Successful Installation of Horizontal Openhole Gravel-Pack Completions in Low Fracture Gradient Environment: A Case History from Deepwater West Africa

Jeanpert, Julie; Banning, T..; Abad, Carlos; Mbamalu, I..; Hardy, J. R.

doi:10.2118/189492-ms

Cited by 8 publications

(3 citation statements)

References 8 publications

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“…If the apparent velocity is lower than this, the α wave packing process will stop and reverse packing will begin. At this time, an effective means is to reduce the sand ratio appropriately [13].…”

Section: Determination Methods Of Packing Length In α Wave Packing Stagementioning

confidence: 99%

“…The β wave reverse packing starts at plugging location and the length from the heel of wellbore to plugging location is α wave packing length. There are many factors influencing the length of α wave packing [12][13][14][15][16], including pump rate, sand ratio, carrier fluid leakoff, washpipe/screen ratio, carrier fluid viscosity, fluid density and gravel density. For gravel packing of long horizontal wells in deepwater, the successful completion of α wave packing is an important first step.…”

Section: Determination Methods Of Packing Length In α Wave Packing Stagementioning

confidence: 99%

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The Gravel Packing Length Determination Method and Influencing Factors Analysis in Deepwater Horizontal Wells

Huang¹,

Wen²,

Xing³

et al. 2022

Geofluids

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Horizontal well gravel packing is the most commonly used sand control technology in offshore oil and gas fields. For extreme conditions such as deepwater, low fracture pressure formations, and long horizontal well bore length, targeted and cost-effective measures are required. According to the friction models in different stages of gravel packing process of horizontal well, the corresponding friction is calculated and compared. According to the calculation, during the entire packing process, the washpipe/screen annular friction is the largest in β wave packing stage, which reflects that higher packing pressure is required in this stage, and the formation fracture pressure is easily broken at this stage. According to the equilibrium flow velocity, the calculation method and flow chart of α -wave sand bed height were put forward. The criterion and calculation method of packing length were designed. The influencing factors of viscosity, density and leakage rate of carrier fluid on α-wave packing length were discussed. The quantitative analysis was carried out. The design and calculation method of α-β wave packing length considering the successful completion of α wave packing and the successful completion of β wave reverse packing was put forward. The corresponding software was compiled to discuss and calculate the quantitative analysis of the factors affecting the α-β wave packing length, such as the density of carrier fluid, gravel density and washpipe/screen ratio. For specific conditions, certain criteria and methods can be used to design and optimize horizontal well gravel packing length.

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Section: Determination Methods Of Packing Length In α Wave Packing Stagementioning

confidence: 99%

Section: Determination Methods Of Packing Length In α Wave Packing Stagementioning

confidence: 99%

The Gravel Packing Length Determination Method and Influencing Factors Analysis in Deepwater Horizontal Wells

Huang¹,

Wen²,

Xing³

et al. 2022

Geofluids

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“…Although, openhole gravel packing is now viewed as a means of enhancing the reliability, efficiency, and longevity of horizontal sand control completions, [1][2][3][4][5][6] there are still considerable risks in horizontal well gravel packing, especially in extreme cases such as long horizontal well and unconsolidated sandstone reservoir. [7][8][9] It is mainly manifested as premature bridging in the openhole/screen annulus before the gravel packing reaches the toe of the horizontal well, resulting in the failure of the operation.…”

Section: Introductionmentioning

confidence: 99%

Simulation and application analysis of gravel packing in deepwater HT/HP wells

Yu¹,

Jiang²,

Wang³

et al. 2022

Energy Science & Engineering

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Gravel packing is one of the main sand control methods for deep-water hightemperature and high-pressure (HT/HP) reservoirs. According to the specific characteristics of deep-water HT/HP and multichannel, considering the influence of slurry flowing through long-distance multichannel and the slurry temperature alternation along the flow path, based on α-β wave packing theory, a coupling model of gravel packing in deep-water HT/HP horizontal wells is established. The packing simulation algorithm and calculation process are designed to realize the gravel packing temperature pressure simulation and multistage refined friction calculation of deep-water HT/HP horizontal wells. The influence of each packing parameter on the packing process is fully studied. Furthermore, the application simulation of the A10H well of the South China Sea deepwater HP well is carried out. The simulation results show that in the slurry injection stage and α wave packing stage, the packing pressure is low and the residual pressure window is large. In the β wave packing stage, the packing pressure increases rapidly, the residual pressure window shrinks rapidly, and finally, at the end of β wave packing, the residual pressure window becomes narrow. The viscosity of carrier fluid has a significant impact on the pressure window of packing operation. For the design pump rate of 5.6 bpm, the packing cannot be completed with 5.0 cp viscosity carrier fluid. For the carrier fluid with high viscosity, the multi-β wave packing technique of pump reduction control pressure at the end of the β wave packing stage is used, and this process is simulated in this paper.Considering three constraints: not sand packed in the drilling string, without premature bridging in the α wave packing stage, and α and β wave packing pressure control conditions, the safe range of pump rate is determined under different operation safety margin conditions, which can provide technical support for on-site operation.

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Friction calculation and packing effect analysis for gravel packing in deepwater horizontal wells

Wen¹,

Huang²,

Zhou

et al. 2021

Energy Science & Engineering

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The South China Sea is one of the four major oil and gas accumulations in the world, 70% of which are located in deepwater areas. Deepwater is not only a frontier field challenging today's oil and gas exploration and development technology but also a strategic field in which China is gradually increasing investment. Effective completion is crucial for the safe production of deepwater resources through horizontal wells. Conversely, sand production has been proven to be the main geotechnical problem that restricts safe and efficient production from deepwater

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Successful Installation of Horizontal Openhole Gravel-Pack Completions in Low Fracture Gradient Environment: A Case History from Deepwater West Africa

Cited by 8 publications

References 8 publications

The Gravel Packing Length Determination Method and Influencing Factors Analysis in Deepwater Horizontal Wells

The Gravel Packing Length Determination Method and Influencing Factors Analysis in Deepwater Horizontal Wells

Simulation and application analysis of gravel packing in deepwater HT/HP wells

Friction calculation and packing effect analysis for gravel packing in deepwater horizontal wells

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