A New Method to Discriminate Effectively the Influence of Water Injection and Natural Water Influx upon Reservoir Pressure System: A Case History from Cainan Oilfield

2010 ◽  
Author(s):  
Renshi Nie ◽  
Yonglu Jia ◽  
Nan Shen ◽  
Xusheng Qin ◽  
Xingwang Luo ◽  
...  
Keyword(s):  
Case History ◽  
Natural Water ◽  
Water Injection ◽  
New Method ◽  
Reservoir Pressure ◽  
Pressure System ◽  
System A ◽  
Water Influx ◽  
Influence Of Water

scholarly journals INTELLIGENT NATURAL DUMP FLOODING WELL - CASE STUDY FROM THE AREA OF THE WESTERN PERSIAN/ARABIAN GULF AND POSSIBLE APPLICATION IN THE CROATIAN MATURE OIL FIELD BENIČANCI

2020 ◽  
Vol 35 (4) ◽  
pp. 21-31
Author(s):  
Damir Zadravec ◽  
Vladislav Brkić
Keyword(s):  
Natural Water ◽  
Water Injection ◽  
Arabian Gulf ◽  
Pilot Project ◽  
Oil Field ◽  
Oil Reservoir ◽  
Reservoir Pressure ◽  
Well Completion ◽  
Execution Phase ◽  
Single Well

In the process of oil reservoir waterflooding, natural water dump flood technology for reservoir pressure decline prevention is considered as an unconventional but technically less demanding, more economical and safer method in comparison to surface power water injection. With natural dump flood technology, a single well serves as a water producer from a water bearing layer (aquifer) and simultaneously through gravity and the pressure difference between the aquifer and the depleted oil reservoir, it serves as a water injector inside the oil reservoir without expensive and complex injecting water treatment facilities at the surface. With the use of such technology and the running of intelligent well completion, it allows for the permanent monitoring of water production, injection rates and temperature inside the chosen reservoir. In addition, in offshore operations, the use of a subsea wellhead with a mud line suspension system allows for the placing of the injector well at the best predetermined position for water injection in a targeting reservoir and, together with an efficient subsurface acoustic data acquisition system, leads to better reservoir management and well integrity improvement. The overview and critical reflection of the drilling and intelligent completion of a natural dump flooding well for reservoir pressure support in partially depleted oil reservoirs in the Persian/Arabian Gulf has been given, referring to both their preparation and execution phase. The possibility of applying natural water dump flood was also considered in the Croatian onshore Beničanci oil field through a pilot project of water injection into the Be-62 well.

Antifibrinolytic Action of the Anticoagulant Split Product of Fibrinogen

1968 ◽  
Vol 19 (03/04) ◽  
pp. 526-532 ◽  
Author(s):  
L. B Nanninga ◽  
M. M Guest
Keyword(s):  
Experimental System ◽  
New Method ◽  
System A ◽  
Fibrinogenolytic Activity

SummaryThe purified anticoagulant split product of fibrinogen has antifibrinolytic and anti-fibrinogenolytic activity. This was investigated by lysis times of fibrin and by the rate of disappearance of fibrinogen in plasma and in a purified system. A new method was used to measure fibrinogenolytic activity. In the experimental system which we have used no indication of additional breakdown of the anticoagulant split product in the presence of fibrinolysin was obtained.

UGR CALCULATION BASED ON THE LUMINANCE SPATIAL-ANGULAR DISTRIBUTION

2020 ◽  
Vol 2020 (4) ◽  
pp. 25-32
Author(s):  
Viktor Zheltov ◽  
Viktor Chembaev
Keyword(s):  
Monte Carlo ◽  
Angular Distribution ◽  
Monte Carlo Method ◽  
Visual Task ◽  
New Method ◽  
Lighting System ◽  
Preliminary Assessment ◽  
System A ◽  
The Monte Carlo Method

The article has considered the calculation of the unified glare rating (UGR) based on the luminance spatial-angular distribution (LSAD). The method of local estimations of the Monte Carlo method is proposed as a method for modeling LSAD. On the basis of LSAD, it becomes possible to evaluate the quality of lighting by many criteria, including the generally accepted UGR. UGR allows preliminary assessment of the level of comfort for performing a visual task in a lighting system. A new method of "pixel-by-pixel" calculation of UGR based on LSAD is proposed.

New method of monitoring the transmission range of coal seam water injection and correcting the monitoring results

Measurement ◽  
2021 ◽  
Vol 177 ◽  
pp. 109334
Author(s):  
Jian Chen ◽  
Weimin Cheng ◽  
Gang Wang ◽  
Haomiao Li ◽  
Yanyan Li
Keyword(s):  
Coal Seam ◽  
Water Injection ◽  
New Method ◽  
Transmission Range

scholarly journals Studying of changes in the interaction of well during the water injection process

2019 ◽  
pp. 81-85
Author(s):  
Damir K. Sagitov
Keyword(s):  
Correlation Coefficient ◽  
Pair Correlation ◽  
Water Injection ◽  
Reservoir Pressure ◽  
Maintenance System ◽  
Displacement Front ◽  
Injection Process ◽  
Production Wells

The study of the causes of changes in the effectiveness of the reservoir pressure maintenance system in terms of the interaction of injection and production wells is an important and insufficiently studied problem, especially in terms of the causes of the attenuation of stable connections between the interacting wells. Based on the results of the calculation of the Spearman pair correlation coefficient, the reasons for the change in the interaction of wells during the flooding process at various stages were estimated. Of particular interest are identified four characteristic interactions, which are determined by the periods of formation of the displacement front.

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