Improvement of operational efficiency of high water-cut oil wells

Raupov, I R; Milic, J

doi:10.1088/1755-1315/1021/1/012077

Cited by 4 publications

(3 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The regression coefficients are indicators that define the accuracy of the models in fitting the experimental data. It is obvious that most of the developed models have high regression coefficients; this indicates that the developed models can efficiently describe the experimental data [35][36][37]. The adopted mathematical models derived in this work suggest that the amount of natural gas that is evolved from, and dissolved in, reservoir fluids in the investigated region depend on the characteristics of the reservoirs.…”

Section: Resultsmentioning

confidence: 86%

Correlations between Petroleum Reservoir Fluid Properties and Amount of Evolved and Dissolved Natural Gas: Case Study of Transgressive–Regressive-Sequence Sedimentary Rocks

Kamal,

Salih,

Martyushev

2023

JMSE

View full text Add to dashboard Cite

It is well recognized that PVT data are essential in oil and gas production facilities as well as in the determination of the reservoir fluid composition in reservoir engineering calculations. In the current work, the studied borehole is located in Tawke oilfield in the High Folded Zone. The structural geology and lithological facies of rocks are studied and found to comprise fine crystalline dolomite and anhydrite interbedded with claystone and dolomite. In addition, the practical PVT data of black oil from Tawke oilfield, Zakho, from reservoirs to transgressive–regressive cycles, are studied. The PVT data are investigated to derive the empirical models that rule and correlate the properties of the reservoir fluids in terms of the amount of natural gas (methane, ethane, and propane) dissolved in reservoir fluids and evolving from the wells. The characteristics of the reservoir fluid, including °API, viscosity at reservoir pressure and bubble-point pressure, reservoir pressure and temperature, gas–oil ratio (GOR), coefficient of compressibility at reservoir pressure, gross heating value, and sample depth, are correlated. The lithological part reveals that the carbonate and some clastic rock facies are conducive to enhancing natural gas adsorption. The reservoir fluid properties show adverse effects on the amount of natural gas constituents evolving from the wells, while it shows positive effects on the dissolved reservoir fluids. The estimated empirical correlations can help indicate the quantity of natural gas that is dissolved in reservoir fluids and liberated from the wells depending on the characteristics of the reservoir. In addition, they can be used in numerical simulators to predict oil well performance.

show abstract

Section: Resultsmentioning

confidence: 86%

Correlations between Petroleum Reservoir Fluid Properties and Amount of Evolved and Dissolved Natural Gas: Case Study of Transgressive–Regressive-Sequence Sedimentary Rocks

Kamal,

Salih,

Martyushev

2023

JMSE

View full text Add to dashboard Cite

show abstract

“…The group of reasons for premature watering of wells should also include the circulation of liquid behind the casing, caused by violations of the technical condition of the well due to regular wear and external influences, geological factors or incorrect operations during major and routine well repairs [14][15][16]. Column circulation includes a large list of manifestations of this complication, which can be represented by the classification implemented in Table 1.…”

Section: Methodsmentioning

confidence: 99%

Analysis of the causes of flooding of long-term deposits under conditions of high geological heterogeneity

Gilyazetdinov,

Vafin,

Kuleshova

et al. 2024

E3S Web of Conf.

View full text Add to dashboard Cite

In this work, the object of research was the long-term deposits of liquid hydrocarbons located within the boundaries of fields with high geological heterogeneity, the proportion of which is actively increasing every year due to the selection of a significant part of the “light” oil reserves. Based on the generalization of the results of direct and indirect research on the topic of the work, the key causes of well flooding were identified and their primary sources were identified, which made it possible to successfully describe the mechanisms of formation of the transition zone of the oil-water system, depending on the stage of development. The conclusion is made about the importance of applying relevant and reliable scientific and methodological approaches in interpreting the results of geophysical research to solve various problems of oil field development.

show abstract

“…Sand production depends on the water/oil/gas distribution in the total flow of the fluid (9,10). Some researchers argue that this is solely a problem of arch stability (11), whilst others argue that this is an issue of wetting and chemical reactions (12) or strain softening due to water incorporating into the rock matrix (13).…”

Section: Introductionmentioning

confidence: 99%

Scientific and Methodological Support of Sand Management During Operation of Horizontal Wells

Tananykhin

2024

IJE

View full text Add to dashboard Cite

The paper presents a new scientifically based approach for the selection of sand control technology, which is dedicated to enhance the efficiency of the development of unconsolidated reservoirs. Established laboratory and methodological complexes for physical simulating of the sand producing process were analyzed in order to obtain new knowledge and confirm the available theories. All of them have their advantages and disadvantages, but their simultaneous application revealed characteristic dependencies between the sand production and the studied parameter (grain size distribution, pressure drop, clay content, water cut, gas/oil ratio, etc.). Author proposed concepts of mathematical apparatus improvement to increase the quality of assessing the ability of formation fluids to transport particles of different grain size distribution within the formation, as well as in the inner part of tubing. The effect of each of the characterizing factors on suspended solids concertation (SSC) was studied as a result of more than 300 laboratory experiments. According to the observation, there is a sharp decrease in SSC after the first stage (sampling). Thus, the author determined that the main inflow of mechanical impurities occurs during flow stimulation and after shutdowns. In conclusion, author substantiated the method for limiting sand production using polymers with shape memory based on the results of the performed set of tests. Proposed method allows limited passage of particles with diameter less than 50 µm, which creates conditions for noncolmaticity of screen while maintaining geomechanical stability of bottom-hole formation zone.

show abstract

Improvement of operational efficiency of high water-cut oil wells

Cited by 4 publications

References 13 publications

Correlations between Petroleum Reservoir Fluid Properties and Amount of Evolved and Dissolved Natural Gas: Case Study of Transgressive–Regressive-Sequence Sedimentary Rocks

Correlations between Petroleum Reservoir Fluid Properties and Amount of Evolved and Dissolved Natural Gas: Case Study of Transgressive–Regressive-Sequence Sedimentary Rocks

Analysis of the causes of flooding of long-term deposits under conditions of high geological heterogeneity

Scientific and Methodological Support of Sand Management During Operation of Horizontal Wells

Contact Info

Product

Resources

About