STUDY OF THE APPLICATION FEATURES OF ORIENTED BHAS WHILE DRILLING DIRECTIONAL WELLS
The article presents a scientific and practical approach for assessing the energy efficiency of oriented bottom hole assembly on the basis of mud motor. The main constructive feature of these assemblies is the presence of a bent angle in the bearing section of the mud motor. The conditions of operation of such assemblies are considered for a combined drilling method with a different number of stabilizers. Particular attention is paid to determining the causes of unproductive energy consumption for the work of oriented assemblies in the borehole.
The mathematical model improved by the authors includes the geometric features of the construction of the assemblies, the bent angle on the bearing section of the motor to its body, the number of the stabilizers and the location of their installation, the borehole inclination, the physical and mechanical characteristics of the formation that forms it. Using these parameters, the calculation of the energy consumption for rotation and the axial displacement of the assemblies in the directional well was calculated based on the data of the deflection forces on the bit and the reaction on the stabilizers. According to these parameters, it is proposed to use the indicator of specific energy costs to overcome the forces and moments of the resistance of the environment during the drilling with oriented assemblies in the combined drilling method.
According to the results of analytical research on the example of slick assemblies, as well as assemblies with one-and two-stabilizers, using the developed approach, the research of energy costs on the work of oriented assemblies with a different number of the stabilizers was conducted. It is established that oriented assemblies with two stabilizers are characterized by the highest values of the forces of resistance of axial displacement and rotation in the directional well, and also are the most energy-intensive systems in general. This limits their practical use as high-power, energy-consuming systems. The main factors in the formation of energy costs for the work of oriented assemblies in the combined drilling method are the number of the stabilizers and inclination range.
Gilyazov R.M., Burenie neftyany`kh i gazovy`kh skvazhin s bokovy`mi stvolami. M.: OOO «Nedra-Biznesczentr», 2002. 253 р.
Grechin E. G. Razrabotka i issledovanie metodov proektirovaniya i raboty` neorientiruemy`kh komponovok niza buril`noj kolonny`: avtoref. dis. na soisk. nauch. st. d-ra tekhnicheskikh nauk: specz. 25.00.15. “Tekhnologiya bureniya i osvoeniya skvazhin” /
E. G. Grechin, Tyumen`: Tyumenskij gosudarstvenny`j neftegazovy`j universitet. Tyumen`, 2009. 47 р.
Ofitsiinyi sait kompanii «National Oilwell Varco» (NOV), obladnannia Proshot: https://www.nov.com/Segments/Wellbore_Technologies/ReedHycalog/Directional_Measurment_and_Steerable_Technologies/Directional_Systems/Teledrift_ProShot.aspx.
Griguleczkij V. G. Proektirovanie komponovok nizhnej chasti buril`noj kolonny` [Tekst] / V. G. Griguleczkij, V. T. Luk`yanov. M.: Nedra, 1990. 304 р.
Chudyk I. I. Vrakhuvannia kaverno- i zholoboutvorennia pry proektuvanni neoriientovanykh KNBK [Tekst] / I. I. Chudyk,
A. A. Yurych, A. A. Kozlov // Prospecting and Development of Oil and Gas Fields. 2007.
No 2(23). pp. 45-50.
Chudyk I. I. Generalized method of calculating energy expenditure at work undirected bottom of the drill string configurations for rotary drilling method [Tekst] / I. I. Chudyk // Scientific Bulletin of Ivano-Frankivsk National Technical University of Oil and Gas. 2013. No 2(35).
Chudyk I. I. Vplyv kryvyzny stovbura sverdlovyny na statychni formy rivnovahy neoriientovanykh KNBK / I. I. Chudyk,
A. A. Kozlov // Scientific Bulletin of Ivano-Frankivsk National Technical University of Oil and Gas. 2006. No 1(13). pp. 50-54.
Chudyk I. I. Udoskonalennia metodyky rozrakhunku syl prytyskannia opor neoriientovanykh KNBK do stinok sverdlovyny [Tekst] / I. I. Chudyk // Prospecting and Development of Oil and Gas Fields. 2008. No 3(28).
Chudyk I.I. Enhancement of processing capabilities of oriented bottomhole assemblies /
I.I. Chudyk, A.M. Livinskyi, I. Ya. Biletska//
Scientific Bulletin of Ivano-Frankivsk National Technical University of Oil and Gas. 2017.
No 2(43). pp. 26-32.
Chudyk I.I. The study of the engineering capabilities of supported oriented bottom hole
assemblies / I.I. Chudyk, A.M. Livinskyi //
Prospecting and Development of Oil and Gas Fields. 2017. No 3(64). pp. 31-39.