Optimization of perforated liner parameters in horizontal oil wells
- PDF / 1,841,721 Bytes
- 10 Pages / 595.276 x 790.866 pts Page_size
- 41 Downloads / 209 Views
ORIGINAL PAPER-PRODUCTION ENGINEERING
Optimization of perforated liner parameters in horizontal oil wells Milad Ebrahimi Dastgerdi1 · Abbas Khaksar Manshad2 · Amir H. Mohammadi1 Received: 10 April 2020 / Accepted: 30 June 2020 © The Author(s) 2020
Abstract Nowadays, horizontal wells play a vital role in the production from thin heavy oil reservoirs. Designing a suitable completion for this kind of reservoirs is a decisive factor to boost the efficiency of durable production. This study deals with the optimization of perforated liner design for horizontal wells in Sarvak oil reservoir, which is located in the southwest of Iran. Sarvak is a carbonate oil reservoir, but it contains shale and mudstone. To avoid solid production and formation collapse, the screen liner was selected as a cost-effective solution. There were two choices, either perforated liner or slotted liner. The perforated liner was selected by finite element analysis and strength checking, which was proven by laboratory experiments. Sensitivity analysis was performed on various perforated parameters such as phase angle, hole density, hole diameter and hole distribution to determine the pattern of the holes so that enough strength of the liner was maintained while maintaining the maximum hole density. Then, parameters of perforated liner were determined by calculated loss of the flowing path, collapse resistance strength and tensile strength of casing pipes after perforated. As a result, hole density, hole size and perforated pattern were selected 100 HPM, 10 mm and 4-thread-line, respectively, in 4 ½” liner with 13.5 ppf. The ratio of the strength of the optimized perforated liner was less than 8% for collapse and 5% for tensile compared to the same specification casing. Keywords Perforated liner · Slotted liner · Screen liner · Collapse analysis · Horizontal well · Optimization
Introduction Due to the strategic role of horizontal wells in the production from oil reservoirs, as well as significant advances in drilling technology and well completion, the use of these wells has increased more than before and choosing the method of economic completion with the right efficiency is an art. An efficient well completion method must be done, while maintaining the mechanical integrity of the borehole, without creating significant restrictions on production capacity, and it has to be economical (Furui et al. 2004). Choosing the right method for completion in horizontal wells in thin
* Abbas Khaksar Manshad [email protected] * Amir H. Mohammadi [email protected] 1
Discipline of Chemical Engineering, School of Engineering, University of KwaZulu-Natal, Howard College Campus, King George V Avenue, Durban 4041, South Africa
Department of Petroleum Engineering, Abadan Faculty of Petroleum Engineering, Petroleum University of Technology (PUT), Abadan, Iran
2
heavy oil reservoirs plays a vital role. Therefore, optimizing the completion in horizontal wells is of great importance. In designing the completion of horizontal wells in each field, in
Data Loading...
