Engao Tang

Study and Field Trial of Discontinuous Chemical Flooding for Mature Offshore Oilfield with Ultra High Water Cut

Jian Zhang, Engao Tang, Yi Jin, Yigang Liu et autres

Abstract Large portion of offshore oilfield in China are mature oilfields with ultra high water cut and recovery rate. The fragmentary distributed remaining oil and aged downhole equipment bring great challenges to the sustainable oil production. A new chemical flooding technique called …

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Infill Well Placement Optimization for Polymer Flooding in Offshore Oil Reservoirs Using an Improved Archimedes Opti-Mization Algorithm with Halton Sequence

Engao Tang, Jian Zhang, Anlong Xia, Yi Jin et autres

Infill drilling is one of the most effective methods to improve the performance of poly-mer flooding. The difficulties related to infill drilling are determining the optimal numbers and placements of infill wells. In this study, an improved archimedes optimization algorithm with Halton …

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Development of Novel Star-Like Branched-Chain Acrylamide (AM)-Sodium Styrene Sulfonate (SSS) Copolymers for Heavy Oil Emulsion Viscosity Reduction and Its Potential Application in Enhanced Oil Recovery

Chunhua Zhao, Jian Zhang, Jianrong Lv, Bo Huang et autres

High Resolution Image Download MS PowerPoint Slide Injecting water with chemicals to generate emulsions in the reservoir is a promising method for enhancing heavy oil recovery because oil-in-water (O/W) emulsions significantly reduce oil viscosity. To enhance heavy oil recovery efficiency, we developed …

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Discontinuous Chemical Flooding: An Effective Approach to Achieve Sustainable Oil Production for Mature Reservoir

Jian Zhang, Yi Jin, Engao Tang, Fanghao Yu et autres

Abstract The offshore oilfields in China have entered the mature stage with high water cut and recovery rate. Oilfield Q has an oil viscosity of only 5 cp, with a water cut of 95% and a recovery rate of more than 40%. …

Functional microorganisms involved in the sulfur and nitrogen metabolism in production water from a high-temperature offshore petroleum reservoir

Lei Zhou, Dawei Wang, Shi-Lun Zhang, Engao Tang et autres

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Microbial community composition and diversity in production water of a high-temperature offshore oil reservoir assessed by DNA- and RNA-based analyses

Lei Zhou, Yu-Wei Lu, Dawei Wang, Shi-Lun Zhang et autres

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Synthesis and characterization of modified xanthan gum using poly(maleic anhydride/1-octadecene)

Xiaojin Wang, Haipeng Xin, Yuejun Zhu, Wenjuan Chen et autres

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