Current Status Of The Duri Steamflood Project Sumatra, Indonesia

Abstract

The Duri Steamflood (DSF) Project is the largest thermal enhanced oil recovery (EOR) project in the world, surpassing in production both the Kern River and Belridge Fields in the San Joaquin valley of California. The field is located in Riau Province, on the island of Sumatra, in Indonesia. Duri is the second largest field in the country, producing nearly 200,000 BOPD of steamflood production. The field is operated and developed by P.T. Caltex Pacific Indonesia (CPI), a production sharing contractor to Pertamina, the Indonesian national oil company. The DSF Project will develop over 15,000 acres of reservoir utilizing over 4,000 producing wells. At present, only about one third of the field is under active steamflood. The DSF Project is divided into twelve development units called Areas. New Areas are about 1,400 acres in size, and are developed, that is, drilled and put on injection, in about 1-3/4 to two years. The steamflood development involves the use of symmetric patterns of varying size and configuration. Inverted seven spots, approximately 11-5/8 acres in size have been the principal pattern configuration for Area development, including the Area currently being drilled [1]*. For future Areas, inverted five and nine spots, approximately 15-1/2 acres in size are planned. This change has been implemented as a result of detailed reservoir simulation studies conducted in CPI [2,3]. The Duri Steamflood Project is unique in that it simultaneously involves the management of existing steamflood Areas, the development of new steamflood Areas, and the design of future Areas to maximize both oil recovery and production efficiency. The balancing of these three objectives is both a complex and vitally important project management task. The approach taken by CPI is a multi-disciplinary one involving development geology, petroleum engineering, and surface facility engineering. Improvements in well stimulation techniques, well completions, flood monitoring and flood design have been realized.

Feasibility study and numerical simulation to design the steam flooding pilot test patterns

“…The steam flooding pilot has been implemented in September 2015, and the results encourage to go for the second steam flooding pilot in this field in order to get full picture of full-field implementation as given in Table 2. Table 1 Reservoir properties of each oil field using steam flooding (Elbaloula et al 2016;Pearce and Megginson 1991;Jones et al 1995;Taber et al 1997 Well pattern Anti-9 Anti-9 Anti-5 Anti-9 Anti-5 SF period recovery (%) 20.9-37.4 23.4 37 Study > 20…”

Tubing Strength Evaluation and Failure Assessment for Reactivation of Well PDD-2 as Steam Injector Well

“…One of the biggest steam flood application in the world is currently being implemented in Duri Steam Flood (DSF) Project in Indonesia, where it was implemented on almost 4000 wells with the peak production rate of 200,000 BOPD (Winderasta, et al, 2018). Several notable challenges during the implementation of steam flood are significant thermal effects on the tubular goods, steam condensation in producer wells, as well as calcium carbonate scale and gravel pack damage (Pearce & Megginson, 1991).…”

Evaluation of Steam-Injection Designs for the Duri Steamflood Project

“…The steamflood pilot was successful in recovering almost 30 percent OOIP during the test period and lead to the initiation of the current OSF Project [1]. (A schematic of the steamflooding proc~ss is included as Figure 5.)…”

“…Although not a part of this investigation, extensive work has been carried out in DSF on surface quality distribution [1]. Generally, quality ranges from 60 to 75 percent across the field.…”

“…Inverted seven spots, approximately 11 5/8 acres in size, have been the *References and figures at end of paper 459 principal pattern configuration for Area development thus far, including the Area currently being drilled [1]*. For future Areas, inverted five and nine spots, approximately 15 1/2 acres in size, are planned.…”