forest for protection against soil denudation,sand protecting plantation是什么意思

用法例句

Application of precision micro-pore compound sand control screen pipe in the sand control of Zhou 43 horizontal well;

精密微孔复合防砂筛管在周43水平井应用

Well Completion Technology of Sand Control by Means of Expandable Screen;

可膨胀筛管防砂完井技术

The development of the adjustable solidification agent of silicate composite material for sand control;

用于防砂的硅酸盐复合材料中调凝剂的研制

Development and application of a new type of sand prevention and water plugging agent;

新型防砂堵水剂的研制与应用

Aimed at the limitation of cold production methods with sand prevention and sanding in heavy oil reservoirs, the production method of cold production with limited sanding is proposed, the mechanism of this technology is introduced, and the design principle of chief parameters of production string is put forward.

针对稠油油藏防砂开采和出砂冷采存在的局限性,提出采用有限出砂冷采的开采方式开采稠油,介绍了稠油有限出砂冷采技术的原理及有限出砂冷采生产管柱主要参数的设计原则。

So,it is the most popular method of sand prevention.

高速水充填防砂技术具有工艺程序比较简单、经济可行性好、成功率高以及广泛适应性等优点 ,因此它是应用范围最广和最流行的防砂方法。

Based on experimentations, the penetrability in core with sand proof layer is good to meet the need of high production of the oil well when the porosity of sand proof reaches 39.

通过测试,岩心靶防砂填充层的孔隙度达39。

The perforation-sand proof composite technique is using the energy from perforating cartridge explosion and assiatant propellant deflagration so that it can be perforated in formation and impel sand proof material into the perforated hole to form permanent sand proof plug in several milliseconds.

复合射孔 -防砂技术是把油井的射孔和防砂两项作业结合在一起 ,利用射孔弹装药爆轰和助推药爆燃的能量 ,将在油层中射孔和把防砂材料推入射流打出孔道以形成永久性防砂塞两项作业在千分之几秒的瞬间完成 ,省略了重复起下管柱、下防砂筛管等作为 ,使完井工艺大为减化 ,同时节省作业费用 30 %～ 5 0 %。

Development and application of sand control agent of high temperature foam resin for wells of huff and puff;

稠油蒸汽吞吐井高温泡沫树脂防砂剂的研制与应用

Several modified COPNA resins are made from condensed nuclei aromatics in asphalt, and they can be used as sand control agents for high temperature oil wells.

根据 COPNA树脂的溶解性及热稳定性实验结果阐述了改性 COPNA树脂作为防砂剂的优点 ,并对以胜利 1 0 0号沥青为原料合成的改性 COPNA树脂的性能进行了试验研