High-Water Cut: Experience and Assessment in PDO

Abstract

TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractA study from PDO indicated that the allocation and reconciliation factors of Nimr field had shown a deterioration trend since 1999. The suggested possible cause of this deterioration was the increase of net oil calculation uncertainty as water cuts approaches 80% and above. On the individual well basis, about 20% of all the wells produce at greater than 95% water cut but contribute to about 8% of production. The overall water cut of the Nimr asset is currently 87% and is forecast to increase to 90% over the next ten years causing further deterioration of the reconciliation factor.

Water-Cut Measurement Techniques in Oil Production and Processing—A Review

“…This water-cut meter can measure the water cut for the full range (0-100%) in transient conditions [29]. It is based on the large difference between the absorption of infrared radiation by crude oil and water [30]. There are certain peaks in the NIR spectrum, where water absorbs more energy at higher wavelengths than oil [31], as shown in Figure 10a [32].…”

Enfrentando el desafío del alto corte agua en campos petroleros: causas, diagnóstico y mecanismo químico de control

“…Antes de intentar solucionar un problema lo primero es identificar su causa, para ello existen algunas técnicas que, a través de las herramientas e información disponible de un pozo (Busaidi K. y Bhaskaran H., 2003), permiten conocer la existencia de un problema de producción de agua, el punto donde se genera la problemática y el tipo específico de problema, ya que, no toda el agua que acompaña la producción de petróleo es obtenida de la misma manera y por lo tanto el mecanismo para controlarla variará (Alzate D., León. J. M., Cabrera F. y Manrique E., 2017); uno de los casos más comunes es cuando se inyecta agua al yacimiento con fines de mantenimiento de presión o recobro mejorado (Paris de Ferrer M., 2001), pero el agua inyectada no logra recuperar tanto petróleo como se esperó, se observa un problema de producción excesiva de agua que puede estar provocado por fracturas y fisuras en el subsuelo o por canales de alta permeabilidad entre los pozos inyector y productor.…”

Modeling of External Filter Cake Build-up in Radial Geometry

“…Therefore, the produced fluids are not exclusively hydrocarbons but contain water, often in very large amounts. Worldwide, 75% of the production is water (Al-Abduwani, 2005) and in some regions this fraction may reach to 98% (Busaidi and Bhaskaran, 2003). Produced water (PW), depending on the geological formation and lifetime of the reservoir, contains organic and inorganic materials including solid particles and oil droplets.…”