DEVELOPMENT OF OİL PRODUCTİON IMPROVEMENT TECHNOLOGY

It is important to conduct research without storing wells. Prior to this study, the wells will be shut down to explore the wells and additional work will be done for the survey. The research work itself took 15-20 days, using this research to determine the necessary parameters for the joint operation of the reservoir in a short time. In solving engineering problems, the force often applied to the system is to determine its reaction. In such cases, the correct answer to the question can be obtained on the basis of theoretical calculations. However, this is not always possible, and in some cases, instead of a mathematical model of the object under study, research is conducted to find a similar one. An electrical circuit can be thought of as a similar model of the mechanical oscillations of a solid. Therefore, by studying the motion of an electric charge in an electric circuit, it is possible to apply the oscillations of a mechanical system and the distribution of pressure in a porous medium by studying the distribution of heat in an object. If the final results of the two events are similar, then the modeling can be performed. The formation is considered as a working machine to determine the similarity of the drainage zone of the oil and gas well. In this case, the fluid system is lifted by lifting pipes to a certain height with formation pressure and the production of the well is ensured. As a result of the research, it was found that the mode of operation of the drainage zones of the strata in the wells is close to the mode of operation of centrifugal electric pumps. Keywords: debit, formation pressure, gas flow rate, drainage zone of the well, hydraulic characteristics of discharge line, bottomhole pressure, stress on discharge line of the pump.

How to Find the Reservoir Boundaries? Integrated Application of Seismic Attribute Analysis and Welltest on the Miocene Sediments of White Tiger Field, Cuu Long Basin, Vietnam

The development of clastic reservoirs can be complicated by heterogeneity both along the section and along the strike of the formations, therefore, an extended set of studies is especially necessary at such objects, both during drilling and during production. To determine the structure of the void, seismic surveys are usually used, which are limited in scale. An additional tool for defining geological boundaries is well. Well testing carried out in a timely manner, together with the analysis of production data, attribute analysis and geophysical survey data in the open hole, made it possible to identify the heterogeneity of the drainage zone in the early stages of operation and adjust the volume of geological reserves, therefore, to predict production with the highest degree of reliability.

Optimum Layout of Multiple Tree-type Boreholes in Low-Permeability Coal Seams to Improve Methane Drainage Performance

Extracting coal mine methane (CMM) is important for underground mining safety. The tree-type borehole drainage (TTBD) technique can effectively remove methane from coal seams. Determining a suitable drilling pattern for multiple tree-type boreholes will promote the efficient application of this technique in coal mines. Aimed at solving the problem that the optimum methane extraction layout for multiple tree-type boreholes is unclear, this study first constructed a full-coupled thermo-hydro-mechanical model to simulate methane flow in coal. This model and data from a coal mine were used to investigate the effect of multiple tree-type borehole layouts, tree-type borehole spacing, different Langmuir volume and different Langmuir pressure constants, and initial coal permeabilities on CMM drainage. The results show that the different tree-type borehole layouts result in significant differences in drainage and that the use of a rhombic sub-borehole layout can reduce the methane pre-drainage time by up to 44.4%. As the tree-type borehole spacing increases, the total time required for pre-drainage increases as a power function. As the Langmuir pressure constant, the fracture permeability, or the matrix permeability increases, the effective drainage zone expands. The effective drainage zone also expands when the Langmuir volume constant decreases but all these changes are accompanied by a shortening of the drainage completion time. These results can provide a reliable basis for optimizing tree-type borehole drilling layouts.

Evaluation of Mung Bean Germplasm [Vigna radiata (L.) Wilczek] for Yield in Transitional Plain of Inland Drainage Zone of Rajasthan, India

Background: Pulses are leguminous crops which not only increase the soil fertility, its fitness and maintain soil health but also essential to meet the nutritional demand of burgeoning human population particularly in developing countries. Mungbean is a major pulse crop of Zone IIa (Transitional Plain of Inland Drainage Zone) of Rajasthan state. Farm profitability can also be enhanced by augmenting farm productivity. Selection of high yielding genotypes may play a vital role to achieve sustainable high agricultural yield at farmer’s field. Therefore, it is prerequisite to identify the suitable genotypes for this zone since the available varieties were not tested for its adaptability. The current study was aimed to evaluate twelve mung bean genotypes for seed yield with four checks in Zone IIa of Rajasthan.Methods: The mung bean crop was raised during Kharif 2018 and 2019 at Agricultural Research Station, Fatehpur- Shekhawati, Sikar (Rajasthan). Seed yield and its ancillary characters have been observed by following standard protocols. Present experiment was conducted in randomized block design with three replications. The material was sown in a four row plot of 4 m length with a spacing of 30 cm between rows and 10 cm between plants.Result: The performance of genotypes RMG 1098, RMG 1132, RMG 1134, RMG 1139 and RMG 1147 were superior to the zonal, state checks and other tested genotypes. The selected high yielding mung bean genotypes can increase farm output per se and farm profitability by sustaining soil health, fitness and productivity of this region.

Evaluation of hydraulic fracturing results based on the analysis of geological field data

The relevance of the research is specified by the significant contribution of the oil produced as a result of hydraulic fracturing in the wells in its total production. A correct assessment of the results of actually carried out hydraulic fracturing will allow to develop clear recommendations on the further application of this method of oil production enhancement for the geological and physical conditions of specific fields. It was established that hydraulic fracturing in the well 221 of the Shershnevsky field (the Perm Territory, Russia) led to a change in interaction between wells within the entire element of the development system; it began to work as a single coordinated system. As a result of hydraulic fracturing, there was not just a redistribution of fluid drainage volumes. A synergistic effect arose when fracturing in one well led to an increase in fluid flow rates and coordinated operation of the entire element of the development system. It is likely that hydraulic fracturing in the well 221 led to a significant change in the geological and technological characteristics of the Bobrikovskian deposit of the Shershnevsky field to a greater extent than the volume of the drainage zone of this well. A whole system of channels with reduced filtration resistances appeared instead of a single crack, as is common in the classic representation of hydraulic fracturing. It should be noted that the approach presented in the article is the first very important step in a comprehensive analysis of the effective reservoir development based on the results of field monitoring. In the future, it is necessary to attract more detailed information about the interaction of wells. Only such a multilevel analysis will allow to substantiate the general conclusion about the hydraulic fracturing on the development of a reservoir and to confirm conclusively the effect of wells on each other, which can be individual in different parts of the reservoir.

Dynamics of the status of groundwater in the Polish Lowland: the River Gwda catchment example

The aim of the present study is to monitor changes in the location of the groundwater table in the catchment area of the River Gwda within the Quaternary and Neogene water-bearing level over a 35-year period, between 1981 and 2015. In addition, on account of very diverse total annual precipitation levels in particular parts of the catchment, attempts were made to determine the influence of precipitation on the location of the groundwater table. By correlating groundwater level and meteorological parameters (precipitation), it was discovered that precipitation in the previous year made the largest impact on the groundwater table. Moreover, low precipitation totals in the southern part of the catchment are not discernible in groundwater table fluctuations, which is linked to the location of the observation well within the drainage zone as well as to water ascension from deeper aquifers.