The following procedure should be used when making up a weight set tie-back packer with a 7in liner. 1. PICK UP weight set tie-back packer c/w setting sleeve and PBR 9.5/8in, 43.5-53.5 lbs/ft x 7in 23-32 lbs/ft L-80. 2. PICK UP liner running tool, type 2RH with PBR seal assembly 4.1/2 IF box up (installation … Weight Set Tie-Back Packer Make-Up
The following procedure should be used when cleaning out the PBR for setting a weight set tie-back packer with a 7in liner. 1. RIH combined lower, upper tie-back polish mills and casing scraper. 2. Position of packing element relative to top PBR when set must be established to ensurethat scraper will clean setting area if … Tie-Back Packers – PBR Clean Out and Packer Setting
The following is a procedure example for running and setting a weight set tie-back packer with a 7in liner. 1. Suspend tie-back packer in slips. Make up the running tool on a joint of drillpipe and stab into assembly. Rotate tool to engage lugs, then slack off and rotate the tool to the left 6-7 … Running and Setting Tie-Back Packer
A string of casing can be run at a later date after a liner has been installed and joined to it as long as the liner hanger assembly top (or weight set packer top, if it has been run) has been provided with a setting sleeve with tie-back extension (standard machined or PBR). Reasons to … Liner Tie-Back String
A casing patch can be required in the following situations: – the casing has to be set high before the casing hanger has landed, (well control requirements may dictate that an emergency slip cannot be set) – a leak has been found in a casing string. The following guidelines shall be used in the preparation … Casing Patches
After running the liner, the liner lap shall be tested to a value based on the FIT at the previous casing shoe. If the test is unsuccessful then the liner lap must be inflow tested, but if successful the draw down shall be confirmed. Inflow Testing Liner laps shall be inflow tested if any of … Liner Lap Testing – Inflow Testing
The test pressure and the justification for this pressure shall be clearly indicated in the testing programme. The casing string shall be tested to the lowest value as dictated by the following pressure: the casing/liner design pressure or 75% of the casing/liner burst the wellhead design pressure the working rating of the BOP cement head … Casing and Liner Pressure Testing
The objective of the casing design is to define a set of casing strings (casing scheme), capable of withstanding a variety of external and internal pressures, thermal loads and loads related to the self-weight of the casing. These casing strings are subjected to time-dependent corrosion, wear and possibly fatigue, which downrate their resistance to these … Casing design considerations
Conductor string is a string which is installed to cover unconsolidated formations, to seal off shallow water sands and to provide protection against shallow gas flows. The string is cemented to the surface or sea bed if possible, and is always the first string onto which one or more BOPs are installed. prevent poorly consolidated … Conductor string
It should be noted that the strengths require down rating to account for the effects of wear, corrosion and fatigue and for the effect of temperature on yield strength. The appearance of commercial casing analysis software has made triaxial stress analysis possible. The allowable value of the Von Mises equivalent stress is usually the yield … Load bearing capacity