Investigation of fine-grained siliciclastic rocks of different clay content using thermal methods

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27350%2F20%3A10242630" target="_blank" >RIV/61989100:27350/20:10242630 - isvavai.cz</a>

Výsledek na webu

<a href="https://reader.elsevier.com/reader/sd/pii/S0920410519309520?token=C0F4AA540D8FAD55079713BF83E2D48228F98DDE02B02073A21318F4719677A672668B873175C0BFA98F0CFB37B8A577" target="_blank" >https://reader.elsevier.com/reader/sd/pii/S0920410519309520?token=C0F4AA540D8FAD55079713BF83E2D48228F98DDE02B02073A21318F4719677A672668B873175C0BFA98F0CFB37B8A577</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.petrol.2019.106531" target="_blank" >10.1016/j.petrol.2019.106531</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Investigation of fine-grained siliciclastic rocks of different clay content using thermal methods

Popis výsledku v původním jazyce

Thermal methods (simultaneous thermal analysis coupled with quadrupole mass spectrometry STA- QMS and retort) were applied to characterization of microporous rocks of different clay content. Two series of samples were investigated: highly diagenetic lower Paleozoic mudstones from Polish Lowlands and less altered Miocene and Paleocene rocks from the Carpathian Foredeep. The aim of the presented work was to differentiate between &quot;free&quot; and &quot;bound&quot; water in the pore space, to estimate the amount of fluids obtained by using retort method in regard to the distinction between free water, capillary water, clay bound water and organic matter fluids. In order to evaluate the retort results it was necessary to determine the temperatures at which a particular kind of water is released. The interpretation was based on the results of STA - QMS investigations together with XRD analysis of the mineral content, cation exchange capacity (CEC) and organic carbon content (TOC) measurements. In STA investigations the loss of mass connected with water release from clay minerals was observed in two temperature ranges: from 40 oC to 150 oC (adsorbed water) and from 440 oC to 620 oC (structural water). When analysing retort measurements, a considerable upward shift of adsorbed water release temperature can be observed. In case of Miocene and Paleocene rocks interpretation results of adsorbed water content indicate the temperature range from 150 to 450 oC, and in case of Lower Paleozoic rocks from 150 oC to 350 oC. Structural water is released at temperatures 500 oC MINUS SIGN 650 oC. A condensate connected with organic matter was observed within the temperature range 350-500 oC for Lower Paleozoic rock samples of high organic matter content (TOC&gt;2). Taking into account the methodical discrepancies, a satisfactory compliance of results obtained by both methods in regard to the volume of clay bound water and condensate connected with organic matter was found. The results show that thermal methods can be successfully used for evaluation of saturations necessary for proper estimation of reservoir properties.

Název v anglickém jazyce

Investigation of fine-grained siliciclastic rocks of different clay content using thermal methods

Popis výsledku anglicky

Thermal methods (simultaneous thermal analysis coupled with quadrupole mass spectrometry STA- QMS and retort) were applied to characterization of microporous rocks of different clay content. Two series of samples were investigated: highly diagenetic lower Paleozoic mudstones from Polish Lowlands and less altered Miocene and Paleocene rocks from the Carpathian Foredeep. The aim of the presented work was to differentiate between &quot;free&quot; and &quot;bound&quot; water in the pore space, to estimate the amount of fluids obtained by using retort method in regard to the distinction between free water, capillary water, clay bound water and organic matter fluids. In order to evaluate the retort results it was necessary to determine the temperatures at which a particular kind of water is released. The interpretation was based on the results of STA - QMS investigations together with XRD analysis of the mineral content, cation exchange capacity (CEC) and organic carbon content (TOC) measurements. In STA investigations the loss of mass connected with water release from clay minerals was observed in two temperature ranges: from 40 oC to 150 oC (adsorbed water) and from 440 oC to 620 oC (structural water). When analysing retort measurements, a considerable upward shift of adsorbed water release temperature can be observed. In case of Miocene and Paleocene rocks interpretation results of adsorbed water content indicate the temperature range from 150 to 450 oC, and in case of Lower Paleozoic rocks from 150 oC to 350 oC. Structural water is released at temperatures 500 oC MINUS SIGN 650 oC. A condensate connected with organic matter was observed within the temperature range 350-500 oC for Lower Paleozoic rock samples of high organic matter content (TOC&gt;2). Taking into account the methodical discrepancies, a satisfactory compliance of results obtained by both methods in regard to the volume of clay bound water and condensate connected with organic matter was found. The results show that thermal methods can be successfully used for evaluation of saturations necessary for proper estimation of reservoir properties.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

<a href="/cs/project/LO1406" target="_blank" >LO1406: Institut čistých technologií těžby a užití energetických surovin - Projekt udržitelnosti</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Petroleum Science and Engineering

ISSN

0920-4105

e-ISSN

—

Svazek periodika

184

Číslo periodika v rámci svazku

2020

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

14

Strana od-do

1-14

Kód UT WoS článku

000501599800079

EID výsledku v databázi Scopus

2-s2.0-85073595001