缝洞型碳酸盐岩靶向酸压目标体分类与建模

宋志峰; 张建光

doi:10.19509/j.cnki.dzkq.2021.0303

缝洞型碳酸盐岩靶向酸压目标体分类与建模

doi: 10.19509/j.cnki.dzkq.2021.0303

宋志峰^1,,
张建光^2, ,

基金项目:

国家自然科学基金项目 41502131

中央高校基本科研业务费专项 18CX02101A

国家重大专项 2016ZX05014-004-007

国家重大专项 2016ZX05053-14

详细信息

作者简介:
宋志峰(1983-), 男, 副研究员, 主要从事油气田开发研究工作。E-mail: zhifengsong@126.com

通讯作者:
张建光(1983-), 男, 讲师, 主要从事油气田开发研究工作。E-mail: eduzjg@163.com

中图分类号: P588.24⁺5
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- 文章访问数: 989
- PDF下载量: 614
- 被引次数: 0
出版历程
- 收稿日期: 2020-08-01

Classification and modeling of targeted fracture-cave bodies in acid fracturing

Song Zhifeng^1
,,
Zhang Jianguang^{2
, ,}

摘要

摘要: 塔河油田碳酸盐岩井周缝洞型储集体靶向酸压改造工艺针对性强，对于靶向目标精准定位与表征要求很高。围绕井周酸压增储提效，精准定量表征井筒附近储集体主应力方位、距离、规模、空间分布成为亟待解决的关键问题。从井孔与井周储层识别角度切入，采用一维资料-三维资料，多方法结合定量识别与刻画不同储层类型，在分类表征基础上，实现了模型的分类整合，构建了单元级次的多类型缝洞融合储层模型。然后，在单元级次模型基础上，创建了井周不同范围的可视化三维定量模型构建技术方法，建立了实际单井定量模型，并基于酸压靶向目标体三级八因素分类划分指标体系，确定了7种类型靶向目标体及适应的酸压技术方法。靶向酸压工艺矿场应用显示：靶向酸压井措施效果显著，同样区块范围井，比常规酸压方法平均增产倍比大，显著提高了酸压工艺的针对性和靶向性，有较好的推广应用前景。
- 三维建模 /
- 靶向酸压 /
- 缝洞型储层 /
- 碳酸盐岩 /
- 塔河油田
Abstract: targeted acid-fracturing technology is very demanding of the Localization and characterization of the reservoirs near wellbores.It is the key to accurately and quantitatively characterize the location, distance, scale and spatial distribution of the main stress of the reservoir near the wellbore.We realized the integration of the different types reservoir and builded multiple types fusion model of fracture-vug reservoir using five kinds of methods to depict different reservoir type with one-dimensional data to 3d data.Based on the unit level model, a visualized 3d quantitative model method for different ranges of Wells is established, and a three-level single well quantitative model is established.Based on the nine-factor of four-level classification index system of acidizing fracturing, 11 types of target reservoir and its adaptation technology methods were determined.Targeted acid-fracturing oil field application results: the effect is remarkable with higher production, more than 3.6 times than a conventional acid-fracturing in the same oil block.It significantly improves the pertinence and targeting of acid-fracturing technology.
- 3D modeling /
- targeted acid fracturing /
- fractured vuggy reservoir /
- carbonate rock /
- Tahe Oilfield

HTML全文

图 1 不同储层类型的识别参数模型

Figure 1. Identification parameters of different reservoir types

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图 2 不同储层类型的双压降分布

Figure 2. Dual pressure drop distribution of different reservoir types

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图 3 大尺度裂缝储层的刻画

Figure 3. Identification of large scale fracture reservoirs

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图 4 洞穴类型储层地震反演

Figure 4. Seismic inversion of the cave reservoirs

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图 5 溶蚀孔洞类型储层地震反演

Figure 5. Seismic inversion of the fracture-vug reservoirs

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图 6 S80单元多元储层融合模型

Figure 6. Multiple reservoir fusion model of S80 unit

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图 7 井周靶向储集体目标刻画流程

Figure 7. Characterization process of target reservoir near wellbore

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图 8 TK775H井周靶向储集体目标模型

Figure 8. Characterization process of target reservoir near wellbore

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图 9 井筒周围不同酸压区域的储集体特征

Figure 9. Reservoir characteristics of different aciding-fracture areas around wellbore

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表 1 塔河S80单元人工解释断层属性特征

Table 1. Fault attribute characteristics of S80 in Tahe Oilfield

方位	断层数/条	倾角/(°)		长度/m
方位	断层数/条	平均值	范围	平均值	范围
北西向	15	80	72~86	590	180~1 400
北东向	19	82	74~85	760	140~2 600
东西向	9	79	70~83	120	110~220
总计	43	81	70~86	630	110~2 600

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表 2 塔河靶向储集体目标划分指标体系

Table 2. Reservoir targets classification index system

距离与方位		空间展布				施工参数
与井筒距离/m	与主应力夹角/ (°)	平面分布与厚度/m	储量/ 10⁴t	形态结构(分层分段)	靶体数量	井型与海拔深度/m	避水高度/ m
近井周＜30; 远井周 [30, 80); 超远井 [80, 300]	低夹角 (＜45°); 高夹角 (＞75°)	单靶点类型; 多靶点类型	大规模＞2.0；中等规模[2.0, 1.0); 小规模＜1.0	直井(两层/多层); 水平井(两段/多段)	单目标; 多目标	直井; 水平井	无避水 ≤30; 高避水＞30

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表 3 塔河S80区主要靶向储集体目标划分类型

Table 3. Types of reservoir targets of S80 unit in Tahe Oilfield

大类类别	小类类别	属性特征	适合的酸压技术
主应力方位	第1类，近井周-近主应力-无避水型-单目标洞穴型储集体	D＜30 m， ANGLE＜5°， H＞30 m	常规酸压工艺技术
低非主应力方位	第2类，近/远井周-低非主应力-无避水型-单目标洞穴/暗河型储集体	D＜80 m, ANGLE＜45°, H＞30 m	缝内暂堵转向酸压工艺技术
低非主应力方位	第3类，近/远井周-低非主应力+无避水型—多目标洞穴/暗河型储集体	D＜80 m, ANGLE＜45°, H＞30 m, MUIT＞1	段间缝内暂堵转向酸压工艺技术
高非主应力方位	第4类，近井周-高非主应力-避水类型-单目标洞穴型储集体	D＜30 m, ANGLE＞75°, H＜30 m	脉冲波压裂技术(需控缝高)
水平井目标体类型	第5类，近井周-低角度斜交主应力-单目标地下洞穴型储集体	D＜30 m, ANGLE＜45°, H＞30 m	定向处理后缝内暂堵转向酸压
	第6类，近/远井周-低角度斜交主应力分段多目标体类型—洞穴型储集体	D＜80 m, ANGLE＜45°, H＞30 m, MUIT＞1	定向处理后分段酸压工艺技术
	第7类，近/远井周-高角度斜交主应力方位分段多目标体片状风化壳+洞穴型储集体	D＜80 m, ANGLE＞75°, H＞30 m, MUIT＞1	无工具分段酸压工艺技术
注：D为距离；ANGLE为力面度；H为避水高度；MUIT为目标体

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