OBTURATION FACTORS ASSEMBLING NATURAL GAS:TAKING NORTH REGION OFJIZHONG SAG AS THE EXAMPLE
Received date: 2004-08-30
Revised date: 2004-10-09
Online published: 2004-12-20
Due to pervasion diffusibility of gas, obturation factors of gas is very importance in rift-basin with tension tectonic suffering more tectonization. A lot of difference types gas pools have been explored in north region of Jizhong sag, China northern, besides having excellent source rocks of generating gas hydrocarbon, and yet relation of obturation factors of gas. The paper generally discussed obturation factors (cover) assembling gas, expatiated main research results.The capillary pressure obturation standard of gas pool be founded in the region, withⅠ-Ⅱ types cover being good and better, Ⅲ-Ⅳ types cover being middling，for them being capable of obturating gas pools. The displacement pressure values from coal covers, Bengxi-Sanxi group of Carboniferous-Permian, can be more then 5 MPa, belong to Ⅱ-Ⅲ types of being better cover. The displacement pressure values of mud-rock covers, Ek-Es3 of Lower Terrtiary, commonly can be more then 0.5 MPa, the most value is the 2.83 MPa, with containing nor-coMPaction zone, being primary source rocks stratum. Therefore, superpressure-obturation-action and hydrocarbon-obturation-action are more important, covers of Ek-Es3 are to belong better covers. Factors of rocks and diagenesis: The obturation capability of cover is depressed along with increase of arenaceous rocks; thick single mud rocks can debase pervasion action of gas. The rocks of middling extent of diagenesis has the most excellent capability of obturation, in other word, with being early diagenesis B phase-late diagenesis A phase. Factors of stratum and tectonic: lower amplitude traps are better obturation action of gas then higher amplitude. Obturation acton of fault be engendered by character and scale of fault as well as stratum contact between ascend and lift stratum, but some small size late fault is destruct action to obturation after produced gas pools.
Key words： Obturation factor; Natural gas; The north region of Jizhong sag.
FANG Jie . OBTURATION FACTORS ASSEMBLING NATURAL GAS:TAKING NORTH REGION OFJIZHONG SAG AS THE EXAMPLE[J]. Natural Gas Geoscience, 2004 , 15(6) : 572 -579 . DOI: 10.11764/j.issn.1672-1926.2004.06.572
[1]秦建中，王东良，王静，等.冀中拗陷生气层研究和评价[A].天然气地质研究[C].北京：石油工业出版社，1992:45-76.
[2]秦建中，黄希陶，刘宝泉，等.冀中拗陷深层烃类相态预测[J].天然气地球科学，1993，(3)：19-21
[3]秦建中，王静，王东良，等.冀中拗陷未成熟油研究与勘探前景[J].沉积学报，1997，15(2)：105-108
[4]王东良，马顺平，降栓奇，等.冀中北部天然气资源评价[A].华北石油勘探开发科技文选[C].北京：石油工业出版社，2000:87-95
[5]王东良，王静，马顺平，等.冀中拗陷天然气成因类型与资源评价[A].华北石油勘探开发科技文选[C].北京：石油工业出版社，2001:197-204.
[6]降栓奇，杨桂茹，淡伟宁，等.廊固凹陷浅层天然气成因类型及机制 [J].天然气工业，2001，(3):67-70.
[7]张文朝，崔周旗，韩春元，等.冀中拗陷老第三纪湖盆演化与油气 [J].古地理学报，2001，(1):65-68.
[8]杜金虎，周伟宏，费宝生，等.冀中拗陷古潜山复式油气聚集区[M].北京：科学出版社，387-475.
[9]秦建中，粱狄刚，郭爱明，等.冀中石碳—二叠系煤成气与煤成油的有机地化特征[A].煤成气地质研究[C].北京：石油工业出版社，1987:131-144.
[10]秦建中，贾蓉芬，郭爱明，等.华北地区煤系烃源层油气生成、运移、评价[M].北京：科学出版社，98-134.
[11]卢学军，刘和平，蔡雪梅，等.晋冀地区石炭—二叠系天然气富集规律研究[A].华北石油勘探开发科技文选[C]北京：石油工业出版社，1997:197-204.
[12]卢学军，降栓奇，杨桂茹，等.冀中北部探区天然气富集规律及区带评价[A].华北石油勘探开发科技文选[C].北京：石油工业出版社，2003:156-168.
[13]张万选，张厚福.石油地质学[M].北京：石油工业出版社，1981.96-97.
[14]傅家谟，刘德汉，贾蓉芬，等.天然气运移、储集及封盖条件[M]. 北京：科学出版社，1992:45-50.
[15]戴金星，戚厚发，郝石生，等.天然气地质学概论[M].北京：石油工业出版社，154-160.
[16]李明诚.石油与天然气运移[M].北京：石油工业出版社，1987.87-90.
[17]徐永昌，傅家谟，郑建京，等.天然气成因及大中型气田的地学基础[M].北京：科学出版社，2000:41-69.
[18]宋岩，王震亮，王毅，等.准葛尔盆地天然气成藏条件[M].北京：科学出版社，2000:98-108.
[19]Hunt J M. Generation and migration of petroleum from abnormally pressured fluid coMPartments[J].AAPG,Bull, 1990，74(1)：1112-1114.
[20]Krooks B M. The quantification of diffusive hydrocarbon losses through caprocks of natural gas reservoir——A reevaluation[J]. AAPG Bull,1992,71(3)：989-990.
[21]郝石生，天然气运移与封闭条件研究[M].北京：石油大学出版社，1989:45-46.
[22]黄志龙，郝石生.廊固凹陷泥质岩异常压力与封闭性能研究[J].石油大学学报(自然科学版)，1992，16(2):47-49.
[23]张义刚.天然气的生成集聚和保存[M].南京：河海大学出版社，1991:121-124.
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