1、 l :2006-11-27Te:k (1980-), o(qB), ) ,p V 3,V Y。cI|:1673-5005(2007)02-0013-06二连盆地异常低压成因机理探讨许晓明 1, 刘 震1, 肖 伟1, 郝 琦1, 赵贤正2, 杨德相3(1.中国石油大学石油天然气成藏机理教育部重点实验室,北京 102249;2.中国石油天然气股份有限公司勘探与生产分公司,北京 100011;3.华北油田分公司勘探开发研究院,河北任丘 062552)K1:= 1J Cs+, “ vl1.0,Csy d= s 4,N| us N wLs (zZ FZ ) N wL 1。TV ,= W r5060M
2、aT , H T V ? = s1y。THq/;C 4 LC,9E 3s, / L, P Q H, LT sE, VF F O , 8MMl,s。1oM:= ;s;y ;Tms |:TE 121. 31 DS M :AInvestigation on geneticmechanism of subnormal pressure in Erlian BasinXU Xiao-ming1, LIU Zhen1, XIAOWei1, HAO Qi1, ZHAO Xian-zheng2, YANG De-xiang3(1.Key Laboratory forHydrocarbon Accumulati
3、on, Ministry ofEducation, China University ofPetroleum, Beijing 102249, China;2. Exploration and Production Branch Company, PetroChina, Beijing 100011, China;3. Research Institute ofPetroleum Exploration andDevelopment, HuabeiOilfieldBranch Company,Renqiu 062552, HebeiProvince, China)Abstract:Thepre
4、ssure field of the sags inErlianBasin showscharactersofbasically subnormalpressure, and thepressurecoefficientsaremostless than1. And itisdifficulty tointerpretthegeneticmechanismsofsubnormalpressureofErlianBasinwith conventionalgeneticmechanisms. Comparedwith theburialhistoryof thebasinsofYinggehai
5、BasinandBohaiBayBa-sinwhich dominatedwithoverpressure, itis found thatErlianBasinunderwentalongdepositionalstagnancystagethatalmostextends5060Ma in laterCretaceous, and thismaybe thekey factor that leads to presently subnormalpressureenviron-men.t Underdepositionalstagnancy stage, neitherundercompac
6、tion noroverpressure can begenerated, but the subsurfacestratus experiencecontinuouscompactionwhichpreventsthe subsequentcompactioncaused by theoverloadingprocess in thefollowing sedimentaryperiods. In thefollowing sedimentaryprocess, because theoverburdenmainly exertson thematrix ofthe rock and the
7、pressureof the innercontained fluid isconcealed out, thesubnormalpressure is formed.K ey words:ErlianBasin;subnormalpressure;geneticmechanism;depositional stagnancyss /n 8 C。 ,sC Ri,#7sy 9 。M ,sy T1 Bt, TB1, 、?ZB e = 8 “ T,yN, bsy, M? p Es1il。 - sy VB54:(1)/ 6 Ky 1-2 ;(2)/y,f T/? 3 ,V7 7 s 3 ;(3) Q
8、T 4-5 ;(4) dbT 6 ;(5) s 7 。 , - s+y d= s H 4,yN,2007年 第 31卷 中国石油大学学报(自然科学版) Vo.l 31 No. 2第 2期 JournalofChinaUniversityofPetroleum Apr. 200734Bsy , km d= s1y。1 = s+= S = 1 u,v 4, + B, 2| , H,1000km, 2 z20220km,9 10104 km2, S dv B 8 。= :_ L1“, 5J u “ ,/ “ M 8 。98 A,= JCs+,7?s。1.1 :_s+= :_ 8VC 8“8“,i 8
9、“(m1)。 2JCs K 0,770mP;7 J51350m 7 SCs。m1 = 1“1.2 s+ ,= J “ (l1. 0, J “ K0.99, , JK “ 1.12, 。J u1sJ ,V_/ v。 JV_/2/,# 2 | /, “ v0.990.92。 V_/ “ K y,7_/_ | / “ MM (m2)。 J-B s9 “? p, “ u u,_ 2 ! /%/ “ v1.020.90, LZ_Z。! /ZB。 2J: F “VJ_ 20/、W/v。m2 J: F “ m2 = sy ,/ 6 K/s,i O/ 6 E , (6)8 T(5) T(6) VpfB k,
10、j.J“d+#y J. F? , 2002, 23(1):66-69.LIU Xiao-feng, XIE Xi-nong. Dynamics, origin andcharacteristics of underpressure systems in Dongyin de-pression J. Oil GasGeology, 2002, 23(1):66-69. 5 j,Z. EJs8“# y J. o S, 2003, 28(1):61-66.XIE Xi-nong, JIAO Jiu-jiu, XIONG Hai-he. Underpres-suresystem and forming
11、mechanism in theShiwuDepres-17 第 31卷 第2期 许晓明,等:二连盆地异常低压成因机理探讨sion ofSongliaoBasin J. Earth Science, 2003, 28(1):61-66. 6 Lc, ,. 8 8y J. F, 1999, 20(6):27-31.LOU Zhang-hua, GAO Rui-qi, CAIXi-yuan, et a.l Theevolution offluid dynamic field and the origin of subnor-malpressure inSongliaoBasin J. ActaPe
12、troleiSinica,1999, 20(6):27-31. 7 z , ,u,.6Jss+#ys J. -, 2003, 10(3):158.DAILi-chang, LIU Zhen, ZHAO Yang, eta.l The char-acteristicand formation ofoverpressure andunderpressurein JiyangSag J. Earth ScienceFrontiers, 2003, 10(3):158. 8 o, ,.= “d+ J. F, 2004, 25(6):610-613.XIAOWei, LIU Zhen, DU Jin-h
13、u, eta.l Characteristicof geothermal-geopressure system in Erlian Basin J.XinjiangPetroleum Geology, 2004, 25(6):610-613. 9 .r ! 3s:s、y# M eT J. S,2005, 40(3):376-389.GUO Ze-qing, LIUWei-hong. Overpressure in theCe-nozoicofwesternQaidam Basin:distribution, generationand effecton oilgasmigration J. C
14、hineseJournalGe-ology, 2005, 40(3):376-389. 13 u ,.= %M.: F 7? !9. . M.: F 7? !9. . 7?M.: F LlM.: Fv, 1992:279-281. 6 c. . B 7?M.: F 7?, 2000, 29(3):5-10.ZHOUXing-x.i A primarydiscussion on thenetwork-likeoilandgaspoolsincarbonate rocks taking theLunnanburied-hillpoolinTarim Basin as an example J. P
15、etro-leum Exploration andDevelopment, 2000, 29(3):5-10. 8 . 2 . J.F 7?, 2002, 29(4):4-7.ZHOU Xing-x.i My seconddiscussion on network-likeoiland gaspoolsand theexplorationstrategy forLunnanbur-ied-hillpools J. Petroleum Exploration and Develop-ment, 2002, 29(4):4-7. 9 C,f , B,.“ . y、 6J M.: F, 2003:20-24. 10 f F. B?C# il J. F? , 1999, 20(2):120-124.ZHANG Kang. The discovery of TaheOilfield and itsgeologicimplication J. Oil GasGeology, 1999, 20(2):120-124.(编辑 刘艳荣)18 中国石油大学学报(自然科学版) 2007年 4月
