New Method for Prediction of Water Cut vs Development Time in Waterflooding Oilfield

2020 ◽  
pp. 1450-1457
Author(s):  
Hu Fan ◽  
Zu-peng Ding
Keyword(s):  
Development Time ◽  
New Method ◽  
Water Cut

A new method to constrain soil development time using both OSL and radiocarbon dating

Geoderma ◽  
2016 ◽  
Vol 261 ◽  
pp. 93-100 ◽  
Author(s):  
Xiaodong Miao ◽  
Hong Wang ◽  
Paul R. Hanson ◽  
Joseph A. Mason ◽  
Xiaodong Liu
Keyword(s):  
Radiocarbon Dating ◽  
Development Time ◽  
Soil Development ◽  
New Method

scholarly journals A New Method of Plugging the Fracture to Enhance Oil Production for Fractured Oil Reservoir using Gel Particles and the HPAM/Cr3+ System

Polymers ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 446 ◽  
Author(s):  
Lei Zhang ◽  
Nasir Khan ◽  
Chunsheng Pu
Keyword(s):  
Oil Recovery ◽  
Oil Production ◽  
Oil Reservoirs ◽  
New Method ◽  
Water Flooding ◽  
Whole Process ◽  
Gel Particles ◽  
The Matrix ◽  
Water Cut ◽  
Enhance Oil Recovery

Due to the strong heterogeneity between the fracture and the matrix in fractured oil reservoirs, injected water is mainly moved forward along the fracture, which results in poor water flooding. Therefore, it is necessary to reduce the water cut and increase oil production by using the conformance control technology. So far, gel particles and partially hydrolyzed polyacrylamide (HPAM)/Cr3+ gel are the most common applications due to their better suitability and low price. However, either of the two alone can only reduce the conductivity of the fracture to a certain extent, which leads to a poor effect. Therefore, to efficiently plug the fracture to enhance oil recovery, a combination of gel particles and the HPAM/Cr3+ system is used by laboratory tests according to their respective advantages. The first step is that the gel particles can compactly and uniformly cover the entire fracture and then the fracture channel is transformed into the gel particles media. This process can enhance the oil recovery to 18.5%. The second step is that a suitable HPAM/Cr3+ system based on the permeability of the gel particles media is injected in the fractured core. Thus, the fracture can be completely plugged and the oil in the matrix of the fractured core can be displaced by water flooding. This process can enhance oil recovery to 10.5%. During the whole process, the oil recovery is increased to 29% by this method. The results show that this principle can provide a new method for the sustainable and efficient development of fractured oil reservoirs.

New Prospect Model for Liquid Loading in Gas Well Base on Energy Balance Theory

2014 ◽  
Vol 711 ◽  
pp. 117-120
Author(s):  
Xu Zhang ◽  
Wei Hua Liu ◽  
Tao Zhang
Keyword(s):  
Real Time ◽  
New Method ◽  
Gas Wells ◽  
Liquid Loading ◽  
Gas Well ◽  
Gas Recovery ◽  
Flow Situation ◽  
Actual Flow ◽  
Normal Production ◽  
Water Cut

Accurate and timely recognizing whether gas wells get effusion is one of the important guarantee to ensure the normal production of water-cut gas well. It often gets errors when using current normal recognizing methods of the critical carrying fluid flow model to predict and recognize the actual flow situation in these wellbores, which already have effusion or have been drained effusion by taking measures. This paper is based on the coordinating relation between the energy of gas well itself and the energy required for draining effusion out, establishing a new method to recognize gas well effusion, and establishing a relatively complete system of gas well effusion identification. Combined with field production data, this method can be more accurately used to recognize gas effusion and real-time trace, and it can avoid the above problems. Combined with the instance of gas well for real-time effusion diagnosis, the predicted result is very good agreement with actual situation. This new method has important guiding significance for the normal production of water producing gas wells and the implementation of related gas recovery with water draining.

scholarly journals A New EOR Technology: Gas Alternating Gas Injection

2019 ◽  
Vol 8 (1) ◽  
pp. 27-32
Author(s):  
Mohammed Alsharif Samba ◽  
Ibrahim Aldokali ◽  
Mahmoud Omran Elsharaf
Keyword(s):  
Sensitivity Analysis ◽  
Equation Of State ◽  
Oil Recovery ◽  
Computer Modelling ◽  
Gas Injection ◽  
New Method ◽  
Economic Method ◽  
Compositional Simulator ◽  
Water Cut ◽  
Gas Segregation

A new method of enhanced oil recovery has been developed and applied to a simulation using some of data from the fifth SPE paper " template from CMG ". The simulator was used in this paper is GEM in the Computer Modelling Group (CMG) advanced equation-of-state (EOS) compositional simulator. The new method is called Gas alternating gas injection(GAG). The Gas Alternating Gas process is a cyclic method of injecting alternating cycles of gas followed by gas and repeating. Sensitivity analysis showed this method can give a much better recovery factor for GAG compared with single continues gas injection. GAG benefits that will give low water cut and high oil recovery due to gas segregation between two gases and that will prevent heavier gas to go the top layers. This work indicate that the GAG injection is an economic method compared with continues injection. Especially when we use GAG (Air + CO2).  

Comparison of Acrylamide and Agar Gels by Freeze-Etching

1977 ◽  
Vol 35 ◽  
pp. 606-607
Author(s):  
Russell L. Steere ◽  
Eric F. Erbe
Keyword(s):  
Electron Microscope ◽  
Sodium Hydroxide ◽  
Sodium Hypochlorite ◽  
Chromic Acid ◽  
Distilled Water ◽  
Thin Sheets ◽  
Acid Cleaning ◽  
Agar Gels ◽  
Freeze Etching ◽  
Water Cut

Thin sheets of acrylamide and agar gels of different concentrations were prepared and washed in distilled water, cut into pieces of appropriate size to fit into complementary freeze-etch specimen holders (1) and rapidly frozen. Freeze-etching was accomplished in a modified Denton DFE-2 freeze-etch unit on a DV-503 vacuum evaporator.* All samples were etched for 10 min. at -98°C then re-cooled to -150°C for deposition of Pt-C shadow- and C replica-films. Acrylamide gels were dissolved in Chlorox (5.251 sodium hypochlorite) containing 101 sodium hydroxide, whereas agar gels dissolved rapidly in the commonly used chromic acid cleaning solutions. Replicas were picked up on grids with thin Foimvar support films and stereo electron micrographs were obtained with a JEM-100 B electron microscope equipped with a 60° goniometer stage.Characteristic differences between gels of different concentrations (Figs. 1 and 2) were sufficiently pronounced to convince us that the structures observed are real and not the result of freezing artifacts.

Selective Sampling and Orientation of Non-Homogeneous Tissues

1968 ◽  
Vol 26 ◽  
pp. 98-99
Author(s):  
C. C. Clawson ◽  
L. W. Anderson ◽  
R. A. Good
Keyword(s):  
Electron Microscopy ◽  
Electron Microscope ◽  
Light Microscopy ◽  
Random Sampling ◽  
New Method ◽  
Microscope Examination ◽  
Small Areas ◽  
Selective Sampling ◽  
Large Numbers ◽  
Specific Orientation

Investigations which require electron microscope examination of a few specific areas of non-homogeneous tissues make random sampling of small blocks an inefficient and unrewarding procedure. Therefore, several investigators have devised methods which allow obtaining sample blocks for electron microscopy from region of tissue previously identified by light microscopy of present here techniques which make possible: 1) sampling tissue for electron microscopy from selected areas previously identified by light microscopy of relatively large pieces of tissue; 2) dehydration and embedding large numbers of individually identified blocks while keeping each one separate; 3) a new method of maintaining specific orientation of blocks during embedding; 4) special light microscopic staining or fluorescent procedures and electron microscopy on immediately adjacent small areas of tissue.

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