Sand Production Management While Increasing Oil Production of a Gravel Packed Well Equipped with RCP Autonomous Inflow Control Devices in a Thin Heavy Oil Reservoir in Offshore China

2020 ◽  
Author(s):  
Shuquan Xiong ◽  
Fan Li ◽  
Congda Wei ◽  
Donghong Luo ◽  
Mojtaba Moradi
Keyword(s):  
Heavy Oil ◽  
Production Management ◽  
Oil Production ◽  
Oil Reservoir ◽  
Sand Production ◽  
Control Devices ◽  
Heavy Oil Reservoir

Improvements of Superheated Steam Stimulation in Secondary Development of Heavy Oil Reservoir

2012 ◽  
Vol 524-527 ◽  
pp. 1450-1455
Author(s):  
An Zhu Xu ◽  
Xiang Hong Wu ◽  
Zi Fei Fan ◽  
Lun Zhao ◽  
Cheng Gang Wang
Keyword(s):  
Heavy Oil ◽  
Superheated Steam ◽  
Oil Production ◽  
Saturated Steam ◽  
Oil Reservoir ◽  
Displacement Efficiency ◽  
Oil Displacement ◽  
Oil Displacement Efficiency ◽  
Heavy Oil Reservoir ◽  
Steam Stimulation

With superheated steam, there is no direct relationship between temperature and pressure, Therefore, at a particular pressure it is possible for superheated steam to exist at a wide range of temperatures higher than that of its saturated steam. The heat transfer coefficient is 1/150-1/250 as much as that of saturated steam during heat transferring, and it takes a relatively long time to cool, during which time the steam is releasing very little energy and transmitted long distances. The mechanisms of superheated steam stimulation are mainly pointed to the performance of crude oil viscosity reduced, flow environment improved, rock wettability changed, oil displacement efficiency improved. Physical simulation shows that oil displacement efficiency by superheated steam is 6-12% higher than that of saturated steam at the same temperature, and under the condition of carrying the same heat, superheated steam enlarged the heating radius by about 10m, oil steam ratio increased by 0.7. Superheated steam stimulation was put into Kazakstan’s heavy oil reservoir after two cycles of saturated steam stimulation. The average daily oil production was 2-4 times that of saturated steam stimulation, which improved heavy oil production effectively. The secondary heavy oil thermal recovery by superheated steam stimulation applied in marginal heavy oil reservoirs achieved satisfactory effect.

scholarly journals Prediction of Conformance Control Performance for Cyclic-Steam-Stimulated Horizontal Well Using the XGBoost: A Case Study in the Chunfeng Heavy Oil Reservoir

Energies ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 8161
Author(s):  
Zehao Xie ◽  
Qihong Feng ◽  
Jiyuan Zhang ◽  
Xiaoxuan Shao ◽  
Xianmin Zhang ◽  
...  
Keyword(s):  
Numerical Simulations ◽  
Heavy Oil ◽  
Oil Production ◽  
Horizontal Wells ◽  
Training Data ◽  
Gradient Boosting ◽  
Oil Reservoir ◽  
Conformance Control ◽  
Extreme Gradient Boosting ◽  
Heavy Oil Reservoir

Conformance control is an effective method to enhance heavy oil recovery for cyclic-steam-stimulated horizontal wells. The numerical simulation technique is frequently used prior to field applications to evaluate the incremental oil production with conformance control in order to ensure cost-efficiency. However, conventional numerical simulations require the use of specific thermal numerical simulators that are usually expensive and computationally inefficient. This paper proposed the use of the extreme gradient boosting (XGBoost) trees to estimate the incremental oil production of conformance control with N2-foam and gel for cyclic-steam-stimulated horizontal wells. A database consisting of 1000 data points was constructed using numerical simulations based on the geological and fluid properties of the heavy oil reservoir in the Chunfeng Oilfield, which was then used for training and validating the XGBoost model. Results show that the XGBoost model is capable of estimating the incremental oil production with relatively high accuracy. The mean absolute errors (MAEs), mean relative errors (MRE) and correlation coefficients are 12.37/80.89 t, 0.09%/0.059% and 0.99/0.98 for the training/validation sets, respectively. The validity of the prediction model was further confirmed by comparison with numerical simulations for six real production wells in the Chunfeng Oilfield. The permutation indices (PI) based on the XGBoost model indicate that net to gross ratio (NTG) and the cumulative injection of the plugging agent exerts the most significant effects on the enhanced oil production. The proposed method can be easily transferred to other heavy oil reservoirs, provided efficient training data are available.

Autonomous Inflow Control Devices (AICD) Application in Horizontal Wells Completions in Rubiales Area, Heavy Oil Reservoir

2015 ◽  
Author(s):  
M. B. Gomez Gualdron ◽  
A. Florez Anaya ◽  
Y. E. Araujo ◽  
W. Parra ◽  
M. Uzcategui ◽  
...  
Keyword(s):  
Heavy Oil ◽  
Horizontal Wells ◽  
Oil Reservoir ◽  
Control Devices ◽  
Heavy Oil Reservoir

Analytical and Numerical Models Assist in Water Production Management in a Heavy Oil Reservoir in Northern Kuwait

2018 ◽  
Author(s):  
Asrar Ajaimi Al-Shammari ◽  
Arun Kharghoria ◽  
Jose Gregorio Garcia ◽  
Pabitra Saikia ◽  
Abdulrahman Fares Al-Shammari ◽  
...  
Keyword(s):  
Heavy Oil ◽  
Production Management ◽  
Numerical Models ◽  
Oil Reservoir ◽  
Water Production ◽  
Heavy Oil Reservoir

Study of Development of Medium-Deep Heavy Oil Reservoir Pilot Tests in Henan Oilfield

2013 ◽  
Vol 734-737 ◽  
pp. 1268-1271
Author(s):  
Dong Jin Xu ◽  
Rui Quan Liao ◽  
Fan Zhang ◽  
Jie Liu ◽  
Heng Zheng
Keyword(s):  
Heavy Oil ◽  
Steam Injection ◽  
Thermal Recovery ◽  
Oil Reservoir ◽  
Great Success ◽  
Pump Efficiency ◽  
Pilot Test ◽  
Sand Production ◽  
Sand Control ◽  
Heavy Oil Reservoir

Henan Oilfield Xiaermen Qianbei block is the medium-deep heavy oil reservoir. Due to the high viscosity of crude oil, formation cementation loose, sand production and reservoir water-sensitive, the pre-trial is less effective. The problem is the inefficiency of steam injection, poor oil-steam ratio, sand production serious, the poor pump efficiency and the abnormal productions. It is important to improve the mobility of heavy oil in the formation and wellbore for the development. According to the reservoir characteristics and the experience of the primary development, the measures which include the high-pressure gravel packing sand control, insulated tubing of steam injection, anti-swelling agent reservoir protection, formation and wellbore viscosity reducer and rod sucker-rod pumping system are carried out in a pilot test of the four wells. After the pilot test, the oil-steam ratio increases from 0.08 to 0.55, the average daily oil production increases from 0.5 tons to 8.0 tons. The pilot test has achieved great success and promoted the application in medium-deep heavy oil thermal recovery in the entire block, simultaneously provided the basis for the efficient development of other similar blocks.

Autonomous Inflow Control Devices (AICD) Application in Horizontal Wells Completions in Rubiales Area, Heavy Oil Reservoir

2015 ◽  
Author(s):  
M. B. Gómez Gualdrón ◽  
A. Florez Anaya ◽  
Y. E. Araujo ◽  
W. Parra ◽  
M. Uzcategui ◽  
...  
Keyword(s):  
Heavy Oil ◽  
Horizontal Wells ◽  
Oil Reservoir ◽  
Control Devices ◽  
Heavy Oil Reservoir

Nitrogen Foam Anti-Edge Water-Incursion Technology for Heavy Oil Reservoir with Edge Water

2013 ◽  
Vol 827 ◽  
pp. 66-71 ◽  
Author(s):  
Jie Xiang Wang ◽  
Teng Fei Wang ◽  
ZeXia Fan
Keyword(s):  
Heavy Oil ◽  
Field Tests ◽  
Oil Production ◽  
Oil Reservoir ◽  
Steam Flooding ◽  
Nitrogen Foam ◽  
Single Well ◽  
Heavy Oil Reservoir ◽  
Water Cut ◽  
Steam Stimulation

The steam stimulation is a main method to develop the heavy oil reservoir. However, the huff-puff wells will be water-flooded quickly if the reservoir has edge water, and the oil production level will decrease sharply. An experimental device, which can simulate edge water and steam stimulation process, was designed according to the feature of Henan heavy oil reservoir with edge water on the basis of steam flooding device, and the effect factors and application conditions of nitrogen foam anti-edge water-incursion technology were researched. The results show that the anti-edge water-incursion technology is suitable for the heavy oil reservoir with a medium energy edge water, and a better foam plugging will be got if the technology is applied at the time of serious water-flooded. The optimum injection pattern of the technology is a N2 slug first, followed by a nitrogen foam slug, and then the steam slug. Field tests were proceeded on the basis of experiment results and field experience, the operation success rate is 100%, the average drainage period reduces by 0.7d, the average cycle water cut reduces by 23%, the average cycle oil production increases by 2 times, and the average single-well oil-steam ratio increases by 0.25. So the technology can reduce water cut and increase oil production significantly, and the target of edge water inhibition is achieved.

Successful Cold Heavy Oil Production with Sand (CHOPS) Application in Massive Heavy Oil Reservoir in Sudan: A Case Study

2011 ◽  
Author(s):  
Ruifeng Wang ◽  
Xintao Yuan ◽  
Xueqing Tang ◽  
Xianghong Wu ◽  
Xinzheng Zhang ◽  
...  
Keyword(s):  
Heavy Oil ◽  
Oil Production ◽  
Oil Reservoir ◽  
Heavy Oil Reservoir
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