Substantiation of a well killing technology for fractured carbonate reservoirs

Islamov, Shamil; Bondarenko, A. V.; Mardashov, D.V.

doi:10.1201/9780429327070-35

Cited by 10 publications

(8 citation statements)

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“…The practical application of existing calculation methods is usually associated with a large number of computational operations and the difficulty of determining the distribution functions of the complete profile. Particular difficulties are associated with the study of industrial apparatus with a high reaction volume and a low volumetric flow rate [42,43].…”

Section: Cstr Modelmentioning

confidence: 99%

“…To determine the number of reactors in the case of a tubular rotary kiln for coke calcination, we will use the data processing results obtained during the experiment. A tubular rotary kiln consists of three zones, serving as an example of the CSTR in-series model (Figure 1) parameter determination method described in [43]. To determine the number of reactors in the case of a tubular rotary kiln for coke calcination, we will use the data processing results obtained during the experiment.…”

Section: Cstr Modelmentioning

confidence: 99%

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An Interval-Simplex Approach to Determine Technological Parameters from Experimental Data

Белоглазов

Krylov

2022

Mathematics

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Statistical equations are widely used to describe the laws of various chemical technological processes. The values of constants and parameters included in these equations are determined by various methods. Methods that can determine the values of equation parameters using a limited amount of experimental data are of particular practical interest. In this manuscript, we propose a method to obtain simplex-interval equations. The proposed approach can be effectively used to control the values of technological process parameters. In this paper, we consider examples of chemical kinetics equation transformations and heterogeneous processes of solid particle dissolution. In addition, we describes mathematical model transformations, including equations for functions of the residence time distribution (RTD) of apparatus particles, the distribution of particles by size, etc. Finally, we apply the proposed approach to an example involving modeling of the calcination of coke in a tubular rotary kiln.

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Section: Cstr Modelmentioning

confidence: 99%

Section: Cstr Modelmentioning

confidence: 99%

An Interval-Simplex Approach to Determine Technological Parameters from Experimental Data

Белоглазов

Krylov

2022

Mathematics

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“…Most often, the main reason for the increase in the viscosity of polymer solutions is the intermolecular interaction of macromolecules with each other. If the properties of dilute polymer solutions do not increase critically, then with a growth in the polymer concentration, a rapid and significant rise in the structural and rheological properties of their solutions occurs [38]. The mechanism of a rapid and significant rise in the rheological characteristics of a HEC solution is determined by its chemical structure of the primary structural link shown in Figure 3.…”

mentioning

confidence: 99%

“…Because of this, HEC molecules are intermolecularly intertwined in the aqueous phase, which in turn leads to an increase in viscosity and gelation. With a further increase in the concentration of HEC, an increase in viscosity and gelation occurs, in this case, water molecules form an ordered structure around the HEC molecule and thereby lead to a multiple increase in structural and rheological characteristics [38].…”

mentioning

confidence: 99%

“…In the practice of oil and gas well construction, rheological parameters included in the Bingham-Shvedov equation are most widely used: limiting dynamic shear stress, plastic viscosity, and structural characteristics are estimated from static shear stress for 10 min and 10 s. The optimal ratio is [38]: DSS PV ≥ 1 ÷ 1.5 (performed only when calculating in units of the API Standard)…”

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confidence: 99%

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Salt Deposits and Brine Blowout: Development of a Cross-Linking Composition for Blocking Formations and Methodology for Its Testing

et al. 2022

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Uncontrolled inflow of formation fluid (brine) into a well adversely affects the cation–anion bonds in solutions and leads to their dissociation and loss of aggregative stability. Blow-out significantly complicates the drilling process and leads to an increase in non-productive time and in financial costs for problem solving. It is necessary to create a blocking screen that allows separation of the layer from the well and prevents brine flow. This article is devoted to the development of polymeric-blocking compositions that work due to the crystallization reaction of divalent salts of calcium and magnesium chlorides. More than 14 components were detected in the formation fluid on the atomic emission spectrometer. Based on the study of the compatibility of components with brine and the study of rheology and filtration processes through a real core under HPHT conditions, the optimal component polymer composition was selected. The reason for the increase in the rheology of composition during its thickening was established. With the help of tomographic studies, the depth of penetration of the filtrate into the core of layers was determined. For further studies, an experimental stand was designed for physical simulation of the isolation process under HPHT conditions and backpressure from the formation.

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Manifestation of incompatibility of marine residual fuels: a method for determining compatibility, studying composition of fuels and sediment

Sultanbekov

Schipachev

2022

PMI

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The results of studying the problem of active sediment formation when mixing residual fuels, caused by manifestation of incompatibility, are presented. A laboratory method has been developed for determining the compatibility and stability of fuels allowing identification of a quantitative characteristic of sediment formation activity. Laboratory studies were performed, and incompatible fuel components were identified. Tests were made to determine the quality indicators of samples and group individual composition of fuels. Results on the content of total and inorganic carbon in the obtained sediments were determined using Shimadzu TOC-V SSM 5000A. Chemical composition was determined and calculated on LECO CHN-628 analyser. Group composition of hydrocarbon fuels contained in the sediment was studied by gas chromato-mass spectrometry on GCMS-QP2010 Ultra Shimadzu. To obtain additional information on the structural group composition of fuel sediment, IR spectrometry was performed on IR-Fourier spectrometer IRAffinity-1. X-ray diffraction analysis of sediment samples was made using X-ray diffractometer XRD-7000 Shimadzu; interplanar distances d002 and d100 as well as Lс and Lа crystallite sizes served as the evaluation criteria. Microstructural analysis of total sediment was performed by scanning electron microscopy. The results of the research confirmed that the content of normal alkanes in the fuel mixture mainly affects sediment formation. Recommendations were drawn on preserving the quality of fuels and reducing sediment formation during storage and transportation.

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Substantiation of a well killing technology for fractured carbonate reservoirs

Cited by 10 publications

References 0 publications

An Interval-Simplex Approach to Determine Technological Parameters from Experimental Data

An Interval-Simplex Approach to Determine Technological Parameters from Experimental Data

Salt Deposits and Brine Blowout: Development of a Cross-Linking Composition for Blocking Formations and Methodology for Its Testing

Manifestation of incompatibility of marine residual fuels: a method for determining compatibility, studying composition of fuels and sediment

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