论文部分内容阅读
克拉美丽气田属火山岩气藏,由于受火山喷发多期性影响,其岩性岩相变化较快,岩性致密,储层物性平面非均质性严重,渗透性很低、且渗透率差异很大,因而气井产能差异很大:不同岩性单井绝对无阻流量在(16.22～109.34)×104m3/d之间,同一岩性的正长斑岩单井绝对无阻流量在(21.83～56.71)×104m3/d之间,因此评价比较困难。如何科学、合理地评价其产能,在其开发过程中显得非常重要。首先利用动静结合的方法给出了气井的分类标准,接着利用产能方程法对其进行评价,最后综合利用产能方程和动态储量联合配产法、试采压降法、试井模型预测法、试气绝对无阻流量法、采气指数法、最小泄液法和管内冲蚀流量法等方法,对每类气井进行了配产研究,提出了每类井的合理配产范围。配产结果对今后该气田新井的单井配产具有一定的参考价值。
Kelameili gas field is a volcanic gas reservoir. Due to the multi-period volcanic eruption, the lithofacies gas field changes rapidly, lithology is compact, reservoir physical plane heterogeneity is serious, permeability is very low, and permeability is very different Therefore, the production capacity of gas wells varies greatly: the absolute unimpeded flow rate of single lithofacies in different lithologies ranges from (16.22 to 109.34) × 104m3 / d, the absolute unimpeded flow of single-well of the same lithology is between (21.83 and 56.71) × 104m3 / d, so the evaluation is more difficult. How to evaluate its production capacity scientifically and reasonably is very important in its development process. Firstly, the gas well classification criteria are given by the combination of the dynamic and the static methods, and then the production gas equation is used to evaluate the gas well. Finally, by comprehensively using the production capacity equation and the dynamic reserve combined production method, the test pressure drop method and the well test model prediction method, Gas absolute unobstructed flow method, gas production index method, minimum drainage method and in-tube erosion flow method were used to study the allocation of production for each type of gas well and put forward the reasonable allocation range for each type of well. The results of the allocation of production of the new wells in the future of single-well production with a certain reference value.