长庆油田M区低渗产水气井动储量评价方法研究

动储量是确定气井合理产能和井网密度的重要依据,是编制、调整开发方案的物质基础。产水气井动储量评价的难点在于压降曲线向上偏转,无法利用压降曲线外推获得准确的动储量;传统水侵计算模型要求的水体参数难以获取且计算过程相对复杂。为此,在水驱气藏物质平衡原理和水侵量计算方法研究的基础上,推导了不同生产时间下偏转压降曲线的视压力差、水侵体积系数及水侵量的关系模型,建立了利用水侵量校正产水气井动储量的一种简单方法。应用结果表明,该方法不依赖水体参数,可预测早期水侵下的动储量,具有快速简便、相对可靠的特点。该方法的建立支撑了产水气井的动储量评价技术,为气田储量动用程度的提高奠定了基础。

气藏经营管理中的人财物管理

经商无论规模大小都需要经营管理,一家企业公司,只有管理得井井有条才是好企业,才能有长久的发展。经营气藏的企业,规模都十分庞大,结构复杂,需要稳妥的经营管理技巧才能正常运营。除了平常的工作流程化管理,还有就是从人、财、物这三个方面着重管理。

Extensive application of rate transient method in performance analysis for low permeability gas reservoirs

Rate transient method is a recently-developed performance analysis tool specially designed for low-permeability or tight gas reservoirs. This method, theoretically based on pressure transient analysis, integrates material balance principle and the concept of material balance pseudo-time proposed by Blansingame. With daily production data of gas well, it could be used to calculate OGIP, current formation pressure, permeability, skin factor, to identify complex geologic boundaries, to determine whether drainage boundary has been reached, to calculate drainage area and drainage radius for single well and to predict performance. It has been extensively employed in more than ten low-permeability gas fields. It proves that most problems in performance analysis for low permeability gas reservoirs could be solved by this method. Field practices show great economical benefits could be achieved by employing this method in gas field development.