scholarly journals Modeling the production of hard-to-recover oil reserves using thermal methods

2021 ◽  
Vol 1064 (1) ◽  
pp. 012062
Author(s):  
A A Gizzatullina ◽  
T N Minnivaleev ◽  
I Sh Mingulov
Keyword(s):  
Geosciences ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 98
Author(s):  
Banabas Dogah ◽  
Vahid Atashbari ◽  
Mohabbat Ahmadi ◽  
Brent Sheets

Alaska holds more than 68 billion barrels of proved oil reserves and more than 36.7 trillion cubic feet of proved natural gas reserves with some special conditions such as proximity to permafrost, making Alaskan petroleum reserves unique. The low temperature in shallow reservoirs prohibited hydrocarbons’ ideal maturation, thereby generating several heavy and viscous oil accumulations in this state. This also limits the enhanced oil recovery (EOR) options, leaving the thermal methods off the table to avoid permafrost thawing, which can cause wellbore collapse. Several solutions have been attempted for improving oil production from heavy and viscous oil in Alaska; however, they have not yielded the desired recovery, and ultimate recovery factors are still less than the global average. One solution identified as a better alternative is using CO2 as an injecting fluid, alternated by water or mixed with other injectants. This paper provides a comprehensive overview of all studies on using CO2 for enhanced oil recovery purposes in Alaska and highlights common and unique challenges this approach may face. The suitability of CO2-EOR methods in the Alaskan oil pools is examined, and a ranking of the oil pools with publicly available data is provided.


Author(s):  
P.A. Khlyupin ◽  
◽  
R.T. Khazieva ◽  
A. Vahedi ◽  
◽  
...  

When developing hard-to-recover hydrocarbon reserves, enterprises use various complexes and systems to facilitate technological processes that contribute to the lifting of heavy and viscous oils to the surface, as well as the extraction of light oils from lowpermeability reservoirs. During the operation of fields, abnormal situations also arise, caused by the appearance of asphalt-resin-paraffin deposits (ARPD) and salt deposits on the walls of tubing pipes, Christmas trees, process pipelines and equipment at the bottom. The existing methods of combating and preventing the manifestations of ARPD and salt precipitation can be conditionally divided into mechanical, chemical, thermal. To prevent and combat ARPD, as well as to reduce the viscosity of produced oils, thermal methods are most preferred, among which electrothermal methods are considered effective. In the case of salt sediments, technologies based on electrical energy are also an effective means of prevention, in particular, exposure of the well emulsion to a magnetic field. Keywords: electrical technological systems and complexes; hard-to-remove oil reserves; asphalt-resin-paraffin deposits; induction heating systems.


Author(s):  
B.M. Mukhtanov ◽  

This article presents the results of assessment and prospectivity of high-viscosity oil reserves difficult to recover development technology application by means of thermal formation treatment based on analysis of Kenkiyak, Kumsai and Mortuk fields development.


Author(s):  
Miguel Frasquet ◽  
Manuel Silva

Solar steam generation for enhanced oil recovery has a significant potential at regions where, in addition to heavy oil reservoirs, solar resource is abundant. China ranks amongst the countries with greater heavy oil reserves. In addition, Western regions of China have a solar resource equivalent to that of places in which solar energy is being developed in a commercial scale. This paper addresses the technical feasibility of using concentrating solar collectors to produce the steam required in the recovery of heavy oil through thermal methods. Three locations have been selected for this study. In each location, three different reservoir injectivity scenarios have been taken into account: No injectivity limitation (as upper bound), partial limitation and full limitation (meaning that the injection rate cannot be greater than the design value for constant rate). In the first scenario, the surface model uses parabolic through collectors and direct steam generation. When injectivity is restricted, thermal storage becomes necessary in order to be able to inject the same amount of heat into the reservoir within the limits of the reservoir’s injectivity. Therefore, molten salts tower system with sensible storage is proposed as technology for the second scenario. In the third scenario, also parabolic through collectors are used but in this case, the solar system is coupled with conventional Once-Through Steam Generators (OTSGs) in a hybrid scheme (this approach represents the current state of the art).


1986 ◽  
Vol 4 (5) ◽  
pp. 321-348
Author(s):  
Rawya Selby ◽  
S. M. Farouq Ali

Heavy oil and oil sands deposits constitute an important resource, with in-place estimates varying between 600 × 109 and 980 × 109 m3. These deposits are mostly concentrated in Canada, the US and Venezuela. The gradual depletion of conventional oil reserves is leading to a greater interest in heavy oil recovery. This paper presents on overview of heavy oil characteristics, worldwide deposits and recovery methods, with special emphasis on the heavy oils and oil sands of Canada. Thermal recovery techniques such as cyclic steam stimulation, steamflooding and in-situ combustion have been generally more successful than non-thermal methods. The principal thermal recovery processes are discussed in detail. Reservoir characteristics influencing the applicability of these processes are mentioned, and possible operational problems are outlined. Most of the Canadian heavy oils and oil sands deposits occur in the provinces of Alberta and Saskatchewan. Selected recovery projects currently in operation are described, outlining modifications to the basic process, problems encountered and range of success.


1958 ◽  
Vol 14 (3) ◽  
pp. 100-102
Author(s):  
Everett G. Trostel
Keyword(s):  

Author(s):  
A.T. Zaripov ◽  
◽  
D.K. Shaikhutdinov ◽  
A.A. Bisenova ◽  
◽  
...  

2019 ◽  
Vol 12 (3) ◽  
pp. 77-85
Author(s):  
L. D. Kapranova ◽  
T. V. Pogodina

The subject of the research is the current state of the fuel and energy complex (FEC) that ensures generation of a significant part of the budget and the innovative development of the economy.The purpose of the research was to establish priority directions for the development of the FEC sectors based on a comprehensive analysis of their innovative and investment activities. The dynamics of investment in the fuel and energy sector are considered. It is noted that large-scale modernization of the fuel and energy complex requires substantial investment and support from the government. The results of the government programs of corporate innovative development are analyzed. The results of the research identified innovative development priorities in the power, oil, gas and coal sectors of the fuel and energy complex. The most promising areas of innovative development in the oil and gas sector are the technologies of enhanced oil recovery; the development of hard-to-recover oil reserves; the production of liquefied natural gas and its transportation. In the power sector, the prospective areas are activities aimed at improving the performance reliability of the national energy systems and the introduction of digital technologies. Based on the research findings, it is concluded that the innovation activities in the fuel and energy complex primarily include the development of new technologies, modernization of the FEC technical base; adoption of state-of-the-art methods of coal mining and oil recovery; creating favorable economic conditions for industrial extraction of hard-to-recover reserves; transition to carbon-free fuel sources and energy carriers that can reduce energy consumption and cost as well as reducing the negative FEC impact on the environment.


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