Causes and Analysis of Water Encroachment of Some Offshore Fields Products of Azerbaijan

Novruzova, Sudaba; Elmira, Gadashova; Ahmed, Fariz

doi:10.32014/2021.2518-170x.71

Cited by 2 publications

(1 citation statement)

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“…Most of the oil fields operated in the Republic of Azerbaijan are in the final stages of operation. 40-50% of the underground repair operations were carried out in the oil wells by the "Azneft Production Association" covering the actions connected to the influence of water and sand [1]. Flooding of the well leads to the corrosion of underground and ground equipment [2].…”

Section: Introductionmentioning

confidence: 99%

Sılıcon Based Gel to Shut-Off of Water in the Well-Bore

Huseynov

Tapdiqov

Ahmad

et al. 2023

AMR

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The quality of gel - based silicon, which forms an insulating content to prevent water and sand in oil and gas wells, have been improved. Based on the reaction between the liquid glass and hydrochloric acid, the optimal concentration of the initial reagents for the formation of the gel process was determined. The rheology, initial and final setting time of the silicon based gel, and the temperature dependencies of the gel forming process were also studied by adding 0.1-1.0% (mass ratio) of urea as cross-linking to the Na2SiO3/HCl solution. At the same time, the impact of the obtained gel of the permeability of the rock pores was determined and the filtration characteristics were studied. It has been determined that with 0.1-0.8% mass concentration of the urea added to the Na2SiO3/HCl solution, the setting time of the gel could be regulated according to the well-layer regime. The resulting silicone-based gel can be used as an injection solution that can set in 3-22 hours in oil and gas wells between the temperature of 20-80 °C.

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Section: Introductionmentioning

confidence: 99%

Sılıcon Based Gel to Shut-Off of Water in the Well-Bore

Huseynov

Tapdiqov

Ahmad

et al. 2023

AMR

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Isolation Works Against Irrigation With Gel Composition in Oil Reserves at the Final Stage of Processing

Ibadzada¹

2022

PAHTEI

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At a time of high demand for energy carriers, it is important for the dynamic and long-term development of the oil industry of the country to increase the oil yield of long-term wells using various new methods of impact, along with the discovery, development and development of new and promising facilities. For the intensive development of the economy of the Republic of Azerbaijan, it is important to increase gas and oil production from oil fields in the Caspian Sea basin and onshore. In this regard, it is important to increase the efficiency of oil production in offshore and onshore fields, to improve the development system, work with the well fund, as well as the application of artificial impact methods. Due to the complications that occurred during the development of oil fields in the country, some of the wells are either temporarily or completely removed from the exploitation fund. One of these complications is the watering of the well product. Experience in the development of oil fields with different geological and physical properties shows that premature irrigation of existing wells, geological structure of fields, ratio of oil and water viscosity in the extracted fluid, heterogeneity of layers, oil composition, volume of injection and discharge affect. At present, there is a decrease in the amount of oil in the production of offshore and onshore oil fields, and an increase in water. Although many irrigated wells are insulated and repaired to prevent irrigation, the economic and technological efficiency of these wells is insufficient. Therefore, the creation of new and effective technologies to prevent the flow of water into wells remains relevant. Premature watering of oil wells results in reductions in oil production, reduced interval between repairs in wells, and corrosion of underground and surface equipment of wells. Many researchers have noted that it is not advisable to use long-term, large-scale and economically inefficient methods to increase oil production, so the development of more layers with local impact technologies is considered promising. These methods have significant results in the isolation of irrigated areas with higher permeability. This problem can be solved in two ways: 1) Isolation of water channels with injection wells 2) Isolation of water flow to production wells Numerous studies have shown that isolating water flow in wells gives better results. The contradiction in pumping oil with injection wells is that, on the one hand, oil production must be maintained high, and on the other hand, a well with high oil production must be irrigated prematurely and subsequently reduce the phase permeability of oil. Most of the oil fields in the Republic of Azerbaijan are in the final stages of development. As a result, it is important to increase the efficiency of the development of complex oil fields by reducing the volume of associated water and increasing oil production from partially irrigated formations. The effectiveness of isolating water-washed areas with different compositions is ambiguous. Using a 10% solution of liquid glass and hydrochloric acid as the base material, it is possible to prepare an elastic buffer material to strengthen the wellbore area. It is also possible to create a gel with adjustable setting time by adding a certain amount of a third component to the initial base mixture. Preliminary studies with the added third reagents have shown that an elastic binding composite can be formed by adding urea, laprol and chromium salts to the liquid glass and hydrochloric acid solution. In subsequent studies, 0.1 to 10% Na2SiO3 and 10% HCl solution; Viscosity was measured by adding CO(NH2)2, CrCl3, KMS and Laprol at 0.5 and 1% by mass. Keywords: related water, watering rate, gel, liquid glass, urea, laprol, chromium salts, hydrochloric acid

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Causes and Analysis of Water Encroachment of Some Offshore Fields Products of Azerbaijan

Cited by 2 publications

References 1 publication

Sılıcon Based Gel to Shut-Off of Water in the Well-Bore

Sılıcon Based Gel to Shut-Off of Water in the Well-Bore

Isolation Works Against Irrigation With Gel Composition in Oil Reserves at the Final Stage of Processing

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