Abstract
When the core barrel containing the core column reaches the surface, the inner tube should be safely handled so that the contained core undergoes the least damage (inferred from Skopec 1992, 1994; Hettema et al. 2002; Shafer 2013; Owens and Evans 2013). To achieve this, in the beginning, a systematic and careful planning is a requirement, which also involves selection of the proper tools in the core barrel (such as disposable inner tubes, NRITS) and the surface handling tools. Next, the proper communication between all the involved, already-trained personnel is required to guarantee the success of the operation.
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Notes
- 1.
Examples of core barrel sizes are: 3 ½ * 1 ¾, 4 1/8 * 2 1/8, 4 ¾ * 2 5/8, 5 ¾ * 3 1/3, 6 ¼ * 4, 6 ¾ * 4, 7 5/8 * 5 ¼. It is noted that the first number is the OD of the outer tube and the second is the ID of the inner tube.
- 2.
The surface gamma logging service was developed after the 1980s and is still popular. It is used prior to stabilizing and preserving the core in order to obtain reservoir data particularly for quick identification of pay zones.
- 3.
Liners can be also fiberglass or PVC, but aluminum liners are less prone to flex than their equivalents (Hettema et al. 2002).
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Ashena, R., Thonhauser, G. (2018). Core Handling. In: Coring Methods and Systems. Springer, Cham. https://doi.org/10.1007/978-3-319-77733-7_14
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