气井

Based on the drilling operation of 4 Wells, this article describes the basic characteristic of coalbed methane and technical difficulties in drilling. Some technical keys as borehole quality, fresh Water drilling,fresh water coring, coal-bed methane protection are solved through application of a series of techno1ogical measures such as optimization of rock bit, optimization of drill stem, optimization of drilling parameters and string coring and etc. The experimental performance, especially in fine-grained ...

本文以四口井的施工为例，着重介绍了煤层气井的特点，并指出了钻煤层气井的几个技术难点，通过钻头优选，钻具优选，钻井参数优选，绳索式取心技术等的现场实施和应用，基本解决了井身质量，清水钻井，清水绳索取心，煤层气保护等几个方面的技术难题，文中还介绍了使用中原油田自行设计的中原9508绳索取心工具的取心情况，尤其是在粉煤层地区的取心情况，这将为今后的煤层气开发打下坚实的基础。

Productivity equation of natural gas well is established.

建立气井产能方程，初步确定火山岩气藏气井产量和无阻流量差异较大，气藏模型类型复杂多样，储层平面分布范围有限，多数压裂井附近存在不流动边界，因此，单井合理配产和控制边底水采出是高效开发徐深气田的重要手段。

The parameters are :① reservoir effective thickness;② reservoir porosity;③ reservoir volume efficiency;④ fair pay ′ s reservoir volume efficiency;⑤ distance to the fault;⑥ reciprocal of the square root of the distance to the fault ）;⑦ apparent fold strength coefficient;⑧ maximum principal curvature of structural plane;⑨ transversal section line curvature;and ⑩ longitudinal section line curvature.

摘 要 介绍了气井产能的确定方法及地质参数的选择与计算方法：采用初始二项式无阻流量、稳定产量及初始采气指数作为气井产能评价的指标；10项参数分别是①储层有效厚度；②储层孔隙度；③储容系数；④好储层的储容系数；⑤与断层的距离；⑥与断层距离开方的倒数；⑦视褶皱强度系数；⑧构造面最大主曲率；⑨横向剖面线曲率；⑩纵向剖面线曲率。

In gas field development,the productivity of gas well occupies a decisive place and takes an important effect,being one of the bases of the gas field development plan design and rational gas well proration.

在气田开发中，气井的产能具有举足轻重的地位和作用，它是气田开发方案设计、气井合理配产的依据之一。

Using the small diameter velocity string to accomplish the primary completion or the recompletion has much benefit for increasing the flowing velocity, preventing liquid loading, improving the breakthrough recovery, enhancing the lifting capacity, and insuring normal production of gas well.

通过安装小直径CT管柱实施一次完井或在现有生产油管内安装CT速度管柱实施二次完井，有利于增加生产流速、预防井底积液、提高气井无水采收率、增强积液井排液能力及确保气井正常生产。

Advanced ultrasonic flowmeter of overseas is adopt, technical flow of gas well is predigested. At the same time, syphon flowmeter is applied for the first time in the measure of gas well and spot experimental work of syphon flowmeter is accomplished.

采用了目前国外先进的超声波流量计，简化采气井工艺流程，同时首次将弯管流量计应用到了采气井计量中并完成了弯管流量计的现场试验工作。

The application of this method in data processing for the abnormally highpressure gas well Xi351 in the Sichuan basin is proved to be with high accuracy in trinomial deliverability equation.

将该方法应用于四川盆地西35-1异常高压气井试井资料的整理，所获得的气井三项式产能方程精度高。

The trinomial deliverability equation can be determined based on the data of bottomhole flow pressure and gas production by using the rate multipleregression, and the open flow capacity and static formation pressure can also be derived.

为此，提出了一种精度高且计算简便的方法，不需要已知地层静压，只通过井底流压与产气量数据，利用多元线性回归方法，既可确定气井三项式产能方程，还可求得气井绝对无阻流量和地层静压。

Air sparging is widely used for remediating groundwater contamination of solvents or gasoline fuels. Air is injected into the saturated zone in the plume area through sparging well. Injected air contacts the contaminated groundwater and removes volatile organic compounds by volatization.

气提法应用在地下水及土壤污染整治的原理是将空气由注气井打入受污染区域的饱和含水层，注入地下水层的空气与非水相的挥发性有机污染物接触，会将污染地下水层的挥发性有机物挥发出来，并往上流入非饱和层中，再由抽气井抽出非饱和层之气体，将污染的挥发性有机物回收到地表进行处理。

However, the modern method, with the plate fitting method of gas well production performance curve characteristics as the primary method, uses the flowing pressure to calculate gas well dynamic reserves.

现今以&气井生产动态曲线特征图版拟合法&为主的动态计算储量方法，特点是利用流动压力计算气井动态储量。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。