Completion Design, Installation, and Performance—Cannonball Field, Offshore Trinidad

Healy, John; Powers, J.T.; Maharaj, Matthew; Ramlogan, Marsha

doi:10.2118/110524-ms

Cited by 9 publications

(2 citation statements)

References 6 publications

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“…The primary scope of the study was to review existing developments to understand field proven designs. The study focused on a global review 2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 of ultra high-rate gas wells which included nine (9) areas and over 130 wells ( Figure 6). This study, combined with the experiential knowledge of the team, resulted in a design that integrated the field proven lower completion (sandface) design of the OHGP (Figure 7) as demonstrated in Trinidad (Amherstia, Mahogany, Kapok, and Cannonball) and Ormen Lange 17 with a simplified deepwater upper completion design.…”

Section: Right Designmentioning

confidence: 99%

Design, Installation, and Initial Performance of Ultra-High-Rate Gas Deepwater Completions - Tamar Field, Offshore Israel

Healy¹,

Sanford²,

Dufrene

et al. 2013

Day 3 Wed, October 02, 2013

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A case history from Offshore Israel is presented that describes the successful delivery of five (5) ultra high-rate gas wells (+250 MMscf/D) completed in a significant (10 TCF) gas field with 7 in. production tubing and an Open-Hole Gravel Pack (OHGP). Maximizing gas off-take rates from a gas reservoir with high flow capacity (kh) requires large internal diameter (ID) tubing coupled with efficient sand face completions. When sand control is required, the OHGP offers the most efficient as well as the most reliable, long-term track record of performance. A global study of ultra high-rate gas wells was made to select and finalize the design concept after which the commensurate engineering rigor was applied. This paper will highlight key accomplishments within various phases of a completion delivery process for critical wells. The completions were installed with minimal operational issues (Average NPT 4%). Production commenced on March 31, 2013 without incident thus far. Each well is designed for production rates in excees of 250 MMscf/D. SPE 166368 Project Statement of RequirementsGeneral. The Tamar field is the only local source of natural gas to Israel, a country with a total population of ~7.9 million people. With five (5) wells producing from the Tamar field, each well is required to provide gas to ~1.6 million people, roughly the population of the U.S. state of Hawaii. With so many people depending on each Tamar well, delivering wells with the highest reliability and longevity became the key goal of the basis of design and all subsequent decision making. Phase I of the Tamar project was designed for a maximum flow rate through the subsea system and the platform of 1200 MMscf/D. To meet this flow rate, five (5) wells capable of producing 250 MMscf/D each were required with the completions to be finished by year end 2012. To ensure the wells were cleaned up and had the necessary productivity to meet Phase I deliverables, it was required to unload and produce the wells up to 120 MMscf/D to the drilling rig immediately following the completion.Key Project Deliverables. Drill and complete five (5) wells each capable of safely and reliably producing gas at rates of up to +250 MMscf/D for 25 years. Completion Guiding PrinciplesA set of completion key performance indicators (Table 1) and guiding principles ( Table 2) were developed to guide the decision making process for the completion design. These principles were largely based on learnings from other successful high-rate gas well developments and the key project deliverables defined above.

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Section: Right Designmentioning

confidence: 99%

Design, Installation, and Initial Performance of Ultra-High-Rate Gas Deepwater Completions - Tamar Field, Offshore Israel

Healy¹,

Sanford²,

Dufrene

et al. 2013

Day 3 Wed, October 02, 2013

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“…The Cannonball field was brought on production at a sustained rate in excess of 800 MMcf/D. A previous paper (Healy et al 2007) presented a detailed review of the design, engineering assurance, installation, and performance of the Cannonball completions.…”

Section: Introductionmentioning

confidence: 99%

Erosion Study for a 400-MMcf/D Completion: Cannonball Field, Offshore Trinidad

Healy¹,

Martin²,

McLaury

et al. 2010

SPE Drilling &Amp; Completion

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The Cannonball field is a 1 Tcf gas/condensate development offshore Trinidad producing at a sustained rate in excess of 800 MMcf/D from three wells. The completion design selected was 7 5 ⁄8in. production tubing with an openhole gravel pack. The initial well (CAN01) has produced at 333 MMcf/D. These rates are higher than typically experienced, which has raised concerns about the resultant potential for metal erosion. As a result, a rigorous erosion study was initiated. The objective was to evaluate erosion quantitatively at various rates over the life cycle of the well to design the completion appropriately and select the appropriate materials.The erosion nodes within the completion-changes in flow direction (e.g., a tee such as in the wellhead) and/or flow constrictions-were identified as the tree, a landing-nipple profile near the surface, and a formation-isolation device (FID) positioned in the gravel-pack assembly. The key parameters were defined as particles of sharp sand, with a diameter of 50 m, at a concentration of 0.1 lbm/MMcf. Erosion rates were calculated using the erosion model, Sand Production Pipe Saver (SPPS), developed by the Erosion/Corrosion Research Center (E/CRC) at the University of Tulsa, USA. Erosion rates were calculated over the life cycle, starting at initial rates of 280 and 400 MMcf/D. Erosion rates were also calculated with and without a liquid film (a protective layer on the pipe wall that can reduce the erosion rate). Erosion results (without a liquid film) at all nodes exceeded BP's erosion limit; however, the erosion results with a thin liquid film were mostly below the company's erosion limit. Determination of the presence and thickness of the liquid film was critical. A multiphasepipeline simulation calculated that a sufficient liquid film would exist at all critical areas. Erosion of the tree was assessed further by computation-fluid-dynamics (CFD) models, which identified several hot spots; thus, additional cladding of all flow-wetted surfaces and rounding of the outlet corner was required. The Cannonball completion design, including the tree, was determined to be capable of sustained rates up to a maximum of 400 MMcf/D. The three-well development, where initial rates have been as high as 333 MMcf/D, has been on production for several years without any erosion issues.

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Chapter 8 Material Selection

Bellarby¹

2009

Developments in Petroleum Science

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Completion Design, Installation, and Performance—Cannonball Field, Offshore Trinidad

Cited by 9 publications

References 6 publications

Design, Installation, and Initial Performance of Ultra-High-Rate Gas Deepwater Completions - Tamar Field, Offshore Israel

Design, Installation, and Initial Performance of Ultra-High-Rate Gas Deepwater Completions - Tamar Field, Offshore Israel

Erosion Study for a 400-MMcf/D Completion: Cannonball Field, Offshore Trinidad

Chapter 8 Material Selection

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