Special Oil & Gas Reservoirs >

2022 , Vol. 29 >Issue 1: 154 - 159

DOI: https://doi.org/10.3969/j.issn.1006-6535.2022.01.023

Drilling & Production Engineering

Study and Application of Temporary Plugging Agent for Turnaround Fracturing in Deep Well

  • Li Wei ,
  • Xiao Yang ,
  • Chen Mingxin ,
  • Liu Huifeng ,
  • Fan Wentong ,
  • Huang Longzang ,
  • Peng Fen ,
  • Cao Kexue
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  • 1. PetroChina Tarim Oilfield Company, Korla, Xinjiang 841000, China;
    2. Chengdu University of Technology, Chengdu, Sichuan 610059, China;
    3. Energy New Technologies International, Xi′an, Shaanxi 710000, China

Received date: 2021-03-05

  Revised date: 2021-11-22

  Online published: 2023-01-10

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Abstract

Turnaround fracturing can widen the swept scope of hydraulic fractures and the contact area between crude oil and fractures, and it is an effective method to develop low-porosity and low-permeability reservoirs. To address the problems of low plugging pressure of turnaround fracturing and less study on temporary plugging agent suitable for turnaround fracturing of deep wells, the formulation of temporary plugging agent was optimized by laboratory experiment, the fracturing effect of the formulation was analyzed by numerical simulation, and the simulation results were compared with the field microseismic monitoring data. The results showed that no plugging was effective by using temporary plugging particles alone, and the optimized compound temporary plugging agent formulation was 0.8% fiber plus 0.5% temporary plugging particles, with the maximum pressure for borehole plugging of 8.7 MPa; the lateral swept width of the optimized turnaround fracturing system was very similar to the microseismic monitoring results, which clearly demonstrates the effectiveness of the compound temporary plugging agent. There is much for reference of the study results for improving the turnaround fracturing effect of deep wells.

Key words： turnaround fracturing; temporary plugging agent; deep well; low porosity and low permeability; microseismic; numerical simulation

Cite this article

Li Wei , Xiao Yang , Chen Mingxin , Liu Huifeng , Fan Wentong , Huang Longzang , Peng Fen , Cao Kexue . Study and Application of Temporary Plugging Agent for Turnaround Fracturing in Deep Well[J]. Special Oil & Gas Reservoirs, 2022 , 29(1) : 154 -159 . DOI: 10.3969/j.issn.1006-6535.2022.01.023

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