洗井液

水基洗井液的应用和实验室研究结果表明，渗入到地层中的洗井液滤液及其固相颗粒是使地层储集性能变差的主要原因。

Water-base washing fluid 's application and laboratory research results indicate that washing fluid filtrate to seep into formation and its solid phase particles are the main reason to make reservoir performance worse .

文中阐述了水型、搀入各种药品的洗井液添加剂及地层压力对储层的影响，提出了改善储层性能的方法。

This paper expounds the influence of water type , washing fluid mixed with additives and formation pressure to reservoir , and gives the method to improve reservoir performance .

PVA无固相洗井液的试验与探讨

PVA Non - solid Flushing Fluid : Its Preparation and Test

MX泡沫洗井液的研制

Foaming well washing liquid mx : development and usage

BSF型注水井洗井液处理装置

Treatment Equipment for Washing Well Liquid of Water Flooding Well with BSF Model

高效洗井液体系GX-1研究与应用

High efficiency GX 1 series of well flushing fluids : researches and uses

从储层保护出发，提供两种新型工作液&压井液（YL）与洗井液（XL）配方。

In order to protect reservoir , the formulations of two new po working fluid-killing fluid ( YL ) and flushing fluid ( XL ) are supplied .

在调研国内外泡沫理论相关文献的基础上，跟踪和吸收了国内外关于泡沫理论的最新研究成果，根据试验系统地研制了ZX-1泡沫洗井液体系。

Based on the relative theory study of foam both here and abroad and large amount of tests in lab , we develop ZX-1 , a new set of foam cleaning fluid system .

针对稠油注汽热采井中，压井液、洗井液进入地层使井下温度降低，造成转抽后开井困难；

To solve the problem of well fluid overflow in heavy oil thermal recovery wells , a novel downhole switch valve is developed .

编制了一套泡沫流体模拟计算程序，形成了一套能在低压气井作业中建立起循环的泡沫冲砂洗井液设计计算方法，为正确进行冲砂设计提供了计算手段。

The simulation program about foam fluid was workouted , it is convenient to calculate the cycle foam sand washing for a design .

针对地层压力低，热洗清蜡时洗井液大量进入地层，严重污染油层问题，研制了热洗清蜡油层保护器。

In view of flushing fluid enter and contaminate formation during heat-washing paraffin in low pressure well , developed reservoir protector by heat-washing paraffin .

该技术可有效地防止井壁坍塌，明显降低洗井液用量，减少滤失，且对地层伤害小。

This technique can effectively prevent borehole collapse , reduce the volume of flush fluid , lessen filtration , and create less damage to formation .

钻头喷咀距井底岩石面的距离关系到洗井液射流能量能否被充分利用。

The utilization of jet energy of drilling fluid has been proved to be dependent on the distance between the bit nozzle and bottom hole rock surface .

通过实践发现：（1）洗井液中的表面活性剂可以提高金刚石钻进的机械钻速。

It has been found from experimental results that the surface active agent in the flushing fluid may be used to increase the rate of diamond drilling .

现场实验表明：增粘降滤压井液和泡沫冲砂洗井液适合川东低压气井修井作业；

It is shown from the field experiment that the invented killing fluid and foam sand-washing fluid are adapt to well workover in the Chuangdong gas field ;

在稠油开发和油田管理中，为了保持地层的高渗透率，必须对完井液、洗井液和修井液进行细级过滤。

To keep high permeability formations during development of viscous oil and servicing of well , a fine filtering process for completion fluids , slushing fluids and workover fluids must be made .

在油气田开发过程中，洗井液、压井液、完井液易进入地层，使储油气层受到污染和损害。

In development process of oil-gas field , flushing fluid , well killing fluid and completion fluid invaded strata , will pollute and injure formation , and reduce effective permeability of the formation .

在芯管上套有密封皮碗，隔断了洗井液与油层的接触，避免了洗井液侵入油层、压油层的弊端；

The core pipe is sleeved with a seal cap , blocking the contact of a washing liquid and an oil layer , preventing the washing liquid from invading the oil layer and an oil pressing layer .

快速洗井增液器的研制及应用

Development and application of speedy well washing device

最后根据胜利油田和大港油田的9口大斜度井以及水平井的资料，进行统计分析，给出了能获得良好携带岩屑效果的各洗井区钻井液流变参数的合理范围。

Through statistical analysis on data of nine highly deviated wells and horizontal wells in Shengli and Dagang Oil Fields , a reasonable range of drilling fluid rheological parameters is shown out .

冲砂洗井作业要求循环液与地层流体相配伍，并加杀菌剂；

The flushing and washing task need the match of circulation fluid and formation fluid , plus germicide ;

洗井时，能关闭采油层，防止洗井液漏入油层，此时整个油井仍相通，可实现油井的彻底清洗。

In well washing , the reservoir can be closed to prevent the washing liquid from entering the reservoir and to carry out a thorough well washing .