Currently, there are many articles in the world related to the drilling of long-range wells. This article presents the design of the drill string for the Manto-2 production interval with a diameter of 155.58 mm of the VFN-752 well in the Varadero field.
The use of a combined aluminum drill string and a steel drill pipe is proposed due to the difficulties of this type of well, characterized by high values of torque, drag and equivalent circulation density due to the large horizontal displacement and its depth vertical. A comparison is made of the two proposed drilling string. The first consists only of steel drill pipes, and the second consists of aluminum and steel drill pipes. Using the specialized Landmark (Well Plan) software, the torque, drag and stress values acting on the drill string for various drilling modes and hydraulic calculations were modeled to determine the equivalent circulation density during drilling. The simulation results show that the use of drill strings in combination with aluminum and steel pipes can reduce the torque, drag and stress on the drill string in this type of well, which is an advantage in well drilling with extended reach.
Silva N.S., Netto T.A. A comparative study of multiaxial fatigue criteria for aluminum drill pipe life prediction //. Universidad de Federal do Rio de Janeiro, 2009.
William J.G. Implement Russian aluminum drill pipe and retractable drilling bits into the USA, 1999, 230 p.
Mike Mims, Tony Krepp. Drilling Design and Implementation for Extended Reach and Complex Wells // K&M Technology Group, LLC.: Houston, Texas, 2007. -320 p.
Standard API 7G Recommended practice for drill stem design and operating limits / American Petroleum Institute / 1998. -157 p.
Legarth B. J., Lehner H.O. Changing the game from steel to aluminum drill pipe: results from full string aluminum alloy drill pipe deployment to enhance extended reach drilling performance. SPE/IADC 173088-MS/, 2015.
Lehner J.K., Evans P., Alcoa Oil & Gas. Successful use of mixed aluminum-steel drill pipe string in complex horizontal wells: case study S. SPE-170255-MS, Penn Virginia, 2014
Lehner J. K., Alcoa Oil & Gas, Nigel E and Aaron P. Nabors. Successful Use of Aluminum Drill Pipe with Steerable Mud Motors: Case Study in Shale Plays S. SPE/IADC-173165-MS, Penn Virginia, 2015.
Scaruffi W., Cristofanelli E., S.Yu., A.Trocchia. New Generation of Aluminum Drill Pipes Enhanced the ERD Performances in to the Huizhou Field South China Sea. IPTC 16798, SpA - E&P Div, 2013.
Basovich V., Buyanovskiy М. Perspektivy primeneniya alyuminievykh buril'nykh trub pri burenii gorizontal'nykh skvazhin bol'shoy protyazhennosti [Perspectives for Application of Aluminum Drill Pipes for Drilling of Long Horizontal Wells], Burenie i neft', No. 6, 2015.
Sapunzhi V. Effektivnost' primeneniya alyuminievykh buril'nykh trub pri burenii skvazhin na neft' i gaz [Efficiency of Application of Aluminum Drill Pipes for Drilling of Oil and Gas Wells], Burenie i neft', No. 6, 2012.
R.A. Bacallao, Student of drilling oil and gas wells Department, Ufa State Petroleum Technical University, Ufa, Republic of Bashkortostan, Russian Federation
R.A. Bacallao, R.A. Ismakov Modelirovanie raboty buril'nyh kolonn dlya bureniya skvazhin s bol'shimi othodami ot vertikali na mestorozhdenii Varadero (Respublika Kuba) [Modeling of drill string work for drilling extended reach wells at Varadero field (Republic of Cuba)]. Neftyanaya Provintsiya, No. 1(21), 2020. pp. 29-43. DOI https://doi.org/10.25689/NP.2020.1.29-43 (in Russian)