第39参第5期 2017年9月
石油钻采工艺
OIL DRILLING & PRODUCTION TECHNOLOGY
文章编号：10007393(2017)05064606
DOI:10.13639/j.odpt.2017.05.020
人工隔层技术在控缝高压裂井中的应用
谷文彬裴玉彬”赵安军！王涛’”蔡军！吴凯凯” 1.中国石油华北油田公司勘探事业部；2.山东科石沟工程技术研究院
Vol. 39 No. 5 Sep.2017
弓用格式：谷文彬，装玉彬，赵安军，王涛，票军，吴凯凯，人工隔层技术在控缝高压井中的应用」，石油钻采工艺 2017,39(5):646-651
摘要：压裂施工中，如果隔层的追档能力较差，裂缝就会穿过隔层，含水层高产层较近的情况下还会引起含水急剧上升，影响压裂效果，基至造成压裂失败。为了提高压裂作业的成功率，对缝高控制技术进行深入研究，实验分析了人工隔层上转向制和下转向剂的上率浮、沉降率、上浮相对建率、沉况降相对建率及隔层应力提高率，优选出了上转向剂KR2(上浮率为97%，上浮相对速率1.78，突破压力提高7.23MPa)和下转向剂KR4(沉降率为98%，沉降相对速率1.83，突破压力提高6.29MPa)。现场试验中，上转向剂的加入很好控制了裂缝在高度上的延伸，控缝高效果显著，人工裂缝高度降低2.7m且未压穿水层，为以后控缝高压裂并的施工提供了很好的参考。
关键词：水力压裂；人工隔层；上转向剂；突破压力；控缝高
中图分类号：TE357.1
文献标识码：A
Application of artificial barrier technology to fracture height control in fracturing wells
GU Wenbin', PEI Yubin', ZHAO Anjun', WANG Tao', CAI Jun', WU Kaikai
1. Exploration Departmenr, CNPC Huabei Oifeld Company, Rengiar 062550, Hebei, Chinar;
2. Shandong Kerui Petroleum Engineering and Technology Research Institute, Dongving 257029, Shandong, Chind
Citation: GU Wenbin, PEI Yubin, ZHAO Anjun, WANG Tao, CAI Jun, WU Kaikai. Application of artificial barrier technology to fracture height control in fracturing wells [ J J . Oil Drilling & Production Technology, 2017, 39(5): 646-651.
Abstraet: In the process of fracturing, fractures can run through barriers whose their barrier capacity is poorer. And if the aquifer is closer to the producing zone, water cut will rise sharply and fracturing effect will be impacted and even fail. To increase the success ratio of fracturing operation, the fracture height control technology was studied deeply in this paper. The floating diversion agent and settling diversion agent of artificial barrier were experimentally analyzed in terms of floating rate, settling rate, relative floating speed, relative settling speed and barrier stress improvement rate. And accordingly, floating diversion agent KR2 (floating rate 97%, relative floating speed 1.78 and breakthrough pressure increase 7.23 MPa) and settling diversion agent KR4 (settling rate 98%, relative settling speed 1.83 and breakthrough pressure increase 6.29 MPa) were adopted. In the field test, the adding of floating diversion agent implements the best control on fracture height extension, presenting remarkable fracture height control effect. It can be used as the reference for the construction of fracturing wells with fracture height control.
Key words: hydraulic fracturing; artificial barrier; floating diversion agent; breakthrough pressure; fracture height control
水力压裂是油气井增产改造的重要技术措施，广泛应用于低渗透、特低渗透油气藏的开发12]。水力压裂施工中，如何有效地控制裂缝在高度方向上
的增长是较为重要的，当压裂目的层比较薄，遮挡层的遮挡能力较差时，压裂裂缝可能会穿透隔层[3]。如果含水层离产层较近，还会引起含水的急剧上升，影
第一作者：谷文彬（1983-),1987年毕业于武汉地质学院石油地质专业，获工学学士学位，现从事石油天然气地质研究，高级工程师。通
试地址：(062552)河北省任市华北油田勘探部。E-mail；ktb_gwb@petrochina.com.cn
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