Thermal Maturity Differences in Oils Produced From Lower Permian Wolfcamp A, B &amp; C Laterals, Midland Basin

Zumberge, John E.; Rocher, Don; Reed, J.C.

doi:10.15530/urtec-2017-2694313

Cited by 2 publications

(2 citation statements)

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“…High-yield shale oil regions in North America generally have high gas and oil ratios, low crude-oil densities, and medium–high shale maturity. − The thermal evolution of organic matter in the Mesozoic–Cenozoic shale of northern China is predominantly in the medium–low maturity stage; consequently, oil production from the organic matter is low. The crude oil has a high heavy-component content, high specific gravity, high viscosity, and low gas and oil ratio, with organic pores being underdeveloped.…”

Section: Introductionmentioning

confidence: 99%

“…Most shale oil developed in naturally mature areas under geological conditions is light oil of low crude-oil density, with saturated and aromatic hydrocarbons of lower molecular weight being more likely to migrate in fine-grained shale and therefore easier to recover. , In situ heating of shale oil has been practiced since the early 1980s, and after decades of effort, industrial trials were successfully undertaken in North America for the first time in 2008. − The Shell Petroleum Company undertook shale in situ heating of North American marine shale, with heating rates of 0.8 °C/day to >1000 °C/day over a temperature range of 300–450 °C . It was found that the higher the heating rate, the lower the API gravity of the produced oil and the lower its quality.…”

Section: Introductionmentioning

confidence: 99%

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Characteristics of Oil and Gas Produced by In Situ Heating of Shale: A Case Study of the Chang 7 Member, Ordos Basin, China

Hou

et al. 2022

Energy Fuels

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Shale in the Chang 7 member of the Triassic Yanchang Formation of Ordos Basin is just suitable to shale oil development by in situ heating for its low maturity. In this study, continuous in situ heating simulations at three different heating rates were undertaken to investigate oil and gas characteristics of the Chang 7 shale. Results indicated that the shale has an oil production potential of up to 43–44 kg/t shale when heated to 450 °C. The heating rate had a minor effect on oil yield. The produced oil was light oil with a C8–C10 main peak. Saturated and aromatic hydrocarbons took up a total proportion of 87–90%. The saturated hydrocarbon contents in produced oil decreased with the increasing temperature accompanying aromatic increasing. Total gas yields for the three heating rates after heating to 450 °C were not significantly different, with total yields of 15.68–16.68 m3/t shale. However, yields of different gas components varied with the heating rate. The yield of hydrocarbon gas at a fixed temperature increased with the decreasing heating rate. Our experimental results also indicated that slow heating was favorable to reduce harmful gas formation by an in situ heating method during Chang 7 shale oil development.

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Section: Introductionmentioning

confidence: 99%