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  gas well
A model of a gas well containing liquid is considered, the nature of the steady-state regimes is investigated, and the causes of cyclical output are analyzed.
      
Solar multi-spectral radiometric observations of atmospheric optical thickness over pasarlapudi gas well blow-out site in india
      
Multi-spectral observations of solar radiation using a Volz sun-photometer have been carried out during February 24-March 2, 1995 in the vicinity of the blow-out of the gas well at Pasarlapudi, Andhra Pradesh, India.
      
Investigating the thermal interaction between a gas well and permafrost soils
      
We present a method, a description of the algorithm, and the results from the calculation of the thermal fields about a gas well drilled through permafrost soil.
      
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  gas wells
Analysis of the operation of a system of gas wells draining a closed gas stratum
      
During drilling of oil and gas wells, drilling muds (a suspension of clay particles in water) are pumped into them.
      
The development of theoretical foundations for electromagnetic flaw detection of oil and gas wells
      
In addition, if the barrier islands disappear, the region's wetland-oriented oil and gas wells and associated infrastructure will be at risk to open Gulf conditions.
      
On the possibility of acoustic probing of gas wells
      
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In the paper,a new method of calculation bottom hole pressure was presented. An analysis laboratory data,it was found that in certain range of pressure and tem- peratures compressibility factor can be expressed by the following formula,(zT_r)/(P_r)= (1)/(A+Bp_r) approximately.Taking this into consideration formulas for calculating both static and flowing gas column pressures have been derived.Using this formula, specific chart for the determination of factor z and the conversional succession appro- ximation...

In the paper,a new method of calculation bottom hole pressure was presented. An analysis laboratory data,it was found that in certain range of pressure and tem- peratures compressibility factor can be expressed by the following formula,(zT_r)/(P_r)= (1)/(A+Bp_r) approximately.Taking this into consideration formulas for calculating both static and flowing gas column pressures have been derived.Using this formula, specific chart for the determination of factor z and the conversional succession appro- ximation method are not required and the calculation is greatly simplicated. Application of this method to a number of wells in sichuan and Qinghai Gas fie- lds gives results closed to that obtained by numerical integrate method and successive approximation

本文介绍一种气井井底压力计算的新方法。通过实验数据作图分析,发现在一定的压力(或对比压力 p_r)和温度(或对比温度 T_r)范围内(zT_r)/(p_r)=1/(A+Bp_r),这样根据气体流动的能量方程,可得到静气柱和动气柱时的井底压力计算公式。运用此式可不用依次渐近法,不查压缩系数,从而简化了计算。用相当数量的实际资料验算,其结果与数值积分法和依次渐近法相当接近。

In the process of balance pressure drilling in fractured carbonate formation,fluid loss is possible when the hole penetrates the fracture.In this paper,the writer indicates that,after the occurrence of fluld loss,the annular space may be filled,at regular inter- vals,with suitable amounts of mud to maintain low differential pressure between the formation and the hole.At the same time, the preparations for controlling fluid loss can be made and then the work for stopping lost circu- lation by running the drill...

In the process of balance pressure drilling in fractured carbonate formation,fluid loss is possible when the hole penetrates the fracture.In this paper,the writer indicates that,after the occurrence of fluld loss,the annular space may be filled,at regular inter- vals,with suitable amounts of mud to maintain low differential pressure between the formation and the hole.At the same time, the preparations for controlling fluid loss can be made and then the work for stopping lost circu- lation by running the drill pipe without bit can be started. The well can be completed by coming out of the hole and running tubing in case the fluid loss occurs in the productive forma- tion.It is named“maintaining low differential pressure”method. Since the 1970s,a number of wells in He- jiang of southern Sichuan have been completed succesfully and a good economic benefit has been obtained by using above-mentioned meth- od.

碳酸盐裂缝性地层,在平衡钻进过程中,一旦钻遇裂缝,就可能发生井漏。本文介绍了在发生井漏后,间隔一定时间,反灌定量泥浆,以维持井下处于低压头的漏失状态,同时进行堵漏准备,下光钻杆堵漏,如漏层即产层则起钻下油管完井,称之为“吊灌”作业法。七十年代以来,川南合江等地区一批气井采用“吊灌”完成取得成功,并收到良好的经济效益。

The pressure anomaly is a common pheno- menon in gas well production,it may be caused by different factors.The well head pressure of the well No.2 zhangjiachang in pro- dacing test was 57.31kg/em2 higher than origin- al shut-in pressure.It was once an unfathomable puzzle for us、and a grave accident would have happened if it hadn't been handled properly. The paper presents that the well-site person_ nel collected data in time,made a scientifi analysis by using the gas equation in accordance with the well state,distinguished...

The pressure anomaly is a common pheno- menon in gas well production,it may be caused by different factors.The well head pressure of the well No.2 zhangjiachang in pro- dacing test was 57.31kg/em2 higher than origin- al shut-in pressure.It was once an unfathomable puzzle for us、and a grave accident would have happened if it hadn't been handled properly. The paper presents that the well-site person_ nel collected data in time,made a scientifi analysis by using the gas equation in accordance with the well state,distinguished that the reason was the annular space being blocked up and took correct measure of removing obstacole,This experience may be used for reference in gas well production.

气井压力反常是生产中常见的现象,可能由不同因素引起。张2井试生产中井口压力高出原关井压力57.31kg/cm~2,一时惑解,若处理不当易引起恶性事故发生。本文介绍现场人员及时地收取资料,结合井况,利用气体方程进行科学分析,判明为气井环空堵塞,正确地采取排障措施,供气井生产中借鉴。

 
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