Origin, properties, and implications of solid bitumen in source-rock reservoirs: A review
This paper reviews the significance of solid bitumen with emphasis on source-rock reservoirs. We discuss difficulties and discrepancies with terminology, especially those terms related to the origin of solid bitumen and its physical and chemical properties. Various definitions of solid bitumen have...
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| Veröffentlicht in: | International journal of coal geology 2018-07, Vol.195 (C), p.14-36 |
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| creator | Mastalerz, Maria Drobniak, Agnieszka Stankiewicz, Artur B. |
| description | This paper reviews the significance of solid bitumen with emphasis on source-rock reservoirs. We discuss difficulties and discrepancies with terminology, especially those terms related to the origin of solid bitumen and its physical and chemical properties. Various definitions of solid bitumen have their own justifications and can be used provided there is clarity about which defining criteria are being considered. Difficulties in conforming to chemical-, solubility-, or origin-related definitions lead us to suggest adapting the reflectance of solid hydrocarbon as a practical choice for placing the boundary between solid bitumen and pyrobitumen, and 1.50% is proposed as the boundary value. It has to be noted that this boundary may be shifted down to 1.3% for sulfur-rich kerogen. Recently, much progress has been made by combining imaging and physical adsorption techniques in porosity studies, and so the porosity of solid bitumen is given special emphasis. Comparing pore characteristics obtained from SEM versus those generated by gas adsorption, mercury intrusion, or neutron scattering techniques indicates that the SEM pore inventory fails to account for the smallest pores ( |
| doi_str_mv | 10.1016/j.coal.2018.05.013 |
| format | Article |
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We review the implications of the abundance of solid bitumen on reservoir quality, porosity, permeability, and producibility, based on examples of selected sequences. One of the difficulties in predicting the influence of solid-bitumen-bearing horizons on reservoir quality arises from the problems with detecting organic phases using various logging techniques. The use of specialized techniques such as NMR logging that allows two-dimensional T1 and T2 measurements should be expanded, and other potential techniques need to be further researched and tested. Certain aspects of the properties of solid bitumen that are not as well understood, such as its hydrocarbon generation potential or its role in hydrocarbon migration are also discussed with the aim of identifying further research that could lead to a better understanding of the role that solid bitumen plays in unconventional reservoirs.
•This paper reviews the significance of solid bitumen with emphasis on source-rock reservoirs.•The 1.5% solid bitumen reflectance is proposed as the boundary between solid bitumen and pyrobitumen.•Integration of various techniques is needed to improve understanding of solid bitumen porosity.•Influence of solid bitumen on reservoir quality is complex and requires further studies.</description><identifier>ISSN: 0166-5162</identifier><identifier>EISSN: 1872-7840</identifier><identifier>DOI: 10.1016/j.coal.2018.05.013</identifier><language>eng</language><publisher>United States: Elsevier B.V</publisher><subject>Energy & Fuels ; Geology ; Permeability ; Porosity ; Pyrobitumen ; Solid bitumen ; Solubility ; Unconventional</subject><ispartof>International journal of coal geology, 2018-07, Vol.195 (C), p.14-36</ispartof><rights>2018 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a394t-c1ae975ec7addbd6fe526796e444aa97c3961defa8fd2dea312f71cc662d09a13</citedby><cites>FETCH-LOGICAL-a394t-c1ae975ec7addbd6fe526796e444aa97c3961defa8fd2dea312f71cc662d09a13</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.coal.2018.05.013$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,315,781,785,886,3551,27929,27930,46000</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/1538129$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Mastalerz, Maria</creatorcontrib><creatorcontrib>Drobniak, Agnieszka</creatorcontrib><creatorcontrib>Stankiewicz, Artur B.</creatorcontrib><creatorcontrib>Indiana Univ., Bloomington, IN (United States)</creatorcontrib><title>Origin, properties, and implications of solid bitumen in source-rock reservoirs: A review</title><title>International journal of coal geology</title><description>This paper reviews the significance of solid bitumen with emphasis on source-rock reservoirs. We discuss difficulties and discrepancies with terminology, especially those terms related to the origin of solid bitumen and its physical and chemical properties. Various definitions of solid bitumen have their own justifications and can be used provided there is clarity about which defining criteria are being considered. Difficulties in conforming to chemical-, solubility-, or origin-related definitions lead us to suggest adapting the reflectance of solid hydrocarbon as a practical choice for placing the boundary between solid bitumen and pyrobitumen, and 1.50% is proposed as the boundary value. It has to be noted that this boundary may be shifted down to 1.3% for sulfur-rich kerogen. Recently, much progress has been made by combining imaging and physical adsorption techniques in porosity studies, and so the porosity of solid bitumen is given special emphasis. Comparing pore characteristics obtained from SEM versus those generated by gas adsorption, mercury intrusion, or neutron scattering techniques indicates that the SEM pore inventory fails to account for the smallest pores (<5 nm in size) present in organic matter. Therefore, low-pressure CO2 adsorption is still the most effective technique to assess microporosity (pores <2 nm in diameter) in shales. We conclude that combining observational in situ techniques with techniques based on physical principles is necessary to make progress toward a better understanding of porosity systems in organic matter, including solid bitumen.
We review the implications of the abundance of solid bitumen on reservoir quality, porosity, permeability, and producibility, based on examples of selected sequences. One of the difficulties in predicting the influence of solid-bitumen-bearing horizons on reservoir quality arises from the problems with detecting organic phases using various logging techniques. The use of specialized techniques such as NMR logging that allows two-dimensional T1 and T2 measurements should be expanded, and other potential techniques need to be further researched and tested. Certain aspects of the properties of solid bitumen that are not as well understood, such as its hydrocarbon generation potential or its role in hydrocarbon migration are also discussed with the aim of identifying further research that could lead to a better understanding of the role that solid bitumen plays in unconventional reservoirs.
•This paper reviews the significance of solid bitumen with emphasis on source-rock reservoirs.•The 1.5% solid bitumen reflectance is proposed as the boundary between solid bitumen and pyrobitumen.•Integration of various techniques is needed to improve understanding of solid bitumen porosity.•Influence of solid bitumen on reservoir quality is complex and requires further studies.</description><subject>Energy & Fuels</subject><subject>Geology</subject><subject>Permeability</subject><subject>Porosity</subject><subject>Pyrobitumen</subject><subject>Solid bitumen</subject><subject>Solubility</subject><subject>Unconventional</subject><issn>0166-5162</issn><issn>1872-7840</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp9kM1OwzAQhC0EEqXwApwszk2wncROEJeq4k-q1AscOFmuvYEtrR3ZaRFvT6Jy5rTa1cxo5yPkmrOcMy5vN7kNZpsLxuucVTnjxQmZ8FqJTNUlOyWTQSSziktxTi5S2jDGFSurCXlfRfxAP6NdDB3EHiHNqPGO4q7bojU9Bp9oaGkKW3R0jf1-B56iHw77aCGLwX7RCAniIWBMd3Q-bAeE70ty1pptgqu_OSVvjw-vi-dsuXp6WcyXmSmass8sN9CoCqwyzq2dbKESUjUSyrI0plG2aCR30Jq6dcKBKbhoFbdWSuFYY3gxJTfH3JB61MliD_bTBu_B9ppXRc1FM4jEUWRjSClCq7uIOxN_NGd6JKg3eiSoR4KaVXogOJjujyYY3h8qxTEdvAWHcQx3Af-z_wIgAntq</recordid><startdate>20180701</startdate><enddate>20180701</enddate><creator>Mastalerz, Maria</creator><creator>Drobniak, Agnieszka</creator><creator>Stankiewicz, Artur B.</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>20180701</creationdate><title>Origin, properties, and implications of solid bitumen in source-rock reservoirs: A review</title><author>Mastalerz, Maria ; Drobniak, Agnieszka ; Stankiewicz, Artur B.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a394t-c1ae975ec7addbd6fe526796e444aa97c3961defa8fd2dea312f71cc662d09a13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Energy & Fuels</topic><topic>Geology</topic><topic>Permeability</topic><topic>Porosity</topic><topic>Pyrobitumen</topic><topic>Solid bitumen</topic><topic>Solubility</topic><topic>Unconventional</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Mastalerz, Maria</creatorcontrib><creatorcontrib>Drobniak, Agnieszka</creatorcontrib><creatorcontrib>Stankiewicz, Artur B.</creatorcontrib><creatorcontrib>Indiana Univ., Bloomington, IN (United States)</creatorcontrib><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>International journal of coal geology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Mastalerz, Maria</au><au>Drobniak, Agnieszka</au><au>Stankiewicz, Artur B.</au><aucorp>Indiana Univ., Bloomington, IN (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Origin, properties, and implications of solid bitumen in source-rock reservoirs: A review</atitle><jtitle>International journal of coal geology</jtitle><date>2018-07-01</date><risdate>2018</risdate><volume>195</volume><issue>C</issue><spage>14</spage><epage>36</epage><pages>14-36</pages><issn>0166-5162</issn><eissn>1872-7840</eissn><abstract>This paper reviews the significance of solid bitumen with emphasis on source-rock reservoirs. We discuss difficulties and discrepancies with terminology, especially those terms related to the origin of solid bitumen and its physical and chemical properties. Various definitions of solid bitumen have their own justifications and can be used provided there is clarity about which defining criteria are being considered. Difficulties in conforming to chemical-, solubility-, or origin-related definitions lead us to suggest adapting the reflectance of solid hydrocarbon as a practical choice for placing the boundary between solid bitumen and pyrobitumen, and 1.50% is proposed as the boundary value. It has to be noted that this boundary may be shifted down to 1.3% for sulfur-rich kerogen. Recently, much progress has been made by combining imaging and physical adsorption techniques in porosity studies, and so the porosity of solid bitumen is given special emphasis. Comparing pore characteristics obtained from SEM versus those generated by gas adsorption, mercury intrusion, or neutron scattering techniques indicates that the SEM pore inventory fails to account for the smallest pores (<5 nm in size) present in organic matter. Therefore, low-pressure CO2 adsorption is still the most effective technique to assess microporosity (pores <2 nm in diameter) in shales. We conclude that combining observational in situ techniques with techniques based on physical principles is necessary to make progress toward a better understanding of porosity systems in organic matter, including solid bitumen.
We review the implications of the abundance of solid bitumen on reservoir quality, porosity, permeability, and producibility, based on examples of selected sequences. One of the difficulties in predicting the influence of solid-bitumen-bearing horizons on reservoir quality arises from the problems with detecting organic phases using various logging techniques. The use of specialized techniques such as NMR logging that allows two-dimensional T1 and T2 measurements should be expanded, and other potential techniques need to be further researched and tested. Certain aspects of the properties of solid bitumen that are not as well understood, such as its hydrocarbon generation potential or its role in hydrocarbon migration are also discussed with the aim of identifying further research that could lead to a better understanding of the role that solid bitumen plays in unconventional reservoirs.
•This paper reviews the significance of solid bitumen with emphasis on source-rock reservoirs.•The 1.5% solid bitumen reflectance is proposed as the boundary between solid bitumen and pyrobitumen.•Integration of various techniques is needed to improve understanding of solid bitumen porosity.•Influence of solid bitumen on reservoir quality is complex and requires further studies.</abstract><cop>United States</cop><pub>Elsevier B.V</pub><doi>10.1016/j.coal.2018.05.013</doi><tpages>23</tpages><oa>free_for_read</oa></addata></record> |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Energy & Fuels Geology Permeability Porosity Pyrobitumen Solid bitumen Solubility Unconventional |
| title | Origin, properties, and implications of solid bitumen in source-rock reservoirs: A review |
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