Special shut off device for liquidating blowout from the drill string

• Autorzy: Bujok P. , Klempa M. , Ryba J. , Porzer M. , Jakubcik M. , Stastny L. , Rado R.

Identyfikatory

DOI

10.7494/drill.2018.35.1.309

• Języki publikacji: EN

Abstrakty

EN

Crude oil and natural gas belong to the most important raw minerals used by industry. Their world’s consumption remains on a high level with an increasing tendency, similarly the demand for exploration-prospecting works. The drilling works associated with reservoir prospecting and development are connected with the risk of reaching intervals containing highly pressurized formation fluids and with blowouts. When drilling the first well in a given area, the operator frequently does not have a full set of data about reservoir parameters of the drilled horizons. Investors want the drilling companies finish their works in the shortest possible time, therefore technologies which maximize the drilling advancement are employed. One of such techniques is drilling with minimally higher hydrostatic pressure of mud as compared to the reservoir pressure. If the drilling hits a porous interval of elevated reservoir pressure, reservoir fluid may inflow to the wellbore. If the hydrostatic pressure of fluid column in the wellbore is lower than reservoir pressure, the wellbore will be fed with reservoir water, which will consequently migrate towards the top of the well. This may result in a kick and then a blowout. The inflow to the wellbore can be handled only by well trained crew and appropriate equipment. The crew has to recognize the flow, and depending on the condition of the well take suitable measures. Sometimes the lack of proper training, errors, hardware failures and improperly protected top of the well lead to a fully developed blowout from the well. Particularly dangerous are cases when the surface blowout prevention equipment or other elements of the well BOP facilities break down. In such situations rescue teams with specialist equipment have to be involved. Exemplary applications and technological potential of specialist blowout control equipment in uncontrolled kick of reservoir fluid though the string are presented in the paper. The designed tool and its functions allow for killing or reducing the outflow.

Słowa kluczowe

EN

blowout; blowout killing; damaged drillstring; oil and gas drilling blowout equipment

• Wydawca: AGH University of Science and Technology Press
• Czasopismo: AGH Drilling, Oil, Gas
• Rocznik: 2018
• Tom: Vol. 35, no. 1
• Strony: 309--321
• Opis fizyczny: Bibliogr. 15 poz., rys.

Twórcy

autor

Bujok P.

• VŠB-Technical University of Ostrava, Faculty of Mining and Geology, Ostrava Poruba, Czech Republic

autor

Klempa M.

• VŠB-Technical University of Ostrava, Faculty of Mining and Geology, Ostrava Poruba, Czech Republic

autor

Ryba J.

• VŠB-Technical University of Ostrava, Faculty of Mining and Geology, Ostrava Poruba, Czech Republic

autor

Porzer M.

• VŠB-Technical University of Ostrava, Faculty of Mining and Geology, Ostrava Poruba, Czech Republic

autor

Jakubcik M.

• HBZS Hodonín, MND S.A., Mikulčice, Czech Republic

autor

Stastny L.

• HBZS Hodonín, MND S.A., Mikulčice, Czech Republic

autor

Rado R.

• AGH University of Science and Technology, Faculty of Drilling, Oil and Gas, Krakow, Poland

Bibliografia

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Uwagi

EN

This article was written based on the project Institute of clean technologies for mining and utilization of raw materials for energy use – Sustainability program. Identification code: LO1406. Project is supported by the National Programme for Sustainability I (2013–2020) financed by the state budget of the Czech Republic and BS number 11.11.190.555 realized at FDO&G AGH UST

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).