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气井生产能力
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    Alcohol treatment also causes shrinkage of swollen clay,so that the effective permeability of gas may be increased and the production ability of the gas well may be restored.
    当有粘土存在时,还可使膨胀的粘土收缩,从而提高气体的有效渗透率,恢复气井生产能力
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    During the depletion production of condensate gas reservoirs, when pressure is lower than the dew point pressure, condensate phenomenon occurs, the condensate gas is accumulated rapidly in near-wellbore area and is the production capacity of gas wells severely damaged.
    凝析气藏衰竭开发过程中,压力低于露点压力时,会发生反凝析现象,凝析油在近井地带迅速聚 集,严重损害气井生产能力
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    The study results show the productivity of gas wells is relative with the location and thickness of the sand body where the gas well lies at. The gas wells that lie within the main sand belt or have big effective thickness possess high productivity and good production stability.
    研究得出气井产能的大小与气井所处的砂体位置及砂体的厚度有关,位于主砂带内部或有效厚度大的气井,生产能力和生产稳定性较好;
短句来源
    The gas wells that lie in the sides of the main sand belt or have less effective thickness and poor permeability possess low productivity and poor production stability.
    位于主砂带边部或有效厚度小、渗透性较差的气井生产能力和生产稳定性差。
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Tight gas lormation can be damaged by water invasion in the operation of drilling,completion and stimulation.Alcohol can decrease this damage.The alcohol treatment mechanism is that the invaded water can be removed by decreasing surface tension and forming low boiling point azeotrope.Alcohol treatment also causes shrinkage of swollen clay,so that the effective permeability of gas may be increased and the production ability of the gas well may be restored.A method for studing permeability distribution after core...

Tight gas lormation can be damaged by water invasion in the operation of drilling,completion and stimulation.Alcohol can decrease this damage.The alcohol treatment mechanism is that the invaded water can be removed by decreasing surface tension and forming low boiling point azeotrope.Alcohol treatment also causes shrinkage of swollen clay,so that the effective permeability of gas may be increased and the production ability of the gas well may be restored.A method for studing permeability distribution after core damage is suggested in this paper.The main damage region was found to be in the entrance with 1-3 mm,Because of the decrease of water saturation and the shrinkage of filter film,the effect of fracturing will bo enhanced.Alcohol can be used for decreasing formation damage as a single measure or as pretreatment or post-treatment of other stimulation measures (fracturing and acidizing).

在钻井过程中,致密气层会受到伤害,醇处理可以减少这种伤害。这是因为醇可以减小表面张力,与水或水和烃形成低沸点共沸物,将侵入的水排出。当有粘土存在时,还可使膨胀的粘土收缩,从而提高气体的有效渗透率,恢复气井生产能力。本文提出了在不同地层条件下选择醇浓度的方法,为实际应用创造了条件。还提出了一种研究岩心伤害后渗透率在岩心中分布的方法,研究结果证明,离岩心入口端1~3mm的区域是主要伤害区。醇处理可以减小伤害区的含水饱和度,并使压裂液产生的滤膜收缩,因此可有效地改善压裂措施的增产效果。醇处理既可以作为致密气层的一种单独处理措施,也可以作为其它措施(如压裂、酸化)的预处理或后处理步骤,以减少气层的伤害。

Based on the producing history of more than 20 years in Banqiao condensate gas reservoir,the production properties of the Ban Ⅱ high liquid hydrocarbon condensate gas reservoir in the center area of the reservoir are expounded.Then,by use of the modern reservoir engineering principles and analysis methods and in combination with the new methods,new techniques and new trend of producing the condensate gas reservoirs at home and abroad,the production properties of condensate gas reservoirs are analyzed and discussed...

Based on the producing history of more than 20 years in Banqiao condensate gas reservoir,the production properties of the Ban Ⅱ high liquid hydrocarbon condensate gas reservoir in the center area of the reservoir are expounded.Then,by use of the modern reservoir engineering principles and analysis methods and in combination with the new methods,new techniques and new trend of producing the condensate gas reservoirs at home and abroad,the production properties of condensate gas reservoirs are analyzed and discussed in detail and six production properties of the high liquid hydrocarbon condensate gas reservoirs with oil rims are systematically summarized as follows:①condensate content increases with the increase of the buried depth of structure,being inversely proportional to recovery factor;②the heavy components are firstly lost from condensate in the process of pressure drop production;③the influence of the oil rim and edge water on the productivity of condensate gas well reduces with the reduction of pressure;④depletion type production causes the condensate and crude oil to be lost considerably;⑤oil rim production is of a good effect because of gas cap drive;and ⑥ gas reservoir phase state feature contracts regularly in the process of depletion type development.It is proved through practice that the conclusion is correct and reliable,which provides a feasible on site operation experience for producing the condensate gas reservoirs in China.

文章以板桥凝析气藏20 多年的开采经历为依据,论述了该气藏中区板Ⅱ高液烃含量凝析气藏的开采特点,并采用现代油气藏工程原理和分析方法,结合目前国内外凝析气藏开采的新方法、新技术和新趋势,详细分析论述了凝析气藏的开采特征,系统总结了带油环高液烃含量凝析气藏6 大开采特征:①凝析油含量随构造深度增加而增加,与采收率成反比;②在降压开采过程中凝析油首先损失的是重质组分;③凝析气井生产能力受油环边水影响,随压力降低而降低;④枯竭式开采造成了凝析油、原油大量损失;⑤利用气顶驱油,油环开采效果好;⑥枯竭式开发过程中,气藏相态特征有规律地收缩。实践证明,该结论真实可靠,为国内凝析气藏的开采提供了切实可行的现场操作经验。

Majing gas field is a new gas field.It is found at the end of 1997.It has drilled 15 wells.Industrial gas stream is obtained in 12 wells In the gas field,Mapeng well 3 and Mapeng well 7 produce water,Chuanma well 601 and Mapeng well 2 produce a few condensate,Chuanma well 602 produce a few water and condensate.On the basis of production features and distribution distinguishing features of reservoirs in the gas field,the paper proposes out well position distribution during exploration,introduces reservoir protection...

Majing gas field is a new gas field.It is found at the end of 1997.It has drilled 15 wells.Industrial gas stream is obtained in 12 wells In the gas field,Mapeng well 3 and Mapeng well 7 produce water,Chuanma well 601 and Mapeng well 2 produce a few condensate,Chuanma well 602 produce a few water and condensate.On the basis of production features and distribution distinguishing features of reservoirs in the gas field,the paper proposes out well position distribution during exploration,introduces reservoir protection techniques during drilling,sand fracturing techniques in gas reservoir reforming,and sand control/plugging sand techniques and foam water draining techniques during developing.These development techniques can increase production capacity of gas well and production of gas field.

马井气田是于 1 997年底发现的新气田 ,至今已完钻 1 5口井 ,1 2口井获工业气流。该气田试采过程中马蓬 3井、马蓬 7井产水、川马 60 1井、马蓬 2井产少量凝析油 ,川马 60 2井产少量水及凝析油。根据该气田一年来的试采特征及该地区储层低孔、低渗透及地层水区域分布的特点 ,提出了该气田勘探过程中的布井井位及钻井过程中的储层保护技术、气层改造加砂压裂技术以及开发过程中的防砂堵砂技术、泡沫排水技术。这些开发技术的实施 ,在一定程度上提高了气井的生产能力 ,增大了气田的产量。

 
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