Discussion on Setting Casing Shoe near the Bottom of Hole

In this paper, the advantage of setting casing shoe near the bottom of hole is introduced. This technique can improve cementing quality and avoid borehole wall collapsed during drilling. In addition, the technical requirements for setting casing shoe near the bottom of hole have been put forward in order to assure high quality wellbore, cleaned up of bottom hole, casing centralized, and the length of casing string is the same as borehole depth. Setting casing shoe near the bottom of hole has been applied successfully in Well Chengbeigu A, and the results indicated that BHA optimization, good mud property, wiper trip for running casing and making casing centralized are effective measurements for setting casing shoe near the bottom of hole.