A new thermal extraction protocol to evaluate liquid rich unconventional oil in place and in-situ fluid chemistry

Abrams, Michael A.; Gong, Changrui; Garnier, Carole; Sephton, M. A.

doi:10.1016/j.marpetgeo.2017.09.014

Cited by 71 publications

(37 citation statements)

References 5 publications

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“…Abrams et al. (2017) added a term (S1 LOSS ) for the evaporative loss in equation (18) to emphasize the importance of correcting the loss in resource evaluation …”

Section: Estimation Methods Of In-place and Movable Resources Of Shalmentioning

confidence: 99%

“…The TOY can then be estimated from the two pyrolysis results by the following relationship (%) S1-S1 where S1 and S2 (mg HC/g rock) are free hydrocarbons and remaining generation potential in a whole rock sample, respectively, and S1 EX and S2 EX (mg HC/g rock) are free hydrocarbons and remaining generation potential in the post-solvent-extracted sample, respectively. Abrams et al (2017) added a term (S1 LOSS ) for the evaporative loss in equation (18) to emphasize the importance of correcting the loss in resource evaluation TOY ¼ ðS1 À S1 EX Þ þ ðS2 À S2 EX Þ þ S1 LOSS…”

Section: And Figures 3 Andmentioning

confidence: 99%

“…The core problem of this method is how to effectively correct S1 yield, which includes the calculation of evaporative loss of S1, the absorbed oil, and their impact on the total oil yield (TOY) estimation as well as shale oil mobility evaluation. Many authors (Abrams et al, 2017;Burnham et al, 2018;Chen et al, 2018;Jarvie, 2012Jarvie, , 2018Jiang et al, 2016aJiang et al, , 2016bLi et al, 2019;Michael et al, 2013;Romero-Sarmiento, 2019) have discussed these questions.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation method for resource potential of shale oil in the Triassic Yanchang Formation of the Ordos Basin, China

Guo

Chen

Liuzhuang

et al. 2020

Energy Exploration & Exploitation

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The widely distributed, thick Chang 7 Shale is the richest shale oil formation in China. A calculation method for the evaporative hydrocarbon recovery coefficient based on formation volume factor is proposed considering the correction of heterogeneity-based total organic carbon differences to improve the adsorbed oil calculation method, and light hydrocarbon evaporative sampling losses, which can make mobile and total oil calculations more accurate. The adsorbed oil, S1 evaporative loss, total oil yield, and movable oil yield of 200 shale samples from the Chang 7 Member were calculated using the new methods. Results show that S1 evaporative loss accounts for 29% of S1, total oil yield is 3.5 times S1, and movable oil yield accounts for 37% of total oil yield. Based on the calculated total oil yield and movable oil yield results, the relationships among total oil yield, movable oil yield, and total organic carbon of the Chang 7 were established yielding total oil yield and movable oil yield estimates of 11.12 × 109 t and 4.01 × 109 t, respectively, revealing its tremendous shale exploration potential.

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“…Abrams et al. (2017) added a term (S1 LOSS ) for the evaporative loss in equation (18) to emphasize the importance of correcting the loss in resource evaluation …”

Section: Estimation Methods Of In-place and Movable Resources Of Shalmentioning

confidence: 99%

Section: And Figures 3 Andmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation method for resource potential of shale oil in the Triassic Yanchang Formation of the Ordos Basin, China

Guo

Chen

Liuzhuang

et al. 2020

Energy Exploration & Exploitation

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“…However, more researches are needed to tackle problems related to the quantitative evaluation of the total retained oil content, the occurrence mechanism of shale oil, and pores and fluid flowing mechanism in shale formation. Among these topics, objective quantitative evaluation on the retained oil content of organic-rich shale has always been the focus of ongoing researches (Jarvie, 2012;Chen and Jiang, 2016;Abrams et al, 2017;Jiang et al, 2017;Li M. W. et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Quantitative Measurement of Retained Oil in Organic-Rich Shale—A Case Study on the Chang 7 Member in the Ordos Basin, China

Hou

Lin

et al. 2021

Front. Earth Sci.

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This study proposes a method to calculate the retained oil content (WO) in cores collected by a sealed tool from organic-rich shale with thermal maturity around%Ro = 0.8 in the Ordos Basin, China. Approaches such as soaking cores at low temperature, multiple extractions, multiple pyrolysis, and multiple chromatographic analyses were conducted and then the relationships between total retained oil content and mineral compositions were analyzed. The total retained oil content measured by the method proposed in this paper is 60–260% higher than that measured by a conventional pyrolysis method and 34–69% higher than the sum (WO) of two extractions with dichloromethane (WO3) and chloroform (WO4). After extractions with dichloromethane and chloroform (WO5), the oil retained in the organic-rich shale was 4.7–11.6%, which has not been extracted. Positive correlations exist between WO (i.e., WO3 + WO4) and total organic carbon (TOC) and S1 (absorbed hydrocarbon by rock pyrolysis), and WO has the highest correlation coefficient with the former. The method can provide important guidance for the objective analysis of retained oil in organic-rich shale, and it is reliable for the evaluation of shale oil reserves.

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“…[4,5] In-situ (takes place underground) technologies are used by heating the surface sub-layers with hot fluid and injecting that fluid into the whole wellbore to stimulate shale oil production. [6] Depending on the technique used and the source of the heat obtained, thermal convection and conduction may take place within the reservoir. Reservoir gasification was the first successful in-situ technique conducted in Sweden using the Ljungström Method.…”

Section: Introductionmentioning

confidence: 99%

Applied techniques for residual oil recovery from source rocks: A review of current challenges and possible developments

Abdulkareem

Padmanabhan

2020

Can J Chem Eng

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Depleted fossil fuel resources have led to an investigation of other promising alternatives such as renewable and unconventional energy sources. Shale formations have limited permeability. Therefore, several extraction techniques have been applied to improve residual oil recovery and production. In this work, the techniques applied above ground to extract the organic fractions from oil/gas shale are discussed. Studies related to compositional fractionation, ultrasonic-assisted, microwave-assisted, supercritical fluids, and surface retorting techniques have been conducted systematically in approximately 150 scholarly articles over the past 10 years. The impacts of each technique as well as the drawbacks and challenges are highlighted in this paper. The fractionation techniques are sufficient in general; however, they are time consuming as they include several stages and use a considerable amount of solvents. Ultrasonic and microwave techniques are highly reliant on formation transparency linked to the organic fraction heterogeneous distribution. The surface retorting method, which is highly efficient with up to 90% recovery, for example, the Galoter and Paraho methods, is still dependent on shale particulate size, generates a massive amount of spent shale as waste, and is prominently emissive. Therefore, assessments that can be used to overcome existing drawbacks are considered. This can provide practical insight about these techniques to overcome limitations and concerns in terms of efficiency, cost, environmental issues, and reliability features. The work highlights the dominant extraction techniques for further development.

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A new thermal extraction protocol to evaluate liquid rich unconventional oil in place and in-situ fluid chemistry

Cited by 71 publications

References 5 publications

Evaluation method for resource potential of shale oil in the Triassic Yanchang Formation of the Ordos Basin, China

Evaluation method for resource potential of shale oil in the Triassic Yanchang Formation of the Ordos Basin, China

Quantitative Measurement of Retained Oil in Organic-Rich Shale—A Case Study on the Chang 7 Member in the Ordos Basin, China

Applied techniques for residual oil recovery from source rocks: A review of current challenges and possible developments

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