Single-Trip Completion Concept Replaces Multiple Packers and Sliding Sleeves in Selective Multi-Zone Production and Stimulation Operations

Coon, R. L.; Murray, Doug

doi:10.2523/29539-ms

Cited by 3 publications

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“…Completions for multiple fractured horizontal wells have been a constant issue since the technology became popular in the early 1990's. In the North Sea, several methods of perforating, stimulating, and isolating have been utilized to improve well completion efficiency and fracture stimulation placement [8][9][10][11][12] . Although effective, these completion techniques struggled to find an on-shore commercial market in tight and unconventional gas reservoirs [13][14][15][16] where more completions and fractures are desired per foot of lateral length.…”

Section: Introductionmentioning

confidence: 99%

Horizontal Well Completion, Stimulation Optimization, and Risk Mitigation

Britt¹,

Smith

2009

SPE Eastern Regional Meeting

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Horizontal wells have become the industry standard for unconventional and tight formation gas reservoirs. Because these reservoirs have poorer quality pay, it takes a good, well-planned completion and fracture stimulation(s) to make an economic well. Even in a sweet spot in the unconventional and tight gas reservoir, good completion and stimulation practices are required; otherwise, a marginal or uneconomic well will result. But what are good completion and stimulation practices in horizontal wells? What are the objectives of horizontal wells and how do we relate the completion and stimulation(s) to achieving these goals? How many completions/stimulations do we need for best well performance and/or economics? How do we maximize the value from horizontal wells? When should a horizontal well be drilled longitudinally or transverse? These are just a few questions to be addressed in the subsequent paragraphs. This paper focuses on some of the key elements of well completions and stimulation practices as they apply to horizontal wells. Optimization studies will be shown and used to highlight the importance of lateral length, number of fractures, interfracture distance, fracture half-length, and fracture conductivity. These results will be used to discuss the various completion choices such as cased and cemented, open hole with external casing packers, and open hole "pump and pray" techniques. This paper will also address key risks to horizontal wells and develop risk mitigation strategies so that project economics can be maximized. In addition, a field case study will be shown to illustrate the application of these design, optimization, and risk mitigation strategies for horizontal wells in tight and unconventional gas reservoirs. This work provides insight for the completion and stimulation design engineers by: 1. developing well performance and economic objectives for horizontal wells and highlighting the incremental benefits of various completion and stimulation strategies, 2. establishing well performance and economic based criteria for drilling longitudinal or transverse horizontal wells, 3. integrating the reservoir objectives and geomechanic limitations into a horizontal well completion and stimulation strategy, and 4. identifying horizontal well completion and stimulation risks and risk mitigation strategies for pre-horizontal well planning purposes.

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Section: Introductionmentioning

confidence: 99%

Horizontal Well Completion, Stimulation Optimization, and Risk Mitigation

Britt¹,

Smith

2009

SPE Eastern Regional Meeting

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60 Years of Multi-Fractured Vertical, Deviated and Horizontal Wells: What Have We Learned?

King

2014

SPE Annual Technical Conference and Exhibition

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Multiple fracture placements in single wells have a sixty year history with first applications soon after hydraulic fracturing was patented. Fracturing technology has been applied to offshore deviated wells, sand control wells, tight gas, coal, chalks, shales and conglomerates in turn as "conventional" reservoir limits were reached and each "new unconventional" reservoir was encountered. As fracturing technology was adapted to make an "unconventional" reservoir into a conventional reservoir, the adaptations and evolutions needed became part of the technology tool box waiting for the next challenge. Each innovation improved and stretched the reach of completions and production engineering as new findings were incorporated to monitor, model, optimize and extend the ranges of fracturing use for high and low temperatures, high stress formations and a variety of other challenges. This review looks at the development of multi-fractured wells from its first application in vertical wells where one well could now do the task of three wells, to the first modern application of highly multi-fractured horizontal wells used in chalks, shales and tight oil and gas reservoirs. The technical focus is on the learning procession covering details of casing wear, cyclic pressure application, isolation mechanisms, perforation placement, well spacing and fracture spacing. The technical literature and field learnings have both been searched for applicable information with a surprising variety of engineering application details brought forth that are useful in optimizing a single well or a whole development.

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Selective Production of Horizontal Openhole Completions Using ECP and Sliding Sleeve Technology

Constantine

1999

SPE Rocky Mountain Regional Meeting

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Single-Trip Completion Concept Replaces Multiple Packers and Sliding Sleeves in Selective Multi-Zone Production and Stimulation Operations

Cited by 3 publications

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Horizontal Well Completion, Stimulation Optimization, and Risk Mitigation

Horizontal Well Completion, Stimulation Optimization, and Risk Mitigation

60 Years of Multi-Fractured Vertical, Deviated and Horizontal Wells: What Have We Learned?

Selective Production of Horizontal Openhole Completions Using ECP and Sliding Sleeve Technology

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