Reduced Risk Alternatives for Water Entry Detection in High Water Producing Horizontal Wells

2007 ◽  
Author(s):  
Okenufowo Ojonah ◽  
James Kohring
Keyword(s):  
Horizontal Wells ◽  
High Water ◽  
Water Entry ◽  
Reduced Risk

scholarly journals Design and Implementation of the Array Logging Tool on Horizontal Production Logging

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Wenguang Song ◽  
Haiyu Chen ◽  
Qiujuan Zhang ◽  
Jiahao Zhang
Keyword(s):  
Horizontal Wells ◽  
High Water ◽  
Oil Fields ◽  
Measuring Instruments ◽  
Conventional Production ◽  
Production Wells ◽  
Specific Retention ◽  
High Water Cut ◽  
Water Cut ◽  
Logging Tool

The measuring instruments have some errors in the measurement of high water cut production wells, and many domestic oil fields are also in high water cut state. The measured data from the conventional production logging instrument are all almost inaccurate. This project has designed a staggered probe array flow meter well logging apparatus based on the characteristic of electromagnetic wave specific retention meter that can fully cover the wellbore fluid and improve flow measurement accuracy. According to the application in horizontal wells, the accuracy of this measuring instrument now has been proved to be more than 90% and can meet the requirements of production logging interpretation in horizontal wells.

Fieldwide Application of Autonomous Inflow Control Valve in Increasing the Field Recovery in One of the Matured Fields in the Sultanate of Oman: Case Study

2021 ◽  
Author(s):  
Salim Buwauqi ◽  
Ali Al Jumah ◽  
Abdulhameed Shabini ◽  
Ameera Harrasi ◽  
Tejas Kalyani ◽  
...  
Keyword(s):  
Control Valve ◽  
Oil Production ◽  
Horizontal Wells ◽  
High Water ◽  
Lessons Learned ◽  
Water Production ◽  
Sultanate Of Oman ◽  
Well Performance ◽  
Reservoir Conditions ◽  
Water Cut

Abstract One of the largest operators in the Sultanate of Oman discovered a clastic reservoir field in 1980 and put it on production in 1985. The field produces viscous oil, ranging from 200 - 2000+ cP at reservoir conditions. Over 75% of the wells drilled are horizontal wells and the field is one of the largest producers in the Sultanate of Oman. The field challenges include strong aquifer, high permeability zones/faults and large fluid mobility contrast have resulted that most of the wells started with very high-water cuts. The current field water cut is over 94%. This paper details operator's meticulous journey in qualification, field trials followed by field-wide implementation and performance evaluation of Autonomous Inflow Control Valve (AICV) technology in reducing water production and increasing oil production significantly. AICV can precisely identify the fluid flowing through it and shutting-off the high water or gas saturated zones autonomously while stimulating oil production from healthy oil-saturated zones. Like other AICDs (Autonomous Inflow Control Device) AICV can differentiate the fluid flowing through it via fluid properties such as viscosity and density at reservoir conditions. However, AICVs performance is superior due to its advanced design based on Hagen-Poiseuille and Bernoulli's principles. This paper describes an AICV completion design workflow involving a multi-disciplinary team as well as some of the field evaluation criteria to evaluate AICV well performance in the existing and in the new wells. The operator has completed several dozens of production wells with AICV technology in the field since 2018-19. Based on the field performance review, it has shown the benefit of accelerating oil production as well as reduction of unwanted water which not only reduces the OPEX of these wells but at the same time enormous positive impact on the environment. Many AICV wells started with just 25-40 % water cut and are still producing with low water cut and higher oil production. Based on the initial field-wide assessment, it is also envisaged that AICV wells will assist in achieving higher field recovery. Also, AICV helped in mitigating the facility constraints of handling produced water which will allow the operator continued to drill in-fill horizontal wells. Finally, the paper also discusses in detail the long-term performance results of some of the wells and their impact on cumulative field recovery as well as lessons learned to further optimise the well performance. The technology has a profound impact on improved sweep efficiency and as well plays an instrumental role in reducing the carbon footprint by reducing the significant water production at the surface. It is concluded that AICV technology has extended the field and wells life and proved to be the most cost-effective field-proven technology for the water shut-off application.

scholarly journals Water intake from foods and beverages and risk of mortality from CVD: the Japan Collaborative Cohort (JACC) Study

2018 ◽  
Vol 21 (16) ◽  
pp. 3011-3017 ◽  
Author(s):  
Renzhe Cui ◽  
Hiroyasu Iso ◽  
Ehab S Eshak ◽  
Koutatsu Maruyama ◽  
Akiko Tamakoshi ◽  
...  
Keyword(s):  
Ischaemic Stroke ◽  
Water Intake ◽  
Haemorrhagic Stroke ◽  
High Water ◽  
International Classification Of Diseases ◽  
Hazard Ratios ◽  
Risk Of Mortality ◽  
Classification Of Diseases ◽  
High Water Intake ◽  
Reduced Risk

AbstractObjectiveTo examine the association of water intake with risk of mortality from CVD.DesignProspective cohort study.Setting/SubjectsA total of 22 939 men and 35 362 women aged 40–79 years enrolled in the Japan Collaborative Cohort (JACC) Study with available data regarding water intake from foods and beverages. The underlying causes of death were determined based on the International Classification of Diseases.ResultsDuring the median 19·1 years of follow-up, 1637 men and 1707 women died from CVD. There was an inverse trend between high water intake and risk of CVD in both sexes. Compared with participants in the lowest quintile of water intake, the multivariable-adjusted hazard ratios (95 % CI) for mortality from total CVD in the highest quintile of water intake were 0·88 (0·72, 1·07; P for trend=0·03) in men and 0·79 (0·66, 0·95; P for trend=0·10) in women. Those for CHD were 0·81 (0·54, 1·21; P for trend=0·06) in men and 0·60 (0·39, 0·93; P for trend=0·20) in women. Reduced risk of mortality from ischaemic stroke was also observed among women in the highest water intake quintile: 0·70 (0·47, 0·99; P for trend=0·19). There was no association between water intake and mortality from haemorrhagic stroke in either sex.ConclusionsHigher intake of fluids from foods and beverages was associated with reduced risk of cardiovascular mortality in both sexes and reduced risk of ischaemic stroke in women in Japan.

Applying Horizontal Wells to Develop Oilfields with Complex Low Relief Structure in High Water Cut Stage in Tarapoa

2015 ◽  
Author(s):  
Haikuan Zhang ◽  
Xing Zhang ◽  
Xinjun Zhao ◽  
Quan Hu ◽  
Xuepeng Wan ◽  
...  
Keyword(s):  
Horizontal Wells ◽  
High Water ◽  
Relief Structure ◽  
High Water Cut Stage ◽  
High Water Cut ◽  
Water Cut

Meeting the Challenges in Downhole Scale Control for High-Water-Production Horizontal Wells in an Environmentally Sensitive Part of the Norwegian North Sea

2012 ◽  
Vol 27 (04) ◽  
pp. 382-389
Author(s):  
Ping Chen ◽  
Harry Montgomerie ◽  
Thomas Hagen ◽  
Olav Vikane ◽  
Bjorn Juliussen ◽  
...  
Keyword(s):  
North Sea ◽  
Horizontal Wells ◽  
High Water ◽  
Water Production ◽  
Environmentally Sensitive ◽  
Scale Control

Identification of Water Entry with New Integrated Production Logging Tool in Challenging Horizontal Wells

2005 ◽  
Author(s):  
Talal M. Al-Beaiji ◽  
Mubarak Mohammad Al-Abdullatif ◽  
Saleh Mohamed Al-Dossari ◽  
Murat Zeybek
Keyword(s):  
Horizontal Wells ◽  
Water Entry ◽  
Integrated Production ◽  
Logging Tool
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