Dual openhole gravel pack in shaly fine sands
Journal Article
·
· SPE Drilling and Completion
This paper discusses the design and execution of dual-zone gravel packs in very shaly and silty formations of median sand grain size less than 30 {micro}m. An oversized gravel was selected for sand control and, as a consequence, the openhole gravel-pack technique was adopted to reduce the effect of intermixing between formation and gravel-pack sand. During the completions in the first five wells, the authors encountered and solved several operational problems, including those involving (1) borehole stability, (2) setting of inflatable packer for zone isolation, (3) hole preparation, and (4) gravel placement. From the lessons they learned, another 11 wells were completed with dual openhole gravel packs without significant problems. After 1 year of production, the flow performance from the wells met or exceeded the initial objectives.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 205525
- Journal Information:
- SPE Drilling and Completion, Journal Name: SPE Drilling and Completion Journal Issue: 4 Vol. 10; ISSN 1064-6671; ISSN SDCOE5
- Country of Publication:
- United States
- Language:
- English
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