Holding the core in the core barrel for as long as required

Many varieties of core catchers are offered. The standard core catcher is a split spring housed on a tapered shoe. As the relative motion of the core occurs, the spring slides down the taper and closes, thereby reducing its ID and tightening on the core. It is too large to pass through the bottom of the housing and the continued upward movement starts to pull on the core which eventually breaks. A variation of this is the slip catcher. This operates on the same principle, but instead of a spring there are three or four small wedges that slide in their own groove. Both of these catchers work well in all formations including unconsolidated formations, although care must be taken on the tip out of hole. Also offered are dog catchers, finger baskets and flapper catchers. These are aimed at soft formations but can create more problems than they solve. Soft formation coring is a special problem which requires special care but can be successfully conducted using virtually standard equipment.

Project Management Made Easy

Project Management Made Easy

What you need to know about… Project Management Made Easy! Project management consists of more than just a large building project and can encompass small projects as well. No matter what the size of your project, you need to have some sort of project management. How you manage your project has everything to do with its outcome.

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