Methods of Predicting the Effectiveness of Hydrochloric Acid Treatment Using Hydrodynamic Simulation

Putilov, I.S.; Krivoshchekov, Sergey; Vyatkin, Kirill; Kochnev, Alexander; Ravelev, K. A.

doi:10.3390/app10144828

Cited by 13 publications

(7 citation statements)

References 15 publications

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“…Introduction. Acid treatment is currently the most widely used method of oil production stimulation in the petroleum industry [1][2][3][4][5][6][7][8]. Acid treatment is carried out by injecting acid solutions into the formation to dissolve rock minerals in order to expand existing and create new fractures, increase the overall permeability, and therefore the productivity of the well.…”

Section: Nas Rk Is Pleased To Announce That News Of Nas Rk Series Of Geology and Technical Sciences Scientific Journal Has Been Accepted mentioning

confidence: 99%

Results of Laboratory Studies of Acid Treatment of Low-Permeability Rock Cores

Soltanbekova¹,

Assilbekov²,

Zolotukhin³

et al. 2021

SGTS

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E d i t o r i n c h i e f ZHURINOV MuratZhurinovich, doctor of chemistry, professor, academician of NAS RK, president of the National Academy of Sciences of the Republic of Kazakhstan, general director of JSC "Institute of fuel, catalysis and electrochemistry named after D.V. Sokolsky» (Almaty, Kazakhstan) H = 4 E d i t o r i a l b o a r d: ABSAMETOV Malis Kudysovich, (deputy editor-in-chief), doctor of geological and mineralogical sciences, professor, academician of NAS RK, director of the Akhmedsafin Institute of hydrogeology and hydrophysics (Almaty, Kazakhstan) H = 2 ZHOLTAEV Geroy Zholtaevich, (deputy editor-in-chief), doctor of geological and mineralogical sciences, professor, director of the institute of geological sciences named after K.I. Satpayev (Almaty, Kazakhstan) Н=2 SNOW Daniel, Ph.D, associate professor, director of the labotatory of water sciences, Nebraska University (Nebraska, USA) H = 32 Zeltman Reymar, Ph.D, head of research department in petrology and mineral deposits in the Earth sciences section of the museum of natural history (London, England) H = 37 PANFILOV Mikhail Borisovich, doctor of technical sciences, professor at the Nancy University (Nancy, France) Н=15 SHEN Ping, Ph.D, deputy director of the Committee for Mining geology of the China geological Society, Fellow of the American association of economic geologists (Beijing, China) H = 25 FISCHER Axel, Ph.D, associate professor, Dresden University of technology (Dresden, Germany) H = 6 KONTOROVICH Aleksey Emilievich, doctor of geological and mineralogical sciences, professor, academician of RAS, Trofimuk Institute of petroleum geology and geophysics SB RAS (Novosibirsk, Russia) H = 19 ABSADYKOV Bakhyt Narikbaevich, doctor of technical sciences, professor, corresponding member of NAS RK, Bekturov Institute of chemical sciences (Almaty, Kazakhstan) H = 5 AGABEKOV Vladimir Enokovich, doctor of chemistry, academician of NAS of Belarus, honorary director of the Institute of chemistry of new materials (Minsk, Belarus) H = 13 KATALIN Stephan, Ph.D, associate professor, Technical university (Dresden, Berlin) H = 20 SEITMURATOVA Eleonora Yusupovna, doctor of geological and mineralogical sciences, professor, corresponding member of NAS RK, head of the laboratory of the Institute of geological sciences named after K.I. Satpayev (Almaty, Kazakhstan) Н=11 SAGINTAYEV Zhanay, Ph.D, associate professor, Nazarbayev University (Nursultan, Kazakhstan) H = 11 FRATTINI Paolo, Ph.D, associate professor, university of Milano-Bicocca (Milan, Italy) H = 28 News of the National Academy of Sciences of the Republic of Kazakhstan. Series of geology and technology sciences.

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Section: Nas Rk Is Pleased To Announce That News Of Nas Rk Series Of Geology and Technical Sciences Scientific Journal Has Been Accepted mentioning

confidence: 99%

Results of Laboratory Studies of Acid Treatment of Low-Permeability Rock Cores

Soltanbekova¹,

Assilbekov²,

Zolotukhin³

et al. 2021

SGTS

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“…These methods may be classified into thermal, chemical, physical, and mechanical. The thermal methods are based on heating the oil above the IPCT temperature followed by the dissolution of the wax component of the fluid, preventing its recovery from the fluid volume (Putilov, et al, 2020;Revel'-Muroz et al, 2017 Reza andFarzaneh, 2007) The chemical methods assume the application of the reagents preventing the AD formation (inhibitor reagents) or the substances that eliminate the existing deposits (hydrocarbon solvents, detergents) (Robinson and Peng, 1976;Shaislamov, et al, 2007;Shrajbman, et al, 2008). The physical meth-ods require various physical fields (magnetic, acoustic, ultrasound, electric) and mechanic deposit removal methods (Turbakov, et al, 2009;Volodin, et al, 2008).…”

Section: Determination Of Technological Efficiency Of the Counter-ad Technologies Used In The Hollow Rod Stringsmentioning

confidence: 99%

“…At present, a crucial task for oil production enterprises is to improve the profitability of oilproducing wells operation in the context of decreasing hydrocarbon production rates and increased proportion of difficult oil fields with production zones featuring low permeability, low net oil pay values, and complicated pore volume structure, which raise the question of employing the technologies for increasing the technical and economic efficiency of the development of oil fields (Bahgizin et al, 2019;Shaislamov et al, 2007;Putilov, I. et al, 2020). Among such technologies is dual operation (DO) of multi-zone wells.…”

Section: Introductionmentioning

confidence: 99%

An Approach to Estimating the Rate of Organic Deposit Formation in a Hollow Rod String and Selection of Methods for Deposit Prevention

Krivoshchekov¹,

Vyatkin²,

Kochnev³

et al. 2021

PTQ

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Background. There is currently a lack of a methodology that can enable highly-precise determinations of rates of asphaltene deposit (AD) formations in case of dual operation of two oil reservoirs via a single multi-zone oil-producing well using small-bore hollow rods as part of downhole pumping equipment. This methodology aims to minimize the costs of oil and gas companies for servicing such oil wells and preventing their failure. Aims. Creating a methodology aimed at accurate quantitative estimations of the organic deposit formation rates at the inner part of the hollow rod strings. Methods. Calculations of temperature distributions along the hollow rod string inner surface; graphic presentations of the calculated data; laboratory tests using a Cold Finger unit for the selected sections of the hollow rod strings and the graphic presentations of the results. Results and Discussion. The suggested algorithm was field-tested at a target multi-zone oil-producing well of Pavlovka oil field in Perm Krai of the Russian Federation. Using the suggested algorithm, a variation in organic deposit formation rates along the hollow rod string length was evaluated, and the depth of the maximum deposit formation rate was determined. To prevent the deposits in question along the hollow rod string at a target oil-producing well of Pavlovka oil field, laboratory tests were conducted to determine the efficiency of employing the chemical technology, i.e., the use of AD inhibitors, as well as a technology for the removal of the formed deposits using AD solvents. Conclusions. The proposed algorithm is more accurate and requires less time and money compared to existing algorithms. It enables the most effective evaluation of the formation depth of the organic deposits and the intensity at these marks. When evaluating the laboratory studies results, it can be noted that the use of the considered technologies to eliminate organic deposits is highly effective and can be used for this purpose.

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“…For more extensive coverage of the results and to accurately establish the factors that affect the amount of AC when forming a 'wormhole', tests were conducted on 27 samples from the target facility. The acid composition was selected based on the analytical review of scientific works, FLUXOCORE-210 has been selected as the most effective acid composition that delivered proven application results [27]. According to obtained field data, it is assumed that the following factors influence the determination of the AC volume in the pore volume at breakthrough VAC: − Karboncarbonate content of a rock sample (%); − qrate of acid composition injection into a core sample (cm 3 /min); − Pinjmaximum excess pressure of acid composition injection into a core sample (MPa); − kpcoefficient of absolute gas permeability of a core sample before treatment (10 -3 μm 2 ).…”

Section: Effectiveness Factors In Acid Treatmentmentioning

confidence: 99%

Influence of Geological and Technological Parameters on Effectiveness of Hydrochloric Acid Treatment of Carbonate Reservoirs

Krivoshchekov

Vyatkin

Ravelev

et al. 2020

IJE

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Hydrochloric acid treatment is the most common oil production stimulation treatment to date. Yet, most of operations fail to deliver the targeted results. For a more competent design of acid treatment of carbonate reservoirs, flow studies on core samples are conducted preliminary to determine the most effective acid composition and the technology of its injection into formation. The authors believe that, at present, processing of flow research results is incorrect, as not all parameters are taken into account when making recommendations. This study examined the influence of geological and technological parameters on effectiveness of hydrochloric acid treatment. In the course of studies using the flow unit and X-ray tomography, a number of factors have been identified that affect the outcome of the treatment. The volume of acid composition required to create a highly conductive channel in a core sample is a parameter using which it is possible to conduct a comparative analysis of effectiveness of the acid compositions under test and the methods of their injection. Therefore, exactly this parameter is used as a core in this paper, based on which the authors have derived an integrated indicator that provides for the most reliable evaluation of the flow study results. Using this indicator, it is possible to provide more competent recommendations as to the choice of acid compositions and the technology of oilfield hydrochloric acid treatments, which will provide the greatest effect of the planned operations to enhance oil recovery.

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Methods of Predicting the Effectiveness of Hydrochloric Acid Treatment Using Hydrodynamic Simulation

Cited by 13 publications

References 15 publications

Results of Laboratory Studies of Acid Treatment of Low-Permeability Rock Cores

Results of Laboratory Studies of Acid Treatment of Low-Permeability Rock Cores

An Approach to Estimating the Rate of Organic Deposit Formation in a Hollow Rod String and Selection of Methods for Deposit Prevention

Influence of Geological and Technological Parameters on Effectiveness of Hydrochloric Acid Treatment of Carbonate Reservoirs

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