| 摘要: |
| 为进一步深人井壁稳定机理研究，利用压力传递原理推导了泥页岩极低渗透率计算公式，并给出了半透膜效 率的计算公式，研制了泥页岩水化-力学耦合模拟实验装置(SHM仪)，建立了压力传递实验新方法。利用该方法定 量测定了泥页岩极低渗透率和泥页岩与水基钻井液体系半透膜效率。结果表明，具有极低渗透率的泥页岩与水基 钻井液之间存在半透膜效应，半透膜效率与无机盐的种类有关，且泥页岩渗透率和半透膜效率可通过物理-化学的方 法得以改善。 |
| 关键词: 压力传递 水化-力学耦合 渗透率 半透膜效率 实验装置 |
| DOI： |
| 分类号: |
| 基金项目: |
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| Simulation test equipment of coupled hydra-mechanics of shales |
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XU Jia-fang, QIU Zheng-song
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(College of Petroleum Engineering in China University of Petroleum，Dongying 257061，Shandong Province，China)
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| Abstract: |
| The formulas of calculating extraordinary low permeability and semipermeable membrane efficiency of shales through pressure transmissicai technique were deduced. The technique of pressure transmission test was established after developing the simulation equipment of hydra-mechanics coupling of shales. Shales' extraordinary low permeability and semipermeable membrane efficiency of shales and water based drilling fluid system were measured quantitatively. The results prove that semipermeable membrane efficiency exists between extraordinary low permeability shales and water based drilling fluids, and the semipermeable membrane efficiency relates to the kinds of inorganic salt. The shales' permeability and semipermeable membrane efficiency can be changed by physi-chemical method. |
| Key words: pressure transmission coupled hydra-mechanics permeability semipermeable membrane efficiency test equipment |
