Integrated Approach To Managing Formation Damage in Waterflooding

Fig. 1—Formation damage as a function of solids size (FORDAM).

Understanding of formation damage is a key theme in a waterflood project. An integrated multidisciplinary approach is required to determine an optimal design and strategy. An operator has developed a suite of tools to tackle these issues and help in adequate design and optimization of waterfloods.

Introduction

Many waterfloods in the operating phase do not perform as expected. Often this is because of well-injectivity issues where the required water quality for the injected water is either not properly defined (i.e., by the subsurface disciplines) or not properly managed (i.e., at the surface facilities). A rapid decline in well injectivity can result when injecting under matrix conditions, and a loss in reservoir containment caused by out-of-zone injection (OOZI) or a short-circuiting injector and producer can occur when injecting under fractured conditions, all negatively affecting reservoir sweep.

Subsurface and Subsurface-Modeling Work Flows

To determine an optimal waterflooding concept, it is important for the integrated work flow that the outcome of the subsurface assessment be a range of technically feasible scenarios. These scenarios should incorporate the ranges in subsurface uncertainties combined with subsurface concept options. The objective for the subsurface work flow is to define for each of these scenarios the production profile for the field, injection volume, quality of injected water, number of injection wells, subsurface targets, risk, and mitigations.

This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 174174, “Integrated Approach To Managing Formation Damage in Waterflooding,” by Sergey Aristov, Paul van den Hoek, and Eddie Pun, Shell, prepared for the 2015 SPE European Formation Damage Conference, Budapest, Hungary, 3–5 June. The paper has not been peer reviewed.
...
This article is reserved for SPE members and JPT subscribers.
If you would like to continue reading,
please Sign In, JOIN SPE or Subscribe to JPT

Integrated Approach To Managing Formation Damage in Waterflooding

01 February 2017

Volume: 69 | Issue: 2

STAY CONNECTED

Don't miss the latest content delivered to your email box weekly. Sign up for the JPT newsletter.