Abstract
The oil-well cementing float equipment is used in controlling the speed to infuse the cement to the well and avoiding the cement to flow backward in the process of oilfield well-cementing. If the cementing float equipment is failure the quality of oil-well cementing will be reduced and it can even causing accident. It is important to detecting the capacity of high-temperature and high-pressure (HTHP) for the cementing float equipment so as to improve the quality of oil-well cementing in our country. A kind of testing equipment that to detect performance of the HTHP was established referring to the American API standard in this paper. It can simulate the environment of where HTHP condition and long time continuous work. The HTHP workspace furnace system and cooling system etc. were included in this system.
First, the HTHP workspace was designed in this paper. The HP vessel in workspace works in the environment of high-temperature and high-pressure and it is important to calculate its intension. In order to design reliable, the couple analysis of heat-stress was done to the cementing float equipment body using the finite element method so as to check whether the maximum stress to meet the design requirements. Additionally, the structure of the top cover of workspace and its components were designed in this paper too.
Secondly, the cooling system of discharging and oiling system were designed on the basis of determining the type of heat transfer. It was checked to the heat-transfer areas through calculated the dimensions were determined by it and the noting oil circuit system was designed.
At last, the experiment was done after the furnace system has been designed. The furnace system design includes determining the type of heating furnace and calculating the dimensions of chamber of the furnace and the installed power. The heating and pressing process was set up to measure the temperature. The test was done by using the HTHP equipment and the regulations of this system were given according to the test.
It is not only to test the quality of the float products increase efficiency for business raise the price of float products expand the domestic market, but also to make the products enter into the international market directly. It can conducive to make products export as well as to push the oil industry development and improve the position of our country in international society.
工作舱设计参数确定
（1）工作舱工作基本要求
① 舱内有效工作内径为400mm，因工件最大外径为360mm，工作舱有效工作长度为1000mm；
② 舱内的工作压力为35MPa，工作温度为230℃；
③ 工作舱工作的环境温度为0～40℃；
④ 被测试件联结结构简单、拆装方便；
⑤ 在正常的工作条件下，釜体不发生塑性变形，密封可靠不泄露，安全使用总时间即工作舱寿命要大于（等于）2000小时
（2）设计压力
容器的设计必须考虑最高工作压力和最高工作温度可能同时出现的最苛刻条件的组合。设计压力取略高于或等于最高工作压力。
