Page 417 - Practical Well Planning and Drilling Manual
P. 417

Section 3 revised 11/00/bc  1/17/01  12:00 PM  Page 393








                                                                          Casing  [     ]
                                                                                  3.4.4


                       8. Load plugs and make up cement plug container on landing joint.
                           Connect chiksans to SPM and break circulation slowly. When
                           returns are seen, slowly increase pump rate to maximum ____
                           GPM, monitoring for losses. If there are losses, cut pump rate to
                           maximum no-loss rate. Circulate 120% of casing contents (____
                           bbls, ____ strokes).
                       9. Line up to cement pump. Cementer pump ____ bbls of water
                           ahead, close in at cement head, and pressure test lines to ____ psi.
                           Keep personnel clear of lines under pressure.
                       10. Proceed with cement job according to separate program.
                       11. Drop top plug, cementer pump ____ bbls of water behind. Switch
                           to rig pumps, displace at max. no-loss rate, slow down to ____ SPM
                           at ____ strokes, and bump plug at max ____ strokes (theoretical
                           plus 50% shoetrack). Test casing to ____ psi for 15 minutes. Bleed
                           off and check for backflow. If no backflow, rig down running gear,
                           back out landing joint, and prepare to nipple down. Otherwise
                           close in on cement head and wait on cement, meanwhile clear drill-
                           floor and prepare to nipple down.
                       12. Rig up and run gyrosurvey while hammering up BOP bolts after
                           installing wellhead spool.


                           Stinger casing and cementation crew preparation checklist.
                       Following is the preparation work to be done in advance of the casing job:

                       1. Bakerlock the float shoe onto the bottom of a joint after visually
                           checking the float and the stab in sealing surface.
                       2. Number, measure, and inspect the casing. Produce running list for
                           distribution once final depth is known.
                       3. 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. (See Fig. 3-6.)
                       4. Drift all crossovers and pups that will form part of the casing string.
                       5. Carefully check that slips are correctly dressed with the right num-
                           ber of segments and type of dies and that the dies are not mixed with
                           incorrect ones. The dies should be clean and sharp. Slips dressed
                           incorrectly could lead to injury or a damaged or lost casing string.
                       6. Check that the safety clamp is correctly dressed, the springs behind


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