WITSML - Cement Stage Component Schema Stage number. Stage type. Date and time when mixing started. Datetime at start of pumping cement. Datetime at end of pumping cement. Date and time when displacing cement started. Measured depth at top of interval. Measured depth of base of cement. Excess volume. Average displacement rate. Maximum displacement rate. Final displacement pressure. Volume of returns. Mud circulation elapsed time before the job. Rate mud circulated during stage. Mud circulation pressure. Final displacement pump rate. Displaced Mud, washes and spacers, cements, displacement mud. Annular flow at the end of displacement. Values are "true" (or "1") and "false" (or "0"). Squeeze objective. Squeeze obtained. Values are "true" (or "1") and "false" (or "0"). Measured depth of string (multi-stage cement job). Measured depth of tool (multi-stage cement job. Measured depth of CoilTubing (multi-stage cement job. Total volume inside casing. Total volume outside casing for this stage placement. Tail pipe used? Values are "true" (or "1") and "false" (or "0"). Tail pipe size (diameter). Tail pipe perforated? Values are "true" (or "1") and "false" (or "0"). Tubing pressure at start of job (not coiled tubing). Tubing pressure at end of job. Casing pressure at start of job. Casing pressure at end of job. Constant back pressure applied while pumping the job (can be supersede by a back pressure per pumping stage) Pressure CTU start. Pressure CTU end Breakdown pressure. Breakdown rate. Squeeze pressure average. Squeeze pressure final. Squeeze pressure held. Values are "true" (or "1") and "false" (or "0"). Squeeze pressure left on pipe. Time pressure held. Squeeze job average rate. Squeeze job maximum rate. Pump rate at start of job. Pump rate at end of job. Pill below plug. Values are "true" (or "1") and "false" (or "0"). Plug catcher. Values are "true" (or "1") and "false" (or "0"). Circulate out measured depth. Circulate prior to start of job. Type of mud in hole. Mud density. Funnel viscosity in seconds (in hole at start of job). Plastic viscosity (in hole at start of job). Yield point (in hole at start of job). Gels-10Sec (in hole at start of job). Gels-10Min (in hole at start of job). Bottom hole circulating temperature. Bottom hole temperature static. Method to estimate excess volume. Mix method. Method by which density is measured. Fluid returns. Values are "true" (or "1") and "false" (or "0"). Top plug used? Values are "true" (or "1") and "false" (or "0"). Bottom plug used. Values are "true" (or "1") and "false" (or "0"). Amount of bottom plug used. Plug bumped? Values are "true" (or "1") and "false" (or "0"). Pressure prior to bumping plug / pressure at end of displacement Pressure plug bumped. Pressure held to. Float held? Values are "true" (or "1") and "false" (or "0"). Total mud lost. Displacement fluid name. Density of displacement fluid. Volume of displacement fluid. Unique identifier for the stage.