Risultati della ricerca - "horizontal wells"

Background. The production of oil and gas by horizontal wells, despite all its advantages, is subject to exploratory and operational complications. At the final stage of their development, such fields become hard-to-recover reserves. Production of oil and gas is often associated with a high water cu...

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Computer aided design of a horizontal well without flush tubes providing optimal operating conditions with regard to varying pressure along horizontal well length, to the presence of deviated and slant segments is considered. As a result a well-head pressure - flow rate plot is computed. Allowable v...

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There is a view on the issue of calculating gas inflow towards a multi-barrelled horizontal well in a strip bed. There is a mathematical model combining a joint solution for an equation of gas filtration in the bed and the equations to describe gas flow within the barrels of the horizontal well. The...

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ABSTRACT In the drilling process of large‐offset three‐dimensional (3D) horizontal wells, the issue of cuttings transport is a critical concern for wellbore cleanliness and downhole safety. Significant accumulation of cuttings can lead to various downhole accidents, such as excessive torque and drag...

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The efficiency of using horizontal drilling technology largely depends on a number of factors, including the geological structure of the productive formation, fracturing, anisotropy, heterogeneity, porosity, and permeability. This necessitates the design of the process of oil inflow to the horizonta...

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The paper is devoted to the problem of increasing the effectiveness of temperature logging quantitative interpretation for the inflow profile evaluation in horizontal production wells draining heterogeneous reservoirs with low permeability. Such wells are characterized by an extremely uneven distrib...

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This paper presents the results of geological and production analysis of development and reserves of the pilot area using the results of dynamic marker monitoring of horizontal wellbores of production wells using high-precision indicators. As part of the research, the geological structure of the res...

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The development of inter-well channeling pathways has become a major challenge restricting the effectiveness of the thermal recovery process for heavy oil reservoirs, which leads to non-uniform sweep and reduced oil recovery. This is especially true for the characteristics of the higher injection–pr...

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With the unconventional energy sector (e.g., shale gas) increasingly focused on precision drilling and cost-effective extraction, slim-hole horizontal well technology is gaining prominence. However, drill string dynamics in narrow, complex fluid environments are not fully understood. This study pres...

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In view of the difficult problem of strip gas extraction in coal roadways of broken soft and low permeability coal seam, this paper puts forward the technology of segment fracturing and high efficient pre-gas extraction in horizontal wells of strip roof of coal roadways of coal roadways.For balanced...

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To achieve a refined evaluation of the effect of hydraulic fracturing in surface horizontal wells, the characteristics of the drilling construction layers of the U1 and U2 horizontal sections in Zhujidong Coal Mine were analyzed. The fracturing effects of different layers in each section of the U1 a...

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Horizontal wells have revolutionized hydrocarbon production by enhancing recovery efficiency and reducing environmental impact. This paper presents an enhanced Black Oil Model simulator, written in Visual Basic, for three-dimensional two-phase (oil and water) flow through porous media. Unlike most e...

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The boundary value problem of transient pressure field development around a horizontal well in a laterally infinite, inhomogeneous, anisotropic reservoir is formulated under assumption of slow spatial variation of the matrix permeability along the well axis. The well is represented as a linear fluid...

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Introduction. The article presents the results of experimental studies of the applicability of the method of regular thermal labels for solving practical problems in a horizontal well. According to the obtained results the estimation of the minimum and maximum gauge length between two adjacent contr...

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Some features of washing technology and development after selective fracturing in Western Siberia. For greater efficiency fracturing operation necessary to carry out multi-stage hydraulic fracturing in horizontal wells. The analysis concluded that that involves tacitly adopted by the procedure of en...

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In order to solve the problems of long extraction time of surface wells in the preparation area of close distance coal seam group and difficult connection of underground boreholes, which lead to the overall imbalance of mine extraction-excavation-mining and limited production capacity. Taking Shaqu...

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The article describes a numerical-analytical model for gas breakthrough to a well during the development of oil fields with a gas cap using horizontal wells. The employed semi-analytical model allows describing the process of gas cone development and reproducing oil and gas production parameters fro...

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Multi-stage fractured horizontal wells (MSFHWs) represent a crucial development approach for low-permeability reservoirs, where accurate productivity prediction is essential for production operations. However, existing models suffer from limitations such as inadequate characterization of complex flo...

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To date, significant foreign and domestic experience has been accumulated in the construction and operation of horizontal, multilateral and multilateral wells, as well as the restoration of an idle well stock by drilling sidetracks and sidetracks into various productive formations: low-permeability...

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