一种用于油气勘探目标评价的钻后评估方法

王义刚; 盛秀杰; 杨双; 曹晋

doi:10.11781/sysydz2022061088

一种用于油气勘探目标评价的钻后评估方法

doi: 10.11781/sysydz2022061088

中国石化石油勘探开发研究院，北京 102206

基金项目:

中科院A类战略性先导科技专项“深层油气勘探定量评价软件平台” XDAXX010405

详细信息

作者简介:
王义刚(1973—)，男，博士，副研究员，从事石油地质与油气资源评价研究。E-mail: wyg252525@126.com

中图分类号: TE132.1
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出版历程
- 收稿日期: 2022-02-23
- 修回日期: 2022-10-09
- 刊出日期: 2022-11-28

Method of post-drilling assessment for the prospect evaluation of petroleum exploration

Petroleum Exploration and Production Research Institute, SINOPEC, Beijing 102206, China

摘要

摘要: 钻后评估是油气资源勘探过程中勘探目标评价活动的重要环节，通过钻前预测与钻后结果对比分析，总结经验，对钻前评价与预测工作中的不足进行不断校正和完善，使勘探目标的钻前评价和预测结果更加准确，进而提高下一步油气勘探的成功率。在介绍钻后评估主要内容和方法的基础上，总结钻后评估中需要重点关注的问题和解决方法。研究认为，在钻后评估中通过分析钻探成功目标和失败目标的地质风险评价结果及资源量计算参数预测结果，比较钻前预测和钻后估算产生较大偏差的关键要素，分析产生偏差的原因并在后续评价中进行重点改进，在提高后续勘探成功率，有效提升地质勘探人员勘探目标钻前评价和钻前预测能力方面有着重要意义。
- 油气资源评价 /
- 钻前预测 /
- 钻后评估 /
- 地质风险 /
- 勘探目标评价
Abstract: Post-drilling evaluation is an important part of prospect evaluation in the oil and gas exploration processes. With the comparative analysis of pre-drilling prediction and post-drilling results, the experience is summarized, and the deficiencies in pre-drilling evaluation and prediction are corrected and improved, so that the pre-drilling evaluation and prediction results of exploration targets are more accurate, and the success rate for the coming oil and gas exploration can be improved. Based on introducing the main contents and methods of post-drilling evaluation, the problems and solutions that need to be focused on in post-drilling evaluation are summarized in this paper. By analyzing the geological risk factors and reserve parameters of both successful and failed drilling, the key elements of large deviation between pre-drilling prediction and post-drilling estimation are compared, and the causes for the deviation are discussed and improved, which can be helpful on improving the geological explorers' ability of prediction and enhancing the success ratio of exploration in the following work.
- oil and gas resource evaluation /
- pre-drilling prediction /
- post-drilling assessment /
- geological risk /
- prospect evaluation

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图 1 勘探目标评价流程

Figure 1. Flow chart of exploration prospect evaluation

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图 2 某油田公司钻井实际钻探成功概率与预测结果对比

Figure 2. Comparison of actual drilling success probability and prediction results in an oilfield company

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图 3 某油田失败井地质风险因子钻前/钻后统计

Figure 3. Pre-drilling and post-drilling statistics of geological risk factors of failed wells in an oilfield

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图 4 渤海湾盆地某二级构造带上勘探目标的资源量计算参数及资源量钻前预测与钻后实际估算对比

Figure 4. Resource calculation parameters of exploration targets in a secondary structural belt of Bohai Bay Basin and comparison between pre-drilling prediction and post-drilling estimation

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