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Borehole inclination effects to the wellbore stability and sand production

机译:井眼倾斜对井眼稳定性和出砂的影响

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摘要

The paper presents the result of a laboratory study of the wellbore stability and sand particles produced from unstable perforated wellbore. Section of a perforated wellbore were generated and exposed to various loads and conclusions were drawn with respect to the failure load and sand particles produced during the loading process. The result shows that the perforated wellbore may fail during the creation process and sand particles were produced, depending on the borehole inclination angle, phasing angle and perforation pattern. The sand particles produced were found by sieve analysis to be oversized 500 micron. Generally, stable perforated wellbore produced less sand particles, therefore minimizing the rig problem i.e. deformation of formation and sand production.
机译:本文介绍了对不稳定孔眼的井眼稳定性和产生的沙粒进行实验室研究的结果。产生了一个有孔的井眼截面,并承受了各种载荷,并得出了关于破坏载荷和在加载过程中产生的沙粒的结论。结果表明,根据井眼倾角,相位角和射孔方式的不同,射孔井眼在形成过程中可能会破裂并产生砂粒。通过筛分分析发现产生的沙粒超大了500微米。通常,稳定的带孔井眼产生较少的砂粒,因此使钻机问题(即地层变形和产砂)最小化。

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