An Experimental Study on Carbonated Water Injection of Core Samples from Tight Oil Reservoirs from Ordos Basin (Russian)

Zou, Jiandong; Li, Xinwei; Li, Xiaoming; Zhu, Zengguo; Chu, Hongyang; Zhou, Yuan; Luo, Weiyun; Shen, Xudong

doi:10.2118/191474-18rptc-ru

Cited by 8 publications

(1 citation statement)

References 27 publications

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“…Many studies investigated the effects of water content, curing time, porosity, moisture, particle size distribution (PSD), amount and type of cement on the uniaxial compressive strength (UCS) of synthetic sandstones 2 , 10 – 17 . In addition, the results of such studies can be used in space concrete technology because the PSD ranges from 0 to 1 mm are the same for synthetic sandstones and Martian and Lunar regoliths 18 , 19 .…”

Section: Introductionmentioning

confidence: 99%

Effects of type and distribution of clay minerals on the physico-chemical and geomechanical properties of engineered porous rocks

Iranfar

Karbala

Shakiba

et al. 2023

Sci Rep

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The study of the properties of engineered rocks is of great importance to researchers in engineering sciences such as petroleum, mining, and civil engineering owing to their wide application in these fields. In the present study, a physico-chemical and geomechanical investigation was carried out on the effects of different clay minerals on porous rocks. Various chemical products formed during chemical interactions between cement, clay minerals, and water can change the pore structure and thus the rock characteristics. The results of the current study showed that increasing the clay content could remarkably reduce the porosity and permeability of the rock by an average of 86% and 6.76%, respectively. In this regard, samples containing kaolinite were further influenced due to their new pore structure. Moreover, a power relationship was found between sonic velocity and porosity, which can be used to predict rock properties. Chemical analysis indicated an amplification in quantities of chemical products, particularly calcium silicate hydrate and portlandite, due to an increase in clay content. The impacts of porosity and cementation quality as two main factors on rock strength have also been studied. The outcomes revealed that a reduction in porosity could compensate for detrimental effects of poor bond quality and consequently improved UCS by up to 30% in samples containing kaolinite, while decreasing the degree of cementation prevailed over the porosity reduction in specimens including illite and resulted in a 14% decrease in UCS. The effects of porosity and bond quality on UCS would cancel each other out in samples containing bentonite. It is worth noting that when it comes to changes in geomechanical characteristics, the dominant factor (i.e., porosity reduction or cementation quality) determines the ultimate effect of clay minerals on the properties of engineered porous rocks.

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Section: Introductionmentioning

confidence: 99%

Effects of type and distribution of clay minerals on the physico-chemical and geomechanical properties of engineered porous rocks

Iranfar

Karbala

Shakiba

et al. 2023

Sci Rep

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Experimental and Geochemical Study on Rock Wettability Alteration of Low Salinity Carbonated Water Flooding

Zou,

Tan,

et al. 2024

Springer Series in Geomechanics and Geoengineering

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Carbonated water injection: an efficient EOR approach. A review of fundamentals and prospects

Ghosh

Al-Hamairi

Jin

2019

J Petrol Explor Prod Technol

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Carbonated water injection (CWI) might be an efficient alternate to CO 2 injection technique. In CWI, CO 2 exists as a dissolved phase and not as a free phase; thus, it eliminates some challenges encountered in CO 2 injection such as poor sweep efficiency and gravity segregation. In CWI, the density and viscosity of water become higher than normal due to the CO 2 dissolution, thereby reducing the gravity segregation and channeling effect. This article is a comprehensive review on how carbonated water flooding has evolved over the time and captured salient features on the mechanisms involved in its role in enhanced oil recovery. The aspects reviewed in this article include a brief comparison of conventional CO 2 injection and carbonated water injection and the benefits thereof. Solubility of CO 2 in water, brine and oil phases is discussed in detail with valid correlations. A brief history of the development of CWI in the laboratory and field information is captured from 1905s to the present followed by the possible mechanisms and principle of CWI reported by various authors. This article also captured the latest findings on the beneficial effect of hybridizing CWI with smart water technologies.

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An Experimental Study on Carbonated Water Injection of Core Samples from Tight Oil Reservoirs from Ordos Basin (Russian)

Cited by 8 publications

References 27 publications

Effects of type and distribution of clay minerals on the physico-chemical and geomechanical properties of engineered porous rocks

Effects of type and distribution of clay minerals on the physico-chemical and geomechanical properties of engineered porous rocks

Experimental and Geochemical Study on Rock Wettability Alteration of Low Salinity Carbonated Water Flooding

Carbonated water injection: an efficient EOR approach. A review of fundamentals and prospects

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