Design and Implementation of Four Enhanced Recovery Projects in Bay Fields of South Louisiana

Boardman, Roger; Moore, Larry F.; Julian, Michael; Bilbrey, Don; Moore, J.

doi:10.2523/10697-ms

Cited by 5 publications

(1 citation statement)

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“…It causes an increase in productivity in producers, but typically only for a short period of time. Large portions of the reservoir that should have been treated and have a large portion of the reserves are not treated and have no connection to the wellbore (Fulton et al 2005). For water injectors, in many cases there is only one or a few places where the fluid is injected.…”

Section: Introductionmentioning

confidence: 99%

Fluid-Diversion Monitoring: The Key to Treatment Optimization

Glasbergen

Yeager

Reyes

et al. 2010

SPE Production &Amp; Operations

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In stimulation and injection treatments for removing or preventing formation damage, placement of the injected fluids is essential. Throughout the years, several diversion and placement techniques have been applied to obtain a desired fluid placement. A recent development is the application of distributed temperature sensing (DTS) to monitor the temperature profiles along the wellbore in real time during these treatments. Recent case histories showed that fluid placement can be quantified. Quantification of fluid distribution enables one to determine the flow distribution both before and after a diverter stage so that the diversion effect can be quantified.This paper discusses several case histories where DTS was applied to quantify the effectiveness of different diverters. The effects of chemical diverters, such as relative permeability modifiers (RPMs) and in-situ-crosslinked acids (ICAs), and moretraditional diverters, such as rock salt, are discussed. Because of the advanced monitoring used with the temperature profiles, both the immediate and the sustained effect of the diverters can be measured. The changes in the flow distribution are not limited to diverters. Reactive fluid or changes in flow rate can change the flow distribution as well. These effects were measured during the stimulation treatments.The post-treatment analysis of the measured temperature profiles in combination with treatment pressures and flow-rate information resulted in accurate knowledge of the effectiveness of the different diverters and stimulation effects over time. This knowledge will be used in future treatments to help optimize volumes, rates, fluid systems, and the selection of the appropriate diverter.

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Section: Introductionmentioning

confidence: 99%

Fluid-Diversion Monitoring: The Key to Treatment Optimization

Glasbergen

Yeager

Reyes

et al. 2010

SPE Production &Amp; Operations

View full text Add to dashboard Cite

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DTS Sensing: An Emerging Technology Offers Fluid Placement for Acid

Reyes

Yeager

Glasbergen

et al. 2011

SPE Annual Technical Conference and Exhibition

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Distributed temperature sensing (DTS) is used on wells to determine the effectiveness of acid treatments. The technology uses a fiber-optic cable to read temperature in real-time, which allows for validation of fluid placement. In the case studies presented in this paper, effectiveness was determined during the pumping of the job. Using this process, the operator was able to decide if a change to the design needed to be made in real-time during pumping. The effectiveness of the acid job was dictated by how effective the fluid was placed into all zones. Concerns related to the acid treatments included where the acid was placed in the well, if the acid went where it was supposed to, and if the acid went into the first least-resistive zone and subsequent zones went untreated. If the latter took place, then investment capital for gallons of acid was not used wisely. The acid treatments included a wide variation of stimulation methods, such as stimulation of the formation using fracturing or matrix rates, varying the acid percentage, varying the type of acid, using linear, gelled, or crosslinked acid, varying the rate, and using diverters. Historically, on acid jobs, surface readings for pressure and rate were the only indicators to judge the effectiveness of the treatment. As the operator attempted the previously mentioned acid treatments and also monitored the treatment using DTS, it was observed that what is seen at the surface can be misleading. This is because surface pressure can be masked by friction and is therefore not a valid indictor for what occurred down hole, and because diversion can take place without surface indication. DTS allowed for practical adjustment to the diversion strategy for the well that was being treated. Candidate selection is highly recommended when using the DTS-number process. Placement of stimulation fluid was and is critical to well stimulation. DTS allowed real-time analysis to determine in real-time if stimulation was effective during the job.

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Long Interval Foamed Diversion Treatment: A Mid-Scale Multizone Diversion Treatment Study

et al. 2015

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Effective and uniform placement of treatment fluid across multiple zones can be challenging. This is particularly true during stimulation or remedial treatments for formation sand control, as well as during water shutoff treatments. Such challenges can be greatly enhanced when a long interval sand formation is largely heterogeneous. Good diversion technology is often what dictates treatment success. Current laboratory methods used to study diversion at downhole conditions can leave a large gap between laboratory and actual operational results. A recent midscale laboratory study involving a new complex multizone formation testing system has helped provide a method for closely simulating downhole conditions. This paper describes a new laboratory testing setup, which allows an effective dynamic study of diversion. The new testing apparatus allows for evaluation of different critical parameters, such as concentration, temperature, and pressure on the diversion mechanism. Results are presented for laboratory case studies of diversion during different scenarios, including formation sand/fines control treatment and water shutoff treatment. The results generated can provide insight to help bridge the gap between a laboratory study and operations encountering multiple zones.

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Design and Implementation of Four Enhanced Recovery Projects in Bay Fields of South Louisiana

Cited by 5 publications

References 0 publications

Fluid-Diversion Monitoring: The Key to Treatment Optimization

Fluid-Diversion Monitoring: The Key to Treatment Optimization

DTS Sensing: An Emerging Technology Offers Fluid Placement for Acid

Long Interval Foamed Diversion Treatment: A Mid-Scale Multizone Diversion Treatment Study

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