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Chin, Pui Ling (Schlumberger) | Moses, Nicholas (Schlumberger) | B Ahmad Mahdzan, Abdil Adzeem (Petronas) | Abu Bakar, Azfar Israa (Petronas) | B. M. Nor, M. Abshar (Petronas) | Bin Mohd Aziss, Muhammad Yusof (Petronas) | A. Rashid, Noor Hidayah (Petronas) | Bela, Sunanda Magna (Petronas) | W. Hasan, W. Helmi (Petronas) | A. Kadir, Zairi (Petronas) | Kamarudzaman, Zayful Hasrin (Petronas) | Hashim, Saharul (Halliburton) | Shahabuddin, Syukri (Halliburton)
Abstract A multizone cased hole completion with a bottom hole assembly of world-record length at 2,600 ft was installed in Malaysia in November 2019 where three zones were simultaneously gravel packed in a single trip utilizing shunt tube technology. This sand control completion was successfully executed with a combination of sand control pumping and sand control tools, unconventionally performed by two different service providers. The well consisted of three zones of interest approximately 1,000 ft apart. The bottomhole assembly was designed with two shunted cup packers for zonal isolation and shunted 12-gauge wire wrapped screens across each perforation. The shunts were left open ended below the cup packers, allowing the carrier fluid to exit the zone below with minimal friction. Downhole memory gauges were deployed along the washpipes for post job evaluation. Diligent lab testing was performed to select the carrier fluid, a clarified high-grade xanthan polymer with good 20/40 proppant suspension with less formation damage and acceptable dehydration to avoid bridging inside the shunts. Detailed risk assessment that was performed during the planning stage focusing on interfaces, equipment limitations, expediting, and decision flow charts between the two service providers led to flawless execution at the wellsite. Compared with conventional stack-pack completion, significant time savings of approximately seven days was observed with this single-trip design; the concept of open-ended shunts below the cup packers replaced the majority of the shunted blank pipes with standard blank pipes, eliminating the time required to install jumper tubes. Good results were observed during the injectivity test in addition to the well already having losses of 20 bbl/h. Hence, no acidizing was required prior to the gravel-packing operation. Based on surface monitoring, there was clear indication of sequential packing from the top zone to the bottom-most zone via shunt tubes, followed by a final screenout. Findings were further verified after performing the downhole bottomhole gauge analysis using the retrieved data from the memory gauges. The well has been in production since December 2019.
Clarkson, Brad A. (Halliburton Co.) | Grigsby, Tommy F. (Halliburton Co.) | Ross, Colby Munro (Halliburton Energy Services Group) | Sevadjian, Emile | Techentien, Bruce Wallace (Halliburton Energy Services Group)
Abstract In the 1980s, economic conditions in the oilfield were demanding improvements in economic and completion efficiency, and all phases of the industry were requiring that strategies to improve cost be revisited. Sand-control completion methodologies were no exception; they were no longer capable of meeting the economic and completion-efficiency required to complete the long stacked intervals being attempted. To address this problem, a single-trip multiple-zone gravel-pack system was developed. The concept was successful for the targeted formations, but as with all new technologies, certain shortcomings concerning rathole intervals, complexity of the systems, and longer, more deviated wellbores prevented its use in all types of reservoir scenarios. An improved version that was introduced in the early 1990's attempted to address these shortcomings. This system was successfully deployed and is still being run in the Far East today. However, limitations that were still experienced with the single-trip multiple-zone systems have prevented their wide spread adoption, causing them to remain a niche completion technique predominately used in the Far East and Italy. Industrial drivers for deepwater development have again caused operating companies to revisit the viability of multiple zone systems. Once considered too complex and risky for offshore operations; the development of the ultra deepwater lower tertiary play in the Gulf-of-Mexico has provided the impetus for renewed interest in multi-zone concepts. This interest has been driving the development of the latest generation of the cased-hole multiple-zone system as well as an openhole multiple zone frac-pack-compatible completion system. The intent of this paper is to chronicle the development of cased-hole single-trip multiple-zone completion systems with a focus on the latest generation of these systems ? the systems developed for deepwater applications. The paper will also discuss why previous systems have not proliferated globally to become an accepted mainstream sand-face completion technique. The improved functionality of the newest system will be described and compared to the previous generation of systems. The integration testing to qualify the new multiple zone system is included in the discussions. Several installations have been planned, and the case histories will be included if available by paper time. Single Trip Multiple Zone Development Chronology Generation I. The initial impetus for the development of the single-trip multiple-zone gravel-pack system was the development of the Beta Field, which is located in Federal acreage, nine miles offshore Huntington Beach California 1. The development includes two producing platforms (Ellen and Eureka) and one facility platform (Elly).2 First production commenced from the Ellen platform in January 1981. The productive interval was composed of as many as nine separate zones with a gross vertical thickness of 1200 feet divided by a number of fault blocks. The reservoir rock consists of unconsolidated sand containing heavy oil with gravities ranging from 11º to 19º API. A considerable number of wells had deviations of up to 75º and hole-angle buildups of six degrees per 100 feet. Wells with the longest kick had a measured depth in excess of 10,000 feet. Curved conductors were used on wells with the highest deviation. The wells were completed with electric submersible pumps, requiring that production be virtually sand free.
Abstract The Gulf of Mexico hydrocarbon potential has confounded "naysayers," who once called it the Dead Sea. The planned development of the ultra deepwater lower-tertiary play is the latest chapter in the Gulf of Mexico's ongoing viability as a major hydrocarbon basin. To economically develop this challenging lower-tertiary play requires new completion technology to handle the long, stacked pay intervals. This has generated renewed interest in multi-zone completion technology. This technology is viewed as a method that hs the potential to increase completion efficiency as well as reduce overall completion cost. These systems were once considered too complex and risky for deepwater operations; but the hope that the technology could provide increased completion efficiency and alleviate some of the issues inherent with stacked completions in deepwater has again renewed interest in pursuing this technology. Thus, the latest generation of robust, cased-hole single-trip multiple-zone frac-pack completion systems has been developed. The renewed interest for development of these systems has also been the driving force for development of an openhole multiple-zone frac-pack completion system that could ultimately provide reductions in well construction cost. This paper will provide the reader with a brief development history of cased-hole, single-trip multiple-zone completion systems and then the focus will shift to the latest generation of tool systems. The discussion will also include the reasons why the previous systems have not proliferated globally as an accepted mainstream sand-face completion technique. The sand face is one part of the completion equation. The methodology of integrating the uphole completions to the multizone sand-face completion will be briefly discussed. The improved functionality of the newest multizone systems will be described and compared to the previous-generation systems. The presentation will cover the integration testing to qualify the newest multiple-zone system and will cover trial well installations. Deepwater case histories will be presented, if available by presentation time.
Aripin, Izura (PETRONAS Carigali Sdn Bhd) | Faisalluddin, Teuku (PETRONAS Carigali Sdn Bhd) | Allapitchai, M Shahril Majid (PETRONAS Carigali Sdn Bhd) | Hamidy, Hudzaifah Zol (Halliburton Energy Services) | Ghazali, Ikmal Hakim (Halliburton Energy Services) | Ab Latif, Ahmad Syauki (Halliburton Energy Services) | Govinathan, Kesavan (Halliburton Energy Services) | Priatna, Oktaf (Halliburton Energy Services)
Abstract This paper presents a case history in which a single-trip multizone sand control system was successfully deployed in Malaysia using a hydraulic workover (HWO) unit. The well consists of two (2) zones which were both treated and completed in a single-trip gravel pack system. This paper discusses in detail the design selection and operation, which includes the challenges faced and mitigation to overcome the challenges. All operations involved were completed with a significant time and operational cost saving to the operator. This was the first successful single-trip multizone installation using HWO globally. The sustained prolific oil production from this well affirms the success of the completion and gravel pack treatment method. These positive results highlight the importance of operator technical/operations personnel and service providers working as a team to develop the most appropriate solutions to the technical and operational challenges encountered.
Fourie, Bernard (Brunei Shell Petroleum Co. Sdn. Bhd.) | Marpaung, Billman (Brunei Shell Petroleum Co. Sdn. Bhd.) | Jansen, Rene (Brunei Shell Petroleum Co. Sdn. Bhd.) | Wong, Andrew (Halliburton) | Mok, David (Halliburton Energy Services Sdn. Bhd.)
Abstract Brunei Shell Petroleum (BSP) operates the mature South West Ampa (SWA) and Bugan Fields in Brunei Darussalam. The fields, located 10 to 21 kilometers offshore Brunei in water depths ranging from 10 to 40m, are major sources of oil and gas production. Controlling sand production is a key completion challenge as the reservoirs are composed of multilayer unconsolidated sands, requiring sand control for safe production. Cased-hole, stack-pack systems were considered as the default solution for shallow reservoir zones and wells. Dueto the reduced production rates in some reservoirs in the fields and increasingrig costs there is a demand to improve the cased-hole gravel pack efficiency. The wells require zonal isolation and sand-control treatment. Cased-hole stack packs have been a reliable completion method, due to their capabilities for better zonal isolation and multi-zone functionality. Due to the reduced production rates in the mature fields, however, wells were no longer considered economically feasible. Therefore, BSP decided to try a new 9-5/8-in. enhanced single trip multi zone gravel pack system. This system appeared capable of providing significantly greater cost efficiency than conventional cased-hole stack-pack systems, which would make the marginal wells profitable. This paper describes the 3 wells completed by BSP in 2010 and 2011 using the enhanced single trip multi zone gravel pack system. For the 3 wells, a total of10 zones required a sand control treatment. The paper also will describe why the enhanced single trip multi zone gravel pack system was chosen and will discuss the wellbore configuration, the implementation, and other field possibilities for the system. Finally, the paper will discuss the "bestpractices" learned from the first enhanced single trip multi zone gravel pack system installations; the challenges encountered during the job execution, and also, will compare the enhanced single trip multi zone gravel pack system with the conventional cased-hole stack-pack system to highlight the advantages of the new system.