scholarly journals The Architectural Surfaces Characteristics of Sandy Braided River Reservoirs, Case Study in Gudong Oil Field, China

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Xixin Wang ◽  
Fan Zhang ◽  
Shaohua Li ◽  
Luxing Dou ◽  
Yuming Liu ◽  
...  
Keyword(s):  
Physical Properties ◽  
Oil And Gas ◽  
Oil Field ◽  
Production Performance ◽  
Braided River ◽  
Fine Grained ◽  
Braided Rivers ◽  
Oil And Gas Fields ◽  
Developmental Characteristics ◽  
Bounding Surfaces

The architecture analysis of the different orders sedimentary bodies is of great significance to the efficient development of oil and gas fields. In order to investigate the effects of the architectural interfaces on reservoir quality and heterogeneity, this study takes the Gudong oil field as a case to investigate the architectural characteristics of hierarchical bounding surfaces using detailed descriptions of core and wireline logs. Architectural models from the 7th-order to the 3rd-order are analyzed, and the developmental characteristics of the 5th-order braided river, 4th-order single sandstone, and 3rd-order accretion are summarized. The interlayer between two braided rivers is floodplain mud deposition, with poor physical properties, stable thickness, and strong blocking capacity. Two models of interlayers are found in the 4th-order deposition. The first interlayer is between the braided filling channel and midchannel bar, which is composed of generally fine-grained sediments with calcium cementation and poor physical properties. The second interlayer is a transformation belt between two midchannel bars and is generally composed of gravel-scoured deposition with penetration capability. The 3rd-order surfaces are defined as the surfaces of accretions within midchannel bars. Two models of interlayers are also found in the 3rd-order surfaces of accretions. The paleocurrent of the sandy braided river is reconstructed by synthesizing the core data, well logging data, and production performance data. A total of 1 fluvial system (7th-order), 2 compound braided rivers (6th-order), 11 braided rivers (5th-order), 41 midchannel bars (4th-order), and 96 accretions (3rd-order) are developed in the study area.

Diagnostic Results of Current Distribution Injected Water Flow in the Productive Formation for Neft Dashlary Oilfield

2021 ◽  
Author(s):  
Khidir Mansum Ibragimov ◽  
Nahide Ismat Huseinova ◽  
Aliabas Alipasha Gadzhiev
Keyword(s):  
Current Distribution ◽  
Oil And Gas ◽  
Experimental Studies ◽  
Oil Field ◽  
Fluid Distribution ◽  
Field Development ◽  
Hydrodynamic Parameters ◽  
Oil And Gas Fields ◽  
Oil Field Development ◽  
Gas Fields

Abstract For controlling the oil field development proposed an economically efficient express calculation and visualization method of the hydrodynamic parameters current values distribution in the productive formation. The presented report shows the results of applying this technique for determining the injected water propagation direction into the productive formation (X horizon) at the «Neft Dashlary» field. Based on the calculated results, the current distribution of the injected water was visualized in the selected section of the formation. High accuracy of the calculation was confirmed by comparing obtained results with the results of a simultaneous tracer study conducted in the field conditions. During tracer studies it was tested a new tracer material, more effective than its analogs. According to laboratory and experimental studies, the addition of 0.003% of this indicator substance to the volume of injected water is the optimal amount for its recognition in the well's product. At the allocated area of the "Neft Dashlari" field, the benefits from the use of the calculation method amounted to 62.9 thousand manats. Based on the obtained satisfying results of the new method for calculating hydrodynamic parameters and the use of a tracer indicator application at the «Neft Dashlary» oilfield, it is recommended to apply these developments in other oil and gas fields for mass diagnostic of the reservoir fluid distribution in a selected area of productive formations.

scholarly journals Braided-river and hyperconcentrated-flow deposits from the Carboniferous of the Lublin Basin (SE Poland) – a sedimentological study of core data

Geologos ◽  
2012 ◽  
Vol 18 (3) ◽  
pp. 135-161 ◽  
Author(s):  
Maria I. Waksmundzka
Keyword(s):  
Source Area ◽  
High Energy ◽  
Coarse Grained ◽  
Type I ◽  
Braided River ◽  
River Channels ◽  
Fine Grained ◽  
Braided Rivers ◽  
Base Level ◽  
Se Poland

Abstract Fining-upwards cyclothems found in five boreholes in the Carboniferous (Lower Bashkirian) of the Lublin Basin were analysed sedimentologically. It was established that the cyclothems represent fluvial deposits, and the lithofacies were grouped into lithofacies associations. Most lithofacies associations represent three types of sand-bed braided rivers: (1) high-energy, (2) deep and (3) distal sheetflood-affected. Other associations represent hyperconcentrated flows. Both coarse-grained (type I) and fine-grained (types IIa and IIb) occur among the fining-upward cyclothems. The formation of most thick cyclothems was related mainly to allocyclic factors, i.e. a decrease in the river’s gradient. The thickest fining-upward cyclothems are characteristic of hyperconcentrated flows and braided-river channels. The aggradation ratios were commonly high. During the early Namurian C and early Westphalian A (Early Bashkirian), the eastern part of the Lublin Basin was located close to the source area. The sedimentary succession developed due to a transition from high-energy braidedrivers and hyperconcentrated flows to lower-energy braided rivers, controlled by a rise of the regional base level.

Improves Sucker Rod and Tubing Lifetime Applying the Wear Predict 99 Equation

2021 ◽  
Author(s):  
Teguh Rachman Hidayat ◽  
Fajar Kurniawan ◽  
Jalu Waskito Aji Nugroho ◽  
Aris Tristianto Wibowo ◽  
Panji Ikhlasul Amal ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Preventive Measures ◽  
Oil Field ◽  
Production Performance ◽  
Service Work ◽  
Efficient Technology ◽  
Work History ◽  
Artificial Lift ◽  
Sucker Rod ◽  
Electrical Submersible Pump

Abstract Finding new oil and gas that can be developed economically is getting more difficult and challenging today. To meet the oil and gas demand, it is therefore important to focus on the existing and already developed assets by applying new and more efficient technology and optimizing the use of existing equipment to increase production performance of the asset thus better recovery. Sangasanga Field as mature oil field of Pertamina EP is producing its oil by the assistance of artificial lift. The artificial lifts applied in Sangasanga field are Sucker Rod Pump (SRP), Electrical Submersible Pump (ESP) and Hydraulic Pumping Unit (HPU) where SRP dominates with 84 units installed while ESP and HPU are 25 units and 15 units respectively. According to the data of well service work history from 2018 to 2020, the failure of SRP and HPU was quite high. The main problem observed were the occurrence of leaking tubing and broken sucker rods. The study gathered the occurrence of failure and a method so called "WEAR PREDICT 99" was created to estimate SRP's buckling point and lifetime. WEAR PREDICT 99 is a correlation derived from comparing neutral point calculated from formula with actual leak data of broken pipe or suction rod. The correlation then used for predicting the buckling point that represents the probable location of the leaking pipe or damaged suction rod. This correlation allows to predict when and where the sucker rod will leak or break, therefore preventive measures to increase the lifetime of the SRP and HPU wells can be taken.

scholarly journals PRESERVATION OF THE OLD‐GROWTH RELIC BUSULUK PINE FOREST UNDER THE CONDITIONS OF OIL FIELD DEVELOPMENT

2019 ◽  
Vol 14 (2) ◽  
pp. 59-69
Author(s):  
P. V. Velmovsky ◽  
A. A. Chibilyov
Keyword(s):  
Oil And Gas ◽  
Pine Forest ◽  
Oil Field ◽  
Pine Forests ◽  
Old Growth ◽  
Field Development ◽  
Oil And Gas Fields ◽  
Oil Field Development ◽  
Pine Trees ◽  
Gas Fields

Aim. In this paper, we set out to analyse the problem of preservation of old‐growth relic pine forests under in the context of oil field development.Discussion. The Buzuluk pine forest is the largest natural island forest in the steppe zone of European Russia. Presenting a landscape isolate of old‐growth natural pine and pine‐broadleaved forests, this unique natural object received the status of a national natural park in 2007. In this territory, former oil and gas fields are currently being prepared for operation and maintenance. The Buzuluk pine forest has been a subject of intense scientific interest due to a number of preserved standards of old‐ growth pine forests. These standards were originally identified and described by G.V. Morozov and V.N. Sukachev, thus forming a basis for modern forest biogeocenosis classifications. The paper discusses the current problems of the Buzuluk pine forest associated with the need to preserve old‐growth pine trees serving as standards. The consequences of oil production are assessed, with environmental restrictions in the zones of oil field exploitation being formulated. Industrial development of oil and gas fields inevitably leads to negative consequences, includ‐ ing the loss of ecosystem stability, a decrease in biological diversity and landscape degradation.Conclusion. The preservation of old‐growth pine trees is a necessary condition for the existence, restoration and sustainable development of the Buzuluk pine forest as a single ecosystem. 

DEPOSITIONAL HISTORY OF THE SOUTHERN TAROOM TROUGH, QUEENSLAND

1995 ◽  
Vol 35 (1) ◽  
pp. 344
Author(s):  
J.W. Beeston ◽  
O. Dixon ◽  
P.M. Green
Keyword(s):  
Oil And Gas ◽  
Oil Field ◽  
Depositional History ◽  
Oil And Gas Fields ◽  
Depositional Settings ◽  
Sediment Input ◽  
History Of ◽  
Complex Relationships ◽  
Gas Fields ◽  
Seismic Reflector

The Permian succession in the southern Taroom Trough is generally believed to be the source of hydrocarbons in the Roma Shelf oil and gas fields and the Moonie oil field. The succession is characterised by complex relationships between marine and fluvio-deltaic facies which reflect marked differences in the depositional history of the Trough.On the basis of transgressive events, the succession has been subdivided into four sedimentary cycles, the boundaries of which do not always correspond to formation boundaries or seismic horizons. Notably, the top coal in any area forms a prominent seismic reflector, but coals in individual areas can be demonstrated to occur at different stratigraphic positions relative to the major interval of coal development. These higher coals reflect changing depositional settings with time.Palaeogeographic reconstructions demonstrate a complex depositional history of sediment input onto a shallow shelf from differing directions and with different rates of input.

scholarly journals Features of reclamation of oil-contaminated lands in the conditions of the Middle Ob

2020 ◽  
Vol 217 ◽  
pp. 04004
Author(s):  
Nina Rogova
Keyword(s):  
Natural Environment ◽  
Western Siberia ◽  
Oil And Gas ◽  
Oil Field ◽  
Oil Products ◽  
Negative Consequences ◽  
Oil And Gas Fields ◽  
Fragile Environment ◽  
Gas Fields ◽  
The Impact

In the process of extraction, collection, transportation and primary processing of hydrocarbons, the lands of the fields are often damaged. For the further operation of the oil field, it is necessary to carry out not only reclamation of disturbed lands, but also oil-contaminated lands formed as a result of accidental spills. The natural environment of Western Siberia is a fragile environment and interference in its existing balance as a result of accidental spills of oil products and pollution of land and water bodies leads to negative consequences for the flora and fauna. If the impact on the natural environment during the development of oil and gas fields during the placement of oil field facilities can still be considered as permissible, then the ingress of oil products into the environment should be considered as negative with far-reaching consequences.

scholarly journals Overview of Lower Cretaceous Achimov Formation: Physical Properties and Their Distribution Pattern in West Siberian Basin, Russia

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Mingyu He ◽  
Qingbin Xie ◽  
A. V. Lobusev ◽  
M. A. Lobusev ◽  
Xinping Liang
Keyword(s):  
Physical Properties ◽  
Oil And Gas ◽  
Distribution Patterns ◽  
Burial Depth ◽  
Reservoir Properties ◽  
Reservoir Rocks ◽  
Oil And Gas Fields ◽  
Genetic Mechanisms ◽  
Gas Fields ◽  
West Siberian Basin

The Achimov Formation is one of the most important oil- and gas-bearing strata in the West Siberian basin in Russia. The total estimated reserves of this stratum exceed one billion tons. The formation was first explored in 1981, but it remains largely underdeveloped due to its deep burial depth and poor physical properties. Therefore, further research on the genetic mechanisms and distribution characteristics of the reservoirs in the formation can contribute to its further exploitation. The Achimov Formation is dominated by of fine- to medium-grained sandstones interbedded with shale. Based on analysis of well logging data, hand specimens, and previous research, this study analyzed the properties of three members (Ach1, Ach2, and Ach3) of the Achimov Formation and summarized their distribution patterns. Research on reservoir rocks from different oil and gas fields reveals varying physical properties across the formation with permeability and porosity increasing from the northern to central areas and decreasing from the central to the southern areas. Burial depth is one of the major controlling factors for reservoir properties in the formation. Reservoirs in both the northern and southern parts of the formation are buried deeper than those in the central areas, resulting in a disparity in reservoir quality.

Integrated substantiation of the Erema–Chona giant gas–condensate–oil field (Lena–Tunguska petroleum province)

2020 ◽  
Author(s):  
Georgy G. Shemin ◽  
Keyword(s):  
Oil And Gas ◽  
Oil Field ◽  
Gas Condensate ◽  
Structural Elements ◽  
Compelling Evidence ◽  
Oil And Gas Fields ◽  
Gas Fields ◽  
Favorable Conditions

This paper provides compelling evidence for the previously discovered oil and gas fields in the central, most uplifted part of the Nepa–Botuoba anteclise, to be the constituent structural elements of the Erema–Chona giant gas–condensate–oil field. The revealed tectonic, lithological–facies, and geochemical affinities within its limits attest to equally favorable conditions for the formation of oil and gas accumulations.

Roads, Pads, and Access Along Gravel Free Pipeline Routes

2008 ◽  
Author(s):  
Rupert G. Tart
Keyword(s):  
Oil And Gas ◽  
Thermal State ◽  
Oil Fields ◽  
Yamal Peninsula ◽  
Ural Mountains ◽  
Fine Grained ◽  
The North ◽  
Oil And Gas Fields ◽  
North American Arctic ◽  
Gas Fields

In many of the major oil and gas fields in the North American Arctic, gravel is abundant and close to the production fields and the pipeline routes. In many other Arctic areas in Europe and Asia, gravel is almost non-existent. As new fields are being developed, gravel free areas are being encountered in more areas such as the National Petroleum Reserve Alaska (NPRA) and many of the Russian oil fields west and east of the Ural Mountains and into the Yamal Peninsula. Without free draining gravel, access and development of these new fields becomes more costly, more schedule sensitive, and more complicated. This paper looks at options for roads, pads, and access for developing the oil fields and building and operating the pipelines in areas where gravel deposits are sparse. Some of the options that are discussed and evaluated are using: 1. Additives to increase the strength of available fine-grained materials. 2. Ice and snow pads and roads. 3. Seasonal scheduling of construction. 4. Various road and pad surfacing options including: a) Year-around ice pads, b) Concrete pads and pavements, and c) Mats constructed of various materials. 5. Dredging and draining to obtain available sandy materials from waterways. 6. Geofabrics to contain ice rich materials placed in winter. 7. Methods for maintaining the thermal state of winter placed embankment.

Research on Corrosion Rate of Sucker Rod Steel 20Ni2Mo in Wet H2S Environment

2015 ◽  
Vol 814 ◽  
pp. 319-324 ◽  
Author(s):  
Wen Tao Qu ◽  
Si Ying Liu ◽  
Zhang Shi Xu
Keyword(s):  
Corrosion Rate ◽  
Oil And Gas ◽  
Oil Field ◽  
Oil Fields ◽  
Safe Operation ◽  
Oil And Gas Fields ◽  
Petroleum Equipment ◽  
Sucker Rod ◽  
Gas Fields ◽  
Oil Field Exploitation

Among the factors to cause the corrosion in oil and gas fields, H2S is the most common and harmful corrosive medium. During oil field exploitation, enhancing the ability of the sucker rods to resist corrosion is the key measure of prolonging the service life of sucker rods and guarantee of safe operation of petroleum equipment. This paper focuses on the corrosion of sucker rod steel 20Ni2Mo in different concentrations or temperatures of H2S. The appearance of corrosive surface scanned by scanning electron microscope was analyzed and theoretic basis for anti-corrosion and material-selecting of sucker rods used in the oil fields was provided. The result shows that the concentration and temperature of H2S have interaction on the corrosion of 20Ni2Mo, i.e., with the increase of concentration under same temperature or with the rise of temperature under same concentration, the corrosion rate of 20Ni2Mo accelerates.

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