沙子管理/控制

等离子喷涂涂层可抵抗绕丝筛网的侵蚀

本文的作者描述了一种专为增强标准绕线屏幕的耐腐蚀性而设计的涂层,该涂层由等离子喷涂的陶瓷或硬金属组成。

腐蚀前后涂层和未涂层​​屏幕样品(系列 2)的比较。
图 1——腐蚀前后涂层和未涂层​​屏幕样品(系列 2)的比较。
资料来源:IPTC 21158。

新开发的涂层被涂在标准绕丝筛的外侧(即面向地层),以使槽具有抗侵蚀性。该涂层由陶瓷或硬质金属组成,并通过等离子喷涂形成。进行了广泛的开发和验证计划,以保证规定的槽宽、耐腐蚀性以及涂层和筛网的机械强度。该涂层提高了抗侵蚀性,可以承受腐蚀井环境,并且具有适合安全安装在任何井中的机械性能。

热喷涂和涂层的组成

屏幕采用热喷涂涂层。

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Sand management/control

Plasma-Sprayed Coatings Resist Erosion in Wire-Wrapped Screens

The authors of this paper describe a coating designed for enhanced erosion resistance for standard wire-wrapped screens that consists of ceramic or hard metal applied by plasma spraying.

Comparison of coated and uncoated screen samples (Series 2) before and after erosion.
Fig. 1—Comparison of coated and uncoated screen samples (Series 2) before and after erosion.
Source: IPTC 21158.

A newly developed coating is put on the outside (i.e., facing the formation) of standard wire-wrapped screens to make the slots erosion-resistant. The coating consists of ceramic or hard metal and is applied by plasma spraying. An extensive development and verification program was conducted to guarantee defined slot widths, corrosion resistance, and mechanical strength of coating and screen. The coating improves resistance against erosion, can withstand corrosive well environments, and features mechanical properties suitable to be safely installed in any well.

Thermal Spraying and Composition of Coatings

The screens are coated using thermal spraying.

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