Search

Introduction. Nanotechnology has received a lot of attention in the oil and gas industry as an effective means of improving properties and increasing production rates, especially in harsh environments such as ultra-deep and shallow gas fields, deviated and horizontal wells, geothermal zones, and high pressure/high temperature (HPHT) areas. These environments present numerous economic, technical, operational, and HSE challenges that need to be addressed.Cementing operations play a critical role in these environments, as the cement sheath serves as a barrier to meet the different well conditions, including pressure, temperature, and the flow of liquids or gases. The use of nanomaterials as additives to cement has been credited with improving its properties and performance under these complicated conditions. Methods and materials. The study presents an analysis of the effect of pressure and temperature on the behavior and complexity of cementing operations in high-pressure wells. Analytical performance of the main characteristics of nanoclay (structural and mechanical) and evaluation of its effect on the durability and strength of cement slurry during well construction are presented. Results and Discussion. The results of the study allow us to conclude that nanoclay can be widely used as an additive to improve the durability and properties of cement-based materials under difficult conditions. Conclusions. The results of this study provide valuable information to researchers, engineers and practitioners in the field of cementing oil and gas wells, especially in solving problems related to providing the most favorable conditions for well operation with the long-term use of more durable cement slurry

Analisis rheologi perlu dilakukan terhadap slurry propelan untuk mengetahui viskositas dan castability-nya. Hal ini berpengaruh pada tingkat homogenitas dan nilai Isp sebagai karakteristik utama propelan padat komposit. Penelitian ini bertujuan untuk mengetahui karakteristik rheologi slurry propelan berbasis HTPB dan DOA menggunakan analisis viskositas. Metode pengukuran viskositas dilakukan dengan parameter suhu, waktu curing dan shear rate. Hasil pengukuran menunjukkan bahwa viskositas menurun dengan kenaikan suhu dan juga sebaliknya, viskositas meningkat dengan bertambahnya waktu curing. Melalui persamaan Power Law, diperoleh Koefisien konsistensi (K) antara 2,1148-2,2877 yang nilainya meningkat seiring dengan turunnya temperatur. Bertambahnya nilai K mengartikan energi yang dibutuhkan oleh unit operasi untuk mencetak propelan ke dalam tabung cetakan juga semakin meningkat. Sedangkan nilai indeks sifat alir (n) antara 0,1535 - 0,5128 menunjukkan bahwa slurry propelan merupakan fluida Non-Newtonian dengan perilaku shear-thinning (pseudoplastik) karena n

ABSTRAK. Simulasi penentuan kebutuhan pompa energi pada sistem bahan makanan transfer cair dengan menggunakan parameter software hasil krim reologi kental manis. Software ini dapat digunakan untuk menentukan energi pompa yang dibutuhkan oleh sistem transfer krim kental manis sehingga tidak terjadinya produk lompat dan gelembung yang menghancurkan krim kental manis. Sehingga pada saat dipasarkan, produk tidak lagi menarik dan baik untuk dikonsumsi. Sebelum melakukan simulasi dengan program komputer, dibutuhkan data viskositas (kekentalan) parameter reologi krim kental manis. Hal ini diperlukan untuk mengetahui pengaruh parameter reologi untuk energi pompa yang diperlukan oleh sistem transfer krim kental manis. Dari simulasi diperoleh gambaran yang baik lebih untuk merancang suatu sistem transfer krim kental manis di salah satu pabrik pengolahan. A Simulation to Determine the Requirement of Pump Power on Transport System for Liquid Food Material using Rheology Parameter of Sweetened Condensed Milk ABSTRACT. A simulation using a software to determine the requirement of pump power on transport system for liquid food material using rheology as parameter for sweetened condensed milk. The software was able to determine the pump energy required by a transfer system of sweetened condensed milk in order to prevent the occurrence of the product jump and the effervescence. The effervescence would destroy the cream of sweetened condensed milk, so at the time of marketing, the product was no longer in good condition to consume. Before conducting simulation using computer program, viscosity data of sweetened condensed milk was required to know the influence parameter of rheology on pump power required by a transport system of sweetened condensed milk. From the simulation, a more good description was obtained to design a transfer system of sweetened condensed milk at one particular factory.