Research on Methods of Separate Stratum Injection Allocation in High Water Cut Stage

2013 ◽  
Vol 868 ◽  
pp. 645-650
Author(s):  
Lin Li
Keyword(s):  
Material Balance ◽  
High Water ◽  
Small Error ◽  
Oil Field ◽  
Petroleum Reservoir ◽  
Injection Wells ◽  
Single Well ◽  
High Water Cut Stage ◽  
High Water Cut ◽  
Water Cut

The parameters of reservoir impact all the sectors of oilfield developing after flood development, so methods of separate stratum injection allocation are researched for forecasting the petroleum reservoir performance accurately. The methods of separate stratum injection allocation are significative for remaining oil distribution, injection allocation of interval and the level of exploitation and administration in high water cut stage. First, we should derive injection-withdrawal ratio (IWR), gradient of pressure and water cut by material balance equation.The injection allocation of single well,injection wells and property of interval are determined by the research of split coefficient.We find the reservoir small error, lower water cut, high degree of reservoir recovery by anaysising the results of separate stratum injection allocation.The results show that separate stratum injection allocation is scientific and reasonable, simple and applied for the oil field in high water cut stage.

scholarly journals New Waterflooding Characteristic Curves Based on Cumulative Water Injection

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Zhiwang Yuan ◽  
Zhiping Li ◽  
Li Yang ◽  
Yingchun Zhang
Keyword(s):  
Characteristic Curve ◽  
Water Injection ◽  
Material Balance ◽  
Oil Production ◽  
High Water ◽  
Difficult Problem ◽  
Prediction Errors ◽  
High Water Cut Stage ◽  
High Water Cut ◽  
Water Cut

When a conventional waterflooding characteristic curve (WFCC) is used to predict cumulative oil production at a certain stage, the curve depends on the predicted water cut at the predicted cutoff point, but forecasting the water cut is very difficult. For the reservoirs whose pressure is maintained by water injection, based on the water-oil phase seepage theory and the principle of material balance, the equations relating the cumulative oil production and cumulative water injection at the moderately high water cut stage and the ultrahigh water cut stage are derived and termed the Yuan-A and Yuan-B curves, respectively. And then, we theoretically analyze the causes of the prediction errors of cumulative oil production by the Yuan-A curve and give suggestions. In addition, at the ultrahigh water cut stage, the Yuan-B water cut prediction formula is established, which can predict the water cut according to the cumulative water injection and solve the difficult problem of water cut prediction. The application results show Yuan-A and Yuan-B curves are applied to forecast oil production based on cumulative water injection data obtained by the balance of injection and production, avoiding reliance on the water cut forecast and solving the problems of predicting the cumulative oil production of producers or reservoirs that have not yet shown the decline rule. Furthermore, the formulas are simple and convenient, providing certain guiding significance for the prediction of cumulative oil production and water cut for the same reservoir types.

Pre-Warning and Decision Making of Water Breakthrough for Higher Water-Cut Oil Field

2011 ◽  
Vol 347-353 ◽  
pp. 688-693
Author(s):  
Han Qiao Jiang ◽  
Shuo Liang Wang ◽  
Yuan Zhang
Keyword(s):  
Decision Making ◽  
Early Warning ◽  
High Water ◽  
Oil Field ◽  
Warning Signs ◽  
Water Shutoff ◽  
Profile Control ◽  
Single Well ◽  
High Water Cut Stage ◽  
Water Cut

Major domestic oil fields have entered the period of high water now, however, choosing timing of profile control and water shutoff is always delay, Mostly have to wait until after the adoption of dynamic degradation. This article introduced the concept of early warning that is widely used in military and economic fields to profile control and water shut-off decision-making in high water-cut stage. Combination of actual situation of water shut-off decision-making, Presented a strong adaptive set of Warning signs of indicators, on the basis of the analysis of variation in the warning sighs of indicators, this paper proposed early warning model and processes of profile control and water shut-off. The model not only can give the current degree of a single well, but also can forecast the future degree of change in a period of time, so this modle could provide an effective basis for water shutoff and profile controle decision-makers.

On the Feasibility of Applying Electric Field to Increase Oil Recovery in Old Oil Field

2014 ◽  
Vol 900 ◽  
pp. 677-680
Author(s):  
Chun Hong Nie
Keyword(s):  
Electric Field ◽  
Oil Recovery ◽  
Water Injection ◽  
High Water ◽  
Oil Field ◽  
Thin Layers ◽  
Stable Yield ◽  
High Water Cut Stage ◽  
High Water Cut ◽  
Water Cut

This paper has discussed the characteristics, roles, feasibility and obvious effects of the technology by applying electric field to enhance oil recovery when the oil field is in high water cut stage and super high water cut stage. In view that most oil wells in old oil field have entered into the super high water cut production, the remaining oil in the main reservoir is in fragmented distribution with poor results of water injection and new reserves of oil mostly have a low penetration rate and are thin layers of poor physical properties, the use of the direct current field in period of high water cut is the best policy to achieve high and stable yield and is fairly promising.

The Analysis of Remaining Oil in High Water Cut Stage

2013 ◽  
Vol 274 ◽  
pp. 675-678
Author(s):  
Cheng Fu ◽  
Bin Huang
Keyword(s):  
Characteristic Curve ◽  
Material Balance ◽  
High Water ◽  
Oil Distribution ◽  
Remaining Oil ◽  
Remaining Oil Distribution ◽  
High Water Cut Stage ◽  
High Water Cut ◽  
Water Cut ◽  
Material Balance Method

The remaining oil distribution is very complex and the difficulty in tapping measures is more and more big when the west block of South-eight area has gone into the ultra-high water cut stage. So the remaining oil distribution in 109 units has been comprehensively studied on the condition that the composite water cut reaches 9.06% by establishing reservoir geologic model and proceeding reservoir numerical simulation according to recent tapping measures and remaining oil analysis experience in the process of adjusting scheme. And combined with some reservoir engineering methods such as: waterflooding characteristic curve and material balance method, obvious effects has been obtained in this research.

Production Dynamic Method to Determine the Critical Production of Bottom Water Reservoir

2012 ◽  
Vol 616-618 ◽  
pp. 985-991
Author(s):  
Liang Zhang ◽  
Shang Ming Shi ◽  
Chang Hui Yan ◽  
Ning Gan
Keyword(s):  
Bottom Water ◽  
Water Reservoir ◽  
Simulation Method ◽  
High Water ◽  
Single Well ◽  
Water Blocking ◽  
Low Efficiency ◽  
High Water Cut Stage ◽  
High Water Cut ◽  
Water Cut

Tahe oilfield of Triassic oil under low amplitude anticline group monolithic sandstone reservoirs with bottom water features, having a uniform oil-water interface, water energy sufficient. The current production wells generally see water, water cut rising too fast. Horizontal well bottom water coning phenomenon is outstanding, later period of high water cut stage manages difficulty to increase, water blocking measures have a low efficiency. Determine critical output, to improve production well life, efficient development reservoir has important significance .Based on the study of dynamic characteristics of single well and geological analysis of factors determining the critical output, and the application of numerical simulation method to verify the reasonable threshold quantity production. This method is simple and practical, can accurately make the critical output of single well.

Analysis all Kinds of Reservoir Water Degree Condition of East Xing Six District of Daqing Oilfield

2013 ◽  
Vol 868 ◽  
pp. 585-588
Author(s):  
Yi Kun Liu ◽  
Xue Ming Wang ◽  
Shi Yuan Shao ◽  
Ming Yang ◽  
Yong Ping Wang
Keyword(s):  
High Water ◽  
Oil Field ◽  
Water Flooding ◽  
Reservoir Water ◽  
Thickness Change ◽  
Degree Condition ◽  
Well Pattern ◽  
High Water Cut Stage ◽  
High Water Cut ◽  
Water Cut

East Xing Six District of Daqing oilfield development has 50 years of history, the block has entered high well density, high water cut stage. The apricot East Xing Six District demonstration zone development belongs to the continental sedimentary system, it has reservoir types and physical properties have large differences, It was long-term effected by injected water, after water flooding, water degree condition becomes very complex and unpredictable, so the washing condition analysis is an important guarantee for Daqing oilfield stable production. Using the oil field sealed coring well data, various types of reservoirs washing degree thickness change and growth are analyzed, We can know that with the further water flooding development and well pattern infilling, all kinds of oil reservoir production status; and then analyzes the potential distribution of the oilfields, and provides a basis for the development of the block and the adjustment of the next step of work, has an important guiding significance.

scholarly journals Study on Technical Measures of Romashkino Oil Field after Entering Ultra-High Water Cut Stage

Engineering ◽  
2013 ◽  
Vol 05 (07) ◽  
pp. 622-628 ◽  
Author(s):  
Liuli Lu ◽  
Zhibin Liu ◽  
Haohan Liu ◽  
Yongqin Yan
Keyword(s):  
High Water ◽  
Oil Field ◽  
High Water Cut Stage ◽  
High Water Cut ◽  
Water Cut ◽  
Technical Measures

Study on Adjustment of Atratigraphic Subdivision and Well Pattern Infilling for Offshore Heavy Oil Field in High Water Cut Stage

2020 ◽  
Author(s):  
Lai Yun Zhang ◽  
Yong Hu ◽  
Qiang Bao Jin ◽  
Wei Zhang ◽  
Lei Ji Zhang ◽  
...  
Keyword(s):  
Heavy Oil ◽  
High Water ◽  
Oil Field ◽  
Well Pattern ◽  
High Water Cut Stage ◽  
High Water Cut ◽  
Water Cut
Sign in / Sign up

Export Citation Format

Share Document