一种低渗稠油油藏储层改造技术

何春明; 吴刚; 卢昊; 钟小军; 张明; 孟杰; 郭朝霞; 周旭

doi:10.3969/j.issn.1001-5620.2018.01.020

一种低渗稠油油藏储层改造技术

doi: 10.3969/j.issn.1001-5620.2018.01.020

1. 中石油勘探开发研究院廊坊分院, 河北廊坊 065007;
2. 华北油田公司勘探事业部, 河北任丘 062552;
3. 华北油田公司, 河北任丘 062552

基金项目:

中国石油重大专项“华北油田持续有效稳产勘探开发关键技术研究与应用”（2017E-15）；国家科技重大专项“储层改造新工艺、新技术”（2016ZX05023-05）。

详细信息

作者简介:
何春明,博士,现在主要从事油气藏储层改造技术研究工作。电话13833695421;E-mail:hcm8898533@163.com。

中图分类号: TE357.2
计量
- 文章访问数: 559
- HTML全文浏览量: 149
- PDF下载量: 194
- 被引次数: 0
出版历程
- 收稿日期: 2017-10-05
- 刊出日期: 2018-01-30

A Technology for Stimulating Low Permeability Heavy Oil Reservoirs

1. Langfang Branch of PetroChina Research Institute of Petroleum Exploration and Development, Langfang, Hebei 065007;
2. Division of Exploration, PetroChina Huabei Oilfield Company, Renqiu, Hebei 062552;
3. PetroChina Huabei Oilfield Company, Renqiu, Hebei 062552

摘要

摘要: 针对低渗稠油储层物性差、原油黏度高，常规压裂改造效果差的难题，形成了以“储层改造+流体改质”为核心的储层改造技术。通过降黏剂评价实验，优选出阴离子型表面活性剂作为原油的降黏剂，优化降黏剂用量为3%。物模实验表明，降黏剂发挥最优降黏效果所需时间1～3 d。优化形成超低浓度（0.18%）低伤害压裂液体系，60℃、170 s^-1剪切120 min压裂液黏度保持在100 mPa×s，形成以端部脱砂为主体的高导流压裂改造技术。该技术在华北油田X井进行现场应用，压后初期产油量为10.06 t/d，产水量为1.54 m³/d，是邻井产量的3倍以上，压后3个月累积增油量达518 t，取得了好的改造效果，该技术的成功应用为同类型储层改造提供了很好的借鉴思路。
- 增产措施 /
- 降黏剂 /
- 低渗油藏 /
- 稠油油藏压裂液
Abstract: A set of technologies, with "reservoir stimulation plus fluid quality improvement" as the core technology, have been developed to stimulate low permeability heavy oil reservoirs, which have poor physical properties and high viscosity crude oil, and show poor stimulation results with conventional fracturing technology. An ionic surfactant was selected through laboratory experiment as the viscosity reducer for crude oil, and the dosage of the viscosity reducer was determined to be 3% through optimization. Physical simulation results showed that time required for the viscosity reducer to show optimum viscosity reducing effect was 1-3 d. A low damage fracturing fluid with ultra-low concentration (0.18%) viscosity reducer was formulated through optimization, and the viscosity of the fracturing fluid was maintained at 100 mPa乌s after shearing the fluid at 60℃ and 170 s^-1 for 120 min. Using this fracturing fluid, a high conductivity tip screen-out fracturing technology has been developed. This technology has been applied on the well X in Huabei Oilfield, and the initial oil production rate after fracturing was 10.06 t/d, 3 times of the oil production rate of the adjacent well, and water production rate was 1.54 m³/d. The total amount of oil increased 3 months after fracturing was 518 t, indicating that the fracturing job was successful. This technology has provided a good clue for stimulating reservoirs of the same type.
- Fracturing technology /
- Viscosity reducer /
- Low permeability reservoir /
- Fracturing fluid

HTML全文

参考文献(7)

[1]	邹才能,王兆云. 松辽盆地西斜坡稠油特征及成因[J]. 沉积学报,2004,22(4):700-706. ZOU Caineng,WANG Zhaoyun.Characteristics and genesis of the western slope thick oils in songliao basin[J]. Acta Sedimentologica Sinca,2004,22(4):700-706.
[2]	谭忠健,许兵,冯卫华,等.海上探井特稠油热采测试技术研究及应用[J].中国海上油气,2012,24(5):6-10. TAN Zhongjian,XU Bingfeng,WEI Hua,et al. Researching and applying test techniques of thermal recovery in offshore exploration wells with extra-heavy oil[J].China Offshore Oil and Gas,2012,24(5):6-10.
[3]	何志勇,徐新俊,贾金辉,等. 大港油田官109_1断块稠油油藏碱表面活性剂吞吐采油技术[J]. 油田化学, 2006,23(2):116-119. HE Zhiyong,XU Xinjun,JIA Jinhui,et al.Alkaline/surfactant huff-puff for heavy oil recovery from faultblocked reservoir Guan-109-1Dagang[J].Oilfield Chemistry,2006,23(2):116-119.
[4]	CAI BO,YUN HONG,YONG JUN.A case study of hydraulic fractures optimization in heavy oil[C]. SPE 172849,2014.
[5]	ZAGREBELNYY,MARTYNOV,KONOPELKO. Successful hydraulic fracturing techniques in shallow unconsolidated heavy oil sandstones[C].SPE187682,2016.
[6]	刘忠运,李莉娜.稠油乳化降黏剂研究现状及其发展趋势[J].精细化工原料及中间体,2009,38(12):23-26. LIU Zhongyun,LI Lina.Research advance and development tendency of emulsifying viscosity reducer for heavy oil[J].Fine Chemical Intermediate,2009,38(12):23-26.
[7]	曲冠政,曲占庆,祝晓华,等.端部脱砂工艺优化设计[J]. 科学技术与工程,2013,6(4):1602-1605. QU Guanzheng,QU Zhanqing,ZHU Xiaohua,et al. Optimal design of tip screenout fracturing treatment[J]. Science Technology and Engineering,2013,6(4):1602-1605.