基于室内水力压裂试验的水平井起裂模式研究

doi:10.13722/j.cnki.jrme.2014.1188

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Abstract

In order to investigate the initiation modes of hydro-fractures in horizontal wells，Laboratory hydraulic fracturing test was carried out using outcrop shelly limestone to simulate horizontal well hydraulic fracturing. The phenomena of fracture initiation and propagation around the horizontal wellbore were described and analysed by adding tracer to the fracturing fluid，analysing pumping curve，arranging AE monitoring system and splitting sample after test. Conclusions are as follows：(1) The initiation modes of hydro-fractures could be divided into three types：one transverse fracture(mode I)，transverse multi-fractures(Mode II)，transverse-longitudinal crossed fractures(Mode III). (2) Each hydro-fracture initiation mode has its certain pumping curves. Mode I had a low breakdown pressure followed by a sharp drop. Mode II had a relatively high breakdown pressure，then the pressure went up and fluctuated dramatically. Mode III also had a high breakdown pressure，but the pressure fluctuated slightly. (3) Among the specimens，the three initiation modes occurred randomly and the breakdown pressures were dispersed. (4) The AE activity could reflect the initiation and propagation of hydro-fractures and reached its peak value at the fracture initiation moment. (5) The area in which AE events concentrated was in agreement with the actual location of the hydro-fractures. AE locating results could be used to preliminary judge the distribution of hydro-fractures. (6) One transverse hydro-fracture was more likely to be formed at relatively high pumping rate，while the fracture geometry tended to be complex at relatively low pumping rate. Pumping rate is a key factor to determine the initiation mode. (7) It may be feasible to conjecture the initiation and propagation of the hydro-fractures using site fracturing pumping curves.

Key words： rock mechanics hydraulic fracturing horizontal well fracture initiation pumping curve acoustic emission

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	Articles by authors
	WANG Lei1
	YANG Chunhe1
	2
	GUO Yintong1
	HENG Shuai1
	WEI Yuanlong2
	HOU Zhenkun2
	LI Dan3

Cite this article:

WANG Lei1,YANG Chunhe1,2, et al. investigation ON fracture initiation modes OF HORIZONTAL WELLS based on laboratory hydraulic fracturing test[J]. , 2015, 34(S2): 3624-3632.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.1188 OR https://rockmech.whrsm.ac.cn/EN/Y2015/V34/IS2/3624

[1]	RABAAW E. Experimental study of hydraulic fracture geometry initiated from horizontal wells[R]. SPE 17920，1989.
[2]	ABASSH H，SAEEDH，MEADOWSD L. Nonplanar fracture propagation from a horizontal wellbore：experimental study[J]. SPE Production andFacilities，1996，11(3)：133-137.
[3]	刘建忠，刘翔鹗，孙聚晨. 水平井水力压裂真三维物理模拟试验[J]. 石油勘探与开发，1993，20(6)：69-76.(LIUJianzhong，LIUXiange，SUNJuchen. A true three-dimensional physical modeling of hydraulic fracturing in horizontal well[J]. Petroleum Exploration and Development，1993，20(6)：69-76.(in Chinese))
[4]	陈勉，庞飞，金衍. 大尺寸真三轴水力压裂模拟与分析[J]. 岩石力学与工程，2000，19(增)：868-872.(CHENMian，PANGFei，JINYan. Experimental and analysis on hydraulic fracturing by a large-size triaxial simulator[J]. Chinese Journal of Rock Mechanics and Engineering，2000，19(Supp.)：868-872.(in Chinese))
[5]	史明义，金衍，陈勉，等. 水平井水力裂缝延伸物理模拟试验研究[J]. 石油天然气学报，2008，30(3)：130-133.(SHIMingyi，JINYan，CHENMian，et al. Physical simulation test on hydraulic fracture expansion in horizontal wells[J]. Journal of Oil and Gas Technology，2008，30(3)：130-133.(in Chinese))
[6]	赵兴东，李元辉，袁瑞甫，等. 基于声发射定位的岩石裂纹动态演化过程研究[J]. 岩石力学与工程学报，2007，26(5)：944-950.(ZHAO Xingdong，LI Yuanhui，YUAN Ruifu，et al. Studyoncrackdynamicpropagationprocessofrock samples basedonacoustic emission location[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(5)：944-950.(in Chinese))
[7]	赵兴东，李元辉，刘建坡，等. 基于声发射及其定位技术的岩石破裂过程研究[J]. 岩石力学与工程学报，2008，27(5)：990-995.(ZHAO Xingdong，LI Yuanhui，LIU Jianpo，et al. Studyonrockfailureprocessbasedonacousticemissionanditslocationtechnique[J].Chinese Journal of Rock Mechanics and Engineering，2008，27(5)：990-955.(in Chinese))
[8]	许江，李树春，唐晓军，等. 单轴压缩下岩石声发射定位实验的影响因素分析[J]. 岩石力学与工程学报，2008，27(4)：765-772.(XU Jiang，LI Shuchun，TANG Xiaojun，et al. Influential factors of acoustic emission location experiment of rock under unaxial compression[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(4)：765-772.(in Chinese))
[9]	刘建坡，王洪勇，杨宇江，等. 不同岩石声发射定位算法及其实验研究[J]. 东北大学学报：自然科学版，2009，30(8)：1193-1196.(LIU Jianpo，WANG Hongyong，YANG Yujiang，et al.Experimental Study on Different Rock Locating Algorithmswith Acoustic Emission[J].Journal of Northeastern University：Natural Science，2009，30(8)：1 193-1196.(in Chinese))
[10]	刘培洵，刘力强，黄元敏，等. 声发射定位的稳健算法[J]. 岩石力学与工程学报，2009，28(增1)：2 760-2 764.(LIU Peixun，LIU Liqiang，HUANG Yuanmin，et al. Robustarithmeticforacousticemissionlocation[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(Supp.1)：2760-2764.(in Chinese))
[11]	郭印同，杨春和，贾长贵，等. 页岩水力压裂物理模拟与裂缝表征方法研究[J]. 岩石力学与工程学报，2014，33(1)：52-59.(GUOYintong，YANGChunhe，JIA Changgui，et al. Research on hydraulic fracturing physical simulation of shale and fracture characterization methods[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(1)：52-59.(in Chinese))
[12]	衡帅，杨春和，曾义金，等. 页岩水力压裂裂缝形态的试验研究[J]. 岩土工程学报，2014，36(7)：1 243-1 251.(HENGShuai，YANGChunhe，ZENGYijin，et al. Experimental study on the hydraulic fracture geometry of shale[J]. Chinese Journal of Geotechnical Engineering，2014，36(7)：1 243-1 251.(in Chinese))
[13]	NOTLEK G，SMITHM B. Interpretation of fracturing pressures[J]. Journal of Petroleum Technology，1981，33(9)：1767-1775.
[14]	YEWC H. Mechanics of hydraulic fracturing[M]. Houston：Gulf Publishing Company，1997：1-90.
[15]	黄荣樽. 水力压裂裂缝的起裂和扩展[J]. 石油勘探与开发，1981，(5)：62-74.(HUANGRongzun. Initiation and propagation of hydraulic fracturing[J]. Petroleum Exploration and Development，1981，(5)：62-74.(in Chinese))
[16]	HAIMSONB，FAIRHURSTC. Hydraulic fracturing in porous-permeable materials[J]. Journal of Petroleum Technology，1969，21(7)：877-817.
[17]	BRUMLEY J L，ABASS H H. Hydraulic fracturing of deviated wells：Interpretation of breakdown and initial fracture opening pressure[R]. SPE 37363，1996.