Page 415 - Practical Well Planning and Drilling Manual

Section 3 revised 11/00/bc 1/17/01 12:00 PM Page 391

3.4.4
Casing [ ]

Single-stage casing and cementation: crew preparation check-
list. The following preparation work should be done in advance of
the casing job:

1. Make up and Baker-lock a PxP crossover under the casing hanger,
if a solid (mandrel) hanger is to be used. Make up the running tool
or landing joint on the hanger: measure the distance from RT to the
top of the wellhead spool and mark this distance on the landing
joint from the top of the hanger. Check the landing joint box for
damage and check that the thread matches the cement head.
2. Baker-lock the float shoe and float collar onto the bottom of two
joints after visually checking the float.
3. Number, measure, and inspect the casing. Produce running list for
distribution, once final depth known. See Figure 3-6.
4. Centralizers can be applied to the top row of casing on the rack. If
annular clearance and centralizer type permits, put spring central-
izers over a stop collar rather than between two; this reduces drags
and wellhead wear.
5. Drift all crossovers and pups that will form part of the casing
string.
6. Rig up cement return hoses from the wellhead side outlets, if a
solid hanger is to be used.
7. Have the emergency hanger (slip and seal) standing by, checked,
and ready to use.
8. Check carefully that slips are correctly dressed with the right num-
ber of segments and type of dies. The dies should be clean and
sharp. Slips dressed incorrectly could lead to injury or a damaged
or lost casing string.
9. Check that the safety clamp is correctly dressed, that the springs
behind the dies are all intact, and that the dies are properly moving
up and down. The number of segments should be correct and dies
in good shape.
10. Check that the spider slips and elevators are correctly dressed and
in good shape.
11. Check the side door and single joint elevators for correct size, rat-
ing, and good latch condition.
12. Ensure that chik sans and T-piece are ready on the drillfloor for the
cementing operation.

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