In order to solve the problem whether to keep the hole and block the leakage or protect the permeability of the formation,we propose the use of such polymers as Na-CMC,guar gam and konjaku flour to develop the temporarily blocked drilling fluid combined with the chain scission and degradation mechanics in modern biology.
针对钻井工程中出现的护壁堵漏与保护地层渗透性的矛盾,提出了利用羧甲基纤维素钠、胍尔胶、魔芋等聚合物,并结合现代生物技术中聚合物的断链降解原理,开发出适合于石油、天然气、地下水等钻井领域的自动降解无伤害钻井液——暂堵型钻井液,与传统的暂堵剂不同,它在钻进完成后不需要采用解堵工艺,如压力解堵、酸化解堵、油溶解堵、破胶等,从根本上改进了解堵工艺;分析了暂堵型钻井液的基本原理和两种典型聚合物的酶降解原理,并介绍了室内的粘度实验、渗透性恢复测试实验和在甘肃张掖和广西柳州的现场试验;理论和实践均证明,暂堵型钻井液能自动降解,对产层无伤害,在进行有效护壁堵漏的同时,还能在可控制的时间内显著地恢复地层的渗透性,因此具有推广价值。
To solving this problem, we use polymers such as guar gam, konjaku flour and Na-CMC, combining with the chain scission and degradation in modern biology, and develop temporarily blocked drilling fluid, which is marking as self-degradated, harmless to the formation and can be widely used in oil, gas and water well drilling.
针对钻井工程中出现的护壁堵漏与保护地层渗透性的矛盾，提出利用胍尔胶、魔芋、和Na-CMC等聚合物，并结合现代生物技术中聚合物的断链降解原理，开发出适合于石油、天然气和水文水井钻探等领域的自动降解无伤害钻井液——暂堵型钻井液。
Advances in overseas technology of formation damage control——Investigations on the mechanisms andmethods of temporary plugging;
国外保护油气层技术新进展——关于暂堵机理和方法的研究
Applying the theory that the injected gel easily forms the temporary plugging on the injection side, we developed the temporary plugging agent that gelling time and gel time could be controlled, and the.
利用凝胶体系在低渗层表面形成快速堵塞的原理,采用一种成胶和破胶时间均可控的暂堵凝胶体系,与后续注入的堵剂体系配套使用,岩芯流动实验表明,这种方法可以使绝大部分堵液进入高渗层,从而大大减少对非目的层的伤害。
Water locking and stress sensitivity of carbonate reservoir were evaluated and used to remove blockage of temporary plugging reservoir successfully,so the key point is how to remove the temporary plugging successfully.
所以对裂缝性油藏暂堵并不是关键 ,关键是成功的封堵之后成功的解堵。
Fluid loss should be controlled with Drispac R and Drispac SL as required.
按要求用高粘或低粘锥斯派克控制失水。
andropogon: Grass used for erosion control.
须芒草:用于控制水土流失的一种草。
It is a huge job to control Yellow River erosion.
控制黄河水土流失是一项巨大工程。
STUDY ON PHYTIC ACID IN THE CONTROL OF FRUIT V_C LOSSES BEATING
植酸对控制水果打浆中V_C损失的研究
To make(a boat, for example)heavy and unwieldy by flooding with water.
进水失控由于大量进水而使（如轮船）沉重和难以控制
Mrs Jones didn't give way during the floot, but she was very frightened.
洪水来时琼斯太太虽然害怕，但没有失去控制。
A Perceptual Distortion Model for Adaptive Video-watermarking
用于自适应视频水印的感知失真控制模型
Impact of Different Agronomic Measures on Control of Nitrogen,Phosphorus,Soil and Water Loss on Sloping Land
不同农艺措施对坡耕地水土及氮磷流失的控制
NONLINEAR ROBUST VARIABLE PITCH CONTROL OF THE STALL HORIZONTAL WIND POWER GENERATOR SYSTEM
水平轴失速型风力发电机组非线性鲁棒控制
In New Orleans, when flood controls failed, so did law and order.
在新奥尔良，当洪水失去控制的时候，法律和命令也失去了约束。
Purpose Control the damaged Condition of oil and water well casing, Decrease the loss of water drive storge.
目的:控制油水井套管损坏程度,减小水驱储量的损失。
Loss rate of soil water and leaf water is controlled under drought.
在干旱胁迫下,可有效地抑制土壤水分的损失速率,使烟叶的水分损失得到控制.
Review of research on instability failure mechanism and stability control of tunnel surrounding rock in water-bearing sandy ground
含水砂层隧道围岩失稳破坏机制及控制研究现状综述
Fluid loss will be controlled below5 ml in the81/2 inch interval.
在81/英寸井眼的钻井液失水要控制在5毫升以下。
2.10 Fluid loss will be controlled below 5 ml in the 8 1/2 inch interval.
在8 1/2英寸井眼的钻井液失水要控制在5毫升以下。
The function of stomata in plants is controlling gas exchange and modulating water balance.
气孔是植物控制气体交换和调节水分散失的门户。
It encouraged landowners to plant belts of trees to slow the force of the wind and stop erosion.
它鼓励土地拥有者建造林带以降低风力和控制水土流失。
Eurasian grass grown in United States great plains area for forage and erosion control.
生长于美国大平原地区的欧亚草种，用作饲料或控制水土流失。