Evaluasi Pressure Drop pada Sumur Injeksi Uap di Lapangan Duri dengan Persamaan Beggs-Brill dan Moody

Steam injection is a heat transfer process to petroleum reservoir through multiphase flow of wet steam. Estimating pressure drop in multiphase flow is more difficult than for single-phase flow. Multiphase flow is a complex phenomenon because of the interdependence of various variables that affecting pressure drop such as flow regime, hold up, flow geometry at horizontal, vertical or deviated, flow rate of each phase and the fluid properties of each phase. The purpose of this study is to find out the most appropriate model to calculate the pressure drop in steam injection wells and understand parameters that most affecting pressure drop. Research methodology for this study is descriptive analysis. Field data from 30 injection wells in Duri field are collected and compared with 2 variations of Beggs-Brill and Moody equation, which are the original model and the model with Palmer correction. Both models are translated into a simple computing program using Excel application. Calculation result from the model is compared with the measurement results to understand the deviation or error. As the result of this study, it is shown that Beggs-Brill and Moody model without Palmer correction is suitable for steam injection application. Average error is only 0,2% with a standard deviation of 3,32%. Further information is obtained from the sensitivity analysis that the accuracy of pressure drop calculation is affected by measurement accuracy of the steam flow rate, steam quality and steam temperature

Sekolah Ramah Anak Era Revolusi Industri 4.0 di SD Muhammadiyah Pajangan 2 Berbah YOGYAKARTA

The era of industrial revolution 4.0 is known as the era of openness that calls for the quality of human resources characterized by technological capabilities. Sophisticated technology results in a decrease in character for adults, including educators. Based on research from several regions in Indonesia conducted by UNICEF (2006), it was proved that around 80% were still prone to violence in the school environment conducted by educators to students. Based on the case above, the writer wants to give advice by creating child-friendly schools that are able to provide children\u27s rights in order to be able to provide pleasant and comfortable services. This research was conducted at the Muhammadiyah Elementary School 2 in Berbah Yogyakarta. This research is a qualitative research that uses a phenomenological approach. In collecting data using the trianggulation method and reading related books. Based on the results of research to realize child-friendly schools in the industrial revolution era 4.0, SD Muhammadiyah Pajangan 2 Berbah applied. 6M, namely: 1) Cultivating 5S (greetings, smiles, greetings, courtesy and courtesy), 2) instilling Muhammadiyah pledges, 3) improving habituation (Riyadhoh), 4) improving infrastructure, 5) improving the quality of educators, and 6) terminating School canteen

Pengaruh Motivasi dengan Kemandirian Belajar Siswa Smk 2 Nurhasanah Medan dalam Pembelajaran Daring

Online learning is learning that limits teachers and students to interact in conveying knowledge. The limitations of this interaction cause various kinds of obstacles in the implementation of learning. One of them is the low independence of student learning caused by the limited time to study, making it difficult for teachers to meet learning outcomes. Therefore, the purpose of this study was to determine whether there is an influence of learning motivation on student learning independence. The method used in this research is descriptive qualitative to provide whether or not there is an influence between motivation and student learning independence. The research was conducted at SMK 2 Nurhasanah Medan with a sample of 30 people. The instrument used is a questionnaire with 20 statements each. The analysis used is univariate analysis and chi square test. The results showed that there was an influence between motivation on student learning independence

MANAJEMEN RISIKO

Setiap entitas organisasi selalu dihadapkan pada ketidakpastian yang bisa berbentuk peluang dan ancaman dalam usaha mencapai tujuan dan sasaran yang ditetapkan. Sumber ketidakpastian ini bisa berasal dari lingkungan internal ataupun eksternal organisasi. Ancaman dan peluang yang merupakan manifestasi dari bentuk ketidakpastian ini bisa disebut dengan risiko yang jika tidak dikelola dengan baik dapat menjadi gangguan dalam usaha mencapai tujuan dan sasaran organisasi. Manusia selalu dihadapkan dengan resiko sehingga resiko menjadi bagian dari kehidupan manusia, sebagaimana manusia, perusahaan pun demikian, perusahaan akan selalu berhadapan dengan risiko. Ketidakmampuan perusahaan dalam menangani berbagai risiko yang dihadapi dapat berakibat fatal. Beberapa perusahaan terpaksa harus gulung tikar karena tidak sanggup menangani risiko yang tidak terduga. Perlu diketahui dan disadari bahwa usaha pengelolaan risiko merupakan suatu yang penting bagi organisasi. Manajemen harus jeli serta mampu mengetahui faktor apa saja yang menjadi penyebab kegagalan dalam mencapai tujuan atau sasaran, sekaligus bisa mengetahui berbagai peluang yang dapat mempercepat usaha pencapaian sasaran tersebut. Dalam buku ini membahas mengenai konsep dasar sumber dan jenis risiko, penjelasan manajemen resiko dan identifikasi risiko serta daftar kerugian potensial yang dilanjutkan dengan prinsip-prinsip pengukuran risiko, pengendalian risiko, asuransi, dampak asuransi terhadap kehidupan sosial ekonomi, hukum asuransi di indonesia, mengelola bisnis asuransi dan prinsip dasar dalam asuransi dan polis asuransi serta premi asuransi, asuransi kerugian langsung dan asuransi terhadap kerugian tidak langsung