Rate Dialog
View
Quick
Look.
OK
View
Pie
Charts. OK
View Plots
OK
Optimize Planning
Impact Force
OK
HHP OK
Optimize Nozzle Check
Final Check -Hole Cleaning -- Pressure Loss -- ECD Charts
Study ECD’s with regard to limitations of: pore pressure（孔隙压力） fracture pressure（破裂压力）
Avoid kicks（井涌） and formation damage resulting from swab and surge pressures
Sign Off
When Should I Use Hydraulics Module
Pressure Loss Annular Velocity Swab/Surge Hydraulics Optimization Hole Cleaning
Introduction and Concepts
➢ Pipe roughness and eccentricity calculations for Herschel-Bulkley are based on empirical correlations.
➢ Pressure drops across mud motors, MWD’s, split flow（分流） components such as under reamers and hole openers are accounted.
1 method uses actual rig circulating pressures Graphical methods ( Bit Vendor Optimization May Be Rqd.)
Drilling
Analysis process
Review Data
Mode: Hole Cleaning Operational
View Plots
OK
Problem
Provide Solution --Best Pump -- Min Q
Pump Rate Range Mode（压力损失，环空流速，环空排量）
application
Overview
➢ Hole cleaning model is based on empirical relationships coupled with analytical formulations
➢ Basis for frictional pressure loss calculations using Rheological models （ 流变模型）such as Bingham Plastic, Power Law（幂律）, Newtonian, Herschel-Bulkley, and Generalized Herschel-Bulkley.
Rheological Models
Bingham Plastic, PV (塑性粘度)& YP (动切力)dependent Power Law, n ቤተ መጻሕፍቲ ባይዱ流性指数）& k （稠度系数）coefficients Herschel Bulkley, n & k curve fit from Fann data Newtonian ( Water) User-defined Surface Equipment Configurations Several pumps - active / inactive ECD - accommodates deviated wells(主要适用于斜井)
➢ Swab/Surge calculations based on conventional steady-state model（稳定 模型）.
➢ Effect of wellbore circulating temperatures on fluid properties are based on transient models.
Objectives
➢ Explain the purpose of the Hydraulics module(模块). ➢ State when the Hydraulics module should be used. ➢ Explain the different modes of Hydraulics analysis. ➢ Explain the use of Hydraulics module for practical
Pump Limitations.
Problem
Select New Pump
OK
Check Critical Annulus Velocity and Q Mode
Sensitivity -RPM -ROP
Cont. on next slide
Analysis process
Mode: Pressure: Pump Rate Fixed
石油工程青年学术论坛
wellplan--水力参数计算
Topics Discussed in the Module
Study cases too complex for hand calculations “what if” analysis is made easy
Optimize flow rates based on: bit performance (maximize ROP) hole cleaning
PV＝Φ600-Φ300（MP.s） YP=1/2(2Ф300-Ф600)(Pа)
Introduction and Concepts
Classical Methods of bit jet optimization:
4 calculation methods
Maximum hydraulic horsepower Maximum bit jet impact force Maximum nozzle velocity Percent system pressure loss at the bit