ACTA SED IMENTOLOGICA SIN ICA C CO 2

Size: px

Start display at page:

Download "ACTA SED IMENTOLOGICA SIN ICA C CO 2"

Randolph Greene
5 years ago
Views:

1 ACTA SED IMENTOLOGICA SIN ICA Vol. 26No Ap r : (2008) ( ),,, C C,,, ( ) : m l/g m l/g m l/g m 3 ; ; m E2mail: dqp i. edu. cn P593 A 0 R ice, 21. 4% [ 1 ], 1 /4, m 3, [ 18 ],;, m 3, m %, (21. 4% )1 /3,,,, [ 911 ] 3 : (1),,, 10 m 100 m m,, ( ) ; ( 2) [ 914 ], (() )?? ( 3)?? C 1,,?,,,,, (: ) ( ) :

2 2 : 309 1,( ) CH 4 CO 2 H 2 O,, C C C : 1 = X CH4 + X res + X CO2 (1) C ini = X CH4 C CH4 + X res C res + X CO2 (2) C ini = X CH4 C CH4 + X res C res + X CO2 C CO 2 (3), ini CH 4 res CO 2 CH 4 CO 2, X CH4 X res X CO 2 CH 4 CO 2 ( 1)1, ( )(X CH4 ) (X res )(X CO2 ) CH 4 CO 2 C,, CH 4 CO 2, C,: r CH4 = R CH 4 R CH4 + 1 = R st ( C CH ) R st ( C CH ) (11) r res = R res R res + 1 = R st ( C res ) R st ( C res ) () r CO2 = R CO 2 R CO2 + 1 = R st ( ) R st ( ) () : ( r CH4 - r res ) X CH4 = r ini - r res + ( r res - r CO2 ) X CO 2 (14) X CH4 = r ini - r res + ( r res - r CO2 ) X CO 2 r CH4 - r res (15) X res = r CH 4 - r ini + ( r CO 2 - r CH4 ) X CO 2 r CH4 - r res (16), X CO2 O 1 1H 2 OCO 2 [ 15, 16 ] ), CH 4 CO 2, CH 4 X CH4 (0, 1 ) (V, m l/g) : R ini R ini = R CH4 R CH4 + 1 X 1 + R res R res + 1 X res + R CO 2 R CO2 + 1 X CO2 (4) C ini : R ini = = R st ( C ini ) C ini 1000 C CH4 R CH4 = = R st ( C CH ) C CH C res R resini = = R st ( C res C res 1000) C CO 2 R CO 2 = = R st ( ) C CO R st = (5) (6) (7) (8) C ini C CH4 C res C CO2 : V = 22400X CH 4 2 (17), C ini C CH4 C res C CO2 1,, ( R CH4 R CH R res R res + 1 ) X CH 4 = R ini R ini R res R res ( R res R res R CO2 R CO ) X CO 2 (9) r ini = R ini R ini + 1 = R st ( C ini ) R st ( C ini ) (10) 1 Fig. 1Relationship between the C values of kerogen and the dep th in Songliao basin

3 310 26,, (2) C res, 0 (, 50 m, ) C < - 55 [ 17 ], C CH4 (3) CO 2,, (1), - 15 C CO2 /m 1 1 ( C, PD B) Table 1The C va lues of na tura l ga s of W ell Yan shen1 in Qa idam ba sin( C, PD B) C CO2 C CH4 /m C CO2 C CH CH 4 ( CO 2, ), ;,, m (, ), m l/g m l/g m l/g,, (2), m 3,,,,3 /4

4 2 : Fig. 4Relationship between the biogenic gas yield from organic matter calculated by carbon isotop ic equilibrium method and the dep th 2 ( 10 m 3 ) Table 2Ga s2genera ted quan tity of var ious ga s source rock in north of Songliao ba sin ca lcula ted by carbon isotop ic equ ilibr ium m ethod( 10 m 3 ) Q N 2 t N 1 d E 3 y E 3 m E 3 m E 3 s E 3 n E 3 n E 3 n E 3 n E 3 n E 3 y E 3 y E 3 qn E 3 qn ,,,, [ 18, 19 ] ), ( ),, ( f), ( 3), m 3,,,,, 3 ( 10 8 m 3 ) Table 3The resource quan tity collection of b iogen ic ga s in the north of Son liao ba sin ca lcula ted by carbon isotop ic equ ilibr ium m ethod Q N 2 t N 1 d E 3 y E 3 m E 3 m E 3 s E 3 n E 3 n E 3 n E 3 n E 3 n E 3 y E 3 y E 3 qn E 3 qn ,

5 3 26,,, m l/g m l/g m l/g m 3 ; ;, ;, m 3 1R ice D D, Claypool G E. ( References) Generation, accumulation, and resource po2 tential of biogenic gas[ J ]. AAPG Bulletin, 1981, 65 (1) : SchoellM. Genetic2characterization of natural gases[ J ]. AAPG Bulle2 tin, 1983, 67 () : W hiticarm J, Faber E, SchoellM. B iogenic methane formation in ma2 rine and fresh2water environments CO 2 reduction vs. fermentation iso2 tope evidence[ J ]. Geochim ica et Cosmochim ica Acta, 1986, 50 ( 5 ) : Shurr G E, R idgely J L. Unconventional shallow biogenic gas system s [ J ]. AAPG Bulletin, 2002, 86 (11) : ,,,. [M ]. :, 2003: [ Dai Jinxing, Chen Jianfa, Zhong N ingning, et al. Giant Gas Fields and Their Gas Sources[M ]. Beijing: Sciences Press, 2003: ] 6,,,. [ J ]., 2005, 32 ( 4 ) : [ Zhang Shuichang, Zhao W enzhi, L i Xianqi, et al. Advances in biogenic gas studies and p lay strategies[ J ]. Petroleum Exp loration and Development, 2005, 32 ( 4) : ] 7,,. [ J ]., 2006, 8 (3) : [ L in Chunm ing, L i Yanli, Q i B inwen. Research status and exp loration potential of biogenic gas[ J ]. Journal of Palaeogeography, 2006, 8 (3) : ] 8,,,. [ J ]., 2006, 26 ( 8 ) : 5 [ Shuai Yanhua, Zhang Shuichang, Su A i guo, et al. Preliminary analysis of exploration poten2 tial of biogenetic gas[ J ]. Natural Gas Industry, 2006, 26 (8) : 5 ] 9,,,. [ J ]., 1996, 17 (2) : [L i M ingzhai, Zhang Hongnian, L iu Hua, et al. Advances in simulated test of biogas[ J ]. O il & Gas Geolo2 gy, 1996, 17 (2) : ] 10,,,. [ J ]., 1997, 18 ( 3) : 336 [ Guan Deshi, Q i Houfa, Q ian Yibo, et al. Generation and evolution model of biogenic gas[ J ]. Acta Petrolei Sin2 ica, 1997, 18 (3) : 336 ] 11,. [ J ]., 2002, 20 ( 3 ) : [ Huang Baojia, Xiao Xian2 m ing. Characteristics and generation2evolution model of marine biogas in the Yinggehai Basin [ J ]. Acta Sedimentologica Sinica, 2002, 20 (3) : ],,. [ J ]., 1994, 16 ( 3 ) : [ Chen Ying, Dai Jinxing, Q i Houfa On some theoretical and methodological top ics of biogenic gas studies[ J ]. Experimental Petroleum Geology, 1994, 16 (3) : ],. [ J ]., 1997, 17 ( 2) : 6210 [L im ingzhai, Zhang Hongnian. Research on the formation of biogas Reservoir[ J ]. Natural Gas Industry, 1997, 17 (2) : 6210 ] 14. [ J ]., 2002, 22 (5) : 116 [ Shi Zhanzhen. Study on biogas in Bohaiwan Ba2 sin and its surrounding[ J ]. Natural Gas Industry, 2002, 22 ( 5) : 1 16 ] 15,,. [M ]. :, 1993 [ Pang Xiongqi, Chen Zhangming, Chen Fajing. D igital Modeling the Sedi2 mentary H istory and Thermal Evolution, Hydrocarbons Generation, Residence as well as Expulsion Procedure, and Quantitative Evalua2 tion of Source Rocks in O il and GasBearing Basins[M ]. Beijing: Ge2 ological Publishing House, 1993 ] 16,,,. [ J ]., 2008, 15 ( 1 ) [ Lu Shuangfang, L iu Shaojun, W ang Pengyan, et al. Elemental equilibrium method for e2 valuating quantity of biogas and its formation age and its app lication [ J ]. Earth Science Frontiers, 2008, 15 (1) ] 17,,. [ J ]., 2006, 26 (4) : 527 [W ang Xue, Feng Zihui, Song Lanbin. The character and formation reason of biological gas in north of Songli2 ao Basin[ J ]. Natural Gas Industry, 2006, 26 (4) : 527 ] 18,,,. [M ]. :, 2002: [ Lu Shuangfang, Fu Guang, W ang Pengyan, et al. Quantitative Research on Main Factors Control2 ling Gas Accumulation [ M ]. Beijing: Petroleum Industry Press, 2002: ] 19,,. [ J ]., 2000, 21 ( 4 ) : 62 [ Lu Shuangfang, Mengjun,W ang Zhenping. Zhao V iewing oil and gas exploration in Tarim from the periods of oil and gas formation [ J ]. Acta Petrolei Sinica, 2000, 21 (4) : 62 ]

6 2 : 3 The Carbon Isotopic Equilibrium M ethod of Evaluating the Biogas2generated Quantity and the Generation Period : its application LU Shuang2fangXU Q ing2xial IU Shao2junSHEN J ia2nian XUE Hai2taoWANG M inhu Hui2ting ( Daqing Petroleum Institute, Daqing, Heilongjiang, ) AbstractThe biogas generation period p lays a very important role in its accumulation. But now there is not a credit2 able and effective method to app raise it. A im ing at this difficult p roblem, and considering it s a carbon isotope bal2 ance p rocess, regardless of the formation mechanism s of biogenic gas. The C and C amount of initial organic matter before generation and that of residual organic matter and other p roductions after generation should keep conservation. Carbon isotop ic equilibrium method (model) is exp lored and established to assess biogenic gas in this paper, which is demarcated and app lied according to the abundant analyzed data in Songliao basin. Results show that the accum ula2 tively generated biogenic methane of, and types organic matters are m l/g, m l/g and m l/ g, respectively. The biogas2generated quantity of source rock in the research area is about m 3. The major period of biogenic gas generation occurs before the end of Nenjiang period. tween m 3 and m 3. The possible biogas resource is be2 Key wordsbiogas, gas2generated quantity, generation period, carbon isotop ic equilibrium method, resource quanti2 ty

Evaluation on source rocks and the oil-source correlation in Bayanhushu sag of Hailaer Basin

30 2 2011 6 GLOBAL GEOLOGY Vol. 30 No. 2 Jun. 2011 1004-5589 2011 02-0231 - 07 163712 3 7 Ⅰ Ⅱ1 3 - - P618. 130 A doi 10. 3969 /j. issn. 1004-5589. 2011. 02. 011 Evaluation on source rocks and the oil-source