New Method of Steam Channeling Plugging in Horizontal Wells of Heavy Oil Steam Stimulation

2016 ◽  
Author(s):  
Haiyang Yu ◽  
Liangchuan Li ◽  
Jiapeng Zheng ◽  
Wenjuan Ji ◽  
Xiaoping Qin ◽  
...  
Keyword(s):  
Heavy Oil ◽  
Horizontal Wells ◽  
New Method ◽  
Steam Stimulation

Crosswell monitoring using virtual sources and horizontal wells

Geophysics ◽  
2010 ◽  
Vol 75 (3) ◽  
pp. SA37-SA43 ◽  
Author(s):  
Joongmoo Byun ◽  
Jeongmin Yu ◽  
Soon Jee Seol
Keyword(s):  
Heavy Oil ◽  
Synthetic Data ◽  
Horizontal Wells ◽  
Time Lapse ◽  
Potential Change ◽  
New Method ◽  
Virtual Source ◽  
Vertical Wells ◽  
Monitoring Method ◽  
First Arrival

Time-lapse crosswell seismic provides an efficient way to monitor the migration of a [Formula: see text] plume or its leakage after [Formula: see text] injection into a geologic formation. Recently, crosswell seismic has become a powerful tool for monitoring underground variations, using the concept of a virtual source, with virtual sources positioned at the receivers installed in the well and thus the positions of sources and receivers can be invariant during monitoring. However, time-lapse crosswell seismic using vertical wells and virtual sources has difficulty in describing the front of a [Formula: see text] plume, which usually is parallel to the vertical wells, and in obtaining sufficient ray coverage for the first-arrival tomography. These problems arise because of the theoretical downward-illumination-directivity limitation of the virtual source. We have developed an effective monitoring method that uses virtual sources and two horizontal wells: one above and one below the [Formula: see text]sequestration reservoir. In our method, we redatum the traces that are recorded at geophones in horizontal wells from sources on the surface. The redatumed traces then become virtual traces recorded at geophones in the lower well and sent from virtual sources at the positions of the geophones in the upper well. The geometry of our method has advantages for locating the front of the [Formula: see text] plume, which is normal to the horizontal wells, compared with either real or virtual sources. The method also is advantageous in acquiring full ray coverage between the wells, and that coverage is superior to coverage acquired using vertical crosswell seismic with virtual sources. In addition, we can avoid problems related to any potential change in the medium above the reservoir and in the source and receiver positions. The results of applying our method to synthetic data that simulate [Formula: see text]-sequestration monitoring show that the front of a [Formula: see text] plume in the reservoir is depicted accurately in a velocity tomogram. The new method also can be used to monitor a reservoir during production of heavy oil.

A New Method for Designing 3D Trajectory in Sidetracking Horizontal Wells Under Multi-constraints

1999 ◽  
Author(s):  
Jiang Shengzong ◽  
Wang Xilu ◽  
Cao Limin ◽  
Liu Kunfang
Keyword(s):  
Horizontal Wells ◽  
New Method

Producing Heavy Oil by Thermal Progressive Cavity Pumps in Steam Stimulation Process

2009 ◽  
Author(s):  
Shoujun Zhang ◽  
Liguo Zhong ◽  
Fujun Song ◽  
Baoshan Lang ◽  
Fei Wu ◽  
...  
Keyword(s):  
Heavy Oil ◽  
Steam Stimulation

Industrial Application of Nickel Tallate Catalyst During Cyclic Steam Stimulation in Boca De Jaruco Reservoir

2021 ◽  
Author(s):  
Alexey V. Vakhin ◽  
Irek I. Mukhamatdinov ◽  
Firdavs A. Aliev ◽  
Dmitriy F. Feoktistov ◽  
Sergey A. Sitnov ◽  
...  
Keyword(s):  
Crude Oil ◽  
Oil Recovery ◽  
Heavy Oil ◽  
Industrial Application ◽  
Laboratory Scale ◽  
Catalyst Precursor ◽  
Hydrothermal Conditions ◽  
Cyclic Steam Stimulation ◽  
Steam Stimulation

Abstract A nickel-based catalyst precursor has been synthesized for in-situ upgrading of heavy crude oil that is capable of increasing the efficiency of steam stimulation techniques. The precursor activation occurs due to the decomposition of nickel tallate under hydrothermal conditions. The aim of this study is to analyze the efficiency of in-situ catalytic upgrading of heavy oil from laboratory scale experiments to the field-scale implementation in Boca de Jaruco reservoir. The proposed catalytic composition for in-reservoir chemical transformation of heavy oil and natural bitumen is composed of oil-soluble nickel compound and organic hydrogen donor solvent. The nickel-based catalytic composition in laboratory-scale hydrothermal conditions at 300°С and 90 bars demonstrated a high performance; the content of asphaltenes was reduced from 22% to 7 wt.%. The viscosity of crude oil was also reduced by three times. The technology for industrial-scale production of catalyst precursor was designed and the first pilot batch with a mass of 12 ton was achieved. A «Cyclic steam stimulation» technology was modified in order to deliver the catalytic composition to the pay zones of Boca de Jaruco reservoir (Cuba). The active forms of catalyst precursors are nanodispersed mixed oxides and sulfides of nickel. The pilot test of catalyst injection was carried out in bituminous carbonate formation M, in Boca de Jaruco reservoir (Cuba). The application of catalytic composition provided increase in cumulative oil production and incremental oil recovery in contrast to the previous cycle (without catalyst) is 170% up to date (the effect is in progress). After injection of catalysts, more than 200 samples from production well were analyzed in laboratory. Based on the physical and chemical properties of investigated samples and considering the excellent oil recovery coefficient it is decided to expand the industrial application of catalysts in the given reservoir. The project is scheduled on the fourth quarter of 2021.

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