Submit

Login Login

Register Register

Home / Journals / FDMP / Online First / doi:10.32604/fdmp.2024.058454
Journal Menu
Special Issues
Table of Content

All issues

Online First

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

Open Access

ARTICLE

A Chart-Based Diagnostic Model for Tight Gas Reservoirs Based on Shut-in Pressure during Hydraulic Fracturing

Mingqiang Wei1,*, Neng Yang1, Han Zou2, Anhao Li3, Yonggang Duan1
1 Petroleum Engineering School, Southwest Petroleum University, Chengdu, 610500, China
2 Sinopec Northwest Oilfield Branch, Bayingolin Mongolian Autonomous Prefecture, 841600, China
3 Southwest Oil and Gas Field Company, Huayou Company, Chengdu, 610017, China
* Corresponding Author: Mingqiang Wei. Email: email
(This article belongs to the Special Issue: Fluid and Thermal Dynamics in the Development of Unconventional Resources II)

Fluid Dynamics & Materials Processing https://doi.org/10.32604/fdmp.2024.058454

Received 12 September 2024; Accepted 22 November 2024; Published online 19 December 2024

Abstract

A precise diagnosis of the complex post-fracturing characteristics and parameter variations in tight gas reservoirs is essential for optimizing fracturing technology, enhancing treatment effectiveness, and assessing post-fracturing production capacity. Tight gas reservoirs face challenges due to the interaction between natural fractures and induced fractures. To address these issues, a theoretical model for diagnosing fractures under varying leak-off mechanisms has been developed, incorporating the closure behavior of natural fractures. This model, grounded in material balance theory, also accounts for shut-in pressure. The study derived and plotted typical G-function charts, which capture fracture behavior during closure. By superimposing the G-function in the closure phase of natural fractures with pressure derivative curves, the study explored how fracture parameters—including leak-off coefficient, fracture area, closure pressure, and closure time—impact these diagnostic charts. Findings show that variations in natural fracture flexibility, fracture area, and controlling factors influence the superimposed G-function pressure derivative curve, resulting in distinctive “concave” or “convex” patterns. Field data from Well Y in a specific tight gas reservoir were used to validate the model, confirming both its reliability and practicality.

Graphical Abstract

A Chart-Based Diagnostic Model for Tight Gas Reservoirs Based on Shut-in Pressure during Hydraulic Fracturing

Keywords

Tight gas reservoir; volume fracturing; G-function; fracture diagnosis; complex fracture network; shut-in pressure

  • 30

    View

  • 6

    Download

  • 0

    Like

Related articles
Copyright© 2024 Tech Science Press
© 1997-2024 TSP (Henderson, USA) unless otherwise stated

Share Link