PNN测井在剩余油评价中的应用——以老区油田高台子油层为例

doi:10.11720/wtyht.2024.1075

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摘要

老区油田目前处于开发的中后期,高台子油层含水饱和度大幅度增加,纵向分层情况认识不清,区域剩余油藏分布规律不明,增大了挖潜难度和节能减排压力。为进一步认清高台子油层剩余油藏的分布情况,指导生产作业,明确潜力方向,在研究区域应用PNN(脉冲中子—中子)测井技术识别储层剩余油藏的纵向分布情况。将10口井的监测结果与生产资料对比,措施符合率为80%。研究表明PNN测井技术能够较好地在纵向分层上识别储层的剩余油藏分布状况,在指导单井在高含水层补孔堵水方面,整体应用效果较好,产油量增加。该方法的结合应用提高了老区油田高台子油层评价剩余油饱和度的准确性,为制定和调整后续油田开发方案提供了技术支持,为进一步指导油藏高效开发和节能减排提供了科学依据。

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	苏可嘉
	秦臻
	冯敏
	艾寒冰
	王港
	关华玲
	付宇

关键词 ： PNN测井, 高台子油层, 剩余油饱和度, 油田开发

Abstract：

As mature oilfields are in their middle to late exploitation stage, the Gaotaizi oil layer exhibits significantly increased water saturation, elusive longitudinal stratification, and unknown distribution patterns of regional residual oil. These complicate the potential exploitation, energy conservation, and emission reduction. To ascertain the distribution of residual oil in the Gaotaizi oil layer in order to guide production operations and clarify potential targets, this study identified the longitudinal distribution of residual oil in the study area using the pulsed neutron-neutron (PNN) logging technique. The comparison between the monitoring results and production data of 10 wells revealed a coincidence rate of measures of 80%. The results of this study show that the PNN logging technique can be used to effectively identify the longitudinal distribution of residual oil in reservoirs and yields encouraging application performance in guiding the hole filling and water plugging for single wells in high-water-cut layers, thus increasing oil production. This technique has increased the evaluation accuracy of residual oil saturation in the Gaotaizi oil layer in the mature oilfield. It can provide technical support for formulating and adjusting subsequent oilfield exploitation schemes and offer a scientific basis for further guiding efficient reservoir exploitation, energy conservation, and emission reduction.

Key words： PNN logging Gaotaizi oil layer residual oil saturation oilfield exploitation

收稿日期: 2023-02-22 修回日期: 2023-10-24 出版日期: 2024-04-20

ZTFLH:

P631

基金资助:国家自然科学基金项目(42364009);国家自然科学基金项目(41804097);江西省自然科学基金项目(20224BAB203044)

通讯作者: 秦臻

作者简介: 苏可嘉(1992-),男,硕士,主要研究方向为地球物理测井及铀矿地质研究。Email:1031420203@qq.com

引用本文:

苏可嘉, 秦臻, 冯敏, 艾寒冰, 王港, 关华玲, 付宇. PNN测井在剩余油评价中的应用——以老区油田高台子油层为例[J]. 物探与化探, 2024, 48(2): 393-402.
SU Ke-Jia, QIN Zhen, FENG Min, AI Han-Bing, WANG Gang, GUAN Hua-Ling, FU Yu. Application of PNN logging in residual oil evaluation: A case study of the Gaotaizi oil layer in mature oilfields. Geophysical and Geochemical Exploration, 2024, 48(2): 393-402.

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https://www.wutanyuhuatan.com/CN/10.11720/wtyht.2024.1075 或 https://www.wutanyuhuatan.com/CN/Y2024/V48/I2/393

Table 1 PNN测井技术指标

Fig.1 PNN测井部署分布

Fig.2 A井PNN测井解释成果

Fig.3 TNIS测井成果

Fig.4 老区高台子含油饱和度分布

Table 2 PNN测井解释成果

Fig.5 A井下电视测井成像

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