孙荣华, 陈阳, 王绍先, 张磊, 万绪新. 水平井分段控流完井技术应用效果评价方法[J]. 石油钻探技术, 2019, 47(4): 41-46. DOI: 10.11911/syztjs.2019089
引用本文: 孙荣华, 陈阳, 王绍先, 张磊, 万绪新. 水平井分段控流完井技术应用效果评价方法[J]. 石油钻探技术, 2019, 47(4): 41-46. DOI: 10.11911/syztjs.2019089
SUN Ronghua, CHEN Yang, WANG Shaoxian, ZHANG Lei, WAN Xuxin. Evaluating the Application Effect for Staged Fluid Control Completion Technology in Horizontal Wells[J]. Petroleum Drilling Techniques, 2019, 47(4): 41-46. DOI: 10.11911/syztjs.2019089
Citation: SUN Ronghua, CHEN Yang, WANG Shaoxian, ZHANG Lei, WAN Xuxin. Evaluating the Application Effect for Staged Fluid Control Completion Technology in Horizontal Wells[J]. Petroleum Drilling Techniques, 2019, 47(4): 41-46. DOI: 10.11911/syztjs.2019089

水平井分段控流完井技术应用效果评价方法

Evaluating the Application Effect for Staged Fluid Control Completion Technology in Horizontal Wells

  • 摘要: 为合理评价分段控流完井技术的应用效果,基于累计产油量、日产油量年递减率、年平均含水率和含水率年上升幅度等4项生产指标,建立了理论评价方法和综合评价方法。理论评价方法以D311P5井为实例井,使用数值模型计算常规完井条件下实例井的生产指标,以搭建起分段控流完井条件下实例井与常规完井条件下2口邻井实施对比的中介桥梁,该方法适用于应用井较少或需要精细评价特定井的情况;综合评价方法以D311断块为例,为12口实例井匹配24口邻井,建立96个对比样本,充分利用现场生产数据对比分析实例井及其邻井的生产指标。理论评价结果显示,D311P5井在常规完井方法条件下的生产指标与2口邻井基本持平,该结果与这3口井开采条件相近的实际情况相符,而D311P5井在分段控流完井条件下的生产指标明显优于其常规完井条件;综合评价结果显示,实例井生产指标优于邻井的对比样本为70个,占比72.9%。研究结果表明,分段控流完井技术在D311断块的应用效果良好,达到了增油、稳油、控水的目的,对其他区块完井技术的应用效果评价具有一定的指导作用。

     

    Abstract: In order to reasonably evaluate the application effect of the staged fluid control completion technology, the theoretical evaluation method and comprehensive evaluation method were established based on the four production indices which included the cumulative oil production, the annual decline rate of daily oil production, the annual average water cut and increase range of water cut. Taking the Well D311P5 as an example, the production indices of the example well were calculated by numerical model to evaluate it theoretically under the conventional completion conditions. This allowed the researchers to establish the intermediary bridge for the comparison of the example well and two offset wells by staged fluid control completion under the conventional completion conditions. The method is suitable for those cases where there are few wells or there is a need to precisely evaluate the specific wells. The statistical evaluation method takes D311 fault block as an example. For each example well, two offset wells were selected, i.e. 12 example wells and 24 offset wells to form a comparison group. A total number of 96 comparison samples were established in Block D311 to analyze the production indices of the example wells and offset wells by virtue of field production data. The theoretical evaluation results indicated that under the conditions of conventional completion methods the production indices of Well D311P5 were basically the same as that of two offset wells. This result was consistent with the actual situation of three wells with similar production conditions. Well D311P5 obtained better production indices under the conditions of staged inflow control completion than that of conventional completion methods. Thus, the statistical evaluation results suggested that 70 comparison samples exhibited better production indices than that of the offset wells, accounting for 72.9%. The research results showed that staged fluid control completion technology had a good effect in Block D311, and achieved the purposes of oil increment, oil stabilization, water control and water production mitigation, which will provide good reference for evaluating its application effect in other blocks.

     

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