Drill stem and Deliverability test analysis: Case study of a gas field well test analysis in Myanmar

Drill-stem tests are performed to confirm or prove the presence and the producibility of oil and gas that is detected by the other services. It is usually performed on exploration wells are often the key to determining whether a well has found a commercial hydrocarbon reservoir. Reservoir parameters specifically related to productive capacity such as pressure, permeability can be determined through drill stem test. Common sequence of a drill stem test includes of a short flow period mostly five or ten minutes, which is followed by a buildup period of about an hour that is used to determine initial reservoir pressure. Afterwards, the well is allowed to flow for next four to twenty four hours to establish stable flow to the surface then the well is shut in again for final shut in or build up test which is used to determine permeability thickness and flow potential. Drill stem tests are usually combined with deliverability tests which is referred to the testing of a well to measure its production capabilities and flow performance relationships. Most common deliverability tests are flow after flow, single-point, isochronal and modified isochronal tests. Two main applications of deliverability tests are obtaining the absolute open flow (AOF) potential and generating reservoir inflow performance relationship (IPR) or gas backpressure curve. This paper discusses the case study of drill stem test and deliverability test done on a well in one of the gas fields located in Myanmar. Topics will cover the analyses of reservoir parameters through initial build up test, final build up test during the drill stem test and analysis of flow after flow test for Darcy and Non Darcy skin factors. In addition, it will further discusses the comparison of deliverability tests (empirical and analytical) and lastly perform production forecasting. The analyses are performed through Pansystem which is the well test analysis software developed by Weatherford Inc

Therapeutic potential of anti-VEGF receptor 2 therapy targeting for M2-tumor-associated macrophages in colorectal cancer

博士（医学）福島県立医科大

Feeding values of conventional diets and their effects on the performances of dairy cows in Central Myanmar

The conventional diets have been fed to dairy cows since many years ago in Myanmar, however there is a little scientific information regarding the use of those diets as feed. Therefore, this study was conducted to evaluate the feeding values of conventional diets and their effects on the performances of dairy cows in Central Myanmar. Nine cross-bred Holstein Friesian cows (460±22kg) with the 12th week of lactation were randomly allocated to one of three treatment groups with three replicates in a completely randomized design. The three treatments were Diet-ST (common diet from Sin Tel, Tatar U Township), Diet-MN (common diet from Myay Ngu, Tatar U Township) and Diet-AM (common diet from Amarapura Township). Cows were fed treatments for 60 days. The roughage to concentrate ratios ranged from 53:47 to 72:28 and the nutritive values were significantly different (p<0.05) each other. The highest nutrient intakes were observed in dairy cows fed on Diet-MN, however the nutrient digestibility were not different (p>0.05) except the CP and ether extract digestibility (CPD and EED). The nitrogen utilization was highest in dairy cows fed on Diet-ST and the lowest value was observed in the dairy cows fed on Diet-AM. Although the milk compositions were not different (p>0.05), the average milk yield of dairy cows offered the Diet-MN was significantly higher (p<0.05) than those of dairy cows fed on other diets. The highest total feed cost (p<0.05) was found in Diet-AM and the lowest value (p<0.05) was in Diet-MN. According to these findings, it was concluded that the highest feeding value was observed in Diet-MN and its effect on the performances of dairy cows was also greater than others. Moreover, it would be suggested that better bean residues and sesame residues could be used as fibre sources in the diets of dairy cows

In vitro fermentation of conventional diets commonly fed to dairy cows in Central Myanmar

This study consisted of two experiments conducted to evaluate the effective net gas, fermentation kinetics (experiment 1), methane gas concentration, partitioning factor (PF) for microbial protein synthesis and in vitro dry matter digestibility (IVDMD) (experiment 2) of conventional diets commonly fed to dairy cows in Central Myanmar. The conventional diets from four areas [diet from Sin Tel area (Diet-ST), diet from Myay Ngu area (Diet-MN), diet from Ta Pel area (Diet-TP) and diet from Amarapura area (Diet-AM)] were used as experimental diets in this study. In most of conventional diets, rice straw, sorghum stover and natural grass were used as roughage source and cotton seed cake and broken rice were used as concentrate. However in some diets, sesame residue and butter bean residue were used as roughage source instead of sorghum stover and natural grass. The roughage to concentrate ratio and crude protein (CP) content of conventional diets ranged from 53:47 to 72:28 and 11.46 to 17.96%, respectively. In experiment 1, the effective net gas volume of Diet-TP was lower (p<0.05) than Diet-ST and Diet-AM and generally, the fermentation kinetics (a, b, c and a+b) of Diet-TP were also lower than those of other diets. In the experiment 2, the lower value (p<0.05) of short chain fatty acid (SCFA) was found in Diet-MN and Diet-TP while the higher values (p<0.05) of metabolizable energy (ME) and organic matter digestibility (OMD) were observed Diet-AM and Diet-TP. Although methane gas concentration of Diet-TP was higher (p<0.05) than those of other diets, the greater values of IVDMD and PF were observed in Diet-TP. According to these findings, it was perceived that all conventional diets have different nutritional qualities which are useful for production and health of dairy cows; however the Diet-TP possessed the highest nutritional qualities among the conventional diets

Effect of leucaena forage and silage substitution in concentrates on digestibility, nitrogen utilization and milk yield in dairy cows

This experiment was conducted to determine the effect of feeding leucaena forage and silage substitution in concentrate on the performances of dairy cows. Nine cross-bred Holstein Friesian cows (410±12kg) in the 12th week of lactation were randomly allocated to one of three treatment groups with three replicates/treatments in a completely randomized design. The three treatments were control diet without substitution of leucaena forage and silage (DLFS0), diet with substitution of leucaena forage 10% (DLF10) and diet with substitution of leucaena silage 10% (DLS10). Cows were fed treatments for 60 days. Although nutrient intakes were not significantly different (p>0.05) each other, digestibility of DLFS0 was significantly higher (p<0.05) than others. Conversely, nitrogen utilization and average milk yield of cows offered DLFS0 were significantly lower (p<0.05) than those of cows fed on DLF10 and DLS10. The highest feed cost (p<0.05) per kg of milk was found in DLFS0 and the lowest cost was observed in DLF10. Therefore, although the leucana forage and silage could be substitute up to 10% of concentrates without adverse effects on the performances of dairy cows, the substitution of leucaena forage gave the better performances than that of leucaena silage

Interference Analysis of Medium Voltage Air Line 20 KV Feeder Using Failure Mode and Effects Analysis Method

This article discusses the interference analysis of medium voltage air line 20 kv feeder using failure mode and effects analysis method. The distribution network consists of two parts, the first the distribution network consists of two parts, the first is the medium / primary voltage (JTM) network, which supplies electrical power from the sub-transmission substation to the distribution substation, the primary distribution network uses three wires or four wires for three phases. the impact of the reliability index from the calculation of the impact of the reliability index based on the number of disturbances (SAIFI), it shows that in January 2019 it has the highest index value, namely SAIFI, 1,695 disturbances/ subscribers. From the results of the calculation of the impact of the reliability index based on the number of blackouts (SAIDI), it shows that in January 2019 the SAIDI index value was 3,883 hours/customer

Voltage Stability Assessment of Power System with Distributed Generation in Free and Open Source Software

This paper presents voltage stability analysis of distributed generation (DG) in mesh distribution network in Power System Analysis Toolbox (PSAT) — free and open source software. Voltage stability analysis of a power system is a necessity, particularly in the planning period of the development or expansion of a power network. The ultimate goal of this paper is to investigate the voltage stability of the 52 buses power system network (Mandalay City) during the expansion of the network. In this paper, a study is being done to expand the power network of the area of Mandalay City. In order to perform the voltage stability analysis, modal analysis as well as PV curves was evaluated based on load flow for selected scenarios. PSAT has been developed to carry out the static voltage stability analysis. And also the dynamic voltage stability analysis has been performed by using time domain simulation with PSAT software

Sport as a tool of politics: A study on Myanmar's Southeast Asian Games 2013

Since a new semi-civilian government came to power in March 2011, Myanmar has embarked on sweeping reforms to end its isolation and integrate its economy with the international economy. As a signal of stimulating the economic stagnation, President Thein Sein's government revamped finance and investment laws to draw more foreign investment into the country and asked for financial and technical assistance from the international community at the same time. However, the image of a military-influenced civilian government has created administrative problems for Myanmar's policy of national re-unification and economic development. So Myanmar badly needed to improve its national image and legitimacy in order to reduce the obstacles to its regional and international political and economic objectives. As a diversely populated country, Myanmar leaders thought that projecting a positive national image will contribute to a higher level of national brand and uplift their political legitimacy. Therefore the government decided to host the 27th SEA Games which may be vital for re-branding of Myanmar and so they prepared to formulate this idea since before the transfer of power from military government to a new semi-civilian government in 2011. The Games was a good opportunity for the former Myanmar military leaders to showcase their top-down democratization model. Eventually, with the honour of hosting the Games in December 2013 that returned to the country after 44 years, Myanmar successfully hosted the biggest regional sporting event as a promotion for the new Myanmar. Especially, Myanmar showed its kind hospitability throughout the Games while sport athletes uplifted the nation’s image by earning the most medals for the first time since the competition began in 1959. Therefore, it can be said that hosting the SEA Games could revitalize the standard of Myanmar sports. After the Games, Myanmar people proudly say the words, "That's Myanmar". They have swallowed those words under an oppressive era for decades. The aim of this thesis is to investigate how the once-pariah state, Myanmar, used the 2013 SEA Games to present itself as a normal and friendly country and to achieve international recognition

Drill stem and Deliverability test analysis: Case study of a gas field well test analysis in Myanmar

Drill-stem tests are performed to confirm or prove the presence and the producibility of oil and gas that is detected by the other services. It is usually performed on exploration wells are often the key to determining whether a well has found a commercial hydrocarbon reservoir. Reservoir parameters specifically related to productive capacity such as pressure, permeability can be determined through drill stem test. Common sequence of a drill stem test includes of a short flow period mostly five or ten minutes, which is followed by a buildup period of about an hour that is used to determine initial reservoir pressure. Afterwards, the well is allowed to flow for next four to twenty four hours to establish stable flow to the surface then the well is shut in again for final shut in or build up test which is used to determine permeability thickness and flow potential. Drill stem tests are usually combined with deliverability tests which is referred to the testing of a well to measure its production capabilities and flow performance relationships. Most common deliverability tests are flow after flow, single-point, isochronal and modified isochronal tests. Two main applications of deliverability tests are obtaining the absolute open flow (AOF) potential and generating reservoir inflow performance relationship (IPR) or gas backpressure curve. This paper discusses the case study of drill stem test and deliverability test done on a well in one of the gas fields located in Myanmar. Topics will cover the analyses of reservoir parameters through initial build up test, final build up test during the drill stem test and analysis of flow after flow test for Darcy and Non Darcy skin factors. In addition, it will further discusses the comparison of deliverability tests (empirical and analytical) and lastly perform production forecasting. The analyses are performed through Pansystem which is the well test analysis software developed by Weatherford Inc