致密油藏水平井注水吞吐效果评价方法

doi:10.3969/j.issn.1006-6535.2022.02.013

特种油气藏 ›› 2022, Vol. 29 ›› Issue (2): 91-97.DOI: 10.3969/j.issn.1006-6535.2022.02.013

致密油藏水平井注水吞吐效果评价方法

邸士莹¹, 程时清¹, 代力², 李旺东³, 缪立南⁴, 刘琦⁵

1.中国石油大学(北京),北京 102249;
2.中国石油塔里木油田分公司,新疆塔里木 843399;
3.延长油田股份有限公司,陕西靖边 718500;
4.中国石油大庆油田有限责任公司,黑龙江大庆 163458;
5.中国石油吐哈油田分公司,新疆哈密 839000

收稿日期:2021-01-29 修回日期:2021-11-16 出版日期:2022-04-25 发布日期:2023-01-10
通讯作者: 程时清(1963—),男,研究员,博士生导师,1984年毕业于大庆石油学院石油工程专业,2000年毕业于中科院渗流力学所渗流力学专业,获博士学位,现从事油气藏动态监测、油气藏工程、非常规油气田开发、油藏工程软件研制等方面的研究工作。
作者简介:邸士莹(1982—),女,2005年毕业于大庆石油学院石油工程专业,现为中国石油大学(北京)油气田开发专业在读博士研究生,从事致密油藏渗吸机理、非常规油藏开发规律及开发方式研究。
基金资助:
国家自然科学基金“致密油藏注水诱发微裂缝机理及反演方法”(11872073);中国石油天然气集团有限公司、中国石油大学(北京)战略合作科技专项“鄂尔多斯盆地致密油-页岩油油藏工程方法及关键技术研究”(ZLZX2020-02-04-02)

Evaluation Method of Water-flood Stimulation Effect of Horizontal Wells in Tight Oil Reservoirs

Di Shiying¹, Cheng Shiqing¹, Dai Li², Li Wangdong³, Miao Li′nan⁴, Liu Qi⁵

1. China University of Petroleum (Beijing), Beijing 102249, China;
2. PetroChina Tarim Oilfield Company, Tarim, Xinjiang 843399, China;
3. Yanchang Oil Field Co., Ltd., Jingbian, Shaanxi 718500, China;
4. PetroChina Daqing Oilfield Co., Ltd., Daqing, Heilongjiang 163458, China;
5. PetroChina Tuha Oilfield Company, Hami, Xinjiang 839000, China

Received:2021-01-29 Revised:2021-11-16 Online:2022-04-25 Published:2023-01-10

摘要/Abstract

摘要： 针对致密油藏注水吞吐效果变差的问题,运用油藏工程方法,综合考虑了地质特征、压裂工艺及注水吞吐制度,基于压裂液返排率和压裂增产倍数,定量表征致密储层天然裂缝与压裂裂缝形成的复杂缝网发育程度,得到了缝网发育系数计算方法。采用九标度法,建立评价指标权重集,进行模糊计算与类型识别。将研究成果应用于三塘湖盆地M区块注水吞吐效果评价,建立10项评价指标,将每项评价指标取值分为3类,确定了每类指标的取值界限。结果表明,I类井比例达到45.1%,与实际产量对比,准确率达86.21%。该研究可为致密油藏注水吞吐提供参考。

关键词: 致密油藏, 注水吞吐, 评价方法, 水平井, 压裂液净入地量, 有效注水率, 油水置换率

Abstract: In view of poor water-flood stimulation effect in tight reservoirs, the reservoir engineering method was applied, taking into account the geological characteristics, fracturing technologies and water-flood stimulation system, to quantitatively characterize the degree of development of the complex fracture network formed by natural and fractured fractures in tight reservoirs based on the fracture fluid flowback rate and fracturing stimulation multiplier, and to work out a method for calculating the fracture network development coefficient. The nine-scale method was used to establish weight set of evaluation indicators for fuzzy calculation and type identification. The study results were applied to the evaluation of water-flood stimulation effect in Block M, Santanghu Basin, 10 evaluation indicators were established, and the value of each evaluation indicator were divided into three categories, and the value limit of each category were determined. The results showed that the proportion of Class I wells was 45.1%, and the accuracy rate was 86.21% compared with actual production. This study on development effect evaluation provides a reference for water-flood stimulation in tight reservoirs.

Key words: tight oil reservoir, water-flood stimulation, evaluation method, horizontal well, net inflow of fracturing fluid into ground, effective water injection rate, oil-water replacement rate

中图分类号:

TE341

邸士莹, 程时清, 代力, 李旺东, 缪立南, 刘琦. 致密油藏水平井注水吞吐效果评价方法[J]. 特种油气藏, 2022, 29(2): 91-97.

Di Shiying, Cheng Shiqing, Dai Li, Li Wangdong, Miao Li′nan, Liu Qi. Evaluation Method of Water-flood Stimulation Effect of Horizontal Wells in Tight Oil Reservoirs[J]. Special Oil & Gas Reservoirs, 2022, 29(2): 91-97.

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致密油藏水平井注水吞吐效果评价方法

Evaluation Method of Water-flood Stimulation Effect of Horizontal Wells in Tight Oil Reservoirs

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