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.

The Application of High Temperature Foam Surface Active Agent Used in Heavy Oil Thermal Recovery

2014 ◽  
Vol 672-674 ◽  
pp. 700-703 ◽  
Author(s):  
En Hong Liu
Keyword(s):  
High Temperature ◽  
Heavy Oil ◽  
Surface Active Agent ◽  
Active Agent ◽  
Steam Injection ◽  
Carbon Chain ◽  
Thermal Recovery ◽  
Alkyl Benzene Sulfonate ◽  
Profile Control ◽  
Surface Active

Heavy oil in Liaohe oilfield is buried in more than 1000 meters, and the steam injection temperature is around 350°C. Through the experiment on surfactant product, high temperature foam surface active agent was developed, which was based on high carbon chain alkyl benzene sulfonate or alkyl toluene sulfonate, and auxiliary solvent and stabilizer were added. High temperature foam surface active agent can meet the needs of steam foam profile control technology.

A New Biopolymer for High-Temperature Profile Control: Part II-Field Results

1989 ◽  
Author(s):  
K. Sampath ◽  
L.G. Jones ◽  
E.T. Strom ◽  
C.H. Phelps ◽  
C.S. Chiou
Keyword(s):  
High Temperature ◽  
Temperature Profile ◽  
Profile Control ◽  
Control Part

scholarly journals Numerical Simulation on Heat Recovery Efficiency of Different Working Fluids in High-Temperature Rock Mass

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Xu Dong ◽  
Haozhe Geng ◽  
Guan Hao ◽  
Pan Li ◽  
Yi Teng ◽  
...  
Keyword(s):  
Rock Mass ◽  
High Temperature ◽  
Heat Recovery ◽  
Injection Pressure ◽  
Recovery Process ◽  
Thermal Recovery ◽  
Heat Extraction ◽  
Recovery Efficiency ◽  
Working Fluids ◽  
Hot Dry Rock

It is of great significance for the sustainable development of global energy to develop hot dry rock (HDR) geothermal resources by using enhanced geothermal system (EGS) technology. Different working fluids in EGS have different heat recovery efficiencies. Therefore, this paper takes water and CO2 as the heat-carrying media and establishes a thermal hydraulic mechanical coupling model to simulate the heat recovery process in high-temperature rock mass. By considering the different confining pressures, rock temperature, and injection pressure, the advantages of H2O-EGS and CO2-EGS are obtained. The results show that with the increase of confining pressure, the heat recovery efficiency of water is significantly higher than that of CO2, but at higher reservoir temperature, CO2 has more advantages as a heat-carrying medium. The net heat extraction rate will increase with the increase of injection pressure, which indicates that the mass flow rate plays a leading role in the heat recovery process and increases the injection pressure of fluid which is more conducive to the thermal recovery of EGS. This study will provide a technical guidance for thermal energy exploitation of hot dry rock under different geological conditions.

Performance Evaluation for High Temperature Blocking Agent of Tannin Foam System

2012 ◽  
Vol 524-527 ◽  
pp. 1518-1525
Author(s):  
Song Yan Li ◽  
Zhao Min Li
Keyword(s):  
High Temperature ◽  
Temperature Profile ◽  
Blocking Agent ◽  
Control Agent ◽  
Interference Phenomenon ◽  
Cyclic Steam Stimulation ◽  
Profile Control ◽  
New Type ◽  
System Selection ◽  
Steam Stimulation

Cyclic steam stimulation is a kind of recover method for heavy oil. Along with steam stimulation cycles increased, steam channeling interference phenomenon will appear. To solve the problem, one of the most effective methods is high temperature profile control technology. In this paper, a new type of high temperature plugging agent of tannin foam system was researched, and the influencing factors on it were analyzed. Through foam system selection and static evaluation high temperature profile control agent of tannin foam system has been selected. The formula is: foaming agent DHG-1 for 0.5%, tannin for 7.5%, formaldehyde for 4.0%, phenol for 1.0%, CaCl2 for 1000ppm. The tannin foam system can be used in steam stimulation well.

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.

scholarly journals Development and Performance Evaluation of a High-Temperature Profile Control System

ACS Omega ◽  
2020 ◽  
Vol 5 (28) ◽  
pp. 17828-17838
Author(s):  
Chunsheng Wang ◽  
Lei Zhang ◽  
Guoshuai Ju ◽  
Qiji Sun
Keyword(s):  
Performance Evaluation ◽  
Control System ◽  
High Temperature ◽  
Temperature Profile ◽  
Profile Control ◽  
And Performance

A New Biopolymer for High-Temperature Profile Control: Part 1-Laboratory Testing

1991 ◽  
Vol 6 (03) ◽  
pp. 360-364 ◽  
Author(s):  
E. Thomas Strom ◽  
James M. Paul ◽  
Craig H. Phelps ◽  
Krishnaswamy Sampath
Keyword(s):  
High Temperature ◽  
Temperature Profile ◽  
Laboratory Testing ◽  
Profile Control ◽  
Control Part

MFR High Temperature Profile Control Agent Experimental Evaluation

2012 ◽  
Vol 602-604 ◽  
pp. 1250-1254
Author(s):  
Zhen Zhong Fan ◽  
Li Feng Zhang ◽  
Qing Wang Liu
Keyword(s):  
High Temperature ◽  
Temperature Profile ◽  
Gelation Time ◽  
Salt Resistance ◽  
Control Agent ◽  
Heating Time ◽  
The Core ◽  
Profile Control ◽  
Stable Performance ◽  
Breakthrough Pressure

MFR high temperature profile control agent consisted of 6.5% wood Fortunately sulfonic acid calcium (Ca-LS) and 6.5% crosslinker modified furfural resin (MFR),and the gel solution formed a stable performance gel in the 150~300°C.The higher the temperature, the shorter the gelation time; and the longer the heating time, the higher the gel strength. The gel is very stable at 300°C, and is well in acid and salt resistance. The core experiments showed that the blocking agent's blockage ratio is more than 99% ; the units of the breakthrough pressure was greater than 100 kPa / cm,which the gel solution is a good performance of high-temperature profile control agent.

scholarly journals Mechanical Properties of Spruce Wood Extracted from GLT Beams Loaded by Fire

2021 ◽  
Vol 13 (10) ◽  
pp. 5494
Author(s):  
Lucie Kucíková ◽  
Michal Šejnoha ◽  
Tomáš Janda ◽  
Jan Sýkora ◽  
Pavel Padevět ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Cross Section ◽  
Negative Impact ◽  
Tensile Tests ◽  
Thermal Recovery ◽  
Bending Test ◽  
Small Scale ◽  
Spruce Wood ◽  
The Impact

Heating wood to high temperature changes either temporarily or permanently its physical properties. This issue is addressed in the present contribution by examining the effect of high temperature on residual mechanical properties of spruce wood, grounding on the results of full-scale fire tests performed on GLT beams. Given these tests, a computational model was developed to provide through-thickness temperature profiles allowing for the estimation of a charring depth on the one hand and on the other hand assigning a particular temperature to each specimen used subsequently in small-scale tensile tests. The measured Young’s moduli and tensile strengths were accompanied by the results from three-point bending test carried out on two groups of beams exposed to fire of a variable duration and differing in the width of the cross-section, b=100 mm (Group 1) and b=160 mm (Group 2). As expected, increasing the fire duration and reducing the initial beam cross-section reduces the residual bending strength. A negative impact of high temperature on residual strength has also been observed from simple tensile tests, although limited to a very narrow layer adjacent to the charring front not even exceeding a typically adopted value of the zero-strength layer d0=7 mm. On the contrary, the impact on stiffness is relatively mild supporting the thermal recovery property of wood.

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