Experimental Studies of Efficient Wells Completion in Depleted Gas Condensate Fields by Using Foams

Volovetskyi, V.B.; Doroshenko, Ya. V.; Karpash, Oleh; Shсhyrba, Oksana; Matkivskyi, Serhii; Ivanov, O.; Protsiuk, Halyna

doi:10.2478/scjme-2022-0031

Cited by 5 publications

(2 citation statements)

References 16 publications

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“…At the enterprises of JSC "Ukrgazvydobuvannya" to ensure the stabilization of hydrocarbon production, various measures are being developed, which are aimed at preventing possible complications, in particular, the accumulation of liquid in the well flowlines, as well as the formation of hydrates. Thus, to prevent the accumulation of liquid pollution in the inner cavity of the well flowlines, it is advisable to periodically clean them by creating a high-speed gas flow [3][4], using a surfactant solution [5][6], using foam of different multiplicity [7][8] and other methods . The optimal method should be chosen based on experimental studies.…”

Section: Introductionmentioning

confidence: 99%

Well Rehabilitation is a Promising Area for Increasing Hydrocarbon Production

Piatkivskyi,

Stavychnyi,

Femiak

et al. 2024

Strojnícky Časopis - Journal of Mechanical Engineering

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This article provides a general description of the potential for increasing hydrocarbon production in Ukraine through the restoration of oil and gas wells by drilling sidetracks, based on an analysis of the fields resource potential. The main factors for selecting candidate wells for sidetracking are described. Each stage of well selection set during the design and direct drilling operations is supported by practical results. The main technical and technological solutions for well rehabilitation are described, taking into account the possibility of minimizing the cost of sidetrack drilling. The approaches to selecting and designing a sidetracked well profile are analyzed in detail. The technological scheme for drilling a sidetrack and the layout of the bottom of the drill string are substantiated. An algorithm for calculating the required length of weighted drill pipes and the length of the casing exit for sidetracking is presented. The peculiarities of using drilling fluids for deepening wells with an assessment of the impact on the coefficient of core permeability recovery are presented. The requirements for high-quality well casing are analyzed on the basis of an assessment of the possibility of running the casing in certain areas of sharp changes in the curvature parameters when drilling a well with a small-sized rock-destroying tool. The main functional criteria of the applied buffer systems are characterized and the necessity of using sedimentation-stable dispersion-reinforced grouting systems for high-quality cementing of sidetracks in conditions of small annular gaps is substantiated.

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Section: Introductionmentioning

confidence: 99%

Well Rehabilitation is a Promising Area for Increasing Hydrocarbon Production

Piatkivskyi,

Stavychnyi,

Femiak

et al. 2024

Strojnícky Časopis - Journal of Mechanical Engineering

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“…At present, most hydrocarbon fields in Ukraine are depleted and nearing the final stage of development. During this stage, a considerable amount of formation water and hydrocarbon condensate is produced alongside the gas flow [1][2][3], leading to the accumulation of liquid contaminants in low points of gas gathering and processing pipeline systems. These accumulations pose substantial hydraulic resistance, resulting in increased pressure losses, reduced pipeline capacity, and decreased the recovery of hydrocarbon volumes.…”

Section: Introductionmentioning

confidence: 99%

Experimental Studies on the Dynamics of the Movement of Cleaning Pigs Through Tee Pipe Fittings

Stetsiuk,

Bondarenko,

Doroshenko

et al. 2024

Strojnícky Časopis - Journal of Mechanical Engineering

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Experimental setups using steel and transparent glass pipes, along with equally spaced steel stamped and transparent plastic tees, were designed for testing. The experimental results provided insights into the influence of flow directions, pig length, material properties, and air consumption on the dynamics and strength of the pigs within the tees. Furthermore, the study identified the causes of temporary halting, jamming, and the mechanisms of damage to cylindrical pigs made of hyperelastic materials within pipeline tees.

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Development of methods for predicting hydrate formation in gas storage facilities and measures for their prevention and elimination

Volovetskyi¹,

Doroshenko

Matkivskyi³

et al. 2023

Journal of Achievements in Materials and Manufacturing Engineering

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The purpose of this work is to study the processes of hydrate formation during the operation of wells and underground gas storage facilities. Development of a set of measures aimed at the prediction and timely prevention of hydrate formation in wells and technological equipment of gas storage facilities under different geological and technological conditions.The prediction of hydrate formation processes was carried out using a neural network that is a software product with weight factors calculated in MATLAB environment and the ability to adapt parameters of the network specified to updated and supplemented input data during its operation. So, within the MATLAB software environment, a software module of a two-layer artificial neural network with a random set of weight factors is created at the first stage. In the second stage, the neural network is trained using experimental field input/output data set, output data. In the third stage, an artificial neural network is used as a means of predicting hydrate formation with the ability to refine weight factors during its operation subject to obtaining additional updated data, as an input set, for modifying the coefficients and, accordingly, improving the algorithm for predicting of an artificial neural network. In the absence of new data for the additional training of an artificial neural network, it is used as a computing tool that, on the basis of input data about the current above-mentioned selected technological parameters of fluid in the pipeline, ensures the output values in the range from 0 to 1 (or from 0 to 100%), that indicates the probability of hydrates formation in the controlled section of the pipeline. Application of such an approach makes it possible to teach; additionally,, that is, to improve the neural network; therefore this means of predicting hydrate formations objectively increases reliability of results obtained in the process of predicting and functioning of the system.The authors of the work recommend to carry out an integrated approach to ensure clear control over the operation mode of wells and gas collection points.According to the results of experimental studies, the places of the most likely deposition of hydrates in underground gas storage facilities were identified, in particular, in the inside space of the flowline in places of accumulation of liquid contaminants (lowered pipeline sections) and an adjustable choke of the gas collection point. The available methods used to prevent and eliminate hydrate formation both in wells and at gas field equipment were analyzed. Such an analysis made it possible to put together a list of methods that are most appropriate for the conditions of gas storage facilities in Ukraine.The method of predicting hydrate formation in certain sections of pipelines based on algorithms of artificial neural networks is proposed. The developed methodology based on data on values of temperatures and pressures in certain sections of pipelines allows us to predict the beginning of the hydrate formation process at certain points with high accuracy and take appropriate measures.To increase the efficiency of solving the problem of hydrate formation in gas storage facilities, it is expedient to introduce new approaches to timely predict complications, in particular, the use of neural networks and diverse measures.Implementation of the developed predicting methodology and methods and measures to prevent and eliminate hydrate formation in wells and technological equipment in underground gas storage facilities will increase the operation efficiency of underground gas storage facilities.The use of artificial intelligence to predict hydrate formations in flowlines of wells and technological equipment of underground gas storage facilities is proposed. Using this approach to predict and functionthe system as a whole ensures high reliability of the results obtained due to adaptation of the system to the specified control conditions.

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Experimental Studies of Efficient Wells Completion in Depleted Gas Condensate Fields by Using Foams

Cited by 5 publications

References 16 publications

Well Rehabilitation is a Promising Area for Increasing Hydrocarbon Production

Well Rehabilitation is a Promising Area for Increasing Hydrocarbon Production

Experimental Studies on the Dynamics of the Movement of Cleaning Pigs Through Tee Pipe Fittings

Development of methods for predicting hydrate formation in gas storage facilities and measures for their prevention and elimination

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