人工举升

纤维增强热塑性抽油杆提高人工举升效率

本文探讨了纤维增强热塑性抽油杆的开发,作为克服钢抽油杆和热固性玻璃纤维抽油杆的局限性的有希望的替代方案。

完整的FRTP抽油杆。
图1——完整的FRTP抽油杆。
来源:IPTC 23949。

整篇论文重点介绍了纤维增强热塑性 (FRTP) 抽油杆的开发,重点介绍了它们在抽油杆(一般而言)方面的潜在优势和挑战,以及为从电潜泵 (ESP) 抽油或气举到可靠的深层高速率抽油杆的早期过渡提供便利。与热固性复合材料杆相比,FRTP 复合材料杆的一个独特之处在于其具有非常高的抗剪切破坏性。高抗剪切破坏性意味着杆具有压缩载荷耐受性,并且整个抽油杆串可以由 FRTP 抽油杆组成。

介绍

钢制抽油杆相对较重。广泛的井专用设计需要将抽油杆柱逐渐变细,以优化抽油杆柱的整体重量,满足强度和疲劳要求,并考虑杆和流体的加速和减速、摩擦效应以及地面抽油机或装置的结构或功率限制等动态载荷。

钢材面临腐蚀风险。

图片尺寸 1280X1280
以 SPE 会员身份继续阅读
SPE 会员:请在页面顶部登录以访问此会员专属内容。如果您不是会员,但您认为 JPT 内容很有价值,我们鼓励您加入 SPE 会员社区以获得完全访问权限。
原文链接/JPT
Artificial lift

Fiber-Reinforced Thermoplastic Sucker Rods Provide Artificial Lift Efficiencies

This paper explores the development of fiber-reinforced thermoplastic sucker rods as a promising alternative for overcoming the limitations of steel sucker rods and thermoset fiberglass sucker rods.

Complete FRTP sucker rod.
Fig. 1—Complete FRTP sucker rod.
Source: IPTC 23949.

The complete paper focuses on the development of fiber-reinforced thermoplastic (FRTP) sucker rods, highlighting their potential advantages and challenges, for rod pumping (in general) and for offering an earlier transition from electrical submersible pump (ESP) pumping or gas lifting to reliable deep high-rate rod pumping. A unique feature of an FRTP composite rod is its remarkably high shear failure resistance compared with that of a thermoset composite rod. A high shear-failure resistance means the rods have compressional loading tolerance and that an entire sucker rod string could be comprised of FRTP sucker rods.

Introduction

Sucker rods made from steel are relatively heavy. Extensive well-specific designs require tapering of rod strings to optimize the overall sucker rod string weight relative to the strength and fatigue requirements and consideration of the dynamic loadings from accelerations and decelerations of the rods and fluids, frictional effects, and structural or power limitations of the pump jack or unit at surface.

Steels suffer from corrosion risks.

×
SPE_logo_CMYK_trans_sm.png
Continue Reading with SPE Membership
SPE Members: Please sign in at the top of the page for access to this member-exclusive content. If you are not a member and you find JPT content valuable, we encourage you to become a part of the SPE member community to gain full access.