DEVELOPING METHODS FOR PLACING SAND-PROPPED …
Run an HQ-size bit on the end of a drill string into the hole while rotating the bit and flushing with water. This cleaning operation ensured the hole was at least 96 mm in diameter and removed debris that may have collected in the hole since drilling. Run the casing string into the hole. A casing shoe valve was installed on the first length of casing run to act as a check valve – allowing ... ................
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