PREDICTION OF PENETRATION RATE OF DRILLING BY USING THE ROCK ENGINEERING SYSTEM APPROACH, CASE STUDY: A WELL IN THE AZADEGAN OILFIELD

Rudarsko-geološko-naftni Zbornik

卷:36

Mehdi Noroozi¹  Hamidreza Saeedi²  Seyed-Mohamad Esmaeil Jalali²  Somayeh Behraftar³ 

[1] Faculty of Mining, Petroleum and Geophysics Engineering, Shahrood University of Technology, 7-tir sq., P.O.Box: 3619995161, Shahrood, Iran.;

[2] Faculty of Mining, Petroleum and Geophysics Engineering, Shahrood University of Technology, Shahrood, Iran.;

[3] School of Civil Engineering, University of Queensland, Australia.;

关键词: rate of penetration;    geomechanical properties;    rock engineering systems;    Azadegan oilfield;   

DOI  :  

来源: DOAJ

【 摘 要 】

One of the criteria in the operational efficiency of drilling is the rate of penetration of the drill bit. Numerous factors affect the rate of penetration. Identification of the effective factors on rate of penetration may lead to a more accurate assessment of drilling time, and as a result, the controlling of operational costs. The concurrent effect of the entire influential factors as well as the differing significance of each of them on the rate of penetration makes the study and optimization of drilling operations much more complicated and difficult. Using the rock engineering systems (RES), the impact of effective operational and geomechanical factors on the rate of penetration has been assessed in this article and a model has been proposed for the prediction of the rate of penetration. Data from one of the wells within the Azadegan oilfield have been used in order to study the impact of effective factors on the rate of penetration. To this end, the effective factors on rate of penetration are initially identified and then an index called “the rate of penetration index (ROPi)” is proposed through the application of the rock engineering systems approach. This index has been calculated at four different depths along the aforementioned well. The results suggested the compliance of penetration rate predictions with field observations. Moreover, porosity and uniaxial compressive strength are the most effective factors on the rate of penetration whereas the weight of drilling fluid has the smallest impact. Finally, a classification for the penetration rate index is presented.

【 授权许可】

Unknown