Offshore Caspian Sea: Appraisal Well Monitoring Using Inflow Tracer Technology

2021 ◽  
Author(s):  
Artem Galimzyanov ◽  
Orkhan Heydarov ◽  
Bakhtiyar Jafarov ◽  
Rufat Mirzayev ◽  
Kamal Kamalov ◽  
...  
Keyword(s):  
Caspian Sea ◽  
Flow Distribution ◽  
Well Testing ◽  
Well Performance ◽  
Distributed Temperature Sensing ◽  
The Caspian Sea ◽  
Field Development ◽  
Multiple Sampling ◽  
Production Wells ◽  
Transient Data

Abstract A gas condensate field development in the offshore Caspian Sea experienced monitoring challenges and costly operations. In regular field-wide surveillance it is a challenging task to evaluate the numerous well monitoring options on the market, such as production logging, permanent downhole gauges, and distributed temperature sensing along the wellbore. These solutions require wellbore interventions and introduce operational risk during well logging or completion installation risk when fiber is installed. Permanently installed inflow tracer technology is an alternative monitoring solution which avoids the above-mentioned risks but still obtain valuable inflow information concerning well performance over several years. An appraisal well in the field was selected to pilot inflow tracing technology for assessment of reserves and productivity, for the first time in the Caspian Sea. Multiple sampling campaigns to capture the data was incorporated into a well testing programme to complement the pressure transient data collection and interpretation. The inflow tracer interpretations were successful in providing additional insight towards clean-up efficiency and flow distribution between zones. The latter was verified later by production logging, strengthening confidence with inflow tracer technology. The application of the permanent inflow tracers has proven to be a viable alternative to other well monitoring solutions without any risk and will become an effective long-term monitoring solution for planned production wells in the field development.

scholarly journals Combustion of Hydrogen Sulfide-Containing Oil on the Surface of the Water and Possible Applications of Combustion Method at Sea

2017 ◽  
Vol 19 (2) ◽  
pp. 133
Author(s):  
Z. Mansurov ◽  
B. Lesbayev ◽  
G. Smagulova ◽  
Zh. Kulekeev ◽  
G. Nurtaeva
Keyword(s):  
Hydrogen Sulphide ◽  
Caspian Sea ◽  
Combustion Process ◽  
Oil Production ◽  
Combustion Method ◽  
Oil Field ◽  
The Caspian Sea ◽  
Field Development ◽  
Ecological Requirements

Oil production in sea conditions is associated with certain difficulties of the field development process due to technological peculiarities of oil production at sea. The Caspian Sea is an enclosed pond with a very sensitive ecosystem, therefore, maritime operations here meet higher requirements than in open ponds. The uniqueness of the Caspian Sea is in the fact that its biological wealth has no analogues in the world, therefore, mining without complying with strict ecological requirements can cause irreparable harm to the environment. This work deals with the analysis of the possibility to use controlled combustion in situ in case of accidents on the Kashagan oil field which is located in the Caspian Sea. The Kashagan oil field is distinguished by a high content of hydrogen sulphide. In order to study the operational possibilities of oil combustion in situ, the process of evaporation and combustion of desulfurized oil from the Kashagan field depending on salinity of water was studied in this work. The process of evaporation of hydrogen sulphide from hydrogen sulphide-containing oil and the peculiarities of its combustion on water surface were studied in this work. It has been stated that the main difference in oil combustion with a high content of hydrogen sulphide is that the oil combustion process leads to the increase of sulfur concentration in oil residue after combustion.

scholarly journals DYNAMICS OF ZOOBENTHOS DEVELOPMENT WITHIN THE WATER AREA OF THE YURI KORCHAGIN FIELD IN THE NORT PART OF THE CASPIAN SEA

2018 ◽  
pp. 89-97
Author(s):  
Semen Nikolaevich Studnikov ◽  
Lyubov Vasilievna Malinovskaya ◽  
Alexey Vladimirovich Kuzin
Keyword(s):  
Population Density ◽  
Benthic Invertebrates ◽  
Caspian Sea ◽  
Water Area ◽  
The Caspian Sea ◽  
Survey Period ◽  
Gas Field ◽  
Field Development ◽  
The North ◽  
North Part

One of the main purposes of the monitoring studies is a long-term research of benthic communities of the north part of the Caspian Sea. Analysis of quantitative and qualitative characteristics is the only means to formulate main laws of the development of benthic biocenosis in terms of enhanced oil and gas field development, as well as to provide a forecast of the state of the fields and of the human impact on them. In the survey period, from 2014 to 2016, 43 species of benthic invertebrates, namely 2 species of Annelida, 32 species of Crustacea and 9 species of Mollusca, were identified as the result of zoobenthos development study. In that period, total average population density of the benthic fauna within the Yuri Korchagin field water area made 6 716 organisms per square meter, while the general average biomass constituted 77.324 grams per square meter. During the whole period of the research such zoobenthos species as Crustaceans and mainly Gammarids, including Ch. Ischnus and St. similis , dominated in terms of population density. As to biomass, the most abundant zoobenthos species were molluscs - Mediterranean species M. lineatus and A. ovata with D. protracta - a marine species - dominating in different years. Zoobenthos diversity, quantity fluctuations and dominance of given species in biomass and population density at certain stations of the studied water area were linked principally to the water salinity, type of soil and food resources availability. The study of benthic invertebrates showed that Yuri Korchagin field area in the north part of the Caspian Sea is characterized by a high development of euryhaline and marine benthic invertebrates.

scholarly journals ECOLOGICAL ASSESSMENT OF SOIL AT SHIPYARD CONSTRUCTION SITES NEAR KURYK

2019 ◽  
pp. 146-153
Author(s):  
G. Zh. Kenzhetayev ◽  
V. N. Permyakov ◽  
S. E. Koybakova ◽  
Samal Syrlybekkyzy
Keyword(s):  
Heavy Metals ◽  
Caspian Sea ◽  
Soil Condition ◽  
Ecological Assessment ◽  
Well Testing ◽  
Construction Sites ◽  
The Caspian Sea ◽  
Software Products ◽  
The Subject ◽  
The Impact

The aim of the article is to study one of the most unusual coasts of the Caspian Sea in the Kazakhstan area. This coast is not only a place, which was chosen by JSC «KazMunayGas» for construction of a shipyard, but also a territory, on which land is suitable for the development of vegetable and melon crops growing. In the article we consider sites № 1 и № 2 as the alternatives for the shipyard construction. The subject of the research is assessment of the impact of the planned shipyard construction on soil condition of local vegetation. The increased content of some heavy metals (Cu, Cr, and Zn) in the soils of the chosen area is substantiated. Cartographic materials have been completed using well testing software products: Marmfo Professional v.10.2 SAS. Planet 160707.

THE ROLE OF RESERVOIR SIMULATION IN THE DEVELOPMENT OF THE CHALLIS AND CASSINI FIELDS

1990 ◽  
Vol 30 (1) ◽  
pp. 212
Author(s):  
I.G.D. Gorman
Keyword(s):  
Water Injection ◽  
Oil Field ◽  
Production Performance ◽  
Analytical Models ◽  
Production Test ◽  
Well Performance ◽  
Initial Development ◽  
Field Development ◽  
Production Wells ◽  
Interference Test

The Challis oil field development was approved in 1987 with marginal reserves (for an isolated offshore project) of 22 MMbbl. The initial development envisaged three subsea production wells connected via a riser to a floating production facility with one water injector also being required to maximise recovery. However, due to additional potential in the vicinity of the field, the production system was designed to accommodate up to 10 production/injection wells.Further appraisal in 1988/1989 doubled the reserves to 43 MMbbl and increased the number of initial production wells to seven from five reservoirs. The appraisal results also confirmed earlier concerns as to the structural complexity of the field. Analytical interpretations of the production tests performed on the wells could not be fully reconciled with the available well log, core and seismic data. Furthermore, the analytical models developed from these interpretations could not fully match the test results.Reservoir simulation was used to resolve, where possible, the discrepancies. Individual reservoir models were calibrated with the production test results and used to quantify the major uncertainties and their potential impact on production performance. The simulation results indicated that water injection may not be required. However, the degree of internal reservoir communication and the extent of the expected aquifer support were identified as the two principal unknowns.Production policy and monitoring procedures were structured to resolve these uncertainties as quickly as possible during the production start-up phase. Comparative forecasts of expected performance were developed for each reservoir with various levels of aquifer support. A surface controlled interference test was designed to investigate the extent of internal reservoir communication in the main reservoir.The success of the interference test and the results of the early well performance have confirmed the simulation predictions. Simulation modelling was successful in quantifying the range of expected pressure response (to production) for each reservoir and was able to quickly confirm the degree of pressure support present in each reservoir.

THE NUMBER AND QUALITATIVE CHARACTERISTICS OF FRY FISH IN SHALLOW COASTAL WATERS OF THE VOLGA IN THE SUMMER-AUTUMN PERIOD OF 2012

2017 ◽  
pp. 65-73
Author(s):  
Edward Vladimirovich Nikitin
Keyword(s):  
Fish Species ◽  
Coastal Waters ◽  
Caspian Sea ◽  
The Caspian Sea ◽  
Volga River ◽  
Commercial Fish ◽  
Autumn Period ◽  
Fish Juveniles ◽  
Qualitative Characteristics ◽  
Shallow Coastal Waters

Shallow coastal waters of the Volga river is a flooded feeding area for fish juveniles of nonmigratory fish species. There takes place annual downstream migration of fluvial anadromous fish species from spawning grounds of the Volga river to the Northern Caspian Sea. The most important factors determining the number and qualitative characteristics of fry fishes are the level of the Caspian Sea (currently having a tendency to the lowering), hydrological and thermal regimes of the Volga river. Researches were carried out in definite periods of time. In the summer-autumn period of 2012 fry fishes were presented by 19 species (13 of them were commercial species), which belonged to 9 families. The article gives data on all the commercial fish species. In the first decade of July the maximum number of fry fish was registered in the western part of the Volga outfall offshore - in box 247 (19.86 mln specimens/km2), in the eastern part - in box 142 (20.4 mln specimens/km2). The most populous were roach, red-eye, silver bream and bream; size-weight characteristics were better in the areas remoted from the Volga delta. In the third decade of July the quantitative indicators of fry fish on these areas decreased, size-weight characteristics greatly increased. In the second decade of October in the western part of the seaside there were registered increased pre-wintering concentrations of fish juveniles, their qualitative indicators increased, which is evidence to favorable feeding conditions in 2012.

On the type locality of the steppe ribbon racer, Psammophis lineolatus (Brandt, 1838) (Serpentes: Lamprophiidae)

2020 ◽  
Vol 324 (2) ◽  
pp. 262-272
Author(s):  
I.V. Doronin ◽  
T.N. Dujsebayeva ◽  
K.M. Akhmedenov ◽  
A.G. Bakiev ◽  
K.N. Plakhov
Keyword(s):  
Caspian Sea ◽  
Type Specimen ◽  
Type Locality ◽  
Eastern Coast ◽  
Zoological Museum ◽  
Western Coast ◽  
The Caspian Sea ◽  
Original Species ◽  
Academy Of Sciences ◽  
Made In

The article specifies the type locality of the Steppe Ribbon Racer. The holotype Coluber (Taphrometopon) lineolatus Brandt, 1838 is stored in the reptile collection of the Zoological Institute of the Russian Academy of Sciences (ZISP No 2042). Literature sources provide different information about the type locality. A mistake has been made in the title of the work with the original species description: the western coast of the sea was indicated instead of the eastern one. The place of capture was indicated as “M. Caspium” (Caspian Sea) on the label and in the reptile inventory book of the Zoological Museum of the Academy of Sciences. The specimen was sent to the museum by G.S. Karelin. The “1842” indicated on the labels and in the inventory book cannot be the year of capture of the type specimen, just as the “1837” indicated by A.M. Nikolsky. In 1837, Karelin was in Saint Petersburg and in 1842 in Siberia. Most likely, 1837 is the year when the collection arrived at the Museum, and 1842 is the year when the information about the specimen was recorded in the inventory book (catalog) of the Zoological Museum of the Academy of Sciences. In our opinion, the holotype was caught in 1932. From Karelin’s travel notes of the expedition to the Caspian Sea in 1832, follows that the snake was recorded in two regions adjacent to the eastern coast of the Caspian Sea – Ungoza Mountain (“Mangyshlak Mountains”) and site of the Western Chink of Ustyurt between Zhamanairakty and Kyzyltas Mountains (inclusive) on the northeast coast of Kaydak Sor (“Misty Mountains”). In our article, Karelin’s route to the northeastern coast of the Caspian Sea in 1832 and photographs of these localities are given. The type locality of Psammophis lineolatus (Brandt, 1838) should be restricted to the Mangystau Region of the Kazakhstan: Ungoza Mountain south of Sarytash Gulf, Mangystau (Mangyshlak) Penninsula (44°26´ N, 51°12´ E).

ICE CONDITIONS IN THE NORTH-WESTERN PART OF THE CASPIAN SEA IN THE MODERN PERIOD

2020 ◽  
Vol 19 (6) ◽  
pp. 4-17
Author(s):  
Nepomenko Leonid ◽  
◽  
Popova Natalia ◽  
Zubanov Stepan ◽  
Ostrovskaya Elena ◽  
...  
Keyword(s):  
Caspian Sea ◽  
The Caspian Sea ◽  
The North ◽  
Modern Period ◽  
Ice Conditions ◽  
North Western
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