Author:
Li Long,Yin Da,Hao Weiwei
Abstract
Abstract
A new type of responsive controllable solidification plugging agent (RCSP) for long open hole intervals was developed, and the sealing characteristics were evaluated. RCSP had the characteristics of rapid water loss, high filter-cake consistency and good residence capacity. The experimental results indicated that the maximum pressure-bearing capacities of plugged zones in 5 mm and 10 mm slotted templets are 16.6 MPa and 11 MPa, respectively. So RCSP is an effective plugging agent for strengthening wellbore stability. RCSP is appropriate for sealing wide range of fracture sizes. Using RCSP-based plugging mud to address lost circulation problems in troublesome thief zones is a very powerful and economical approach. In the future, RCSP might hold great promise to resolve lost circulation problems in multiple leakage zones in long open hole sections.
Subject
General Physics and Astronomy
Reference17 articles.
1. Smart lost circulation materials for productive zones;Mansour;Soc. Pet. Eng.,2017
2. Novel spherical polymer sealing agent for oil-based drilling fluids to overcome borehole instability problem in low permeability reservoirs;Li;Key Eng. Mater.,2020
3. Vital role of nanomaterials in drilling fluid and reservoir protection applications;Li;Soc. Pet. Eng.,2012
4. Novel acid soluble consolidating material to overcome lost circulation problems in reservoir intervals;Feng;IOP Conf. Ser. Mater. Sci. Eng.,2019
5. Application of nanomaterials in reservoir protection;Li;Appl. Mech. Mater.,2012