Oil well compressive strength analysis from sonic log; A case study

Hamdi, Z. and Momeni, M.S. and Meyghani, B. and Zivar, D. and Chung, B.Y. and Bataee, M. and Asadian, M.A. (2019) Oil well compressive strength analysis from sonic log; A case study. In: UNSPECIFIED.

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Abstract

Appropriate selection of bits for different bore-hole sections is the key to achieve superior drilling performance. This is done with the intention to maximize the rate of penetration while maintaining bit integrity and drilling safety, which plays an important role in maintaining well economies. An accurate selection of drilling bit is dependent on the physical characteristics of formation and the compressive strength of rocks. The acquisition of rock strength along the wellbore can be obtained from various sources such as logs, cutting and rock mechanical test or drilling data. This paper posed a trial to obtain compressive strength profile of oilfield's formation from a sonic log. According to the results, the formations have been divided into several groups from very soft to very hard formation to optimize bit selection. The acquisition of rock strength information in different conditions is made possible by the generation of similar rock strength logs by different sources. Nevertheless, the best prediction will be given by meter-by-meter based logs from different references. Hence, log based or drilling based methods remains the most preferred methods used to obtain rock strength logs. In this paper, it is desired to predict the compressive strength of wellbore by using empirical correlation based on well logging data and then investigate the confidence of results by data obtained from drilling data. Later, this method is used to predict uniaxial compressive strength in the entire of oilfield. © Published under licence by IOP Publishing Ltd.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Impact Factor: cited By 1
Uncontrolled Keywords: Acoustic logging; Boreholes; Compressive strength; Forecasting; Infill drilling; Oil field equipment; Oil fields; Oil wells; Rocks, Drilling performance; Empirical correlations; Hard formation; Physical characteristics; Rate of penetration; Rock strength; Uniaxial compressive strength; Well logging data, Oil well logging
Depositing User: Ms Sharifah Fahimah Saiyed Yeop
Date Deposited: 19 Aug 2021 08:08
Last Modified: 19 Aug 2021 08:08
URI: http://scholars.utp.edu.my/id/eprint/23673

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