Effectiveness Research of Physical and Chemical Methods Appfication for Oil Recovery Enhancing Using the ASP for the Strutynsky Oil Field Conditions

Moroz, L. P.; Uhrynovskyi, A.V.; Popovych, Vasyl; Busko, Bohdan; Kogut, Galyna

doi:10.2478/mspe-2020-0016

Cited by 4 publications

(1 citation statement)

References 11 publications

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“…In highly fractured reservoirs the grouting composition can be absorbed with solid phase. A decrease in pressure for squeezing of grouting composition is the sign of such hydrodynamic interaction [1,2,3,4,5,6,7,8,9,10,11,12,13]. In case of absorption, drilling mud becomes oversaturated with slurry.…”

Section: Losses Of Drilling Fluids and Grouting Composi-tions During mentioning

confidence: 99%

Modern Methods of Elimination of Lost Circulation in Directional Wells

Ivanova¹,

Żabińska

2020

Management Systems in Production Engineering

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Losses of drilling mud and other fluids is the one of the major types of drilling troubles. Annual time losses for their elimination by oil and gas companies are huge. The factors, influencing the mud losses and regulating the direction of the further works, can be divided into two groups: geological and technological. Conducted studies on the use of an insulating composition based on chromium acetate made it possible to identify: the use of the insulation composition on the chrome acetate base allows considerable reduction of time required to eliminate disastrous circulation loss without installation of cement plugs; avoiding BHA replacement; avoiding drilling-in after bullheading and overlapping of lost-circulation layer; low cost, possibility of fast preparation, as it does not entail the delivery of additional chemicals, which also contributes to reduction of time required to eliminate disastrous circulation loss; the use with every type of drilling mud. Basing on the positive experience of the use of this composition in the neighboring regions and considering its economic side, the technique can be used in regions of the Udmurt Republic.

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Section: Losses Of Drilling Fluids and Grouting Composi-tions During mentioning

confidence: 99%

Modern Methods of Elimination of Lost Circulation in Directional Wells

Ivanova¹,

Żabińska

2020

Management Systems in Production Engineering

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A novel coalescing material for high efficiency oil-water separation

Cunying,

Congcong,

Fuxiang

et al. 2023

Journal of Dispersion Science and Technology

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Technological Capabilities of Well Cementing

Ivanova

Zasadzień

2021

Multidisciplinary Aspects of Production Engineering

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Cementing of casing string is a final operation before the next stage of well construction; it provides maximum operational life of the well. Cementing of casing string is carried out with the use of technology, based on squeezing of the whole volume of drilling mud by special grouting composition. The main purposes of cementing include isolation of water-bearing horizon, strengthening of borehole walls in unconsolidated and unstable rocks. Well cementing process is divided into five subsequent operations. Firstly, grouting mixture is prepared in concrete mixers (cementing units) with necessary water-to-cement ratio and additives. Secondly, prepared grouting solution is injected in a well. Thirdly, the solution is squeezed into the space between the casing pipes and wellbore walls. Then it is necessary to wait until the cement sheath is hardened. And at last, quality control is carried out. For convenient transportation, the equipment for well cementing is installed on the truck chassis (KAMAZ, URAL and etc.). All components are poured in concrete mixer, then the water is added and everything is being mixed until formation of uniform mass, which is later pumped in a well. Oil and Gas Industry Safety Regulations say that «calculated endurance of casing string cementing should not exceed 75% of time of cement thickening, established by laboratory tests». Therefore, it is necessary to carry out all operations of injection of fluids into the well as soon as possible without any incompliances of the cementing technology. With cementing material used and its water-to-cement ratio of 0.5, the average time of cement thickening is 120 minutes, according to laboratory tests. Therefore, a set of operations of injection of fluids should not exceed 90 minutes.

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Effectiveness Research of Physical and Chemical Methods Appfication for Oil Recovery Enhancing Using the ASP for the Strutynsky Oil Field Conditions

Cited by 4 publications

References 11 publications

Modern Methods of Elimination of Lost Circulation in Directional Wells

Modern Methods of Elimination of Lost Circulation in Directional Wells

A novel coalescing material for high efficiency oil-water separation

Technological Capabilities of Well Cementing

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