Technology of Multistage Hydraulic Fracturing in Horizontal Wells: Development Experience of Shaly Carbonates in the US and Its Adaptation for the Fields of the Republic of Tatarstan

Хисамов, Р С; Akhmetgareev, Vadim; Khakimov, Sattor; Kenzhekhanov, Shaken

doi:10.18599/grs.19.3.6

Cited by 3 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The concentration of trace elements (TE) (Li, Ti, V, Cr, Mn, Co, Ni, Cu, Zn, Cd, Sb, Ba, Mo, Ga, Ge, As, Se, Cs, Rb, Sr, Zr, Nb, Hf, U, W, Re, Pb, Bi, Th, Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) in rock and kerogen samples was determined on a Thermo Fisher Scientific iCAP Qc ICP mass spectrometer. The method of analysis is described in ref . For analysis, rock samples were 100 mg each, and kerogen samples were 250 mg each.…”

Section: Methodsmentioning

confidence: 99%

“…Domanic deposits on the territory of Tatarstan, both with high and low OM content, are classified as poorly studied local oil-bearing horizons. The main reason for this is the complexity of the development of low-permeability carbonate reservoirs, aggravated by the presence of clay and siliceous matter as well as a high degree of their lithological heterogeneity . Existing technologies of horizontal drilling and hydraulic fracturing make it possible to extract extremely light oil from shale deposits.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Thermal Decomposition of Kerogen in High-Carbon Domanic Rock of the Romashkino Oilfield in Sub- and Supercritical Water

et al. 2022

View full text Add to dashboard Cite

The thermal decomposition of kerogen of the high-carbon Domanic rock from the Romashkino oilfield (Russia) in sub- and supercritical water (SCW) at 320, 374, and 420 °C was studied. The Rock-Eval analysis shows that the isolated kerogen from the native rock with an organic carbon (C org) content of 55.69% is a high-molecular structure (S 2 is 159.38 mg HC/g of rock) with an extremely low content of free hydrocarbons (HC) (S 1 is 0.33 mg HC/g rock). The kerogen samples contain predominantly iron-bearing minerals (pyrite, ferrihydrite, marcasite, and iron oxide), which form organomineral complexes with kerogen and are poorly soluble in acids. The subcritical water treatment of Domanic rock at 320 °C (17.0 MPa) does not lead to noticeable changes in the kerogen structure. Intensive kerogen decomposition in SCW at 374 °C (24.6 MPa) and 420 °C (24.4 MPa) is accompanied by the formation of gases, saturated and aromatic HC, as well as solid carbonaceous substances such as carbenes/carboids. According to Fourier-transform infrared (FTIR) spectroscopy, the kerogen decomposition is accompanied by a decrease in the length of its aliphatic fragments and an increase in the degree of their branching, as well as an increase in the content of aromatic carbon in comparison with aliphatic one. The number of hydrogen atoms directly associated with ring aromatic structures also decreases, which leads to an increase in the degree of condensation of the kerogen structure. Almost complete destruction of sulfur-containing bonds in the kerogen structure is observed at 420 °C (24.4 MPa), in contrast to other experiments. Electron paramagnetic resonance (EPR) analysis data indicate the destruction of vanadylporphyrin complexes with the increase in the concentration of free radicals in the kerogen structure under the SCW influence. Distinctive features of the composition and distribution of biogenic, rare-earth, and radioactive trace elements (TE) in the rock and isolated kerogen samples were revealed by inductively coupled plasma–mass spectrometry (ICP–MS). Based on the ratios of H/Cat to O/Cat on the van Krevelen diagram, hydrogen index to T max, FTIR spectral parameters (A factor to C factor) of kerogen samples, and the biomarker parameters of saturated and aromatic HC, it was determined that with an increase in the temperature and pressure of SCW, the degree of kerogen maturity increases. Changes in the pore space of the kerogen structure have been established by scanning electron microscopy: the pore size increases at 374 °C (24.6 MPa) and decreases at 420 °C (24.4 MPa) due to the contamination by carbonaceous substances, which affects the oil recovery from Domanic rocks.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermal Decomposition of Kerogen in High-Carbon Domanic Rock of the Romashkino Oilfield in Sub- and Supercritical Water

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The most common and widely used approach for developing shale deposits today is hydraulic fracturing and drilling of horizontal wells. ,− Public joint-stock company (PJSC) Tatneft has certain prospects with exploration of Domanic deposits. ,,,− Khisamov et al considered foreign experiences in the development of Shaly Carbonates in the United States using multistage fracturing technology and the possibility of adapting it for deposits in the Republic of Tatarstan. Public joint-stock company Gazprom Neft started drilling the first well with a depth of 2750 m for the production of oil shale in one of the largest oil fieldsBazhenov Formation in 2018 .…”

Section: Introductionmentioning

confidence: 99%

“…Khisamov et al 45. considered foreign experiences in the development of Shaly Carbonates in the United States using multistage fracturing technology and the possibility of adapting it for deposits in the Republic of…”

mentioning

confidence: 99%

Hydrothermal Impact on Hydrocarbon Generation from Low-Permeable Domanic Sedimentary Rocks with Different Lithofacies

et al. 2021

View full text Add to dashboard Cite

This study is intended to reveal the impact of hydrothermal treatments at temperatures of 200, 250, 300, and 350 °C on organic matter (OM) of low-permeable rocks of two different lithofacies types (carbonate and carbonate–siliceous rocks) from Domanic deposits of Upper Devonian Tatarstan. Autoclave experiments were carried out in a carbon dioxide environment. The content of OM and the yield of rock extracts, as well as the stability of kerogen structures to hydrothermal influences, were evaluated. The content of saturated hydrocarbons in the rock extracts increases after the hydrothermal transformation of kerogen and high-molecular-weight compounds, while the content of aromatic hydrocarbons and asphaltenes decreases. The results of molecular weight distribution of normal alkanes and isoprenoids show that rock extracts according to the classification of A. Petrov correspond to the A type of crude oil. Exposing hydrothermal factors on Domanic rocks at low and high temperatures provides more total extraction of hydrocarbons from rocks. The most intensive kerogen transformation process occurred at 350 °C. Hydrothermal impact on the carbonate rocks leads to almost complete transformation of kerogen with the formation of hydrocarbons, while in carbonate–siliceous rock samples, significant part of kerogen does not undergo transformation. The specific features of some biomarkers such as alkanes, aryl isoprenoids, steranes, and terpanes in petroleum products before and after hydrothermal treatment were discussed. The results indicate the general genetic nature of OM, but different geochemical conditions of its maturation in the sedimentary strata. Thus, steam injection leads to different hydrocarbon generating potential from different reservoir rocks.

show abstract

Hydrothermal Transformations of Organic Matter of Carbon-Rich Domanik Rock in Carbon Dioxide Environment at Different Temperatures

et al. 2020

View full text Add to dashboard Cite

Technology of Multistage Hydraulic Fracturing in Horizontal Wells: Development Experience of Shaly Carbonates in the US and Its Adaptation for the Fields of the Republic of Tatarstan

Cited by 3 publications

References 0 publications

Thermal Decomposition of Kerogen in High-Carbon Domanic Rock of the Romashkino Oilfield in Sub- and Supercritical Water

Thermal Decomposition of Kerogen in High-Carbon Domanic Rock of the Romashkino Oilfield in Sub- and Supercritical Water

Hydrothermal Impact on Hydrocarbon Generation from Low-Permeable Domanic Sedimentary Rocks with Different Lithofacies

Hydrothermal Transformations of Organic Matter of Carbon-Rich Domanik Rock in Carbon Dioxide Environment at Different Temperatures

Contact Info

Product

Resources

About