碳酸盐岩储层酸压裂缝高度延伸规律——以川西栖霞组为例

doi:10.12108/yxyqc.20200219

岩性油气藏 ›› 2020, Vol. 32 ›› Issue (2): 169–176.doi: 10.12108/yxyqc.20200219

• 石油工程 • 上一篇

碳酸盐岩储层酸压裂缝高度延伸规律——以川西栖霞组为例

罗志锋^1,2, 黄静云^1,2, 何天舒^1,2, 韩明哲^1,2, 张锦涛³

1. 西南石油大学石油与天然气工程学院, 成都 610500;
2. 西南石油大学油气藏地质及开发工程国家重点实验室, 成都 610500;
3. 中国石油西南油气田分公司, 成都 610051

收稿日期:2019-12-18 修回日期:2020-03-04 发布日期:2020-04-29
通讯作者: 黄静云(1995-),男,西南石油大学在读硕士研究生,研究方向为酸化/压裂、油气藏增产理论。Email:HuangJY_1024@163.com。 E-mail:HuangJY_1024@163.com
作者简介:罗志锋(1980-),男,博士,副教授,主要从事油气藏动态及增产改造技术理论方面的研究工作。地址:(610500)四川省成都市新都区新都大道8号。Email:lzf03429@163.com
基金资助:
国家自然科学基金项目“缝洞型碳酸盐岩靶向酸压复杂裂缝扩展机理及调控方法研究”（编号：5197041731）资助

Extending regularity of fracture height by acid fracturing in carbonate reservoir: a case study of Qixia Formation in western Sichuan

LUO Zhifeng^1,2, HUANG Jingyun^1,2, HE Tianshu^1,2, HAN Mingzhe^1,2, ZHANG Jintao³

1. School of Petroleum Engineering, Southwest Petroleum University, Chengdu 610500, China;
2. State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China;
3. PetroChina Southwest Oilfield Company, Chengdu 610051, China

Received:2019-12-18 Revised:2020-03-04 Published:2020-04-29

摘要/Abstract

摘要： 针对川西深层海相碳酸盐岩的开发，酸压是非常有效的增产手段；川西深层海相碳酸盐岩储层存在非均质性强、储层薄、储隔层应力差较小等问题，目前改造的技术难题是缝高的控制。针对川西X气井地质情况，基于有限元数值模拟方法，研究了工程地质因素对缝高的影响规律，并通过FracPT软件净压力拟合、微地震数据和生产井温数据获得的缝高结果，验证了本模型的合理性。结果表明，减小工作液黏度、施工排量和注液规模、增大储隔层间应力差有利于控制缝高；基于该结果，指导了X气井施工参数优化，施工后X气井测试日产气量10.45万m³，酸压施工增产效果好。该研究成果对于川西深层海相碳酸盐岩的酸压优化设计和现场施工具有指导作用。

关键词: 碳酸盐岩油气藏, 酸压, 裂缝高度, ABAQUS, 有限元, 三维模拟

Abstract: Acid fracturing is a very effective means of increasing production for the development of deep marine carbonates in western Sichuan. Currently, there exists many problems in the development of deep marine carbonates in western Sichuan such as strong heterogeneity, thin reservoirs, and small differences of reservoir stress. Technically, the main problem in transformation is the control of fracture height. Therefore, the influence of engineering geological factors on fracture height was studied with the geological conditions of the X gas well in western Sichuan into consideration by means of finite element numerical simulation. Moreover, this simulated model was verified by the results of the fracture height obtained by net pressure fitting on FracPT software, microearthquake data and data of production well temperature. For last analysis, the results of this paper show that the viscosity of the working fluid, the construction displacement and the injection scale, and the difference increase in inter-stress of the reservoir barrier are good for controlling the fracture height. The result well guides the parameter optimization of the X gas well construction. After the construction, the daily gas production of the X gas well test is 104, 500 m³. This paper plays a guiding role in the optimal design of acid fracturing and on-site construction in deep marine carbonate rocks in western Sichuan.

Key words: carbonate reservoir, acid fracturing, fracture height, ABAQUS, finite element method, three dimensional numerical simulation

中图分类号:

TE323

罗志锋, 黄静云, 何天舒, 韩明哲, 张锦涛. 碳酸盐岩储层酸压裂缝高度延伸规律——以川西栖霞组为例[J]. 岩性油气藏, 2020, 32(2): 169–176.

LUO Zhifeng, HUANG Jingyun, HE Tianshu, HAN Mingzhe, ZHANG Jintao. Extending regularity of fracture height by acid fracturing in carbonate reservoir: a case study of Qixia Formation in western Sichuan[J]. Lithologic Reservoirs, 2020, 32(2): 169–176.

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碳酸盐岩储层酸压裂缝高度延伸规律——以川西栖霞组为例

Extending regularity of fracture height by acid fracturing in carbonate reservoir: a case study of Qixia Formation in western Sichuan

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