Volume 34 Issue 3
May  2017
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LUO Gang, REN Kunfeng, XING Xijin, SHU Fuchang, XIANG Xingjin, GUO Qing. Study and Application of A Composite Well Completion and Stimulation Fluid for Low Porosity and Low Permeability Reservoirs[J]. DRILLING FLUID & COMPLETION FLUID, 2017, 34(3): 117-121. doi: 10.3969/j.issn.1001-5620.2017.03.023
Citation: LUO Gang, REN Kunfeng, XING Xijin, SHU Fuchang, XIANG Xingjin, GUO Qing. Study and Application of A Composite Well Completion and Stimulation Fluid for Low Porosity and Low Permeability Reservoirs[J]. DRILLING FLUID & COMPLETION FLUID, 2017, 34(3): 117-121. doi: 10.3969/j.issn.1001-5620.2017.03.023
shu

Study and Application of A Composite Well Completion and Stimulation Fluid for Low Porosity and Low Permeability Reservoirs

doi: 10.3969/j.issn.1001-5620.2017.03.023

  • 1. Hubei Hanc New-Technology Co. Ltd., Jingzhou, Hubei 434000;

  • 2. CNOOC Research Institute, Beijing 100027;

  • 3. College of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, Hubei 434000

  • Received Date: 2017-01-07
  • Publish Date: 2017-05-31
    Abstract
  • Wells drilled in the offshore low porosity low permeability M oilfield are completed with conventional completion fluidsthatlack the ability to stimulate the reservoirs. A composite well completion and stimulation fluid has recently been formulated with some optimized additives suitable for use in low porosity low permeability reservoirs, such as a clean-up additive HWDA-2, a corrosion solvent HTA-H, a corrosion inhibitor HCA101-8, and a demulsifier (with emulsification prevention ability) H409. This fluid is both a well completion fluid and a stimulation fluid. In laboratory experiments, the fluid showed percent reduction of core swelling of 96.4% and percent permeability recovery of 120%, indicating that the fluid had good inhibitive capacity and low corrosion. Application of the fluid on two wells acquired lower skin factor and higher specific productivity index compared with other wells completed with conventional latent acid completion fluids. Early-stage oil production was increased by about 30%, indicating that the fluid had good stimulation capacity.

     

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