Tag Archives: gas
The article reveals the effect of new oil and natural gas classification establishment, which came into force on January 1st, 2016, as well as its positive and negative aspects. The classification is adjusted to the international standards of Society of Petroleum Engineers (SPE) and the USA Security and Exchange Commission (SEC). Its basic feature is the priority of economic efficiency. The practical value lies in the provision of state interests at reserves cost evaluation, which builds the major part of national wealth, as well as in the consideration of tax incentives eligibility. Introduction of such classification should result in the increase of Russian deposits investment potential as well as in the economic efficiency of hydrocarbon reserves production under the conditions of qualitative and quantitative mineral-resource base characteristics deterioration. However, the geological (reservoir type, reserve calculation algorithm, degree of reservoir structure complexity, reserves division), technological (well spacing, oil recovery factor), organizational (computer modeling) and administrative (schedule reduction and special technical and economic features of project approval) aspects could negatively reflect on small subsurface users developing one or several small and middle-sized deposits. Considering the reviewed issues, the author suggests the additional correction of legal and regulatory framework with the aim to eliminate the abovementioned consequences and to support the financial position of small subsurface users.
Currently in the Timan-Pechora oil and gas province (TPОGP) opened about 100 hydrocarbon deposits in the upper Devonian complex. The discovery of large oil deposits in the 80-ies of the 20th century in the upper Devonian complex on Kharyaga and Pisarska fields was the incentive to increase exploration for these deposits. Search works on upper Devonian complex were isolated in a separate direction.
This paper presents a brief description of the characteristic of the deposits in the upper Devonian complex TPОGP.
Oil deposits in this complex dedicated to a wide stratigraphic range (from domanic to numilog horizon). They are associated with the carbonate formations of different nature – reef arrays, “silt” hills, shelf buildings, formation carbonates in “backreef” zone, depression Dominicaine sediments at the foot of the reef massifs, with paleomagnetism in the area of uncompensated depression.
Petroleum potential of the considered complex is provided by a combination of reservoir rocks, local and zonal tires, traps, as well as the presence in the complex, and the underlying Paleozoic sediments of petroleum generating ones strata.
Zone reefs are complex areas of oil and gas accumulation. These long linear areas favorable for the accumulation of hydrocarbons in the process of lateral and vertical migration. Source lateral migration are domanic and Dominicaine deposits, vertical – underlying sediments of the Paleozoic.
The outer contour of the distribution of hydrocarbon deposits in the study area coincides with the reef area domanic age. This reef area of the upper Devonian middle and low-capacious carbonate reservoirs in “backreef” zone during testing were obtained only tributaries water. This is probably due to several causes: 1) the relative remoteness of the petroleum generating ones (domanic and domeniconi) strata in the upper Devonian complex; 2) the presence of barriers to lateral migration of hydrocarbons in the form of reef areas, which are already in sedimentary basins represented a tectonic-sedimentary traps and could catch hydrocarbons; 3) lack of generating hydrocarbons clay-sand-silt-middle Devonian sediments and distribution of red-colored facies in the sections of the Silurian and lower Devonian.
Major deposits of oil in the upper Devonian complex TPОGP concentrated under local and zonal tires, which rarely overlap reef strata, and they are most often located above overreef sediments.
Protection of pipelines from internal and external corrosion – one of the biggest challenges pursued by the organizations operating these networks. With proper and reliable protection against corrosion of underground and aboveground piping reduced the cost of their repair or complete replacement, which gives a huge economic impact. Existing methods for condition monitoring of corrosion protection have serious drawbacks, chief of which is that due to the large time interval between visits protection stations staff holds the delay in the detection of irregularities in their work, which contributes to the danger of failures and accidents. The article provides a solution to this problem, namely, we present a method of automated control state gas pipeline corrosion protection. For this purpose, a local subsystem multifunctional information-measuring system (IMS) gas transportation enterprises (GTE), which consists of three parts, exchanging information with each other and allows for Drugs radio control operation of the system directly from the control center. For reliable and trouble-free operation, information-measuring system must perform a sequence of specific actions. It is for this algorithm is developed automated condition monitoring of corrosion protection gas pipeline, through which we can interrogate items controlled cathodic protection station, manage, to determine their performance. The block diagram and description of the algorithm presented in the paper.
The fire heating process control in terms of quality, technical and economic efficiency (by the example of hydrothermal treatment of concrete products)
The problems of optimization of the thermal treatment of concrete products based on the use of self-contained heating devices that run on natural gas. Refer the problem and proposed hardware implementation of solutions to the optimization problem of the heat treatment of gas flow when the constraints on the strength of concrete products. We propose an automated process control system and reviewed the results of its use in industrial applications. Described the construction of a gas stove (air heater), which has a low metal content, with a system of discrete switching burners. The control device is finite-state regulator. It is shown that the complex “heater – automatic control system” provides a rate increase quality concrete products (strength) and low specific energy consumption per unit of production.
Complex geological-geophysical researches of Patrakovskaya area (north of the Perm region) at the stage of zonal-regional works on oil and gas
In Perm Krai regional geologic-geophysical works for the purpose of studying of a geological structure of the territory, localization of oil and gas potential objects, allocations of areas for licensing are in the last decade carried out. The complex of methods used during the regional works, includes seismic exploration and a gravimetric, aerospace geological researches and gas-geochemical researches in addition can be applied. During researches of Patrakovskaya area located in the northeast of Perm Krai, the technique of interpretation of a complex of gravimetric, magnetometric, aerospace geological and geochemical researches at a stage of regional works on oil and gas is created and fulfilled; possibilities of separate methods and all complex as a whole are shown; it is received new information on a geological structure of the territory. As a result of gravimetric researches localization overthrusts in a sedimentary cover is specified, target intervals of depths are characterized by transformants of a field, the positive gravitational anomalies displaying anticlinal objects, imaging as to structures and the elevated plots established by seismic exploration, and new probable anticlinal objects are marked out. On magnetometric materials the abnormal zone in the basement, connected with breaks is allocated; influence of features of a deep structure on a sedimentary cover is revealed. It is shown by results of aerospace geological researches that the most reliable landscape anomalies displaying anticlinal structures, are in zones of overthrust fronts. As a result of interpretation of gas-geochemical data it is established that the studied territory is divided into two parts on prospects for oil and gas exploration, the northeast part of the area adjoining a gas field, located to the north of the area of works is most perspective.