EOR Survey in the North Sea

Teigland, Rune; Kleppe, Jon

doi:10.2118/99546-ms

Cited by 32 publications

(4 citation statements)

References 97 publications

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“…Usually, any enhanced oil recovery process selection criteria serve as the first-pass screening guidelines to compare the candidate reservoir with other reservoirs produced using the same EOR method. The screening criteria for polymer flooding are shown in Table 2 [92][93][94][95][96][97]. The maximum polymer flooding viscosity (4000 cp) was reported in Pelican Lake, Canada [97].…”

Section: Discussionmentioning

confidence: 99%

Evaluating Factors Impacting Polymer Flooding in Hydrocarbon Reservoirs: Laboratory and Field-Scale Applications

Khlaifat,

Fakher,

Harrison

2023

Polymers

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Polymer flooding is an enhanced oil recovery (EOR) method used to increase oil recovery from oil reservoirs beyond primary and secondary recovery. Although it is one of the most well-established methods of EOR, there are still continuous new developments and evaluations for this method. This is mainly attributed to the diverse polymers used, expansion of this method in terms of application, and the increase in knowledge pertaining to the topic due to the increase in laboratory testing and field applications. In this research, we perform a review of the factors impacting polymer flooding in both laboratory studies and field-based applications in order to create guidelines with respect to the parameters that should be included when designing a polymer flooding study or application. The main mechanism of polymer flooding is initially discussed, along with the types of polymers that can be used in polymer flooding. We then discuss the most prominent parameters that should be included when designing a polymer flooding project and, based on previous laboratory studies and field projects, discuss how these parameters impact the polymer itself and the flooding process. This research can provide guidelines for researchers and engineers for future polymer flooding research or field applications.

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Section: Discussionmentioning

confidence: 99%

Evaluating Factors Impacting Polymer Flooding in Hydrocarbon Reservoirs: Laboratory and Field-Scale Applications

Khlaifat,

Fakher,

Harrison

2023

Polymers

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“…The method of water-alternating-gas (WAG) was proposed by Caudle and Dyes (1958) and aimed at improving gas flood conformance. WAG is the most widely practiced profile control method in the oil reservoirs today (Kulkarni and Rao, 2004), and based on total enhanced production and number of field applications, WAG appears to be the most successful EOR technology in the North Sea (Teigland and Kleppe, 2006).…”

Section: Water-alternating-gasmentioning

confidence: 99%

Experimental Study of Foam Generation, Sweep Efficiency and Flow in a Fracture Network

et al. 2014

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Foam is consistently generated in situ in rough-walled, calcite fracture networks during experiments using surfactant-alternating-gas (SAG) and coinjection of gas and surfactant solution over a range of gas fractional flows. Boundary conditions are systematically changed including gas fractional flow, total flow rate, and liquid rates. Local sweep efficiency was evaluated through visualization of the propagation of the fluid front and compared for pure gas injection, SAG, and coinjection. Foam as a mobility control agent resulted in significantly improved sweep and delayed gas breakthrough. Gas mobility reduction factors varied from about 200 to more than 1000 consistent with observations of improved sweep. Shear-thinning foam-flow behavior was observed during coinjection over a range of gas fractional flow.

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“…The North Sea is one of the world's most prolific and extensively studied petroleum provinces (Copestake et al., 2003; Cornford, 1998; Leadholm et al., 1985; Rüpke et al., 2008). Over the course of the past 60 years, numerous oil and gas fields have been discovered, many of which have served as the testing ground for new technologies such as time‐lapse 4D seismic or EOR (Awan et al., 2006; Landrø et al., 1999). With this history of developing and applying cutting‐edge methodologies, it is a fitting setting to test the workflow proposed here.…”

Section: Introductionmentioning

confidence: 99%

Reflection seismic thermometry

Sarkar

Huuse

2021

Basin Research

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The North Viking Graben (NVG) is part of the mature North Sea Basin petroleum province and designated as a major carbon storage basin for NW Europe. It has been extensively drilled over five decades with an abundance of well and seismic data in the public domain. As such it serves as an excellent setting to demonstrate the efficacy of a reflection seismic data led approach to predicting subsurface temperatures using a state-of-the-art, fullwaveform inversion velocity model covering the entire NVG. In a forward modelling approach, an empirical velocity to thermal conductivity transform is used in conjunction with predefined heatflow to predict subsurface temperature. The predefined heatflow parameters are set based on the range of values from previous studies in the area. Abundant well data with bottom hole temperature (BHT) records provide calibration of results. In the second step of inverse modelling, BHTs and the velocity derived thermal conductivity are used to derive heat flow based on a 1D steady-state approximation of Fourier's law. In this way, heatflow is estimated over the 12,000 km 2 model area at a km scale (lateral) resolution, highlighting lateral variability in comparison with the traditional point-based heatflow data sets. This heatflow is used to condition a final iterative loop of forward modelling to produce a temperature model that is best representative of the subsurface temperature.Calibration against 139 exploration wells indicate that the predicted temperatures are on average 0.6℃ warmer than the recorded values. BHT for the recently completed Northern Lights carbon sequestration 31/5-7 (Eos) modelled to be 97℃, which is 6℃ below the recorded BHT. This highlights the applicability of this workflow not only towards enhancing petroleum systems modelling work but also for use in the energy transition and for fundamental scientific purposes.

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EOR Survey in the North Sea

Abstract: TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractThis paper provides a summary and a guide of the Enhanced

Cited by 32 publications

References 97 publications

Evaluating Factors Impacting Polymer Flooding in Hydrocarbon Reservoirs: Laboratory and Field-Scale Applications

Evaluating Factors Impacting Polymer Flooding in Hydrocarbon Reservoirs: Laboratory and Field-Scale Applications

Experimental Study of Foam Generation, Sweep Efficiency and Flow in a Fracture Network

Reflection seismic thermometry

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