Constant Pressure Boundary

Description

Analysis of constant pressure boundary effects. Compares sealing boundaries with constant pressure boundaries (aquifer support).

Parameters:

  • tD: Dimensionless time
  • LD: Dimensionless distance to boundary
  • CD: Dimensionless wellbore storage
  • S: Skin factor

Spreadsheet Preview

31 rows x 3 columns

Required Functions

PO.PTA.ToDim.tD

Converts elapsed time to dimensionless time, [dimensionless].

PO.PTA.ToDim.LD

Converts linear distance to dimensionless distance, [dimensionless].

PO.PTA.PD.VW

Calculates dimensionless wellbore pressure drop for vertical well in infinite homogeneous reservoir, [dimensionless].

PO.PTA.PD.VW.LinConP

Calculates dimensionless wellbore pressure drop for vertical well in infinite homogeneous reservoir with linear constant pressure boundary, [dimensionless].

PO.PTA.PD.VW.PerpConP

Calculates dimensionless wellbore pressure drop for vertical well in infinite homogeneous reservoir with perpendicular constant pressures boundary, [dimensionless].

How to use this blueprint
  1. In Excel, go to the Petroleum Office ribbon tab and click Blueprint Manager
  2. Search for Constant Pressure Boundary
  3. Click on the blueprint to preview the spreadsheet template
  4. Click Insert to place it into your worksheet. Modify the input values to match your data.

Related Theory

Bounded Reservoir Solutions for Pressure Transient Analysis

Method of images for modeling boundary effects including sealing faults, constant pressure boundaries, and combinations in well test analysis.

Dimensionless Variables for Pressure Transient Analysis

Definitions and equations for dimensionless pressure, time, radius, distance, and wellbore storage used in well test analysis and type curve matching.

Infinite Acting Reservoir Solutions for Pressure Transient Analysis

Line source solution, Ei function, Stehfest numerical inversion, and wellbore storage/skin effects for infinite homogeneous reservoir well testing.

Pressure Transient Analysis Overview

Overview

Comprehensive guide to well testing models and interpretation methods for reservoir characterization

Related Blueprints

Boundary Effects Analysis

Analysis of boundary effects on wellbore pressure. Compares infinite acting reservoir with single linear fault and perpendicular sealing faults.

Skin Factor Effect

Demonstrates the effect of skin factor on wellbore pressure. Positive skin indicates damage, negative skin indicates stimulation.

Radial Flow Analysis

Infinite acting radial flow analysis using line source solution and vertical well models. Calculates dimensionless pressure for pressure transient interpretation.

Dimensionless Variables Conversion

Conversion between real and dimensionless variables for pressure transient analysis. Essential for type curve matching and analytical solutions.

Horner Plot Analysis — P* Calculation

Pressure buildup interpretation using Horner semilog analysis with Bourdet derivative for IARF identification. Includes forward model for synthetic data generation and round-trip validation.

Fetkovich Aquifer Model

Calculate water influx using the Fetkovich pseudo-steady state aquifer model. This simplified approach treats the aquifer as a tank with a productivity index.

Tags:
pressure-transientboundaryconstant-pressureaquiferwell-test

Need a custom calculation? Request a Blueprint

An unhandled error has occurred. Reload X