Profile Control and Water Shutoff

2018 ◽  
pp. 157-195
Author(s):  
Caili Dai ◽  
Fulin Zhao
Keyword(s):  
Water Shutoff ◽  
Profile Control

Characteristics of Microgels Designed for Water Shutoff and Profile Control

2003 ◽  
Author(s):  
Yujun Feng ◽  
Rene Tabary ◽  
Michel Renard ◽  
Christel Le Bon ◽  
Aziz Omari ◽  
...  
Keyword(s):  
Water Shutoff ◽  
Profile Control

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.

Water Shutoff and Profile Control with the Combination of Single Fluid and Double Fluids

2014 ◽  
Vol 962-965 ◽  
pp. 741-745
Author(s):  
Hao Wang
Keyword(s):  
High Temperature ◽  
Temperature Profile ◽  
Field Tests ◽  
Economic Benefits ◽  
Thermal Recovery ◽  
Working Fluids ◽  
Water Shutoff ◽  
Profile Control ◽  
Utilization Ratio ◽  
Chemical Water

Both the single fluid and double-fluid method for water shutoff and profile control have their limitations. If the two kinds of working fluids are used in combination for water shutoff and profile control, each of them exhibits its own plugging capability while they can form plugging materials when they contact and react with each other. This method can be used as a plugging system in the formations, eliminating the low utilization ratio and huge waste of the single or double-fluid chemicals. It can enhance the plugging capability and improve the water shutoff and profile control results. The single and double fluid (SAD) system has been proved satisfactory in the field tests of conventional chemical water shutoff and profile control, high temperature chemical water shutoff and high temperature profile control and channeling-plugging in thermal recovery wells. The economic benefits are remarkable from the field tests of 14 wells.

Development and Evaluation of Salt-Resisting Polymer Gel Profile Control Agent

2013 ◽  
Vol 781-784 ◽  
pp. 426-430 ◽  
Author(s):  
Guang Yang ◽  
Jian Zhang ◽  
Xin Sheng Xue ◽  
Ying Xian Cui ◽  
Wen Sen Zhao
Keyword(s):  
High Temperature ◽  
Storage Modulus ◽  
Water Erosion ◽  
Control Agent ◽  
Polymer Gel ◽  
Laboratory Findings ◽  
Water Shutoff ◽  
Profile Control ◽  
Weak Gel

Be aimed at the characteristics of high temperature-salinity and severe heterogeneity of Bohai oilfield. This paper studies three different strength kinds of polymer gel profile control agents. Use storage modulus evaluates strength of polymer gel. the result indicate that the storage modulus of weak gel is between0.1 Pa and 1.0 Pa, the storage modulus of moderate gel is between1.0 Pa and 3.1 Pa, the maximal value of powerful gels storage modulus is11.9 Pa during 90 days. Core laboratory findings indicate that these different strength kinds of polymer gel have well formation sealing quality and endure washing out quality,40PV by water erosion , the formation sealing rate is up 90%.the experiment result of water shutoff and flooding oil indicate that the EOR is13.44% in heterogeneity core.

Synthesis and property evaluation of a novel polyacrylamide-montmorillonite composite for water shutoff and profile control in high salinity reservoirs

2016 ◽  
Vol 39 (2) ◽  
pp. 368-376 ◽  
Author(s):  
Tian-Hong Zhao ◽  
Ji-Yue Xing ◽  
Wan-Fen Pu ◽  
Zhi-Ming Dong ◽  
Cheng-Dong Yuan ◽  
...  
Keyword(s):  
High Salinity ◽  
Water Shutoff ◽  
Property Evaluation ◽  
Profile Control

Study on rheology and microstructure of phenolic resin cross-linked nonionic polyacrylamide (NPAM) gel for profile control and water shutoff treatments

2018 ◽  
Vol 169 ◽  
pp. 546-552 ◽  
Author(s):  
Chenglin Gu ◽  
Yahui Lv ◽  
Xiqun Fan ◽  
Changxi Zhao ◽  
Caili Dai ◽  
...  
Keyword(s):  
Phenolic Resin ◽  
Water Shutoff ◽  
Profile Control

scholarly journals Flow Physics of Profile Control Fluids in Porous Media and Implications for Enhanced Oil Recovery: A Microfluidic Study

Processes ◽  
2022 ◽  
Vol 10 (1) ◽  
pp. 112
Author(s):  
Yicheng Wang ◽  
Hanqiao Jiang ◽  
Liang Li ◽  
Lida Wang ◽  
Junjian Li
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Bottom Water ◽  
Water Channel ◽  
Flow Characteristics ◽  
High Strength ◽  
Water Reservoirs ◽  
Water Shutoff ◽  
Profile Control ◽  
Pore Body

Novel profile control agents are constantly emerging in the field of enhanced oil recovery, contributing to the extension of a stable production period. However, evaluation performed through conventional core flow experiments is usually inadequate to reveal the in-depth mechanism of profile control agents. Besides, due to different operation and production modes, there is an urgent need for a specific experimental method applicable to horizontal wells in bottom water reservoirs. In this context, this paper describes two models tailored to bottom water reservoirs and investigates the flow characteristics and mechanisms of three water-shutoff agent types. At the pore scale, further study was carried out on the water-shutoff synergism between a gel and an emulsifier. The results show that the gel is present at the edge of the pore body, while the emulsion is blocked in the center of the pore body. Hence, gel that enters a water channel (main flow and accumulation area of emulsion) can cooperate with an emulsion to achieve high-strength water shutoff, making the bottom water that re-invades mainly break through at oil-rich areas. Compared with water shutoff with gel alone (randomly distributed in the breakthrough area), the synergism improves the gel’s ability to select flow channels, inhibits emulsifier channeling, and achieves a remarkable EOR effect.

Synthesis and properties of amphiprotic polyacrylamide microspheres as water shutoff and profile control

2016 ◽  
Vol 133 (17) ◽  
pp. n/a-n/a ◽  
Author(s):  
Zhisheng Yu ◽  
Yingcheng Li ◽  
Ou Sha ◽  
Zhiqing Su ◽  
Wenle Zhou
Keyword(s):  
Water Shutoff ◽  
Profile Control
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