4 :CT 229 ( β,a,b) ;F FDK (x,y,z), ;g n [19] (a) ;R ;γ ; β, ( 1) ;a b 2, [20],,, 2.1, CT, [21-27] 1 Table1 Advantagesanddisadvantagesoftheresear

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1 GeologicalScienceandTechnologyInformation Vol.36 No.4 Jul doi: /j.cnki.dzkq ,,.ct [J].,2017,36(4): CT 1, 1 2, 1 1, (1. ( ), ;2., ) :CT, CT CT, CT, : ; ; ; CT :CT; :P631.6 :A : (2017) , :I ;I 0 ; μ i i, ;x i i, X,,,, ;,,CT CT, 1985 X X 2, [18] [1-2] 1967 CT,CT FDK FDK :, p ( β,a,b)=,ct R 槡 RR +aa+ b p ( β, a, ) ( bg n (a ) (2) 2π, R F FDK (x,y,z)= [3-16], CT 2 U(x,y, 0 β ) p ( 2 β, a, b) dβ (3) : 1 CT CT X k =arctan q R =arctan b (5) 槡 RR +aa, U(x,y, (1) [17] : β )= R+xcosβ+ysinβ (6) :U(x,y, I=I 0e - μ i x β ) ;q i i (1) ;p( β,a,b) ;p : : : 973 ( ) (2041CB239005); (P15084); (2017ZX05001;2016ZX05006) :(1958 a = Rtanγ,b= q cosγ ),,,, mzha@upc.edu.cn : (1977 ),,, @qq.com (4)

4 :CT 229 ( β,a,b) ;F FDK (x,y,z), ;g n [19] (a) ;R ;γ ; β, ( 1) ;a b 2, [20],,, 2.1, 2.1.1 CT, [21-27] 1 Table1 Advantagesanddisadvantagesoftheresearchmethodofporestructure ( ;, ; ), (3.

2 4 :CT 229 ( β,a,b) ;F FDK (x,y,z), ;g n [19] (a) ;R ;γ ; β, ( 1) ;a b 2, [20],,, 2.1, CT, [21-27] 1 Table1 Advantagesanddisadvantagesoftheresearchmethodofporestructure ( ;, ; ), (3.6~ nm),,, ; (FIB), ( ),,, [28-33] CT,,,, CT,,CT,,, 1 Xradia510 Versa CT CT, 1-a,b, 1-b 10~100μm,, 2-a, a. X1CT ;b. X2CT ;c. X3CT CT ;d. X4CT [34-39] 1 CT, -, Fig.1 CTimagesfordiferentcores, CT 2-a, 2-b,, 2.1.2,CT,CT [38], CT

230 2017 a. (,, ) [4] ;b. (,, ) [50] 2 CT Fig.2 CTscans CT ;CTN dry CT ;CTN w CT,,, CT [40] 2.2 2.2.1 [41-44] [45-49] ( 2),CT [49-53] -, ( ), CT [50] 2-b, CT (, [4] CT 5.4~ ), ; 25.

3 a. (,, ) [4] ;b. (,, ) [50] 2 CT Fig.2 CTscans CT ;CTN dry CT ;CTN w CT,,, CT [40] [41-44] [45-49] ( 2),CT [49-53] -, ( ), CT [50] 2-b, CT (, [4] CT 5.4~ ), ; 25.0μm ( 2-a), CT,, 10.09%,,, CT μm 3, CT [16] 10.37% :, CTNwB -CTNdry φ = 100% (7), CT CTN w -CTN dry, : φ (%);CTN wb 2 Table2 Advantagesanddisadvantagesoftheresearchmethodsofmicrocosmic remainingoildistribution ( ),, [54], CT, -,,, 2.2.2, [55] CT, 2 X 1 X 2, CT ( 3), CT,, [55] ;,, [56] [58] ;, CT, CT,,, CT [57] CT,

4 4 :CT 231 3, CT [55] X 1 (a) X 2 (b), Fig.3 Distributionofwaterphaseineachtimeofcoreflood- ingexperimentforcorex 1 (a),x 2 (b) [10], 2.3.1, [60], CT, 3, 2.2.3, CT, [59] CT CT [50] 14.8%,30%,,, CT 2-b, 81.6% 41.4% CT ( 4) [16] : S o = CTNdry -CTNt CTN w -CTN o CTNw -CTNai CTN wb -CTN dry 100% (8) CTNdry -CTNt S w = (1- CTN w -CTN o CTNw -CTNai ) 100% (9) CTN wb -CTN dry :CTN ai CT ;S o (%); CTN t t CT ;CTN o CT ;S w (%) CT,,, ( ) ( ) 4 X 5CT Fig.4 CTscansforcoreX 5,,, CT,, CT

232 2017, 1-c,d,, [61-63] [61] CT 2.4.2 CT,,, [62] CT 1-a, [63] 20~600 ;, CT ( 5),,CT, CT [64], CT 500,,CT, 2.4.3, CT,,,,,CT a. 65%;b. 75%;c. 85%; d.

5 , 1-c,d,, [61-63] [61] CT CT,,, [62] CT 1-a, [63] 20~600 ;, CT ( 5),,CT, CT [64], CT 500,,CT, 2.4.3, CT,,,,,CT a. 65%;b. 75%;c. 85%; d. 100% [66] CT, ; Raynaud [67-68] CT CO 2,, CO 2,, CT [63] 5 CO 2 Fig.5 Evolutionofmudstoneunderdiferentloads CO 2, CO 2 [69-72] Song [73] CT CT 2.4.5, ( ),, CT Jussiani [74] CT 1.1% [59] CT [65] X,, X

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Table1 Statisticsofporetypesofchang7tightsandstone injiyuanarea /% /% % 0.77% % ( 7 2) Fig.1 36 1 2017 1 GeologicalScienceandTechnologyInformation Vol.36 No.1 Jan. 2017 doi:10.19509/j.cnki.dzkq.2017.0122. : 7 [J]. 201736(1):183-187. : 7 1a 1b2 3 2 2 (1. a. ;b. 710069;2. 716000; 3. 710021) : 7