查询词典 valve casing

In the light of low pump efficiency resulted in the effect of gas in the middle and later period of the development ofoil fields in China, a casing pressure lelif valve is ricveloped.

针对我国油田开发中后期抽油泵采油中由于气体影响使泵效降低的问题，研制出一种套管定压放气阀。

Unbalanced state was kept at the bottom of the well by downhole casing shut-off valve in whole process unbalanced drilling operation, the oil reservoir was protected by unbalanced drilling and non-snubbing service.

在全过程欠平衡钻井作业过程中，通过井下套管阀开关，保证井底始终处于欠平衡状态，成功地进行了欠平衡钻进、不压井起下钻等作业，有效地保护了储层。

Underbalanced drilling ; horizontal well ; low density drilling fluid ; rotary geosteering ; casing valve ; PDC bit ; multilateral well ; EM-MWD ; water-in-oil drilling fluid

欠平衡；水平井；钻井液；套管阀； PDC钻头；分支井；电磁波随钻地质导向

5 Degree of valve opening and closing valves open and close the display plate ① degree of scale line should be cast in the gearbox cover or change the direction of the display after the disc casing, all for the ground wire brush on the phosphor scale to show striking;② direct needle plate material in the case of better management of available stainless steel, or steel plate for the painting, do not make use of aluminum skin;③ direct drive needle eye-catching, stable fixation, accurate adjustment when opening and closing after Rivets should be locked.

4.5 阀门启闭程度的显示盘①阀门启闭程度的刻度线，应铸造在变速箱盖上或转换方向后的显示盘的外壳上，一律面向地面，刻度线刷上荧光粉，以示醒目；②指示盘针的材质在管理较好的情况下可用不锈钢板，否则氧气专用阀、铜阀门为刷漆的钢板，切勿使用铝皮制作；③指示盘针醒目，固定牢靠，一旦启闭调节准确后，应以铆钉锁定。

Valves open and close the display of the degree plate① valve opening and closing degree of the scale line should be cast in the gearbox cover or change the direction of the Globe Valves display after the disc casing, all for the ground wire brush on the phosphor scale to show striking;② direct drive pin, the material in the case can be better managed stainless steel, or steel plate for the painting, do not use aluminum leather production;③ instruction set pin striking, stable fixation, once the opening and closing After accurate adjustment should be locked rivets.

阀门启闭程度的显示盘①阀门启闭程度的刻度线，应铸造在变速箱盖上或转换方向后的显示盘的外壳上，一律面向地面，刻度线刷上荧光粉，以示醒目；②指示盘针的材质在管理较好的情况下可用不锈钢板，否则为刷漆的钢板，切勿使用铝皮制作；③指示盘针醒目，固定牢靠，一旦启闭调节准确后，应以铆钉锁定。

It is also known as one of the most poisonous naturally occurring substances.

它也被称为一个最自然发生的有毒物质。

The greatest stress is found at the location on the cross section where V is the largest.

最大应力出现在横截面上V为最大的地方。