This article describe the basics of external casing packers and the setting procedure. Basics of Operation ECP’s are inflation tools with expansion and sealing capabilities allowing a flexible elastomer element to pack off the annular space between casing or between casing and open hole. When inflated with either mud, cement or viscous fluid, the element … External Casing Packers
This article present friction factors for typical Casing Thread Compounds. Thread Compounds Friction Factors Bestolife 270 1.00 Houghton Stap Pb6 1.00 Houghton Joint No. 1 1.00 Jet/Lube Tef Kote 1.00 Jet-Lube API Modified 1.00 Jet-Lube Polar 1.00 Molykote HCS (M0S2) 1.00 Shell API Modified Compound 1.00 Shell France Modified Thread Compound 1.00 Shell Myrina S7715 … Casing Thread Compounds Friction Factors
The output of this process is a preliminary well configuration specifying the minimum casing diameter and the minimum casing-shoe setting depth for all strings. This serves as input for the detailed design phase. The casing diameter is mainly determined by the availability of downhole drilling equipment, logging tools and production requirements. The casing-shoe setting depth … Casing scheme selection
Early collection of all the relevant data is essential and it should be done by a multidisciplinary team. Considerable effort is required from the Petroleum Engineering and Operations departments when planning, designing and drilling/completing a well. Because of the high costs, the data set used for casing design must be as complete as possible right … Casing Design parameters
Preparation, planning and procedure for running 30″ conductor. Job Preparation Note: Well must be drilled to depth. Plan on top 30” conductor pipe being 1.285m down from top of cellar. Do not drill extra depth. Weld stab in float shoe to first joint. Ensure both cellar jet and submersible pump are working properly. While tripping … Procedure For Running 30” Conductor
Corrosion can pose a major threat to the installations whether above or below ground. With particular respect to casing, corrosion can impair the ability of the casing to perform its functions in two ways. Firstly, metal loss will reduce the wall thickness of the casing and hence its capacity to withstand the design loads. Secondly, … Influence of corrosion on casing strength
Expanding latch hanger mechanisms should recock when the string is picked up (if accidentally engaged in the BOP’s etc.). All liner tools should have OD profiles that do not catch or snag on the inside of conventional BOP’s, wellheads or casing connections. The flowby area on all hangers should be maximised. Either on landed position … Liner hanger selection – Design criteria
1. Hold safety meeting with crews before starting running the liner and report in IADC. 2. Make up plug dropping head on single and lay in v door. Prepare 10m of chicksan lines. 3. Make up and bakerlock shoe track. Test floating equipment Make up torques: 7″ 35# nvam, min 10850 ft.lbs Opt 11950 ft.lbs … 7″ Liner Operations (Running and Cementing)