«Onshore and offshore oil and gas well construction»

Assurance of loading uniformity of supports bearings and cutting structures of rolling-cutter drill bits

UDC: 622.24.051
DOI: 10.33285/0130-3872-2022-9(357)-14-19

Authors:

¹ Ural Federal University named after the first President of Russia B.N. Yeltsin, Yekaterinburg, Russia
² RAEN, Moscow, Russia
³ Russian State Geological Prospecting University named after Sergo Ordzhonikidze, Moscow, Russia

Keywords: rolling-cutter drill bit, support, bearing, drill bit cutting-structures, drilling, rolling-cutter teeth rows, rack

Annotation:

The article discusses the features of loading the supports bearings of the rolling-cutters drill bits, taking into account the cutting structures location along the conesrow. It is known that the force P on the rolling-cutter tooth increases and reaches its maximum value at the interaction angle φe, which is accepted as the main characteristic of the cutting structures element interaction with the rock. To link this angle with the cone design, the φe value is divided by the angular step θ, i. e. the relative value φ0 is accepted. To determine the dependence of φ0 on the factors determining it, a fractional-factorial experiment was planned for implementation at the AI-4 facility. In accordance with the experimental plan, 25 experiments were carried out when drilling marble with die yield strength of 650 MPa. Each experiment was oscillographically recorded and 15...18 oscillograms of the force P were randomly taken for processing, according to which the average values of φ0 were determined. A total of 400 oscillograms were processed. To perform the design calculations, the article proposes a statistical method for determining the expected values of ij. The method is based on the results of the analysis of bench determinations of gear ratios determined by the number of rack teeth formed by each rolling-cutter tooth. The methods presented in the article served the basis of a new technical solution for the placement of cutting structures in the rolling-cutter teeth rows, which provides a significant increase in the uniformity of loading of the bearings of the rolling-cutter drill bits.

Bibliography:

1. Ishchuk A.G., Serikov D.Yu. Sharoshechnyy burovoy instrument. – M.: MDMprint, 2021. – 302 s.
2. Boreyko D.A., Serikov D.Yu., Bykov I.Yu. Analiz metodov diagnostiki tekhnicheskogo sostoyaniya sharoshechnykh burovykh dolot korpusnogo tipa // Oborudovanie i tekhnologii dlya neftegazovogo kompleksa. – 2021. – № 2(122). – S. 11–14. – DOI: 10.33285/1999-6934-2021-2(122)-11-14
3. Shigin A.O., Gilev A.V., Shigina A.A. Napryazheniya i stoykost' sharoshechnykh dolot pri burenii slozhnostrukturnykh massivov gornykh porod // Gornyy inform.-analit. byul. (nauch.-tekhn. zhurn.). – 2013. – № 4. – S. 325–333.
4. Bliznyukov V.Yu., Kalinina O.A. Sovershenstvovanie konstruktsiy porodorazrushayushchego burovogo instrumenta (PBI) i porodorazrushayushchego burovogo instrumenta so sfericheskimi i sferokonicheskimi sharoshkami dlya povysheniya kachestva formirovaniya stvola skvazhiny v protsesse bureniya i razrabotka metodologii vybora tekhniki i tekhnologii stroitel'stva skvazhin // Stroitel'stvo neftyanykh i gazovykh skvazhin na sushe i na more. – 2022. – № 8(356). – S. 5–16. – DOI: 10.33285/0130-3872-2022-8(356)-5-16
5. Olovyannyy A.G. Mekhanika gornykh porod. Modelirovanie razrusheniy. – SPb.: Izdat.-poligraf. kompaniya "Kosta", 2012. – 280 s.
6. Bikbulatov I.K., Blinkov O.G., Torgashov A.V. Opredelenie dinamicheskikh nagruzok na tverdosplavnye zubki sharoshek burovykh dolot // Problemy mashinostroeniya i avtomatizatsii. – 2000. – № 2. – S. 51–54.
7. Sposob eksperimental'nogo opredeleniya usiliy, deystvuyushchikh na vooruzhenie i opory sharoshechnogo dolota / V.A. Pyal'chenkov, D.V. Pyal'chenkov, V.V. Dolgushin [i dr.] // Neft. khoz-vo. – 2016. – № 8. – S. 112–115.
8. Loading of bearing retaining pin of tricone drill bit / D.I. Simisinov, A.I. Afanasiev, V.S. Shestakov, N.G. Valiev // Gornyi Zhurnal. – 2020. – No. 12. – P. 64–66. – DOI: 10.17580/gzh.2020.12.14
9. Issledovaniya vzaimodeystviya periferiynykh ventsov burovykh dolot s otritsatel'nym smeshcheniem osey sharoshek s zaboem i stenkoy skvazhiny / D.Yu. Serikov, D.N. Levitskiy, A.S. Kuznechikov, D.A. Boreyko // Stroitel'stvo neftyanykh i gazovykh skvazhin na sushe i na more. – 2022. – № 5(353). – S. 21–28. – DOI: 10.33285/0130-3872-2022-5(353)-21-28
10. Bogomolov R.M., Serikov D.Yu. Sovershenstvovanie vooruzheniya sharoshechnogo burovogo dolota // Oborudovanie i tekhnologii dlya neftegazovogo kompleksa. – 2018. – № 5. – S. 24–28. – DOI: 10.30713/1999-6934-2018-5-24-28
11. Shigin A.O. Sposoby povysheniya resursa sharoshechnykh dolot pri burenii slozhnostrukturnykh gornykh massivov // Gornyy inform.-analit. byul. (nauch.-tekhn. zhurn.). – 2015. – № 11. – S. 131–136.
12. Blinkov O.G. Povyshenie effektivnosti burovykh rabot na primere primeneniya burovykh sharoshechnykh dolot s frezerovannym vooruzheniem // Stroitel'stvo neftyanykh i gazovykh skvazhin na sushe i na more. – 2007. – № 4. – S. 26–27.
13. Serikov D.Yu., Smorkalov D.V. Sovershenstvovanie tsentral'nogo gidromonitornogo uzla trekhsharoshechnogo burovogo dolota // Territoriya Neftegaz. – 2014. – № 12. – S. 22–28.
14. Belokorovkin S.A., Ibatullin I.D. Naturnoe modelirovanie gidrodinamicheskikh davleniy, deystvuyushchikh na doloto // Oborudovanie i tekhnologii dlya neftegazovogo kompleksa. – 2017. – № 1. – S. 15–19.
15. Serikov D.Yu. Sovershenstvovanie bokovykh gidromonitornykh nasadok sharoshechnykh burovykh dolot // Oborudovanie i tekhnologii dlya neftegazovogo kompleksa. – 2017. – № 1. – S. 9–14.
16. Shigin A.O., Boreyko D.A., Serikov D.Yu. K voprosu o povyshenii effektivnosti razrusheniya gornykh porod sharoshechnymi dolotami // Territoriya Neftegaz. – 2022. – № 3-4. – S. 24–31.