Mini-Frac Analysis Documentation简单的绘画
PanSystem® v2014
Contents
Data Edit Plot (3)
Well, Rervoir and Fluid Parameters (4)
Pre-Closure Analysis (5)
Test Overview Plot (5)
G-function Plot (6)
安全文化理念
Square-Root Plot (8)
Log-Log Plot (9)
Post-Closure Analysis (11)
Derivative Plot (11)
Semi-log Plot (12)
Linear Flow Plot (13)
Calculation Panel (14)
Prets Dialog (16)
References (16)
Data Edit Plot
As for any test, pick the start of injection (t start ), end of injection (t 0), and the end of the fall-
off period (t end ).
飞扑漫画
– The pumping period can be single or multiple rates. In the ca of multiple rates, pick
intermediate rate changes during the pumping period (e figure below).
– Pressure P 0 at t 0 will be taken as the initial shut-in pressure “ISIP”. Adjust the value of
P 0 to remove any frictional effect if necessary, to get the correct ISIP .
岩泉寺– U the rt-click menu on the time axis to lect the time units (hrs, mins, etc).
– Alternative pump rate units lpm and bpm are available in the mini-frac unit systems
公文版记Varying pump rate
Well, Rervoir and Fluid Parameters
Enter the Well, Rervoir and Fluid parameters in the normal manner. There are a few special points to note for mini-frac analysis:
•The well orientation should be t to Vertical/Slant
•The rervoir model should be Vertical fracture - infinite conductivity
The are mandatory ttings for access to the Mini-frac module, regardless of the actual well orientation or the nature of the fracture. They have no direct influence on the analysis, but are required by PanSystem.
•The Fluid Parameters correspond to the injection fluid, not to the rervoir fluid. If they are to be calculated, u the injection temperature for Check Temperature, not
工作汇报怎么写the rervoir temperature.
•Some of the mini-frac analysis calculations require Young’s Modulus. This can be entered now in the Fluid Parameters dialog, or later during analysis via the Prets
四字古风dialog. Leaving it at zero will result in the Fluid Loss Coefficient being displayed as
infinity on some plots.
Pre-Closure Analysis
Test Overview Plot
•Select the Pick fracture init time button in the Mini-frac ribbon bar
• A vertical dashed line appears to the right of the pumping period. Move the line with the mou to cut the pressure where you e the initiation of the
fracture (change of slope). This defines t fi. You might need to zoom the
injection period in order to grab the line.
•When the mou button is relead, the Pick option is disabled. Click on the button again to re-enable it so that the line can be moved again.
•Fracture initiation pressure P fi is obtained automatically by linear
interpolation between pressure data points
趄怎么读
•t fi and P fi are displayed as line results. Confirm the fracture initiation time before proceeding.
•Select the fall-off period for analysis and go to the G-function plot.
