydrogen sulfide aggression, Timan-Pechora oil- and gas-bearing province
Annotation:
Based on the experience of drilling, production and transportation of hydrocarbon raw materials, the presence of hydrogen sulfide (H2S up to 18,5 % vol.) in the subsoil of the Timan-Pechora oil- and gas-bearing province (TPOGP) deposits was established. The authors of the article present the results of studies and analysis of the fluids aggressiveness in the Timan-Pechora oil- and gas-bearing province. The main patterns of hydrogen sulfide distribution in hydrocarbons of its deposits are revealed. As a result, it was determined that out of 183 oil and gas fields discovered in the Timan-Pechora oil- and gas-bearing province, about 40 % have aggressive fluids, which imposes a number of mandatory requirements for wells construction, production and transportation of hydrocarbon raw materials. In addition, the necessity of developing process fluids compositions (drilling, buffer and cement solutions) that provide high-quality isolation and reliable tightness of highly permeable formations separation containing H2S, using available and low-toxic chemical reagents is substantiated.
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