First Attempt of Injection-Production Integrated Technology for Steam Stimulation in Bohai Bay, China

2021 ◽  
Author(s):  
Jianhua Bai ◽  
Fahao Yu ◽  
Zhaoping Jiang ◽  
Yue Li ◽  
Baobing Shang ◽  
...  
Keyword(s):  
Technological Process ◽  
New Technology ◽  
Oil Production ◽  
Steam Injection ◽  
Thermal Recovery ◽  
Bohai Bay ◽  
Recovery Effect ◽  
Integrated Technology ◽  
Process System ◽  
Steam Stimulation

Abstract There is abundant heavy oil resource in Bohai Oilfield and steam stimulation has proven an effective method through several field pilots. Till now, all steam stimulation is conducted by two-trips string for steam injection and oil production individually. That is, when the process of steam injection, soaking and blowout is finished, an oil production string will replace the downhole string through workover operation. According to statistics, the operating charge in one huff-and-puff cycle is more than 2.5 million Yuan. Besides, workover operation takes more than 26 days and results in about 1000 m3 kill fluid leak, which greatly reduce the thermal recovery effect. Considering the drawbacks of two-trips string technology, a new injection-production integrated technology by jet pump, namely single-trip string realizing steam injection and oil production, is developed, which includes downhole string system and surface technological process system. The downhole string provides passages for steam injection and oil production. The temperature and pressure resistance of string system could reach as high as 350°C and 35MPa, respectively, which can adapt to the high temperature environment during steam injecting. The surface technological process system can separate 279m3/d producing fluid and supercharge the power fluid as high as 25MPa, which meet the needs of thermal well production. The new technology tested in X well. More than 6000 m3 steam with 356°C temperature and 16MPa pressure was injected. The downhole string system and Christmas tree withstood the HTHP test and kept in good condition. During oil production, the surface technological process ran run steadily. The pressure of plunger pump was up to 20MPa and more than 120m3 produced fluids were separated by the separator. Compared with two-trips string technology, the new technology saved 2 million Yuan and 21 operating days. Besides, no kill fluid leaked, which improves thermal recovery effect. This is the first time that injection-production integrated technology for steam stimulation is developed and put into field trial. The favorable application result indicates that this technology will promote the high-efficient exploitation of heavy oil in Bohai Bay.

scholarly journals A new direction of increasing the efficiency of oil production from bitumen

2019 ◽  
pp. 100-107
Author(s):  
В. S. Tsidaev ◽  
V. I. Golik ◽  
A. V. Mayer
Keyword(s):  
New Technology ◽  
Oil Production ◽  
Production Costs ◽  
Oil Fields ◽  
Expert Assessment ◽  
Human Society ◽  
Integrated Technology ◽  
Leaching Methods ◽  
Oil Production Technology ◽  
Extraction Of Metals

Oil production and use have become a priority element in ensuring the existence of human society and one of the main areas of research. Despite the abundance of publications on this topic, there is a gap in the development. Available publications don't contain information about the possibility of obtaining associated goods, which could reduce production costs. The aim of the study is to fill the gap by searching for technology that provides the opportunity to obtain associated marketable products in the form of metals.  The research methodology used to achieve the goal combines the methods of systematizing and analyzing the available data on oil production technology and metal leaching technology with an integrated technology assessment at the expert assessment level.  The results of the study include a proposal for the extraction of metals from oil-bearing rocks by leaching methods. The essence and mechanism of a fundamentally new technology for mining reserves of oil fields by leaching metals from ores during the integration of underground processes of oil pyrolysis and leaching of metals from oil-bearing rocks, combining the possibilities of mine-borehole development and physicochemical leaching processes, are described. The advantages of the new technology are formulated. The obtained results provide an answer to the objectives of the study and indicate the achievement of the goal.  

First-Ever Vessel-Based Large-Scale Propped Fracturing Treatment in a Tight, Deep, Hot Formation in Bohai Bay Yields Multiple Fold Oil Production Increase

2008 ◽  
Author(s):  
Khay Kok Lee ◽  
Binhai Zhang ◽  
Jianming Deng ◽  
Xiaocheng Zhang ◽  
Meng Seng Tan ◽  
...  
Keyword(s):  
Large Scale ◽  
Oil Production ◽  
Bohai Bay ◽  
Production Increase

In-Situ Steam Generation A New Technology Application for Heavy Oil Production

2016 ◽  
Author(s):  
Ayman R. Al-Nakhli ◽  
Luai A. Sukkar ◽  
James Arukhe ◽  
Abddulrahman Mulhem ◽  
Abdelaziz Mohannad ◽  
...  
Keyword(s):  
Heavy Oil ◽  
New Technology ◽  
Oil Production ◽  
Steam Generation ◽  
Technology Application

Numerical Simulation of Thermal Solvent Replacing Steam under Steam Assisted Gravity Drainage SAGD Process

2010 ◽  
Author(s):  
Weiqiang Li ◽  
Daulat D. Mamora
Keyword(s):  
High Temperature ◽  
Oil Recovery ◽  
Oil Sands ◽  
Steam Injection ◽  
Thermal Recovery ◽  
Production Performance ◽  
Gravity Drainage ◽  
Steam Assisted Gravity Drainage ◽  
Recovery Technique ◽  
Simulation Results

Abstract Steam Assisted Gravity Drainage (SAGD) is one successful thermal recovery technique applied in the Athabasca oil sands in Canada to produce the very viscous bitumen. Water for SAGD is limited in supply and expensive to treat and to generate steam. Consequently, we conducted a study into injecting high-temperature solvent instead of steam to recover Athabasca oil. In this study, hexane (C6) coinjection at condensing condition is simulated using CMG STARS to analyze the drainage mechanism inside the vapor-solvent chamber. The production performance is compared with an equivalent steam injection case based on the same Athabasca reservoir condition. Simulation results show that C6 is vaporized and transported into the vapor-solvent chamber. At the condensing condition, high temperature C6 reduces the viscosity of the bitumen more efficiently than steam and can displace out all the original oil. The oil production rate with C6 injection is about 1.5 to 2 times that of steam injection with oil recovery factor of about 100% oil initially-in-place. Most of the injected C6 can be recycled from the reservoir and from the produced oil, thus significantly reduce the solvent cost. Results of our study indicate that high-temperature solvent injection appears feasible although further technical and economic evaluation of the process is required.

scholarly journals A steam rising model of steam-assisted gravity drainage production for heavy oil reservoirs

2019 ◽  
Vol 38 (4) ◽  
pp. 801-818
Author(s):  
Ren-Shi Nie ◽  
Yi-Min Wang ◽  
Yi-Li Kang ◽  
Yong-Lu Jia
Keyword(s):  
Production Rate ◽  
Horizontal Well ◽  
Oil Production ◽  
Steam Injection ◽  
Injection Rate ◽  
Gravity Drainage ◽  
Model Parameters ◽  
Steam Quality ◽  
Steam Chamber ◽  
Steam Assisted Gravity Drainage

The steam chamber rising process is an essential feature of steam-assisted gravity drainage. The development of a steam chamber and its production capabilities have been the focus of various studies. In this paper, a new analytical model is proposed that mimics the steam chamber development and predicts the oil production rate during the steam chamber rising stage. The steam chamber was assumed to have a circular geometry relative to a plane. The model includes determining the relation between the steam chamber development and the production capability. The daily oil production, steam oil ratio, and rising height of the steam chamber curves influenced by different model parameters were drawn. In addition, the curve sensitivities to different model parameters were thoroughly considered. The findings are as follows: The daily oil production increases with the steam injection rate, the steam quality, and the degree of utilization of a horizontal well. In addition, the steam oil ratio decreases with the steam quality and the degree of utilization of a horizontal well. Finally, the rising height of the steam chamber increases with the steam injection rate and steam quality, but decreases with the horizontal well length. The steam chamber rising rate, the location of the steam chamber interface, the rising time, and the daily oil production at a certain steam injection rate were also predicted. An example application showed that the proposed model is able to predict the oil production rate and describe the steam chamber development during the steam chamber rising stage.

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