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- For the cores with different permeability, its water plugging rate was higher than 85% ,oil plugging rate was lower than 20% , and-selectivity was good. 对不同渗透率的岩芯,堵水剂的堵水率大于85%25,堵油率小于20%25,具有良好的选择性。
- water plugging rate 堵水率
- Water plugging is one of the most effective measures of controlling water cut rising, improving water flooding, increasing production rate of recovery. 油井堵水是控制油井含水上升、改善水驱效果、提高储量采出程度的最有效措施之一。
- The results of plugging test showed that water shutoff agent HY had good plugging efficiency for different permeability core,plugging rate was more than 99.90%,and the core break- through pressure grade was higher than 18.0 MPa. 聚合物堵水剂HY的封堵试验结果表明;堵水剂HY对不同渗透率的岩芯均具有很好的封堵效果;封堵率大于99.;90%25;突破压力梯度大于18
- Core flow experiment showed that plugging rate of lost circulation material was over 97% . 人造岩芯封堵实验表明,该堵漏剂封堵率达97%25以上;
- Practice and understanding for water plugging of Renqiu buried hill reservoir in high water cut period. 任丘潜山油藏高含水期的堵水实践与认识
- The techniques used in the past, such as cementing and water plugging are not satisfied with present requirements. 鉴于此,研制出油井封堵注水泥一次不留管柱堵水工具,并形成了水泥堵水新工艺。
- During water plugging operation, the key factor of success is how to protect non-target zones from pollution. 在堵水封窜作业中,如何保护非目的层不受污染,是施工成功与否的关键。
- The main problems consisting in water plugging are that oil intervals alternated with water intervals in a zone. 现有的堵水封隔器不能满足层内、薄夹层堵水,主要表现在不仅无法封堵连续射孔段炮眼;
- Separate implementation of sand control,water plugging and injectivity profile control had brought formation damage. 稠油油藏在开发过程中常遇到出砂、出水的问题,开采时分别进行防砂、堵水、调剖3种措施给地层带来了伤害。
- MDP 952 agent for profile control and water plugging is a mixture consisted of xylolite flour, hardening agent and some chemicals. MDP-952调堵剂是由菱苦土粉与硬化剂及一些化学助剂组成的混合物。
- Its optimum composition was HPAM 1 500 - 2 000 mg/L,XE - 1 800 - 1 000 mg/L,and the stabilizer 300 mg/L. The selectivity , bore core plugging rate, and migration characteristic of CDG were avaluated in laboratory. 确定了CDG深部调驱剂体系最佳配方: HPAM浓度为1 500-2 000 mg/L,有机铬交联剂XE-1浓度为800-1 000 mg/L,稳定剂浓度为 300 mg/L。
- Abstract This paper introduces the structure,principle and field testing situation of the pipe string recently deve loped for chemical water plugging. 介绍了一种新近研制成功的化学堵水管柱的结构、原理、现场试验情况;
- It also presents that the development of the profile control and water plugging a-gents should focus on low cost, multifunction and high efficiency. 提出了堵水调剖剂应向着低投入、多功能、高效率的方向发展。
- A kind of non-selective water plugging agent have been used in temporary blocking workover in 4 wells,and some better results have been obtained. 使用非选择性堵水剂作为暂堵剂,在4口井上进行了暂堵修井作业,取得了较好的效果;
- The plugging fluid has been used in over 20 wells, the plugging rate was 100%, and 80% of the wells were successfully plugged in only one operation. 现场使用20余口井证明,该堵剂的封堵率达100%25,并且在封堵作业中一次成功率在80%25以上。
- The preparation of profile control agent having swellable particles from oily sludge for water plugging and profile control was a new measure of sludge treatment and utilization. 利用含油污泥制备膨体颗粒调剖剂用于调剖堵水是一种新的污泥资源化技术,研究了含油污泥的预处理方法,尤其是除油技术。
- Model ZC string-supporting centralizer is developed in order to extend the service life of the releasing water plugging string and the water injection string. 为了延长丢手堵水和斜井注水等管柱的工作寿命,研究了一种ZC型堵水注水管柱支撑扶正器。
- After the formula and operation technologies of superfine cement plugging are improved, it can greatly improve the effectiveness of water plugging in Henan oilfield. 超细水泥封堵技术是封堵油水井高渗透层段,减少产水量或无效注水,提高注入水驱油效率的有效措施之一。
- The incorporate technology can settle sand control, water plugging and injectivity profile control in one time and reduce formation damage and operating cost. 一次性实现防砂、堵水、调剖的工艺技术,可节约费用,减少对地层的伤害。