The problem of liquidation of the open eruption by drilling tools

• Autorzy: Bujok P. , Fibinger J. , Klempa M. , Porzer M. , Kalus D. , Rado R.

Identyfikatory

DOI

10.7494/drill.2014.31.2.199

• Języki publikacji: EN

Abstrakty

EN

Drilling process of deep borehole consists of different drilling operations. Each of them can cause numerous different drilling problems especially when a borehole is performed. While drilling the most dangerous problems can occur once the drilling fluids (oil, gas or water) spontaneously flow out from the drilled formations into the borehole and then to the surface. It can also happen that the pressures in the borehole are not balanced and an influx of fluid into the borehole (a kick) will occur. If no action is taken to stop a kick once it begins, then the fluids will be pushed out of the borehole and will be flowing uncontrollably to surface (blow-out). Blow-out is prevented by closing off the well at the surface with special kind of valves (Blow-out Preventers - BOPs). When pressure control over the well is lost, swift action must be taken to avert the severe consequences. These consequences may include: — endangering of human life, — loss of rig and equipment, — negative influence on the environment, — additional costs of bringing the well under control again, — loss of reservoir production. In the case of kick or blow-out will occur in the practical use are different procedures and methods to control a borehole. These procedures and methods depend on the actual drilling operation scenario. One of them can be a tripping operation when the drill string is pulled out or run back again. In this case the drill string is open either after a break-out or before making up the drill pipes and drill collars. There is a variety of tools that can be used to prevent the formation of fluids rising up inside the drill pipes. One of this tool is a safety valve (rod preventers - BOP) to prevent the blow-out of the drill string. This manuał safety valve should be kept on the rig floor at all times. It needs to be a fuli opening ball-type valve so there is no restriction to flow. This valve is installed onto the top of the drill string if a kick occurs during a trip. However, this solution is quite inconvenient and difficult because involves special heavy tools, e.g. a crane. Drilling process of deep borehole consists of different drilling operations. Each of them can cause numerous different drilling problems especially when a borehole is performed. While drilling the most dangerous problems can occur once the drilling fluids (oil, gas or water) spontaneously flow out from the drilled formations into the borehole and then to the surface. It can also happen that the pressures in the borehole are not balanced and an influx of fluid into the borehole (a kick) will occur. If no action is taken to stop a kick once it begins, then the fluids will be pushed out of the borehole and will be flowing uncontrollably to surface (blow-out). Blow-out is prevented by closing off the well at the surface with special kind of valves (Blow-out Preventers - BOPs). When pressure control over the well is lost, swift action must be taken to avert the severe consequences. These consequences may include: — endangering of human life, — loss of rig and equipment, — negative influence on the environment, — additional costs of bringing the well under control again, — loss of reservoir production. In the case of kick or blow-out will occur in the practical use are different procedures and methods to control a bore¬hole. These procedures and methods depend on the actual drilling operation scenario. One of them can be a tripping operation when the drill string is pulled out or run back again. In this case the drill string is open either after a break-out or before making up the drill pipes and drill collars. There is a variety of tools that can be used to prevent the formation of fluids rising up inside the drill pipes. One of this tool is a safety valve (rod preventers - BOP) to prevent the blow-out of the drill string. This manuał safety valve should be kept on the rig floor at all times. It needs to be a fuli opening ball-type valve so there is no restriction to flow. This valve is installed onto the top of the drill string if a kick occurs during a trip. However, this solution is quite inconvenient and difficult because involves special heavy tools, e.g. a crane. This paper presents a new solution making use of special control equipment for the blowing open drill string. This equipment is based on a hydraulic press (named "Drill Pipę Rescue Press I") which has been developed by HBZS, MND S.A. Hodonin and VSB-Technical University of Ostrava, supported by Faculty of Drilling, Oil and Gas AGH-UST Kraków.

Słowa kluczowe

EN

liquidation of open eruption; drilling tools; drill string

• Wydawca: AGH University of Science and Technology Press
• Czasopismo: AGH Drilling, Oil, Gas
• Rocznik: 2014
• Tom: Vol. 31, no. 2
• Strony: 199--205
• Opis fizyczny: Bibliogr. 5 poz., fot.

Twórcy

autor

Bujok P.

• VSB - Technical University of Ostrava; Faculty of Mining and Geology; Institute of Geological Engineering; Czech Republic

autor

Fibinger J.

• HBZS Hodonin; Czech Republic

autor

Klempa M.

• VSB - Technical University of Ostrava; Faculty of Mining and Geology; Institute of Geological Engineering; Czech Republic

autor

Porzer M.

• VSB - Technical University of Ostrava; Faculty of Mining and Geology; Institute of Geological Engineering; Czech Republic

autor

Kalus D.

• VSB - Technical University of Ostrava; Faculty of Mining and Geology; Institute of Geological Engineering; Czech Republic

autor

Rado R.

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

Bibliografia

• [1] De Geare I; Haughton D.; McGurk M: The Guide to Oilwell Fishing Operations - Tools, Techniques, and Rules of Thumb. Gulf Professional Publishing, 2003. ISBN:978-0-7506-7702-2.
• [2] Fanguy D.: CoiledTubing Conveyed Hydromechanical Pipe Cutting: A Safe, Effective Alternative to Chemical and Explosive Severing Methods. Presented at SPE ICoTA 2001 Coiled Tubing Roundtable and Exhibition.
• [3] HinojosaR.; Ryan J.; WymanR.; Barton W.: Whipstock Performance Review in Gulf Coast Region Yields Operational. IADC/SPE paper #39402, March 1998
• [4] Pinka I; Sidorova M.; Dudla A. N.: Vrtne supravy a ich diagnostikovanie. Fakulta BERG, TU Kośice, Slovensko, 2009. ISBN: 978-80-89284-28-3.
• [5] Bujok P; Gondek H.; Frydryśek K.; Kalus D.; Zegzulka J.; Klempa M; Porzer M.; Pavluś J.; Kostrhun J.; Selzer L.; Weiper M.: Reśeni dilćich problemu zmahani otevfene erupce vrtnim nafadim. Zaverećna zprava k HS 511 301, Ostrava 2013.