175MPa压裂车泵阀箱技术改造及应用

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中图分类号：TE934.2 文献标志码：B doi：10.3969/j.issn.1001-3482.2026.01.009

文章编号：1001-3482（2026）01-0068-07

Abstract：To mee the demand 175 MPa fracturing truck pump valve boxes in China's 10，0O-meter deep wels during acid fracturing operations，a systematic modification was permed based on the BaoJi Oilfield Machinery 's25Oo fracturing truck.Thisinvolved topology optimization of the flow channel morphology，adoption ofa novel 434OM alloy to enhance material strengthand toughness，and implementation of a step -sealing assembly utilizing polytetrafluoroethylene （PTFE） composite materials with a dynamic compensation structure. The modified pump valve box successfully completed over fracturing operations of over30 layers in five wels，sustaining a maximum operating pressure exceeding 15O MPa. Itachieved the test pressure of 262.5 MPa with no visible leakage.The results demonstrate that the modified pump valve box meets the permance requirements 175 MPa fracturing operations. The successul modification and on-site verification of the 175 MPa pump valve box have provided a technical path enhancing the reliability of ultra-high pressure fracturing equipment，offering technical support acid fracturing operations in 10.000- meterdeep wells，and promoting the sustainable development of ultra-high pressure fracturing equipment.

Key words：fracturing truck; pump valve box; material optimization; sealing structure

油气资源勘探开发逐渐向深层、超深层推进，大排量高泵压储层改造作业也实现常态化，2022年我国页岩气开发中 150MPa 以上高压作业占比达 61% ，是2018年的3.2倍[1-5]。（剩余9294字）