Drill Stem Test Design Optimization Improves Quality of Reservoir Data and Time Requirements for Deep and Ultra Deep Water Well Testing

2012 ◽  
Author(s):  
Tomas Cervantes ◽  
Gerardo Bravo ◽  
Jan Rene Loaiza ◽  
Pablo Ruiz
Keyword(s):  
Design Optimization ◽  
Deep Water ◽  
Test Design ◽  
Well Testing ◽  
Drill Stem ◽  
Water Well ◽  
Time Requirements

Influence of Perforation Explosion Load on the Tubing in Deep Water Well Testing

2019 ◽  
Vol 55 (5) ◽  
pp. 643-651
Author(s):  
Yufa He ◽  
Hui Zhang ◽  
TengFei Sun ◽  
Jian Dong ◽  
Qiao Deng ◽  
...  
Keyword(s):  
Deep Water ◽  
Well Testing ◽  
Water Well ◽  
Explosion Load

ELECTRIC LOGGING APPLIED TO GROUND‐WATER EXPLORATION

Geophysics ◽  
1951 ◽  
Vol 16 (1) ◽  
pp. 115-139 ◽  
Author(s):  
P. H. Jones ◽  
T. B. Buford
Keyword(s):  
Ground Water ◽  
Gulf Coast ◽  
Salt Water ◽  
Drill Stem ◽  
Quality Of Water ◽  
Water Well ◽  
Open Hole ◽  
Log Interpretation

A method is described for the determination of the quality of ground water in granular aquifers penetrated by rotary‐drilled holes electrically logged. Conventional techniques of electric‐log interpretation, to determine true bed resistivity from apparent resistivity values, are briefly described; and a method for converting water‐resistivity values into hypothetical chemical analyses is explained. The objective of the method is to narrow the limits of error in quality‐of‐water estimates based upon electric logs. Water‐well contractors are fully aware of the risks attendant in making drill‐stem tests in open hole, which is the method now employed to obtain representative samples of formation water. Packer failure results in contaminated samples; hole collapse may mean loss of drill stem, screen, and the hole. In the Gulf Coast where water‐well tests range in depth from 100 to 3,000 feet, methods that will eliminate at least a part of the need for drill‐stem tests deserve consideration. The paper deals also with methods of determining formation porosity in situ, which is an important factor in salt‐water‐encroachment problems.

Study of dynamic pressure on the packer for deep-water perforation

Open Physics ◽  
2021 ◽  
Vol 19 (1) ◽  
pp. 215-223
Author(s):  
Hao Huang ◽  
Qiao Deng ◽  
Hui Zhang
Keyword(s):  
Deep Water ◽  
Peak Pressure ◽  
Orthogonal Design ◽  
Dynamic Pressure ◽  
Three Dimensional ◽  
Calculation Model ◽  
Well Testing ◽  
Technical Problems ◽  
Wellbore Pressure ◽  
Three Dimensional Finite Element

Abstract The packer is one of the most important tools in deep-water perforation combined well testing, and its safety directly determines the success of perforation test operations. The study of dynamic perforating pressure on the packer is one of the key technical problems in the production of deep-water wells. However, there are few studies on the safety of packers with shock loads. In this article, the three-dimensional finite element models of downhole perforation have been established, and a series of numerical simulations are carried out by using orthogonal design. The relationship between the perforating peak pressure on the packer with the factors such as perforating charge quantity, wellbore pressure, perforating explosion volume, formation pressure, and elastic modulus is established. Meanwhile, the database is established based on the results of numerical simulation, and the calculation model of peak pressure on the packer during perforating is obtained by considering the reflection and transmission of shock waves on the packer. The results of this study have been applied in the field case of deep-water well, and the safety optimization program for deep-water downhole perforation safety has been put forward. This study provides important theoretical guidance for the safety of the packer during deep-water perforating.

Case History: Lessons learned From Retrieval of Coiled Tubing Stuck by Massive Hydrate Plug When Well Testing in an Ultra Deep Water Gas Well in Mexico

2011 ◽  
Author(s):  
Victor Gerardo Vallejo ◽  
Aciel Olivares ◽  
Pablo Crespo Hdez ◽  
Eduardo R. Roman ◽  
Claudio Rogerio Tigre Maia ◽  
...  
Keyword(s):  
Deep Water ◽  
Case History ◽  
Lessons Learned ◽  
Well Testing ◽  
Gas Well ◽  
Coiled Tubing ◽  
Hydrate Plug ◽  
Water Gas

scholarly journals Intervensi Metode Drill Melalui Pre Dan Post Conference Terhadap Kemampuan Perawat Menerapkan Terapi Reminiscence

2020 ◽  
Vol 5 (2) ◽  
pp. 146-161
Author(s):  
Ni Made Diah Natalia Indrasari ◽  
Ni Made Nopita Wati ◽  
Ni Luh Putu Thrisna Dewi ◽  
Made Nursari
Keyword(s):  
The Elderly ◽  
Statistical Test ◽  
Test Design ◽  
Learning Method ◽  
Reminiscence Therapy ◽  
Drilling Method ◽  
Standard Operating ◽  
Post Test ◽  
Paired T Test

Reminiscence therapy is a type of cognitive therapy, which uses memory to maintain mental health and improve the quality of life of the elderly. Nurses are expected to be able to provide reminiscence therapy according to Standard Operating Procedures. The drilling method is a learning method to form a habit so that it can increase the ability of nurses to provide reminiscence therapy. The purpose of this study was to determine the effect of the drill method through pre and post-conference on the ability of nurses to apply reminiscence therapy. This type of pre-experimental research, using a One-group pre-post test design. The number of samples is 10 people with purposive sampling. Data collection using the observation sheet. The results showed that the average pre-test nurse's ability was 70.769, including in the sufficient category, increasing to 95.899 when the post-test was in a good category. The results of the Paired t-test statistical test showed that the value of p = 0.000 <0.05 and count = 7.503> t table df 9 = 2.262. This shows that there is an effect of the drill method through pre and post-conference on the ability of nurses to apply reminiscence therapy. The drilling method can improve nurses' ability to apply SOP, especially reminiscence therapy through regular exercises with frequent frequency and sequentially according to the steps in SOP.

scholarly journals HUBUNGAN PERUBAHAN STANDAR PORSI MAKAN DENGAN SISA MAKANAN PASIEN RUMAH SAKIT HOLISTIK TAHUN 2016 (STUDI SISA NASI PADA MENU MAKAN SIANG DIET DI RS HOLISTIK)

2017 ◽  
Vol 40 (1) ◽  
pp. 1
Author(s):  
Fatkhurohman Fatkhurohman ◽  
Yanesti Nuravianda Lestari ◽  
Dian Titis Torina
Keyword(s):  
Food Waste ◽  
Food Service ◽  
Wilcoxon Test ◽  
Test Design ◽  
High Food ◽  
Chi Square ◽  
Hospital Patients ◽  
Post Test ◽  
Weighing Method

The high food waste in a hospital showed the quality of food service was not optimal. The Holistic Hospital of Purwakarta that used small, medium, and lage portion standards in its food service faced some problems regarding high  food  waste. This study aimed to find out the effect of meal’s portion standard changes on the food waste in  Holistic Hospital patients. Pre-experimental study using one group pre-post test design was done on 29 patients using convenient sampling technique.The changing of meal’s portion was done for rice from medium portion (150 g) to small (0.5 or 0.25 portion). Measurement of food waste used weighing method. Data analysis used Wilcoxon test continued with Kendall-Tau correlation test. The results showed that 65.5 percent of patients were aged around 42-68 years old receiving positive diet and 34.5 percent were non-positive diets. At the beginning of diet, the food waste of rice of all patients was high (27.4-64.9% waste of rice) and it was significantly decreased after small portion was given, even though there were still 27.6 percent of patients with > 20 percent waste of rice. There was a significant influence between the change in diet portion of patients toward food  waste of rice (r=0.804; p<0.05). It was concluded that the changes in diet portion of patients were able to reduce the food  waste.ABSTRAK  Tingginya sisa makanan pasien di Rumah Sakit menunjukkan kualitas penyelenggaraan makanan yang belum optimal. Rumah Sakit Holistic Purwakarta yang menggunakan standar porsi small, medium, dan large dalam penyelenggaraan makanan masih mengalami kendala berupa tingginya sisa makanan pasien. Penelitian ini bertujuan untuk mengetahui pengaruh perubahan standar porsi terhadap sisa makanan pasien di Rumah Sakit Holistic Purwakarta. Penelitian pre-eksperimen dengan one group pre-post test design ini dilakukan pada 29 orang pasien dengan teknik convenient sampling. Perubahan porsi makanan dilakukan pada nasi putih dari porsi medium (150 g) menjadi small (0,5 porsi atau 0,25 porsi). Pengukuran sisa makanan menggunakan metode penimbangan. Analisis data menggunakan uji Chi-Square dan uji Wilcoxon yang dilanjutkan uji korelasi Kendall-Tau. Hasil penelitian menunjukkan bahwa sebanyak 65,5 persen pasien berusia 42-68 tahun menerima diet positif dan 34,5 persen menerima diet non-positif. Sisa porsi nasi di awal pemberian diet pada seluruh pasien masih tinggi (27,4-64,9% sisa nasi) dan menurun secara signifikan setelah porsi nasi diberikan dalam porsi small (p<0,05) meskipun masih terdapat 27,6 persen pasien dengan sisa nasi > 20 persen. Terdapat pengaruh yang signifikan antara perubahan porsi diet pasien terhadap sisa nasi (r=0,804; p<0,05). Dapat disimpulkan bahwa perubahan porsi nasi pada diet pasien mampu menurunkan sisa makanan. Kata kunci: standar porsi, sisa makanan

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