绒囊暂堵液原缝无损重复压裂技术

郑力会; 翁定为

doi:10.3969/j.issn.1001-5620.2015.03.021

绒囊暂堵液原缝无损重复压裂技术

doi: 10.3969/j.issn.1001-5620.2015.03.021

郑力会^1,2,
翁定为¹

1.
中国石油大学(北京), 北京
2. 油气井国家工程重点实验室防漏堵漏研究室, 武汉

基金项目: 国家自然科学基金创新研究群体项目(51221003)和中国石油科技创新基金"页岩气储层伤害机理研究"(2011D-5006-0207)资助。

详细信息

作者简介:
郑力会,研究员,博士生导师,楚天学者特聘教授,主要从事油气封堵理论研究及技术开发。地址:北京市昌平区府学路18号石油工程学院;邮政编码102249;电话(010)89731026;E-mail:zhenglihui@cup.edu.cn。

中图分类号: TE357.1
计量
- 文章访问数: 855
- HTML全文浏览量: 165
- PDF下载量: 253
- 被引次数: 0
出版历程
- 收稿日期: 2014-12-29
- 刊出日期: 2015-05-31

Study on Repeating Fracturing while Causing No Damage to Original Fractures

ZHENG Lihui^1,2,
WENG Dingwei¹

College of Petroleum Engineering, China University of Petroleum. No. 18 Fuxue Lu, Changping District, Beijing 102249, China

摘要

摘要: 原缝无损压裂技术是指利用某种封堵材料,暂堵原裂缝,迫使压力向未压裂的地层发展,压裂完成后形成新裂缝且原裂缝的产液能力不受影响。绒囊工作液因其良好的暂堵性能而用于原缝无损压裂技术。室内评价表明,绒囊暂堵液能够增加人造岩心裂缝的流动阻力至25 MPa,封堵渗透率为17.5×10-3、163.9×10-3 μm2 的人造岩心后,地层原油渗透率0.7 h 恢复90.9% 和0.6 h 恢复84.7%。LH1 井现场先用绒囊暂堵液封堵地层,停泵压力稳定在22.0 MPa且10 min 不降。重复压裂后60 d 平均油井日产液量和日产油量比未压裂前30 d 分别上升48.7% 和119.2%,平均含水率下降了7.5%。表明绒囊暂堵液封堵性好,且对地层无伤害,可在提高单井产液量的同时降低含水率。
- 绒囊暂堵液 /
- 重复压裂 /
- 含水率 /
- 原缝无损技术
Abstract: When a lost circulation material is used to temporarily plugging the a fracture, new fractures will be forced to propagate in non-fractured zones. This is the so-called "non-damaging to original fractures while fracturing" technology. In the application of this technology, the liquid conductance of the original fractures is not affected while new fractures are being generated. In laboratory studies, a temporarily plugging fluid containing chorionic vesicles increased the flow resistance of artificial core fractures to 25 MPa. When treated with this temporarily plugging fluid, artificial cores (permeabilities 17.5×10-3 μm2 and 164.9×10-3 μm2, respectively) had permeability recovery (to crude oil) of 90.9% in 0.7 hour and 84.7% in 0.6 hour, respectively. When using chorionic vesicle in the operation of the Well LH1, pump pressure was held up at 22.0 MPa for 10 minutes. The daily production rates of liquid and oil 60 days after re-fracturing were increased by 48.0% and 119.2%, respectively, compared with those 30 days before re-fracturing, and the average water cut was reduced by 7.5%. These facts showed the good performance of chorionic vesicle in temporarily plugging fluid in fracturing operation.
- Chorionic vesicle /
- Temporarily plugging /
- Fracturing /
- Water cut

HTML全文

参考文献(9)

Elbel J L, Mack M G. Refracturing: Observations and theories [R]. SPE 25464, 1993:512-531.

Wright C A, Conant R A, Stewart D W, et al. Reorientation of propped refracture treatments[R]. SPE 28078, 1994: 94-101.

胡永全,赵金洲,蒲万芬,等. 堵老裂缝压新裂缝重复压裂技术 [J]. 西南石油学院学报,2000,22(3):61-65. Hu Yongquan, ZhaoJinzhou, Pu Wanfen, et al. Hydraulic re-fracturing technique for forning new fractures while blocking oldfracturs[J]Journal of South West Petroleum Institute,2000,22(3):61-64.

严锦根,汤志强,王兆水. 新型水溶性暂堵剂 YJDII 的研制与应用[J]. 油田化学,2000,17(1):24-27. Yan Jingen, Tang Zhiqiang, Wang Zhaoshui. Water soluble temporarily plugging agent JYD-Ⅱ:preparation and uses[J].Oilfield & Chemistry,2000,17(1):24-27.

杨宝泉. ZD-1 暂堵剂的研究及应用 [J]. 大庆石油地质与开发,2003,22(2):51-52. Yang Baoquan. Study and application of ZD-1 temporary plugging agent[J].Petroleum Geology & Oilfield Development in Daqing,2003,22(2):51-52.

俞然刚,任文明. 转向剂形成水力压裂人工隔层的机理分析[J]. 钻井液与完井液,2007,24(6):66-68. Yu Rangang, Ren Wenming. Mechanism analysis of hydraulic fracturing artificial barrier formed with diverting agents[J]. Drilling Fluid & Completion Fluid, 2007,24(6): 66-68.

郑力会,张明伟. 封堵技术基础理论回顾与展望 [J]. 石油钻采工艺,2012,34(5):1-9. Zheng Lihui, Zhang Mingwei.Review of basic theory for control lost circulation[J].Oil Drilling & Production Technology,2012,34(5):1-9.

Zheng H L, Kong L, Cao Y, et al. A new fuzzy ball working fluid for plugging lost circulation paths in depleted reservoirs[J]. Petroleum Science and Technology, 2012,30 (24):2517-2530.

郑力会, 曹园, 韩子轩, 等. 含绒囊结构的新型低密度钻井液[J]. 石油学报, 2010, 31(3):490-493. Zheng Lihui, Cao Yuan, Han Zixuan,et al.Novel lowdensity drilling fluid containing fuzzy ball structure[J]. Acta Petrolei Sinica,2010, 31(3):490-493.

施引文献

资源附件(0)

访问统计