Experimental study on horizontal-well multi-thermal fluid stimulation process in offshore heavy oil reservoirs

Liu, Yigang; Zou, Jian; Meng, Xianghai; Zhou, Fei; Líu, Hao; Wang, Qiuxia; Zhang, Qi; Fan, Jun

doi:10.1007/s13202-020-00877-6

Cited by 11 publications

(9 citation statements)

References 28 publications

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“…Thermal flooding is the alternative technology after thermal huff and puff drawing on the experiences of onshore oilfields practices [8][9][10]. Thermal flooding is carried out on multi-wells.…”

Section: Technology Requirementsmentioning

confidence: 99%

Simulation of Multi-component Thermal Fluid Flooding in Horizontal Well of Offshore Heavy Oil Reservoirs

Lin,

Li,

Song

et al. 2023

J. Phys.: Conf. Ser.

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After many-turns of huff and puff of multi-component thermal fluid, only the heavy oil in a limited area near the wellbore is produced. However, the inter-well areas, namely the dead oil areas, are not influenced by multi-component thermal fluid. Therefore, it is necessary to carry out the research on multi-component thermal fluid flooding. The facility of thermal recovery 3D physical stimulation is adopted to carry out simulation of flooding in various well spacing of pseudo-line well pattern, and producer-injector spacing and parameters are optimized with numerical simulation. The results of physical simulation and numerical simulation results show that the effect of the 250m spacing of well pattern with injectior-productor ratio 1:3 is better than other well spacing, with maximum recovery of 56.02%. The research results provide a technical support for the offshore multi-component thermal fluid flooding experiment.

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Section: Technology Requirementsmentioning

confidence: 99%

Simulation of Multi-component Thermal Fluid Flooding in Horizontal Well of Offshore Heavy Oil Reservoirs

Lin,

Li,

Song

et al. 2023

J. Phys.: Conf. Ser.

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“…Based on statistical research, some scholars put forward various expressions of the water flooding characteristic curve. It reflects the particularity of oilfield production performance (Cunyou et al 2011, Liu 2020, Recham 2000. Because of this particularity, some different expressions may be proposed in future.…”

Section: Prefacementioning

confidence: 99%

Derivation of water flooding characteristic curve for offshore low-amplitude structural reservoir with strong bottom water

Liu

Tan

Cai

et al. 2021

J Petrol Explor Prod Technol

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The water flooding characteristic curve method is one of the essential techniques to predict recoverable reserves. However, the recoverable reserves indicated by the existing water flooding characteristic curves of low-amplitude reservoirs with strong bottom water increase gradually, and the current local recovery degree of some areas has exceeded the predicted recovery rate. The applicability of the existing water flooding characteristic curves in low-amplitude reservoirs with strong bottom water is lacking, which affects the accurate prediction of development performance. By analyzing the derivation process of the conventional water flooding characteristic curve method, this manuscript finds out the reasons for the poor applicability of the existing water flooding characteristic curve in low-amplitude reservoir with strong bottom water and corrects the existing water flooding characteristic curve according to the actual situation of the oilfield and obtains the improvement method of water flooding characteristic curve in low-amplitude reservoir with strong bottom water. After correction, the correlation coefficient between $$\frac{{k_{ro} }}{{k_{rw} }}$$ k ro k rw and $$S_{w}$$ S w is 95.92%. According to the comparison between the actual data and the calculated data, in 2021/3, the actual water cut is 97.29%, the water cut predicted by the formula is 97.27%, the actual cumulative oil production is 31.19 × 104t, and the predicted cumulative oil production is 31.31 × 104t. The predicted value is consistent with the actual value. It provides a more reliable method for predicting low-amplitude reservoirs' recoverable ability with strong bottom water and guides the oilfield's subsequent decision-making.

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“…Heavy oil with the viscosity of less than 300 MPa·s can be effectively developed by water flooding, chemical flooding, well pattern thickening, and so on. 4,5 While for heavy oil with viscosity greater than 350 MPa·s, steam injection shows its unique advantages and high recovery. 6,7…”

Section: Introductionmentioning

confidence: 99%

“…Heavy oil with the viscosity of less than 300 MPaÁs can be effectively developed by water flooding, chemical flooding, well pattern thickening, and so on. 4,5 While for heavy oil with viscosity greater than 350 MPaÁs, steam injection shows its unique advantages and high recovery. 6,7 Affected by the size limit of the offshore platform, the offshore mechanical oil extraction mostly uses submersible electric pumps as the main lifting equipment.…”

Section: Introductionmentioning

confidence: 99%

Research on mechanical characteristics and safety of working platform in rod pumping process

Dehua

Liu

et al. 2022

Advances in Mechanical Engineering

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Rod pumping on offshore platform provides a solution to low efficient extraction of offshore heavy oil and the safety of working platform is the prerequisite for the implementation of this new technology. In this paper, a coupling dynamics model of rod pumping system and the jacket platform is established, and the dynamic characteristics of the pumping unit excitation, rod pumping system, and jacket platform is studied. Based on the analysis of the multi-body dynamics model, the three frequencies (pumping unit excitation, rod pumping system, jacket platform) are far apart, so the dynamic effect of rod pumping on the platform can be analyzed according to static load. Based on the limit working state and the cumulative damage theory of the structure, the safety evaluation standard for the increased load of the jacket platform is established. Under the extreme marine environment once in 50 years, the safety factor of the main structure of the platform is greater than 4, and the overall safety factor is 3% lower than that before the rod pumping operation. Offshore rod pumping has less influence on the jacket platform from analysis, and which lays a theoretical and safety foundation for offshore oil pumping.

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Experimental study on horizontal-well multi-thermal fluid stimulation process in offshore heavy oil reservoirs

Cited by 11 publications

References 28 publications

Simulation of Multi-component Thermal Fluid Flooding in Horizontal Well of Offshore Heavy Oil Reservoirs

Simulation of Multi-component Thermal Fluid Flooding in Horizontal Well of Offshore Heavy Oil Reservoirs

Derivation of water flooding characteristic curve for offshore low-amplitude structural reservoir with strong bottom water

Research on mechanical characteristics and safety of working platform in rod pumping process

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