地质勘探应用膨胀管时膨胀力问题的研究

Experimental Study on Expansion Force of Expandable Tubular Used in Geological Exploration

摘要:

膨胀管技术是近年来钻井工程领域出现的一项新兴的技术，该技术可以把常规套管固井导致的缩径问题降到最低限度。它既能极大地降低建井成本，又具有很好的环保效果。膨胀管技术在地质勘探中的深孔护壁方面具有很好的前景。在理论计算公式的基础上进行膨胀力实验，根据实验结果和理论计算结果对比，选择合适的计算膨胀力的理论公式；根据实验数据对膨胀管在地质勘探上的可行性进行分析；利用润滑措施来降低膨胀过程中的摩擦力达到降低膨胀力的目的，并且对润滑措施的效果进行了理论分析。

Abstract:

Expandable tubular technology presents a new and unique challenge to the drilling industry, which can solve the problem of diameter shrinkage in well cementation and reduce the construction cost with good environmental protection effect and good future prospect in geological exploration. Experiments of expansion force were made based on the theoretical formula. By the comparison between experimental data and theoretical results, reasonable theoretical formula was chosen; the feasibility of expandable tubular using in geological exploration was analyzed; the expansion friction was reduced by lubrication measures to lower the expansion force and the lubrication effect were analyzed in theory.