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Keywords: oil recovery
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Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, April 25–29, 2022
Paper Number: SPE-209384-MS
... resolutions (45s). The experimental results show that injection brine containing high sulfate concentration rapidly increases the oil connectivity across the porous medium within the first few minutes and consequently improves oil recovery from pores regardless of pore sizes. brine oil mobilization...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, April 25–29, 2022
Paper Number: SPE-209403-MS
...Summary Summary Typical seawater depths for deep-water oil fields range from 1000m to 4000m. For these deep-water oil fields, the most popular and cost-effective technologies for increased oil recovery are water injection and subsea boosting with a multiphase helico-axial pump on the seabed...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, April 25–29, 2022
Paper Number: SPE-209385-MS
... for corefloods. The cumulative oil recovery was in the range of 94-96% original oil in place (OOIP) in the corefloods. The surfactant retention was low (0.15 mg/gm of rock) in spite of the high clay content. The study showed that 0.5 PV of ASP slug and 2700 ppm of the polymer were required to make the flood...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200461-MS
... flooding sequences in cores A and B A-Sor (frac. PV) A-RF (%OOIP) B-Sor (frac. PV) B-RF (%OOIP) Soi 0.9 - 0.9 - Sorw 0.62 30.8 - - Sor (3 cP) 0.4 55.8 0.34 62.5 Sor (60 cP) 0.35 60.7 0.27 70.1 Figure 19 Oil recovery factor, water cut, and effluent...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200468-MS
... data is also useful for designing and implementing enhanced oil recovery (EOR) pilots to improve resource recovery from the existing wells. It is known from the literature that the primary recovery from the shale wells is typically about 5-10% of the original oil in place. Therefore, tremendous...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200451-MS
... oil with LSW, D) the plot of 1N molecules for the pre-contacted crude oil with HSW. Abstract Abstract Despite the plethora amount of research have been conducted on the Low Salinity Water Injection (LSWI) and the pertinent mechanisms, this Enhanced Oil Recovery (EOR) method still seems...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200431-MS
... (with initial water in the matrix). F i is defined in Equation 7 . S W stands for water saturation. Cumulative improved oil recovery factor by surfactant solution F 1 F 3 Sw After the 1st soaking period 0.3348 0.0180 0.4961 0.4658 After the 2nd soaking period 0.6303 0.0175...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200430-MS
... to investigate the stimulated rock volume (SRV) characteristics of the study wells, impact of SRVs on well interference in the drilling unit and the effective drainage areas of the study wells. This information was used to investigate the gas containment, the gas-oil contact and the oil recovery potential...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200432-MS
... is about the same. MEA is preferred alkali vs DEA due to lower molecular weight. MEA is a slightly stronger base than NH3, but the difference is insignificant. A critical learning from past experiments using NH 3 for alkali was that high oil recovery could not be achieved by adding only cosurfactant...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200458-MS
... to water after "waterflooding" the "oil reservoir" was 1.8 md. CO was then injected and allowed to soak for 72 hours. After the soak, 50,000 TDS water was again injected and the effective permeability to water was 8.8 md. Significant oil recovery was observed, but unfortunately not quantified. Table 1...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200464-MS
... the injection water mainly moves through preferential zones with low volumetric sweep efficiency. This inefficient water recirculation throughout the field has limited oil recovery and resulted in high water oil ratios at the production side. Low oil recovery and excessive water production has increased...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200385-MS
... concentration surfactant design has re-emerged its uneconomic face. High concentration surfactant formulation is the micellar polymer design from the past that produced high oil recoveries in the lab but were uneconomic in the field. Formulation designs must consider factors beyond simply oil recovery...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200359-MS
... at constant pressure Figure 10 Primary depletion and huff & puff Figure 9 Total oil recovery and gas usage vs. gas volume injected Figure 11 Primary depletion and huff & puff- Peak field production rates Figure 12 Huff and puff recovery and gas usage vs. gas...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200346-MS
... of a 1-D sector model Figure 3. Relative permeability (left) and capillary pressure (right) data for strongly oil-wet shale matrix Figure 4. Centrifuge Rotor and Bucket ( Uzun, 2018 ) Figure 5. Imbibition Oil Recovery Apparatus ( Uzun, 2018 ) Figure 6. (a) Low...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200335-MS
...) and 90°C samples (lower left). Total glucose equivalents were determined for the 90°C (lower right) samples to determine if the glucose had been metabolized. Abstract Abstract Polymers for enhanced oil recovery (EOR) purposes are required to have long term mechanical, thermal, chemical...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200382-MS
.... The proposed methodology consists of the following steps: 1) Characterizing wettability of the candidate rock samples under different conditions of brine salinity and NP concentrations through dynamic contact-angle measurements, 2) Evaluating NP-assisted imbibition oil recovery during the shut-in period...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200326-MS
... ] received a patent in 1952 to improve oil recovery by the injection of CO 2 . The injection of CO 2 has been in been since the early 1960s (Ramsay et. al [ 68 ]). Later, the first field-scale CO 2 EOR was implemented in North Crossfield at West Texas in the 1970s [ 65 ], [ 72 ]. According to a study...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200403-MS
... saturation and increased oil recovery. Polymer flooding mainly accelerated oil recovery by recovering additional oil from unswept zones and had minimal impact in a mature reservoir. Interwell tracer technology combined with moment analyses were used to make quantitative comparisons of both processes...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200383-MS
... ± 1.6 19.3 ± 2.9 0.2% Surfactant 30.3 ± 2.9 25.2 ± 3.3 10% Urea/0.2% Surfactant 26.6 ± 1.5 24.3 ± 3.0 Table 4 Results of the oil recovery tests Fluid Woodford A @ 1500 psi Woodford B @ 1500 psi Woodford B @ 4000 psi Oil recovery, % 5% KCl 5.9 5.9 10...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, August 31–September 4, 2020
Paper Number: SPE-200321-MS
... would have exhibited those ad hoc modifications. The resulting probability, called the posterior, P ( m | d obs ), of the model given the observed data, is therefore almost zero. A first step toward implementing enhanced oil recovery techniques, such as low salinity flooding, consists of a core...

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