The Horizontal Well Production Technique with Thin Bedded Bottom Water Reservoir in Luliang Oil Field

2010 ◽  
Author(s):  
Jin Huo ◽  
Guoxin Shi ◽  
Jianguo Lu ◽  
Linxiang Sang ◽  
Jun Shi ◽  
...  
Keyword(s):  
Horizontal Well ◽  
Bottom Water ◽  
Water Reservoir ◽  
Oil Field ◽  
Production Technique ◽  
Well Production

New Cold-Production Technique for Heavy Oil With Strong Bottomwaterdrive

SPE Journal ◽  
2013 ◽  
Vol 19 (02) ◽  
pp. 270-279 ◽  
Author(s):  
Wenting Qin ◽  
Andrew K. Wojtanowicz ◽  
Christopher D. White
Keyword(s):  
Oil Recovery ◽  
Heavy Oil ◽  
Horizontal Well ◽  
High Water ◽  
Oil Field ◽  
Analytical Models ◽  
Production Technique ◽  
Water Separation ◽  
Well Production ◽  
Oil Water Separation

Summary Few heavy-oil reservoirs with strong bottomwaterdrive have been developed successfully, because severe water coning causes low ultimate recovery, low well productivity, and high water production. In these reservoirs, thermal and gravity-assisted methods that could improve recovery are perceived as economically unfavorable or technologically infeasible. In this paper, we propose a new cold-production technique, called the bilateral water sink (BWS), to meet those challenges. The BWS method suppresses water cresting by producing oil and water simultaneously from bilateral horizontal wells completed in the oil and water zones separately. Unlike conventional horizontal-well production, where water cresting causes water to bypass oil, making the waterdrive mechanism ineffective, the BWS prevents water cresting by altering the potential distribution in the near-well region. With cresting suppressed, water drives the oil from the edges of the well drainage area to the well, resulting in high ultimate recovery. By exploiting the natural reservoir energy of the bottomwaterdrive, the BWS becomes economically, technically, and environmentally appealing—especially for offshore fields where cold production is the only option and oil/water separation is a problem. In this paper, new analytical models are derived to design the water and oil rates for the BWS and to quantify the method's effect of avoiding water cresting and improving oil recovery. The analytical models are verified with numerical simulations. The BWS technique is also theoretically demonstrated by use of data from an actual oil field. The results show a considerable increase of oil recovery, from less than 15% for a conventional horizontal well to approximately 40% for a BWS well.

Research on Factors and Model of Water Production of Bottom Water Reservoir

2012 ◽  
Vol 594-597 ◽  
pp. 2590-2597
Author(s):  
Liang Zhang ◽  
Yi Zuo Shi ◽  
Chang Hui Yan ◽  
Xiao Xiong Wu ◽  
Pan Zhao ◽  
...  
Keyword(s):  
Bottom Water ◽  
Water Reservoir ◽  
Oil Field ◽  
Control Measures ◽  
High Yield ◽  
Oil Well ◽  
Water Production ◽  
Mode Water ◽  
Production Mode ◽  
Tahe Oil Field

In block one of Tahe oil field, the Triassic Lower Oil Formation sand with a low-amplitude anticline has a characteristic of bottom water reservoir and a uniform oil/water contact, bottom water is energetic, natural water drive, rock and fluid depletion drive. With the continuous development, oilfield has entered high water cut stage, bottom water coning is significant, oil well has rising of the water content and production decline. Summarized influencing factors of water production and water production mode in block one of Tahe oil field. According to water production factors of oil well, we draw four kinds of water production mode: water production mode of tectonic position, water production mode of poor fault-sealing prediction, water production mode of developed into inter-layers, water production mode of high specific inflow segments. Putting forward four kinds of water production mode provide a theoretical basis to control measures for high yield water of later oil well.

Existence of Flow Barriers Improves Horizontal Well Production in Bottom Water Reservoirs

2008 ◽  
Author(s):  
Peng Zhang ◽  
Xian-Huan Wen ◽  
Lizhen Ge ◽  
Bo Li ◽  
QingHong Yang ◽  
...  
Keyword(s):  
Horizontal Well ◽  
Bottom Water ◽  
Water Reservoirs ◽  
Well Production

A New Model for Evaluation of Horizontal Well in Bottom Water Reservoirs

2013 ◽  
Vol 411-414 ◽  
pp. 486-491
Author(s):  
Yue Dong Yao ◽  
Yun Ting Li ◽  
Yuan Gang Wang ◽  
Ze Min Ji
Keyword(s):  
Oil Recovery ◽  
Field Data ◽  
Horizontal Well ◽  
Bottom Water ◽  
Interaction Analysis ◽  
Evaluation Model ◽  
Water Reservoir ◽  
Well Performance ◽  
Water Reservoirs ◽  
Actual Field

It is the aim of this research to describe the horizontal well performance in different conditions, this paper firstly introduces 13 dimensionless variables to describe the influence factors of horizontal well performance in bottom water reservoir and calculates the range of all the variations from low to high level by making a statistics of the actual field data of the 23 horizontal wells, then establishes the oil recovery model with response surface method using a 3 level-13 variables Box-Behnken design (BBD) . Based on the evaluation model, single factor sensitivity and interaction analysis between any two factors are carried out. Finally, research on horizontal well in typical bottom water reservoirs indicates that the values calculated by the new evaluation model fit the actual field data, which proves that the evaluation model can provide criteria for the design or optimization of horizontal well development in a bottom water reservoir.

scholarly journals Productivity evaluation of horizontal well in heterogeneous reservoir with composite water aquifer

2021 ◽  
Vol 11 (3) ◽  
pp. 1363-1373
Author(s):  
Hui Yuan ◽  
Wenhong Li ◽  
Yingzhong Yuan ◽  
Jiao Luo ◽  
Wende Yan
Keyword(s):  
Horizontal Well ◽  
Bottom Water ◽  
Superposition Principle ◽  
Research Result ◽  
Water Reservoir ◽  
Water Contact ◽  
Heterogeneous Reservoir ◽  
Oil Water ◽  
Productivity Prediction ◽  
Thin Reservoir

AbstractHorizontal well is an important way to develop thin reservoir with edge-bottom water aquifer. For the horizontal well near oil–water contact, the reservoir have the features of edge water and bottom water at the same time. The productivity formula of horizontal well in pure edge water or pure bottom water reservoir is not fully applicable to this type of reservoir. For the heterogeneous reservoir with composite water aquifer, the horizontal well is divided into multiple well sections by using the concept of multi-segment well. Based on the seepage mechanics theory and potential superposition principle, considering the mutual interference between multi well sections, the productivity formula of horizontal well in heterogeneous reservoir with composite water aquifer is established. The new productivity formula considers the effect of reservoir heterogeneity, the quasi-linear flow of lateral edge water and the ellipsoidal flow of vertical bottom water. It can effectively determine the influence range and drainage distance of edge water in a heterogeneous reservoir with composite water aquifer. According to the test data of horizontal wells in Weizhou 11-1 oilfield, the drainage distance b of edge water is fitted and used to predict the productivity of new wells, and the result is very good. The research result lays a foundation for productivity prediction of horizontal well in heterogeneous reservoir with composite water aquifer.

scholarly journals Horizontal Well Completion with Multiple Artificial Bottom Holes Improves Production Performance in Bottom Water Reservoir

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Haidong Wang ◽  
Yikun Liu
Keyword(s):  
Pressure Distribution ◽  
Horizontal Well ◽  
Bottom Water ◽  
New Technology ◽  
Water Reservoir ◽  
Pressure Profile ◽  
Production Performance ◽  
Well Completion ◽  
Horizontal Wellbore ◽  
Control Technologies

The horizontal well completion with stinger is usually used to control the bottom water cone. Although the pressure profile and the inflow profile along the horizontal wellbore can be divided into two parts by the stinger, these profiles have not really flattened. In order to flatten the pressure distribution and inflow distribution further, it proposes a new technology. This new horizontal well has multiple artificial bottom holes (MABH) along the wellbore and it has application potential. In order to verify the effectiveness of MABH technology, a model of horizontal well completion with MABH was established, and the production performance of different water cone control technologies was analyzed: conventional horizontal well, stinger completion horizontal well, and MABH completion horizontal well. The results show that the MABH technology has more advantages than the stinger technology. The uniformity of pressure distribution of the 6-MABH horizontal well is 55% higher than that of the horizontal well with string technology, and the uniformity of inflow distribution is increased by 65.25%. At the same time, although the operation of MABH technology is very simple, it should follow a rule of MABH installation: the position of the first MABH should be set at 242.5 m from the heel hole of the horizontal wellbore, and the other interval is 92.4 m.

scholarly journals Water Breakthrough Shape Description of Horizontal Wells in Bottom-Water Reservoir

2014 ◽  
Vol 2014 ◽  
pp. 1-9
Author(s):  
Shijun Huang ◽  
Baoquan Zeng ◽  
Fenglan Zhao ◽  
Linsong Cheng ◽  
Baojian Du
Keyword(s):  
Physical Model ◽  
Horizontal Well ◽  
Bottom Water ◽  
Water Reservoir ◽  
Horizontal Wells ◽  
Analysis Model ◽  
Heterogeneous Reservoir ◽  
Water Breakthrough ◽  
Original Oil In Place ◽  
Water Cut

Horizontal wells have been applied in bottom-water reservoir since their advantages were found on distribution of linear dropdown near wellbore, higher critical production, and more OOIP (original oil in place) controlled. In the paper, one 3D visible physical model of horizontal physical model is designed and built to simulate the water cresting process during the horizontal well producing and find water breakthrough point in homogenous and heterogeneous reservoir with bottom water. Water cresting shape and water cut of horizontal well in between homogenous and heterogeneous reservoir are compared on the base of experiment’s result. The water cresting pattern of horizontal well in homogeneous reservoir can be summarized as “central breakthrough, lateral expansion, thorough flooding, and then flank uplifting.” Furthermore, a simple analysis model of horizontal well in bottom water reservoir is established and water breakthrough point is analyzed. It can be drawn from the analysis result that whether or not to consider the top and bottom border, breakthrough would be located in the middle of horizontal segment with equal flow velocity distribution.

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